Heating structure and oil-water separator using same

Abstract

The utility model discloses a heating structure which comprises a heating bag box body, a steam heating pipe, a steam valve, a safety air outlet pipe and an air outlet control valve, the heating bag box body is installed on a cooking box in a covering mode, the steam heating pipe and the safety air outlet pipe are connected with the heating bag box body, the steam valve is arranged on the steam heating pipe, and the safety air outlet pipe is connected with the steam valve. And the air outlet control valve is arranged on the safe air outlet pipe. The utility model further discloses an oil-water separator. Compared with the prior art, the kitchen waste oil extraction device can ensure that the oil extraction rate of kitchen waste is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste treatment, and particularly relates to a heating structure and an oil-water separator applying the structure. Background Technique

[0002] In kitchen waste, grease mainly exists in five forms: free oil, dispersed oil, emulsified oil, dissolved oil, and grease inside the solid phase. Among them, the free oil has a relatively large droplet diameter and can float upward quickly after standing, floating on the water surface in the form of a continuous-phase oil film; the dispersed oil is suspended and dispersed in the water phase in the form of tiny oil droplets with a droplet diameter greater than 1 μm; the emulsified oil has a particle size of 0.5 - 15 μm; the dissolved oil is dispersed in water in a molecular state, forming a homogeneous system with water, and is difficult to separate; the grease inside the solid phase is mostly combined with the garbage solid in a solid state and can hardly be directly separated. It can be seen that the content of free oil is the determining factor for the oil removal performance of kitchen waste.

[0003] Studies have shown that the content of free oil in the raw materials of kitchen waste in China is only 0.2%, while the content of grease inside the solid phase is as high as 5.8%. To improve the grease recovery rate, it is necessary to perform certain pretreatment on kitchen waste before oil extraction to leach and transfer the grease inside the solid phase to the liquid phase. At present, almost all the technical principles of oil extraction and oil removal on the market mostly adopt the method of wet hot hydrolysis for extraction. Under high temperature and high pressure conditions, the organisms in the broken slurry of kitchen waste are subjected to cell wall hydrolysis and liquefaction to change their physical and chemical properties, promoting the leaching and transfer of the grease in the solid phase to the liquid phase, which is convenient for subsequent grease recovery. The optimal conditions for liquefying and leaching kitchen grease are as follows: First, perform wet hot hydrolysis on the kitchen waste slurry at a temperature of 160 °C for 80 min to liquefy and leach the solid-phase grease to the liquid phase, and then perform centrifugal separation. When the centrifugal speed is controlled at 2500 r / min, the leaching amount of free oil per unit of garbage reaches the maximum value, and the grease extraction rate is 70% - 80%.

[0004] In recent years, with the soaring market price of crude bio-grease, the amount of grease has become the key to the profitability of kitchen (catering) waste projects. Therefore, increasing the grease extraction rate of kitchen (catering) waste projects has attracted more and more attention from various enterprises. And the key factor to ensure the oil extraction rate is the control of temperature.

[0005] During the oil extraction process of kitchen waste, the commonly used heating method is steam heating. High-temperature and high-pressure steam is generated by a steam generator, and the steam is introduced into a high-temperature cooking tank to heat the kitchen waste. During the heating process, there are the following technical problems:

[0006] 1. High-temperature cooking equipment is extremely prone to heat dissipation during operation, and the temperature duration is short.

[0007] 2. Heat loss is likely to occur during the transportation of steam, reducing the heating effect.

[0008] 3. The heating energy consumption is relatively large and the cost is relatively high.

[0009] In view of this, a heating structure and an oil-water separator applying this structure are specially provided. Utility Model Content

[0010] The purpose of the present utility model is to provide a heating structure and an oil-water separator applying this structure to solve the problems pointed out in the background technology.

[0011] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0012] A heating structure includes a heating package box body, a steam heating pipe, a steam valve, a safety air outlet pipe and an air outlet control valve. The heating package box body is covered and installed on a cooking box. The steam heating pipe and the safety air outlet pipe are connected to the heating package box body. The steam valve is arranged on the steam heating pipe, and the air outlet control valve is arranged on the safety air outlet pipe.

[0013] In a preferred embodiment, the air outlet control valve is set as a DN25 float valve.

[0014] In a preferred embodiment, the steam heating pipe is coated with a heat preservation layer.

[0015] In a preferred embodiment, the heat preservation layer includes a base layer and a fixing layer. The base layer is made of rock wool or glass wool material, and the fixing layer is made of stainless steel spirally wound on the base layer.

[0016] In a preferred embodiment, the steam heating pipe includes a main pipe and multiple branch pipes. The multiple branch pipes are connected to the main pipe. The steam valve is arranged on the main pipe. Multiple interfaces are provided on the heating package box body, and the multiple interfaces are arranged corresponding to the multiple branch pipes one by one. The interfaces are connected to the branch pipes through flanges.

