Heating and heat preservation device for anaerobic fermentation equipment

Abstract

The utility model relates to the field of anaerobic fermentation equipment, in particular to a heating and heat preservation device for anaerobic fermentation equipment, which comprises a fermentation tank uniformly divided into a plurality of control areas, a water inlet pipe unit and a water return pipe unit are arranged at the bottom of the fermentation tank; the water inlet pipe unit is connected with a plurality of first water inlet branch pipes; the water inlet pipe unit is connected with a front-section heating electric knife gate valve and a middle-section heating electric knife gate valve in a fourth control area; the water inlet pipe unit is connected with a rear-section heating electric knife gate valve at the eighth control area; the water inlet pipe is connected with a plurality of fifth water inlet branch pipes which are uniformly distributed in the ninth control area and the tenth control area at the tail end of the fermentation tank; the first material level meter and the second material level meter are used for monitoring the liquid level in the fermentation tank; the first level gage and the second level gage are in signal connection with a controller, and the controller is in signal connection with the front-section heating electric knife gate valve, the middle-section heating electric knife gate valve and the rear-section heating electric knife gate valve. According to the utility model, the timeliness of fermentation temperature control can be maintained, and the fermentation effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of anaerobic fermentation equipment, in particular to a heating and heat preservation device used for anaerobic fermentation equipment. Background Art

[0002] Temperature is related to the type, quantity and activity of microorganisms in the anaerobic fermentation process, making temperature an important indicator in the anaerobic fermentation process. If the anaerobic fermentation engineering equipment is to operate stably all year round and maintain a constant and efficient gas production, the temperature in the fermentation process must be strictly controlled.

[0003] For temperature control, the existing anaerobic fermentation segmented temperature control system and method, it relates to an anaerobic fermentation temperature control system and method, to solve the problem that the existing anaerobic fermentation temperature control system and method cannot make the fermentation tank heated evenly, has poor temperature control accuracy, poor adaptability and poor reliability of the fermentation process. It includes a solvent heating tank, a heater, a first temperature sensor, a circulation pump and an anaerobic fermentation tank, a heater is installed in the solvent heating tank, and the first temperature sensor is installed on the solvent heating tank; the system also includes a proportional regulating valve, two switch valves and two second temperature sensors, the inlet of the proportional regulating valve is connected to the outlet of the solvent heating tank through the circulation pump, the outlet of the upper heating jacket and the outlet of the lower heating jacket of the anaerobic fermentation tank are both connected to the inlet of the solvent heating tank, and a second temperature sensor is respectively installed at the upper and lower parts of the anaerobic fermentation tank.

[0004] However, when there are differences in the raw materials used in anaerobic fermentation, if the existing fermentation temperature control is simply performed according to the temperature value, the temperature will not change in time under the control conditions, and the appropriate fermentation conditions cannot be maintained, which can easily lead to poor fermentation effects. Utility Model Content

[0005] The utility model aims to provide a heating and heat preservation device for anaerobic fermentation equipment to solve the problem of poor fermentation effect caused by untimely temperature control.

[0006] The heating and heat preservation device for anaerobic fermentation equipment in this scheme comprises a horizontal fermentation tank, on the outer side wall of which a plurality of fixing bars are fixed to divide the fermentation tank into a plurality of control areas;

[0007] The bottom of the fermentation tank is provided with an inlet pipe unit for feeding water into the fermentation tank and a return pipe unit for returning the inlet water, and the inlet pipe unit is located above the return pipe unit;

[0008] The water inlet pipe unit is connected to a plurality of first water inlet branches evenly distributed in the first and second control areas close to the water inlet end of the fermenter;

[0009] The water inlet pipe unit is connected to a front section heating electric knife gate valve and a middle section heating electric knife gate valve at the fourth control area, the output end of the front section heating electric knife gate valve is connected to a plurality of second water inlet branches evenly distributed in the third and fourth control areas, and the output end of the middle section heating electric knife gate valve is connected to a plurality of third water inlet branches evenly distributed in the fourth, fifth and sixth control areas;

[0010] The water inlet pipe unit is connected to a rear-stage heating electric knife gate valve at the eighth control area, and the output end of the rear-stage heating electric knife gate valve is connected to a plurality of fourth water inlet branches located in the seventh, eighth, ninth and tenth control areas;

[0011] Also included are a first level meter and a second level meter for monitoring the liquid level in the fermentation tank, wherein the first level meter is located in the second control area, and the second level meter is located in the seventh control area;

[0012] The first material level meter and the second material level meter are signal-connected to a controller, and the controller is signal-connected to a front-section heating electric knife gate valve, a middle-section heating electric knife gate valve and a rear-section heating electric knife gate valve.

