CN212476741U - Strengthen biogas fermentation cylinder of stirring - Google Patents

Abstract

The utility model discloses a biogas fermentation tank with enhanced stirring, which comprises a fermentation tank body, wherein a horizontal stirring shaft is erected on the fermentation tank body through a sealing ring, and the horizontal stirring shaft is provided with a plug flow impeller and a spoon-shaped stirring blade; two ends of the horizontal stirring shaft are connected with a bearing, a bearing seat and a vertical column, and the vertical column is connected with the annular support frame at the bottom of the tank and the lower surface of the outer edge support; the upper tank body is provided with a feeding pipe which is communicated with the gas storage pool through a screw-in connector; the lower tank body is provided with an annular heating pipe and a discharge pipe, and the discharge pipe is provided with a rotary sieve plate; the horizontal stirring shaft is connected with the spiral tooth sections of the first worm wheel, the first worm, the second worm wheel and the second worm, and the second worm is connected with the gearbox and the motor. The utility model discloses a cooperation stirring of plug flow impeller and spoon shape stirring leaf realizes transversely pushing away STREAMING stirring, prevents effectively that the solid from subsiding unfavorable phenomena such as hardening, gluing because of gravity, stirs efficiently, and installation, dismantlement and maintenance are comparatively convenient, and it is little to take up an area of the space, is worth using widely.

Description

Strengthen biogas fermentation cylinder of stirring

Technical Field

The utility model relates to the technical field of, especially, relate to a strengthen biogas fermentation tank of stirring.

Background

The development of agricultural wastes biogas and biogas is an important means for treating straw burning pollution. However, the mixing and stirring design of the biogas engineering has often resulted in a lot of energy waste and inefficient operation of the biogas engineering due to the difficulty in determining the optimal operation parameters of the stirring equipment, and therefore, it is necessary to develop research aiming at the existing problems.

The mixing and stirring can improve the effective conversion rate of organic matters and maintain the stability of the anaerobic digestion process, which is well known by most scholars, and the anaerobic digestion process of high-concentration materials is easy to generate the problems of concentration inhibition, difficult mass transfer and the like, thereby having the practicability of applying the mixing and stirring operation. At present, mechanical stirring is the most effective means for solving various problems in the anaerobic digestion process of high-concentration materials due to the obvious advantages of three stirring modes of gas stirring, hydraulic stirring and mechanical stirring.

Mechanical agitators in the field of anaerobic digestion are generally classified into axial flow type, radial flow type and mixed flow type because of the difference in the flow direction of fluid near the impeller. The push type stirrer is a representative of an axial flow type, has the advantages of strong axial flow, high circulation rate and the like, but has smaller shearing force; the radial flow type is represented by a straight blade disc worm-gear stirrer, the high-speed shearing at the tail end of the blade can form good turbulent diffusion, but layered circulation taking the blade as a boundary is easy to form, so that the uniform mixing of materials is difficult, and the defects brought by singly using an axial flow type stirrer or a radial flow type stirrer need to be overcome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a stirring-reinforced biogas fermentation tank.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a biogas fermentation tank with enhanced stirring comprises a fermentation tank body, wherein the fermentation tank body is formed by assembling an upper tank body and a lower tank body, the upper tank body and the lower tank body are two symmetrical semi-ellipsoidal shells, the bottom edge of the upper tank body and the top edge of the lower tank body are fixedly connected with horizontal elliptical flanges respectively, the upper tank body and the lower tank body are fastened together through the elliptical flanges and bolts, and the fermentation tank body forms an eggshell-like sealed shell;

the edge of the bottom of the upper tank body is provided with two symmetrical semicircular grooves, the edge of the top of the lower tank body is also provided with two symmetrical semicircular grooves, the semicircular grooves form two circular through holes, sealing rings are nested in the circular through holes, horizontal stirring shafts are erected on the two sealing rings, the parts of the horizontal stirring shafts in the fermentation tank body are provided with plug flow impellers and spoon-shaped stirring blades, the spoon-shaped stirring blades are positioned at the central position of the fermentation tank body, and a plurality of groups of plug flow impellers are symmetrically distributed along the central position of the fermentation tank body;

