CSTR (continuous stirred-tank reactor) heat-preservation anaerobic fermentation tank

Abstract

The utility model discloses a CSTR (continuous stirred tank reactor) heat-preservation anaerobic fermentation tank, which relates to the technical field of fermentation tanks and comprises a tank body, a feed port and a discharge port which are fixedly connected to the outer side wall of the tank body and are arranged from top to bottom, a stirring mechanism connected with a top plate of the tank body, and a collecting mechanism arranged at the side part of the tank body, the stirring mechanism comprises a rotating shaft penetrating through the top plate of the tank body and rotationally connected with the top plate, an electric heating pipe fixedly mounted in the rotating shaft, and a stirring rod fixedly connected to the outer side wall of the rotating shaft; the collecting mechanism comprises an exhaust pipe fixedly connected to the outer side wall of the tank body, a temporary storage chamber fixedly connected to the outer side wall of the exhaust pipe, and a collecting tank arranged at the top of the temporary storage chamber and used for collecting fermented gas. According to the CSTR heat-preservation anaerobic fermentation tank disclosed by the utility model, the electric heating pipe is fixed on the inner side wall of the rotating shaft, so that raw materials can be comprehensively heated by heat under the action of heat transfer in the process that the rotating shaft achieves the rotation of the stirring rod.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation tanks, in particular to a CSTR heat-insulating anaerobic fermentation tank. Background Art

[0002] During anaerobic fermentation, the temperature inside the fermentation tank is an important control condition. As the existing anaerobic fermentation tanks are large in size, the fermentation temperature is easily affected by factors such as incomplete stirring and poor heat transfer coefficient of materials. In addition, the fermentation tanks are located outdoors and are easily affected by weather and seasons. Therefore, it is very difficult to evenly control the temperature inside the tank.

[0003] The existing solution is to install a heating device at the bottom of the fermenter and add a stirrer inside the fermenter. Although this method is helpful for regulating the temperature, it still cannot meet the heating requirements for the materials in the upper part of the fermenter. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a CSTR heat-insulating anaerobic fermentation tank, which solves the problem that the material at the upper part of the fermentation tank still cannot meet the heating requirement by setting a stirring mechanism.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A CSTR heat-insulating anaerobic fermentation tank comprises a tank body, a feed inlet and a discharge inlet fixedly connected to the outer wall of the tank body and arranged from top to bottom, a stirring mechanism connected to the top plate of the tank body, and a collecting mechanism arranged on the side of the tank body;

[0007] The stirring mechanism includes a rotating shaft penetrating through the top plate of the tank body and rotatably connected to the top plate, an electric heating tube fixedly installed inside the rotating shaft, and a stirring rod fixedly connected to the outer wall of the rotating shaft;

[0008] The collecting mechanism comprises an exhaust pipe fixedly connected to the outer wall of the tank body, a temporary storage chamber fixedly connected to the outer wall of the exhaust pipe, and a collecting tank arranged on the top of the temporary storage chamber for collecting post-fermentation gas.

[0009] Preferably, the stirring mechanism further comprises a driving motor fixedly connected to the top of the tank body, a main gear fixedly connected to the outer side wall of the output end of the driving motor, and a transmission gear fixedly connected to the outer side wall of the rotating shaft.

[0010] Preferably, the collecting mechanism further comprises a one-way valve fixedly mounted on the inner wall of the exhaust pipe, and clean water stored in the temporary storage chamber.

[0011] Preferably, the collection mechanism further comprises a pressure sensor fixedly connected to the interior of the temporary storage chamber, and an alarm light fixedly connected to the outer wall of the temporary storage chamber.

[0012] Preferably, the collection mechanism further comprises a discharge pipe fixedly connected to the top of the temporary storage chamber, an electric control valve fixedly installed inside the discharge pipe, and a sealing valve fixedly connected to the inner side wall of the collection tank opening;

[0013] The opening of the collecting tank is sleeved on the outer side wall of the discharge pipe.