[0013] The beneficial effects of this program are:

[0014] The fermentation tank is divided into multiple control areas by the fixed bars of the fermentation tank itself, and each control area is equipped with evenly distributed water inlet pipes and a material level meter at a fixed position. The temperature can be accurately and quickly controlled according to the real-time material level in the fermentation tank. The temperature control of each area is more timely, and the fermentation temperature required by the fermentation tank is maintained to meet the demand, thereby improving the fermentation effect.

[0015] Further, the water inlet pipe unit includes a first water inlet pipeline, a second water inlet pipeline, a third water inlet pipeline and a fourth water inlet pipeline connected in sequence from the water inlet end of the fermentation tank, and the return water pipe unit includes a first return water pipeline, a second return water pipeline, a third return water pipeline, a fourth return water pipeline and a fifth return water pipeline connected in sequence from the water inlet end of the fermentation tank.

[0016] The beneficial effect is that the connection of multiple water inlet pipelines and water return pipelines can facilitate the water inlet and water return control of different sections, so as to perform segmented temperature control on the fermentation tank, making the temperature control more accurate.

[0017] Furthermore, the first water inlet branch is connected to the first water inlet pipeline, the front section heating electric knife gate valve is located on the first water inlet pipeline, the middle section heating electric knife gate valve is located on the pipeline leading out of the first water inlet pipeline, and the rear section heating electric knife gate valve is located on the pipeline leading out of the fourth water inlet pipeline.

[0018] The beneficial effect is that the smooth flow of hot water for heating can be ensured by setting the electric knife gate valves at each section.

[0019] Furthermore, the third water inlet pipeline is connected with a water inlet valve for water inlet and a water outlet valve for water outlet.

[0020] The beneficial effect is that the circulation of hot water can be facilitated by setting the water inlet valve and the water outlet valve.

[0021] Furthermore, a heat exchange tube unit is provided at the water inlet end of the fermentation tank, and the heat exchange tube unit is connected to the water inlet tube unit through a transition pipe. The heat exchange tube units are evenly distributed at the water inlet end of the fermentation tank.

[0022] The beneficial effect is that by connecting the heat exchange tube unit and the water inlet tube unit, there is no need to obtain and transfer additional water sources.

[0023] Furthermore, the heat exchange tube unit includes a first heat exchange tube, a second heat exchange tube, a third heat exchange tube and a fourth heat exchange tube, and the heat exchange tube units are evenly distributed vertically at the water inlet end of the fermentation tank.

[0024] The beneficial effect is that the arrangement of multiple heat exchange tubes can contact one end of the fermentation tank with the maximum area, and the temperature of the fermentation tank can be adjusted quickly and accurately.

[0025] Furthermore, a first channel steel water inlet pipe and a second channel steel water inlet pipe are connected to the transition pipe, and the height of the first channel steel water inlet pipe is greater than the height of the second channel steel water inlet pipe.

[0026] The beneficial effect is that, by setting the channel steel water inlet pipe, it is possible to add water for balance when the water pressure in the heat exchange tube changes.

[0027] Furthermore, the height of the second channel steel water inlet pipe is half of the height of the first channel steel water inlet pipe.

[0028] The beneficial effect is that the water pressure of each heat exchange tube can be quickly balanced by setting the height difference of the channel steel water inlet pipe.

[0029] Furthermore, an air pipe for conducting away biogas is connected to the top of the middle part of the fermentation tank, a positive and negative pressure protection device is connected to the air pipe, and the air pipe is connected to a heater for heating the water source of the water inlet pipe unit.