[0017] In a preferred embodiment, the inner wall of the heating package box body is filled with heat preservation cotton.

[0018] In a preferred embodiment, the bottom of the heating package box body is adapted to the shape of the cooking box and fits on the wall surface of the cooking box.

[0019] In a preferred embodiment, a box body inspection opening is further provided on the heating package box body. An opening and closing door is provided on the box body inspection opening, and a hinge and a lock are provided between the opening and closing door and the box body inspection opening.

[0020] In a preferred embodiment, a water inlet and a water outlet are provided on the heating package box body.

[0021] An oil-water separator includes the above-mentioned heating structure.

[0022] Compared with the prior art, the heating pack box body of the present utility model is covered and installed on the cooking box, and the cooking box is a slurry cooking box. During the working process, the slurry after sand and slag removal of the kitchen waste is cached in the slag removal effluent tank and then pumped to the cooking box, and the temperature is raised to above 80°C by direct steam heating. The main functions of heating are twofold: First, after heating the organic slurry, it is beneficial to maximize the recovery of oil in the oil recovery process. Second, under the action of high temperature and mechanical stirring, the solid organic matter in the slurry can be maximally separated and enter the liquid phase, while also reducing the solid phase content.

[0023] During heating, the heated steam enters the steam heating pipe through the steam valve on the heating pack box body. The steam heating pipe transfers heat to the heating pack box body, causing the heating pack box body to heat up. The heated heating pack box body transfers heat to the cooking box. A safety exhaust pipe is provided at the top of the heating pack to ensure the stable air pressure inside the heating pack box and ensure safe operation.

[0024] Under the setting of the present utility model, the following technical effects can be achieved:

[0025] 1. The heating pack box body can ensure the improvement of the oil extraction rate of kitchen waste. It can be flexibly installed and the installation position can be customized according to the need of the oil extraction rate.

[0026] 2. The device is equipped with a steam float valve and a safety discharge port, which can automatically sense the steam pressure inside the heating pack box body. When the pressure exceeds the warning value, it can be automatically discharged externally, which is safe and reliable, has a high degree of automation, and does not require on-site personnel.

[0027] 3. The device uses heat insulation cotton to maintain the cooking temperature. The heat insulation cotton has the advantages of reliable heat preservation quality and good heat insulation effect;

[0028] 4. The hot water in the heating pack box body can provide a hot water source for other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an axonometric view of a heating structure related to the present utility model.

[0030] Figure 2 is a front view of a heating structure related to the present utility model.

[0031] Figure 3 is a structural schematic diagram of a steam connecting heat pipe of a heating structure related to the present utility model.

[0032] In the figure

[0033] Heating pack box body 1; First partition 2; Second partition 3; Third partition 4; Interface 5; Box body maintenance port 6; Opening and closing door 7; Hinge 8; Lock catch 9; Steam heating pipe 10; Main pipe 11; Branch pipe 12; Base layer 13; Fixed layer 14; Steam valve 15; Safety exhaust pipe 16. Detailed implementation mode

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0035] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0036] Embodiment 1:

[0037] As Figures 1 to 3 shown, a heating structure includes a heating pack box body 1, a steam heating pipe 10, a steam valve 15, a safety exhaust pipe 16, and an air outlet control valve. The heating pack box body 1 is covered and installed on a cooking box for heat transfer and heat preservation. The steam heating pipe 10 and the safety exhaust pipe 16 are connected to the heating pack box body 1. The steam valve 15 is arranged on the steam heating pipe 10 for controlling the inflow of steam. The air outlet control valve is arranged on the safety exhaust pipe 16.

[0038] The heating pack box body 1 of the heating structure in this embodiment is covered and installed on a cooking box. The cooking box is a slurry cooking box. During the working process, the slurry after sand and slag removal of kitchen waste is cached in the slag removal and water outlet tank and then pumped to the cooking box, and the temperature is raised to above 80°C by direct steam heating. The main functions of heating are twofold: First, after heating the organic slurry, it is beneficial to maximize the recovery of oil in the oil recovery process. Second, under the action of high temperature and mechanical stirring, the solid organic matter in the slurry can be maximally separated and enter the liquid phase, while also reducing the solid phase content.

[0039] During heating, the heated steam enters the steam heating pipe 10 through the steam valve 15 on the heating pack box body 1. The steam heating pipe 10 transfers heat to the heating pack box body 1 to raise the temperature of the heating pack box body 1. The heated heating pack box body 1 transfers heat to the cooking box. A safety exhaust pipe 16 is provided at the top of the heating pack to ensure the stable air pressure in the heating pack box body 1 and ensure safe operation.

[0040] Further, the air outlet control valve is set as a DN25 float valve for controlling the discharge of steam.

[0041] Furthermore, the steam heating pipe 10 is covered with a heat insulation layer to achieve heat insulation of the steam heating pipe 10 and avoid heat dissipation.