[0014] Preferably, the collecting mechanism further comprises a fixing ring fixedly connected to the inner side wall of the opening of the collecting tank, and a sealing ring fixedly installed at the bottom of the fixing ring.

[0015] Preferably, the collecting mechanism also includes a positioning block fixedly connected to the outer wall of the discharge pipe, a positioning groove opened on the inner wall of the collecting tank, a spring groove opened on the outer wall of the positioning block, an electromagnet embedded in the spring groove, a connecting spring fixedly connected to the inner wall of the spring groove, a locking block fixedly connected to the end face of the connecting spring, and a locking groove opened on the inner wall of the positioning groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, the raw materials are transported from the feed port to the inside of the tank body, and the electric heating tube and the driving motor are driven thereby, so that the driving motor drives the main gear to rotate, and then drives the transmission gear meshing therewith to rotate, thereby driving the rotating shaft and the stirring rod to rotate, because the electric heating tube is fixed to the inner wall of the rotating shaft, and thus the raw materials can be fully heated.

[0018] 2. In the utility model, the opening of the collecting tank is sleeved on the outer surface of the discharge pipe, and the positioning block cooperates with the positioning groove so that the locking groove can quickly face the spring groove, and then the electromagnet is powered off, so that the locking block is inserted into the interior of the locking groove under the action of the connecting spring, so as to fix the collecting tank. Thereafter, the electric control valve and the sealing valve are opened to connect the collecting tank with the temporary storage chamber. At this time, during the fermentation process inside the tank body, the methane and other gases produced by the anaerobic fermentation will be transported to the interior of the temporary storage chamber through the exhaust pipe, and finally enter the collecting tank to be collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the structure in the middle.

[0024] In the figure: 1. tank body; 2. feed port; 3. discharge port; 401. rotating shaft; 402. electric heating tube; 403. stirring rod; 404. driving motor; 405. main gear; 406. transmission gear; 501. exhaust pipe; 502. temporary storage chamber; 503. collecting tank; 504. one-way valve; 505. pressure sensor; 506. alarm light; 507. discharge pipe; 508. electric control valve; 509. fixing ring; 5010. sealing ring; 5011. positioning block; 5012. electromagnet; 5013. connecting spring; 5014. locking block; 5015. sealing valve. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] Embodiment 1: Figure 1-5 As shown, a CSTR insulated anaerobic fermentation tank includes a tank body 1, a feed port 2 and a discharge port 3 fixedly connected to the outer wall of the tank body 1 and arranged from top to bottom, a stirring mechanism connected to the top plate of the tank body 1, and a collecting mechanism arranged on the side of the tank body 1;

[0027] Preferably, the tank body is made of heat-insulating material to improve the heat-insulating effect.

[0028] The stirring mechanism includes a rotating shaft 401 that penetrates through the top plate of the tank body 1 and is rotatably connected to the top plate, an electric heating tube 402 that is fixedly installed inside the rotating shaft 401, and a stirring rod 403 that is fixedly connected to the outer wall of the rotating shaft 401;

[0029] The collecting mechanism includes an exhaust pipe 501 fixedly connected to the outer wall of the tank body 1, a temporary storage chamber 502 fixedly connected to the outer wall of the exhaust pipe 501, and a collecting tank 503 arranged on the top of the temporary storage chamber 502 for collecting post-fermentation gas.

[0030] The stirring mechanism also includes a driving motor 404 fixedly connected to the top of the tank body 1, a main gear 405 fixedly connected to the outer wall of the output end of the driving motor 404, and a transmission gear 406 fixedly connected to the outer wall of the rotating shaft 401, wherein the main gear 405 is meshed with the transmission gear 406, and the controller of the electric heating tube 402 can be fixedly connected to the top of the rotating shaft 401.

[0031] The raw materials are transported from the feed port 2 to the interior of the tank body 1, and the electric heating tube 402 and the driving motor 404 are driven thereby, so that the driving motor 404 drives the main gear 405 to rotate, and then drives the transmission gear 406 meshing therewith to rotate, thereby driving the rotating shaft 401 and the stirring rod 403 to rotate. Because the electric heating tube 402 is fixed to the inner wall of the rotating shaft 401, the raw materials can be fully heated.