[0030] The beneficial effect is that through the setting of the air duct, the biogas in the anaerobic fermentation process can be burned according to the actual application needs, the resources are more fully utilized, the cost of heating and insulation control is saved, and the positive and negative pressure protection devices can prevent the pressure in the tank from being too high or too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a front view of the pipeline arrangement in the embodiment of the heating and heat preservation device for anaerobic fermentation equipment of the utility model;

[0032] Figure 2 for Figure 1 A top view of the piping arrangement;

[0033] Figure 3 for Figure 1 An enlarged schematic diagram of the middle section branch pipeline;

[0034] Figure 4 for Figure 1 Left view of . DETAILED DESCRIPTION

[0035] The following is further explained in detail through specific implementation methods.

[0036] The figure marks in the drawings of the specification include: a first water inlet pipeline 1, a first water return pipeline 2, a first pipeline support 3, a second pipeline support 4, a second water return pipeline 5, a second water inlet pipeline 6, a third water inlet pipeline 7, a third water return pipeline 8, a fourth water return pipeline 9, a fourth water inlet pipeline 10, a fifth water return pipeline 11, a ground 12, an aluminum-plastic pipeline 13, a third pipeline support 14, a fourth pipeline support 15, a third channel steel water inlet pipeline 16, a front section heating electric knife gate valve 17, a middle section heating electric knife gate valve 18, a rear section heating electric knife gate valve 19, a first heat exchange tube 20, a second heat exchange tube 21, a third heat exchange tube 22, a fourth heat exchange tube 23, a channel steel return pipeline 24, a second channel steel water inlet pipeline 25, a first channel steel water inlet pipeline 26, a first material level meter 27, a second material level meter 28, a fixing bar 29, a water inlet valve 30, a water outlet valve 31, and a fermentation tank 32.

[0037] Embodiment 1

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a heating and heat preservation device for anaerobic fermentation equipment includes a horizontal fermentation tank 32, on the outer wall of which a plurality of fixing bars 29 are fixedly arranged for equally dividing the fermentation tank 32 into a plurality of control areas, so as to ensure the stability of the fermentation tank 32 when installed on the ground 12. The control areas are divided into ten control areas in total, which are named as the first, second, third, fourth, ..., tenth control areas respectively according to the water inlet end of the fermentation tank 32 as the starting point.

[0039] An inlet pipe unit for supplying water to the fermenter 32 and a return pipe unit for returning the inlet water are installed at the bottom of the fermenter 32. The inlet pipe unit is located above the return pipe unit. The inlet pipe unit is connected to a plurality of first inlet branches that are evenly distributed in the first and second control areas close to the water inlet end of the fermenter 32. Two first inlet branches are respectively arranged in the first and second control areas.

[0040] The water inlet pipe unit is connected to the front section heating electric knife gate valve 17 and the middle section heating electric knife gate valve 18 at the fourth control area. The output end of the front section heating electric knife gate valve 17 is connected to multiple second water inlet branches evenly distributed in the third and fourth control areas, and two second water inlet branches are set in the third control area. The output end of the middle section heating electric knife gate valve 18 is connected to multiple third water inlet branches evenly distributed in the fourth, fifth and sixth control areas, that is, one second water inlet branch and one third water inlet branch are set in the fourth control area, and two third water inlet branches are set in the fifth and sixth control areas. The water inlet pipe unit is connected to the rear section heating electric knife gate valve 19 at the eighth control area. The output end of the rear section heating electric knife gate valve 19 is connected to multiple fourth water inlet branches located in the seventh, eighth, ninth and tenth control areas, and two fourth water inlet branches are set in the seventh, eighth, ninth and tenth control areas.

[0041] It also includes a first level meter 27 and a second level meter 28 for monitoring the liquid level in the fermentation tank 32. The first level meter 27 is located in the second control area, and the second level meter 28 is located in the seventh control area. The signals of the first level meter 27 and the second level meter 28 are connected to a controller. The controller can use an existing PLC controller. The controller signal is connected to the front-end heating electric knife gate valve 17, the middle-end heating electric knife gate valve 18 and the rear-end heating electric knife gate valve 19.