two ends of the horizontal stirring shaft extending out of the fermentation tank body are respectively connected with bearings in a penetrating manner, the bearings are fixedly arranged on the side wall of the bearing block, one side of the bearing block, which is far away from the bearing block, is fixed on the side wall of the upright column, the bottom end of the upright column is fixedly connected to the upper surface of the annular support frame at the bottom of the tank, the top end of the upright column is fixedly connected to the lower surface of the outer edge support, and the outer edge support is; a feed pipe is arranged in the center of the top surface of the upper tank body, a screw thread is arranged in the feed pipe and is sleeved with a screw-in connector through a screw thread, the screw-in connector is specifically an NWG6-15041201-02 screw thread screw-in type quick connector, the outer contour of the bottom of the screw-in connector is fixedly arranged on the outer wall of the feed pipe through a flexible hinge, and the top of the screw-in connector is provided with an air outlet and is communicated with an air storage pool through an air duct;

an annular heating pipe is fixedly connected in the lower tank body, and a discharge pipe is fixedly connected at the center of the bottom surface of the lower tank body;

the one end of horizontal (mixing) shaft has cup jointed first worm wheel, and the first worm wheel meshing has cup jointed the second worm wheel at the spiral tooth section on second worm, the smooth section of first worm lower part, and the second worm wheel meshing is at the spiral tooth section of second worm, and the output at the gearbox is connected to the smooth section of second worm one end, and the input of gearbox is connected with motor spindle, and motor spindle is connected with the motor.

Preferably, an L-shaped movable rod is movably inserted into the side wall of the discharge pipe in a penetrating mode, a straight rod of the L-shaped movable rod divides the discharge pipe equally, the part, inserted into the discharge pipe, of the L-shaped movable rod is embedded in the rotary sieve plate and divides the rotary sieve plate equally, and the minimum gap between the rotary sieve plate and the discharge pipe is 3-5 mm. The L movable rod is used as a handle part for controlling the rotation of the rotary sieve plate, the small holes are formed in the rotary sieve plate, the plate is vertically arranged in a biogas fermentation stirring stage, stirring cannot be influenced, the plate is rotated to be horizontally arranged when biogas residues are discharged, biogas slurry and large-particle biogas residues can be separated as required, and solid-liquid separation of fermentation waste is realized.

Preferably, the rod part of the spoon-shaped stirring blade is fixedly connected with the horizontal stirring shaft in a cross-shaped way, and two ends of the spoon-shaped stirring blade are provided with reversely symmetrical scoops; the impeller consists of two inverted symmetrical horn-shaped hollow rods.

The spoon-shaped stirring blade is a main stirrer of the utility model, is different from a common stirrer, the outer end of the spoon-shaped stirring blade is formed into a spoon shape by a circular plate through stamping, and can effectively play a role of stirring when the concentration of the stirring liquid is high; the plug-flow impeller is not only an auxiliary stirrer, but also a plug-flow auxiliary stirring impeller, for example, a phi 1400 polyurethane blade adopted by a QDT type submersible flow impeller leaving the factory in Lanjiang is a horn shape, so that plug-flow stirring is realized, during stirring, a thrust force is provided to the center of the tank body, biogas slurry flows from the center of the blade in the tank body and is pushed to the spoon-shaped stirrer to form circulation, and the function of a biogas slurry circulation system is achieved.

Preferably, the helical tooth segments of the first worm wheel and the first worm are arranged in the first direction-changing shell; the spiral tooth sections of the second worm wheel and the second worm are arranged in the second turning shell. The first worm wheel, the first worm, the second worm wheel and the second worm form a two-degree-of-freedom steering transmission structure, when the two-degree-of-freedom steering transmission structure is arranged, the horizontal stirring shaft is always vertical to the first worm, the first worm is also always vertical to the second worm, and the included angle between the horizontal stirring shaft and the second worm can be changed; the utility model discloses an in-service operation in-process horizontal (mixing) shaft remains the unchangeable horizontality in position throughout, but first worm can be the tilt state, and although the second worm keeps the level, its space contained angle with horizontal (mixing) shaft changes always. Consequently draw the conclusion, the utility model discloses in set up purpose-built second grade worm gear transmission, adjustable actuating system's mounted position and installation angle are favorable to reducing the utility model discloses an occupation of land space.

Preferably, the inner wall of the lower tank body is also provided with a temperature sensor, the heating pipe fitting of the annular heating pipe is annular and leans against the inner wall of the lower tank body through a support bar fixing ring, the heating pipe fitting and the temperature sensor form a temperature control device, the temperature control device can be connected with a controller, the biogas slurry temperature can be monitored in real time, and the temperature in the tank can be controlled according to a temperature switch combustor.