[0032] Embodiment 2: Figure 1-5 As shown, a CSTR insulated anaerobic fermentation tank includes a tank body 1, a feed port 2 and a discharge port 3 fixedly connected to the outer wall of the tank body 1 and arranged from top to bottom, a stirring mechanism connected to the top plate of the tank body 1, and a collecting mechanism arranged on the side of the tank body 1;

[0033] The stirring mechanism includes a rotating shaft 401 that penetrates through the top plate of the tank body 1 and is rotatably connected to the top plate, an electric heating tube 402 that is fixedly installed inside the rotating shaft 401, and a stirring rod 403 that is fixedly connected to the outer wall of the rotating shaft 401;

[0034] The collecting mechanism includes an exhaust pipe 501 fixedly connected to the outer wall of the tank body 1, a temporary storage chamber 502 fixedly connected to the outer wall of the exhaust pipe 501, and a collecting tank 503 arranged on the top of the temporary storage chamber 502 for collecting post-fermentation gas.

[0035] The collecting mechanism also includes a one-way valve 504 fixedly installed on the inner wall of the exhaust pipe 501, and clean water stored in the temporary storage chamber 502, wherein the liquid level of the clean water is higher than the connection port between the exhaust pipe 501 and the temporary storage chamber 502, wherein the one-way valve 504 prevents air from entering the interior of the tank body 1 from the exhaust pipe 501, thereby damaging the anaerobic environment therein and affecting the effect of anaerobic fermentation.

[0036] The collection mechanism also includes a pressure sensor 505 fixedly connected to the interior of the temporary storage chamber 502, and an alarm light 506 fixedly connected to the outer wall of the temporary storage chamber 502, wherein the pressure sensor 505 is electrically connected to the alarm light 506. When the pressure sensor 505 detects that the internal pressure of the temporary storage chamber 502 reaches a set value, the alarm light 506 will be activated to alert the operator.

[0037] The collection mechanism also includes a discharge pipe 507 fixedly connected to the top of the temporary storage chamber 502, an electric control valve 508 fixedly installed inside the discharge pipe 507, and a sealing valve 5015 fixedly connected to the inner side wall of the opening of the collection tank 503;

[0038] The opening of the collecting tank 503 is sleeved on the outer wall of the discharge pipe 507 , wherein the inner diameter of the opening of the collecting tank 503 is equal to the outer diameter of the discharge pipe 507 .

[0039] The collection mechanism also includes a fixing ring 509 fixedly connected to the inner wall of the opening of the collection tank 503, and a sealing ring 5010 fixedly installed at the bottom of the fixing ring 509, wherein the central axis of the fixing ring 509 coincides with the central axis of the sealing ring 5010, and the inner diameter of the sealing ring 5010 is smaller than the inner diameter of the fixing ring 509, and the sealing ring 5010 is used to improve the sealing between the collection tank 503 and the temporary storage chamber 502.

[0040] The collecting mechanism also includes a positioning block 5011 fixedly connected to the outer wall of the discharge pipe 507, a positioning groove provided on the inner wall of the collecting tank 503, a spring groove provided on the outer wall of the positioning block 5011, an electromagnet 5012 embedded in the spring groove, a connecting spring 5013 fixedly connected to the inner wall of the spring groove, a locking block 5014 fixedly connected to the end face of the connecting spring 5013, and a locking groove provided on the inner wall of the positioning groove, wherein the locking block 5014 is made of ferromagnetic material, and the positioning block 5011 cooperates with the positioning groove so that the locking groove can quickly face the spring groove, and by cutting off the power to the electromagnet 5012, the locking block 5014 is inserted into the interior of the locking groove under the action of the connecting spring 5013, thereby fixing the collecting tank 503.