[0042] The water inlet pipe unit includes a first water inlet pipeline 1, a second water inlet pipeline 6, a third water inlet pipeline 7 and a fourth water inlet pipeline 10 connected in sequence from the water inlet end of the fermenter 32, the interface ends of the first water inlet pipeline 1, the second water inlet pipeline 6, the third water inlet pipeline 7 and the fourth water inlet pipeline 10 are connected through a flange, and each water inlet pipeline of the water inlet pipe unit is supported by a first pipe support 3 and stands on the ground 12, and the return pipe unit includes a first return water pipeline 2, a second return water pipeline 5, a third return water pipeline 8, a fourth return water pipeline 9 and a fifth return water pipeline 11 connected in sequence from the water inlet end of the fermenter 32, and the interface ends of the first return water pipeline 2, the second return water pipeline 5, the third return water pipeline 8, the fourth return water pipeline 9 and the fifth return water pipeline 11 are connected through a flange. Each return water pipeline of the return water pipe unit is supported by a second pipe support 4 and stands on the ground 12.

[0043] The first water inlet branch is connected to the first water inlet pipeline 1, the front section heating electric knife gate valve 17 is located on the first water inlet pipeline 1, the middle section heating electric knife gate valve 18 is located on the pipeline leading out of the first water inlet pipeline 1, and the rear section heating electric knife gate valve 19 is located on the pipeline leading out of the fourth water inlet pipeline 10. The third water inlet pipeline 7 is connected with a water inlet valve 30 for water inlet and a water outlet valve 31 for water outlet.

[0044] like Figure 4 As shown, a heat exchange tube unit is provided at the water inlet end of the fermentation tank 32, and the heat exchange tube unit is connected to the water inlet tube unit through a transition pipe. The heat exchange tube unit is evenly distributed at the water inlet end of the fermentation tank 32, which is the left end of the fermentation tank 32. The heat exchange tube unit includes a first heat exchange tube 20, a second heat exchange tube 21, a third heat exchange tube 22 and a fourth heat exchange tube 23. The heat exchange tube unit is arranged vertically at the water inlet end of the fermentation tank 32 and evenly distributed in the transverse direction. A channel steel return pipe 24 is connected to the transition pipe, and a first channel steel inlet pipe 26 and a second channel steel inlet pipe 25 are connected to the transition pipe. The height of the first channel steel inlet pipe 26 is greater than that of the second channel steel inlet pipe 25, and the height of the channel steel return pipe 24 is greater than that of the first channel steel inlet pipe 26. The height of the second channel steel inlet pipe is half of the height of the first channel steel inlet pipe. The fourth water inlet pipeline 10 is connected to the third channel steel water inlet pipeline 16, which is connected to the right end of the fermentation tank 32, and the bent sections of each channel steel water inlet pipe are connected by the aluminum-plastic pipe 13. The third pipe support 14 and the fourth pipe support 15 support the pipes below the fermentation tank 32 respectively.

[0045] The specific implementation process is as follows:

[0046] During fermentation, heating and heat exchange are performed through pipes evenly arranged on the outer wall of the fermentation tank 32, and the temperature of the fermentation tank 32 can be controlled in sections, so that the temperature control is more in line with actual needs, and the feedback of the temperature after control is more timely and rapid. In this embodiment, the fermentation tank 32 is divided into multiple control areas by the fixing bar 29 of the fermentation tank 32 itself, and a uniformly arranged water inlet pipe is arranged in each control area, and a material level meter is arranged at a fixed position, so that the temperature of the fermentation tank 32 can be accurately and quickly controlled according to the real-time material level in the fermentation tank 32, and the temperature control of each area is more timely, so that the fermentation temperature required by the fermentation tank 32 is maintained to meet the needs and improve the fermentation effect.

[0047] Embodiment 2

[0048] The heating and insulation device for anaerobic fermentation equipment is different from the embodiment 1 in that an air duct for conducting biogas is connected to the top of the middle part of the fermentation tank 32, and the air duct is connected to a positive and negative pressure protection device. The positive and negative pressure protection device uses a positive and negative pressure protector product based on the principle of an existing communicating vessel, such as a product with an emergency exhaust valve and a positive and negative pressure protection unit in an existing product. When the pressure in the tank is greater than the liquid seal pressure of the positive and negative pressure protector, the gas will be exhausted through the positive and negative pressure protector. The specific structure will not be repeated here. The air duct is connected to a heater for heating water to burn the biogas and save energy.