Preferably, the outside of sealing ring is equipped with the seal cover, and the package plugs up the gap of sealing ring and horizontal (mixing) shaft, prevents the large tracts of land gas leakage, guarantees the effective pressure in the jar.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a cooperation stirring of plug flow impeller and spoon shape stirring leaf realizes transversely pushing away STREAMING stirring, prevents effectively that the solid from subsiding unfavorable phenomena such as hardening, cementation because of gravity, can guarantee all the time that jar does not basically have the subsides solid piece of large tracts of land in.

2. The utility model discloses in set up purpose-built second grade worm gear transmission, constituted the steering transmission structure of a two degrees of freedom, adjustable actuating system's mounted position and installation angle are favorable to reducing the utility model discloses an occupation of land space.

3. The utility model discloses stir efficiently, compensate the not enough of current axial-flow type or radial-flow type agitator through horizontal plug-flow type stirring, through the second grade worm gear transmission of flexibility freedom, be convenient for the utility model discloses an installation, dismantlement and maintenance reduce to take up an area of the space, are worth using widely.

Drawings

FIG. 1 is a schematic structural view of a stirring-enhanced biogas fermentation tank according to the present invention;

FIG. 2 is a schematic view of a worm gear transmission structure of a stirring-enhanced biogas fermentation tank of the present invention;

fig. 3 is a schematic structural view of a first turning shell and a second turning shell of the stirring-enhanced biogas fermentation tank of the present invention;

in the figure: the fermentation tank comprises a fermentation tank body 1, an upper tank body 101, a lower tank body 102, a sealing ring 2, a horizontal stirring shaft 3, a plug-flow impeller 4, spoon-shaped stirring blades 5, a bearing 6, a bearing seat 7, an upright column 8, a tank bottom annular supporting frame 9, an outer edge support 10, a fixing rib plate 11, a feeding pipe 12, a screw-in connector 13, a flexible hinge 14, a gas storage pool 15, an annular heating pipe 16, a discharging pipe 17, a first worm wheel 18, a first worm 19, a second worm wheel 20, a second worm 21, a gearbox 22, a motor spindle 23, a motor 24, an L movable rod 25, a rotary sieve plate 26, a first turning shell 27, a second turning shell 28 and a temperature sensor 29.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a biogas fermentation tank with enhanced stirring comprises a fermentation tank body 1, wherein the fermentation tank body 1 is formed by assembling an upper tank body 101 and a lower tank body 102, the upper tank body 101 and the lower tank body 102 are two symmetrical semi-ellipsoidal shells, the bottom edge of the upper tank body 101 and the top edge of the lower tank body 102 are fixedly connected with a horizontal elliptical flange respectively, the upper tank body 101 and the lower tank body 102 are fastened together through the elliptical flanges and bolts, and the fermentation tank body 1 forms an eggshell-like sealed shell; the bottom edge of the upper tank body 101 is provided with two symmetrical semicircular grooves, the top edge of the lower tank body 102 is also provided with two symmetrical semicircular grooves, the semicircular grooves form two circular through holes, sealing rings 2 are nested in the circular through holes, horizontal stirring shafts 3 are erected on the two sealing rings 2, the parts of the horizontal stirring shafts 3, which are positioned in the fermentation tank body 1, are provided with plug-flow impellers 4 and spoon-shaped stirring blades 5, the spoon-shaped stirring blades 5 are positioned at the central position of the fermentation tank body 1, and a plurality of groups of plug-flow impellers 4 are symmetrically distributed along the central position of the fermentation tank body 1; two ends of the horizontal stirring shaft 3 extending out of the fermentation tank body 1 are respectively connected with a bearing 6 in a penetrating manner, the bearings 6 are fixedly arranged on the side wall of a bearing seat 7, one side of the bearing seat 7 far away from the bearing seat 7 is fixed on the side wall of an upright post 8, the bottom end of the upright post 8 is fixedly connected to the upper surface of a tank bottom annular support frame 9, the top end of the upright post 8 is fixedly connected to the lower surface of an outer edge support 10, and the outer edge support 10 is fixedly connected to the outer wall of an upper; a feed pipe 12 is arranged in the center of the top surface of the upper tank body 101, threads are arranged in the feed pipe 12, a screw-in connector 13 is sleeved through the threads, the outer contour of the bottom of the screw-in connector 13 is fixedly arranged on the outer wall of the feed pipe 12 through a flexible hinge 14, an air outlet is arranged at the top of the screw-in connector 13, and the screw-in connector is communicated with an air storage pool through an air duct 15; an annular heating pipe 16 is fixedly connected in the lower tank body 102, and a discharge pipe 17 is fixedly connected in the center of the bottom surface of the lower tank body 102; one end of the horizontal stirring shaft 3 is sleeved with a first worm wheel 18, the first worm wheel 18 is meshed with a spiral tooth section on the upper portion of a first worm 19, a smooth section on the lower portion of the first worm 19 is sleeved with a second worm wheel 20, the second worm wheel 20 is meshed with a spiral tooth section of a second worm 21, the smooth section on one end of the second worm 21 is connected to the output end of a gearbox 22, the input end of the gearbox 22 is connected with a motor spindle 23, and the motor spindle 23 is connected with a motor 24.