[0042] Furthermore, the heat insulation layer includes a base layer 13 and a fixing layer 14. The base layer 13 is used to achieve the main heat insulation effect, and the fixing layer 14 is used to achieve a good protective effect.

[0043] In this embodiment, the base layer 13 is made of rock wool or glass wool material, which can achieve good heat insulation. The fixing layer 14 is made of stainless steel spirally wound around the base layer 13 to achieve a good protective function, and the spiral winding setting is convenient for installation.

[0044] The materials of the base layer 13 and the fixing layer 14 are not limited to the above materials, as long as they can better achieve their functional goals.

[0045] To achieve uniform heat compensation, the steam heating pipe 10 includes a main pipe 11 and multiple branch pipes 12. The multiple branch pipes 12 are connected to the main pipe 11. The steam valve 15 is provided on the main pipe 11. The heating package box body 1 is provided with multiple interfaces 5. The multiple interfaces 5 are arranged corresponding to the multiple branch pipes 12 one by one. The interfaces 5 are connected to the branch pipes 12 through flanges. The multiple interfaces 5 are distributed on the heating package box body 1, and the multiple branch pipes 12 and the multiple interfaces 5 are connected corresponding to each other one by one to achieve uniform heat compensation, so that the heating package box body 1 can be quickly heated up and the temperatures in all regions inside the box are balanced.

[0046] In this embodiment, the number of the interfaces 5 is set to three.

[0047] Furthermore, the inner wall of the heating package box body 1 is filled with heat insulation cotton. The heat insulation cotton has a good heat insulation effect, which can prevent heat loss of the steaming box and continuously ensure that the temperature inside the steaming box is maintained at a relatively high level.

[0048] To achieve a good heating effect, the bottom of the heating package box body 1 is adapted to the shape of the steaming box and fits on the wall surface of the steaming box.

[0049] In this embodiment, the heating package box body 1 includes three partitions, namely a first partition 2, a second partition 3, and a third partition 4, to adapt to the shape and heating requirements of the steaming box.

[0050] To facilitate the maintenance of the heating package box body 1, a box body maintenance port 6 is also provided on the heating package box body 1. An opening and closing door 7 is provided on the box body maintenance port 6. A hinge 8 and a lock 9 are provided between the opening and closing door 7 and the box body maintenance port 6. The hinge 8 is used to achieve the rotational connection between the opening and closing door 7 and the box body maintenance port 6, and the lock 9 is used to achieve the locking and opening between the opening and closing door 7 and the box body maintenance port 6.

[0051] Furthermore, a water inlet and a water outlet are provided on the heating pack box body 1. The water inlet is used to inject water into the heating pack box body 1, and the water outlet is used to discharge the water in the heating pack box body 1. The discharged water is either directly discharged or used as a hot water source for other devices.

[0052] Embodiment 2:

[0053] An oil-water separator includes the heating structure described in Embodiment 1.

[0054] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the present utility model. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A heating structure, characterized in that, It includes a heating pack box body, a steam heating pipe, a steam valve, a safety air outlet pipe and an air outlet control valve. The heating pack box body is covered and installed on the steaming box. The steam heating pipe and the safety air outlet pipe are connected to the heating pack box body. The steam valve is arranged on the steam heating pipe, and the air outlet control valve is arranged on the safety air outlet pipe.

2. The heating structure according to claim 1, wherein, The air outlet control valve is set as a DN25 float valve.

3. The heating structure according to claim 1, characterized in that, The steam heating pipe is coated with a heat insulation layer.

4. The heating structure according to claim 3, wherein The heat insulation layer includes a base layer and a fixing layer. The base layer is made of rock wool or glass wool material, and the fixing layer is made of stainless steel spirally wound around the base layer.

5. The heating structure according to claim 1, characterized in that, The steam heating pipe includes a main pipe and multiple branch pipes. The multiple branch pipes are connected to the main pipe. The steam valve is arranged on the main pipe. There are multiple interfaces on the heating pack box body, and the multiple interfaces are arranged corresponding to the multiple branch pipes one by one. The interfaces are connected to the branch pipes through flanges.

6. The heating structure according to claim 1, characterized in that, The inner wall of the heating pack box body is filled with heat insulation cotton.

7. The heating structure according to claim 1, wherein The bottom of the heating pack box body is adapted to the shape of the steaming box and fits on the wall surface of the steaming box.

8. The heating structure according to claim 1, characterized in that, The heating pack box body is also provided with a box body inspection port. There is an opening and closing door on the box body inspection port. A hinge and a lock are arranged between the opening and closing door and the box body inspection port.

9. The heating structure according to claim 1, wherein The heating pack box body is provided with a water inlet and a water outlet.

10. An oil-water separator, characterized in that, It includes the heating structure according to any one of claims 1 to 9.

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