[0049] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A heating and heat preservation device for anaerobic fermentation equipment, comprising a horizontal fermentation tank, wherein a plurality of fixing bars are fixed on the outer wall of the fermentation tank to divide the fermentation tank into a plurality of control areas; characterized in that: The bottom of the fermentation tank is provided with an inlet pipe unit for feeding water into the fermentation tank and a return pipe unit for returning the inlet water, and the inlet pipe unit is located above the return pipe unit; The water inlet pipe unit is connected to a plurality of first water inlet branches evenly distributed in the first and second control areas close to the water inlet end of the fermenter; The water inlet pipe unit is connected to a front section heating electric knife gate valve and a middle section heating electric knife gate valve at the fourth control area, the output end of the front section heating electric knife gate valve is connected to a plurality of second water inlet branches evenly distributed in the third and fourth control areas, and the output end of the middle section heating electric knife gate valve is connected to a plurality of third water inlet branches evenly distributed in the fourth, fifth and sixth control areas; The water inlet pipe unit is connected to a rear-stage heating electric knife gate valve at the eighth control area, and the output end of the rear-stage heating electric knife gate valve is connected to a plurality of fourth water inlet branches located in the seventh, eighth, ninth and tenth control areas; Also included are a first level meter and a second level meter for monitoring the liquid level in the fermentation tank, wherein the first level meter is located in the second control area, and the second level meter is located in the seventh control area; The first material level meter and the second material level meter are signal-connected to a controller, and the controller is signal-connected to a front-section heating electric knife gate valve, a middle-section heating electric knife gate valve and a rear-section heating electric knife gate valve.

2. The heating and heat preservation device for anaerobic fermentation equipment according to claim 1, characterized in that: The water inlet pipe unit includes a first water inlet pipeline, a second water inlet pipeline, a third water inlet pipeline and a fourth water inlet pipeline connected in sequence from the water inlet end of the fermentation tank, and the return water pipe unit includes a first return water pipeline, a second return water pipeline, a third return water pipeline, a fourth return water pipeline and a fifth return water pipeline connected in sequence from the water inlet end of the fermentation tank.

3. The heating and heat preservation device for anaerobic fermentation equipment according to claim 2, characterized in that: The first water inlet branch is connected to the first water inlet pipeline, the front section heating electric knife gate valve is located on the second water inlet pipeline, the middle section heating electric knife gate valve is located on the pipeline leading out of the second water inlet pipeline, and the rear section heating electric knife gate valve is located on the pipeline leading out of the fourth water inlet pipeline.

4. The heating and heat preservation device for anaerobic fermentation equipment according to claim 3, characterized in that: The third water inlet pipeline is connected with a water inlet valve for water inlet and a water outlet valve for water outlet.

5. The heating and heat preservation device for anaerobic fermentation equipment according to claim 1, characterized in that: A heat exchange tube unit is provided at the water inlet end of the fermentation tank. The heat exchange tube unit is connected to the water inlet tube unit through a transition pipe. The heat exchange tube units are evenly distributed at the water inlet end of the fermentation tank.

6. The heating and heat preservation device for anaerobic fermentation equipment according to claim 5, characterized in that: The heat exchange tube unit comprises a first heat exchange tube, a second heat exchange tube, a third heat exchange tube and a fourth heat exchange tube, and the heat exchange tube units are evenly distributed vertically at the water inlet end of the fermentation tank.

7. The heating and heat preservation device for anaerobic fermentation equipment according to claim 5, characterized in that: A first channel steel water inlet pipe and a second channel steel water inlet pipe are connected to the transition pipe, and the height of the first channel steel water inlet pipe is greater than the height of the second channel steel water inlet pipe.

8. The heating and heat preservation device for anaerobic fermentation equipment according to claim 7, characterized in that: The height of the second channel steel water inlet pipe is half of the height of the first channel steel water inlet pipe.

9. The heating and heat preservation device for anaerobic fermentation equipment according to any one of claims 1 to 8, characterized in that: An air guide pipe for guiding away biogas is connected to the top of the middle part of the fermentation tank, a positive and negative pressure protection device is connected to the air guide pipe, and the air guide pipe is connected to a heater for heating the water source of the water inlet pipe unit.

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