Referring to fig. 1, an L-shaped movable rod 25 is movably inserted into the side wall of the discharge pipe 17, a straight rod of the L-shaped movable rod 25 equally divides the discharge pipe 17, a part of the L-shaped movable rod 25 inserted into the discharge pipe 17 is embedded in a rotary sieve plate 26 and equally divides the rotary sieve plate 26, and the minimum gap between the rotary sieve plate 26 and the discharge pipe 17 is 3-5 mm. The L-shaped movable rod 25 is used as a handle part for controlling the rotation of the rotary sieve plate 26, the small holes are formed in the rotary sieve plate 26, the plate is vertically arranged in a methane fermentation stirring stage, the stirring cannot be influenced, when methane slag is discharged, the plate is rotated to be horizontally arranged, methane liquid and large-particle methane slag can be separated as required, and solid-liquid separation of fermentation waste is realized.

Referring to fig. 1, the rod part of the spoon-shaped stirring blade 5 is fixedly connected with the horizontal stirring shaft 3 in a cross shape, and two ends of the spoon-shaped stirring blade 5 are provided with reversely symmetrical scoops; the impeller 4 consists of two inverted symmetrical horn-shaped hollow rods. The spoon-shaped stirring blade 5 is a main stirrer of the utility model, which is different from a common stirrer, the outer end of the spoon-shaped stirring blade 5 is formed into a spoon shape by a circular plate through stamping, and the stirring effect can be effectively exerted when the concentration of the stirring liquid is high; the impeller 4 is not only an auxiliary stirrer, but also a plug-flow type auxiliary stirring impeller, for example, the phi 1400 polyurethane blade adopted by the QDT type submersible impeller leaving the factory in Lanjiang is a horn shape, so that plug-flow type stirring is realized, during stirring, the thrust is provided for the center of the tank body, the biogas slurry flows from the center of the blade in the tank body and is pushed to the spoon type stirrer to form circulation, and the function of a biogas slurry circulation system is achieved.

Referring to fig. 1-3, the helical tooth segments of the first worm wheel 18 and the first worm 19 are disposed within a first direction changing housing 27; the helical tooth segments of the second worm wheel 20 and the second worm 21 are disposed within the second direction changing housing 28. The first worm wheel 18, the first worm 19, the second worm wheel 20 and the second worm 21 form a two-degree-of-freedom steering transmission structure, when the two-degree-of-freedom steering transmission structure is arranged, the horizontal stirring shaft 3 is always vertical to the first worm 19, the first worm 19 is also always vertical to the second worm 21, and the included angle between the horizontal stirring shaft 3 and the second worm 21 can be changed; the utility model discloses an in-service operation in-process horizontal (mixing) shaft 3 remains the unchangeable horizontality in position throughout, but first worm 19 can be the tilt state, and second worm 21 though keep the level, its space contained angle with horizontal (mixing) shaft 3 changes always. Consequently draw the conclusion, the utility model discloses in set up purpose-built second grade worm gear transmission, adjustable actuating system's mounted position and installation angle are favorable to reducing the utility model discloses an occupation of land space.