[0041] By sleeve-fitting the opening of the collecting tank 503 on the outer surface of the discharge pipe 507, and by the cooperation of the positioning block 5011 and the positioning groove, the locking groove can be quickly aligned with the spring groove, and then the electromagnet 5012 is powered off, so that the locking block 5014 is plugged into the interior of the locking groove under the action of the connecting spring 5013, so as to fix the collecting tank 503, and then the electric control valve 508 and the sealing valve 5015 are opened, so that the collecting tank 503 is connected to the temporary storage chamber 502. At this time, during the fermentation process inside the tank body 1, the gas generated will be transported to the interior of the temporary storage chamber 502 through the exhaust pipe 501, and finally enter the collecting tank 503. When the gas continues to enter the temporary storage chamber 502, the internal pressure of the temporary storage chamber 502 will increase until the pressure sensor 505 detects that the internal pressure of the temporary storage chamber 502 reaches the set value, and then the alarm light 506 will be activated to remind the operator to replace the collecting tank 503.

Claims

1. A CSTR heat-insulating anaerobic fermentation tank, comprising a tank body (1), a feed inlet (2) and a discharge outlet (3) fixedly connected to the outer wall of the tank body (1) and arranged from top to bottom, It is characterized in that It also includes a stirring mechanism connected to the top plate of the tank body (1), and a collecting mechanism arranged on the side of the tank body (1); The stirring mechanism comprises a rotating shaft (401) penetrating the top plate of the tank body (1) and rotatably connected to the top plate, an electric heating tube (402) fixedly mounted inside the rotating shaft (401), and a stirring rod (403) fixedly connected to the outer wall of the rotating shaft (401); The collecting mechanism comprises an exhaust pipe (501) fixedly connected to the outer wall of the tank body (1), a temporary storage chamber (502) fixedly connected to the outer wall of the exhaust pipe (501), and a collecting tank (503) arranged on the top of the temporary storage chamber (502) for collecting post-fermentation gas.

2. A CSTR insulated anaerobic fermentation tank according to claim 1, Features: The stirring mechanism further comprises a driving motor (404) fixedly connected to the top of the tank body (1), a main gear (405) fixedly connected to the outer wall of the output end of the driving motor (404), and a transmission gear (406) fixedly connected to the outer wall of the rotating shaft (401).

3. A CSTR heat-insulating anaerobic fermentation tank according to claim 2, Features: The collection mechanism also includes a one-way valve (504) fixedly mounted on the inner wall of the exhaust pipe (501), and clean water stored in the temporary storage chamber (502).

4. A CSTR heat-insulating anaerobic fermentation tank according to claim 3, Features: The collection mechanism further comprises a pressure sensor (505) fixedly connected to the interior of the temporary storage chamber (502), and an alarm light (506) fixedly connected to the outer wall of the temporary storage chamber (502).

5. A CSTR heat-insulating anaerobic fermentation tank according to claim 4, Features: The collection mechanism further includes a discharge pipe (507) fixedly connected to the top of the temporary storage chamber (502), an electric control valve (508) fixedly installed inside the discharge pipe (507), and a sealing valve (5015) fixedly connected to the inner side wall of the opening of the collection tank (503); The opening of the collection tank (503) is sleeved on the outer side wall of the discharge pipe (507).

6. A CSTR heat-insulating anaerobic fermentation tank according to claim 5, Features: The collection mechanism further comprises a fixing ring (509) fixedly connected to the inner side wall of the opening of the collection tank (503), and a sealing ring (5010) fixedly installed at the bottom of the fixing ring (509).

7. A CSTR heat-insulating anaerobic fermentation tank according to claim 6, Features: The collecting mechanism further comprises a positioning block (5011) fixedly connected to the outer wall of the discharge pipe (507), a positioning groove provided on the inner wall of the collecting tank (503), a spring groove provided on the outer wall of the positioning block (5011), an electromagnet (5012) embedded in the spring groove, a connecting spring (5013) fixedly connected to the inner wall of the spring groove, a locking block (5014) fixedly connected to the end face of the connecting spring (5013), and a locking groove provided on the inner wall of the positioning groove.

Images