Referring to fig. 1, the inner wall of the lower tank 102 is further provided with a temperature sensor 29, the heating pipe fitting of the annular heating pipe 16 is annular and leans against the inner wall of the lower tank 102 through a support bar fixing ring, and forms a temperature control device with the temperature sensor 29, and the temperature control device can be connected with a controller to monitor the temperature of the biogas slurry in real time, and control the temperature in the tank according to a temperature switch burner.

Referring to fig. 1, the sealing sleeve is arranged on the outer side of the sealing ring 2, and a gap between the sealing ring 2 and the horizontal stirring shaft 3 is blocked by the sealing sleeve, so that large-area air leakage is prevented, and effective pressure in the tank is guaranteed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A stirring-enhanced biogas fermentation tank comprises a fermentation tank body (1), and is characterized in that the fermentation tank body (1) is formed by assembling an upper tank body (101) and a lower tank body (102), the upper tank body (101) and the lower tank body (102) are two symmetrical semi-ellipsoidal shells, the bottom edge of the upper tank body (101) and the top edge of the lower tank body (102) are fixedly connected with horizontal elliptical flanges respectively, the upper tank body (101) and the lower tank body (102) are fastened together through the elliptical flanges and bolts, and the fermentation tank body (1) forms an eggshell-like sealed shell;

the bottom edge of the upper tank body (101) is provided with two symmetrical semicircular grooves, the top edge of the lower tank body (102) is also provided with two symmetrical semicircular grooves, the semicircular grooves form two circular through holes, sealing rings (2) are nested in the circular through holes, horizontal stirring shafts (3) are erected on the two sealing rings (2), the parts of the horizontal stirring shafts (3) located in the fermentation tank body (1) are provided with plug-flow impellers (4) and spoon-shaped stirring blades (5), the spoon-shaped stirring blades (5) are located at the central position of the fermentation tank body (1), and a plurality of groups of plug-flow impellers (4) are symmetrically distributed along the central position of the fermentation tank body (1);

the two ends of the horizontal stirring shaft (3) extending out of the fermentation tank body (1) are respectively connected with bearings (6) in a penetrating manner, the bearings (6) are fixedly installed on the side wall of a bearing seat (7), one side, far away from the bearing seat (7), of the bearing seat (7) is fixed on the side wall of an upright post (8), the bottom end of the upright post (8) is fixedly connected to the upper surface of a tank bottom annular support frame (9), the top end of the upright post (8) is fixedly connected to the lower surface of an outer edge support (10), and the outer edge support (10) is fixedly connected to the outer wall of an upper tank body (101) through a fixing rib plate (11); a feeding pipe (12) is arranged in the center of the top surface of the upper tank body (101), a screw thread is arranged in the feeding pipe (12), a screw-in connector (13) is sleeved through the screw thread, the outer contour of the bottom of the screw-in connector (13) is fixedly arranged on the outer wall of the feeding pipe (12) through a flexible hinge (14), an air outlet is formed in the top of the screw-in connector (13), and the screw-in connector is communicated with an air storage pool (15) through an air guide pipe;

an annular heating pipe (16) is fixedly connected in the lower tank body (102), and a discharge pipe (17) is fixedly connected in the center of the bottom surface of the lower tank body (102);

first worm wheel (18) have been cup jointed to the one end of horizontal mixing shaft (3), first worm wheel (18) meshing is in the spiral tooth section on first worm (19) upper portion, second worm wheel (20) have been cup jointed to the smooth section of first worm (19) lower part, second worm wheel (20) meshing is in the spiral tooth section of second worm (21), the output in gearbox (22) is connected to the smooth section of second worm (21) one end, the input of gearbox (22) is connected with motor spindle (23), motor spindle (23) are connected with motor (24).

2. An enhanced stirring biogas fermentation tank as claimed in claim 1, characterized in that the side wall of the discharging pipe (17) is movably inserted with an L-shaped movable rod (25), a section of straight rod of the L-shaped movable rod (25) divides the discharging pipe (17) evenly, the part of the L-shaped movable rod (25) inserted into the discharging pipe (17) is embedded in the rotary sieve plate (26) and divides the rotary sieve plate (26) evenly, and the minimum clearance between the rotary sieve plate (26) and the discharging pipe (17) is 3-5 mm.

3. The biogas fermentation tank with enhanced stirring of claim 1, wherein the rod part of the spoon-shaped stirring blade (5) is fixedly connected with the horizontal stirring shaft (3) in a cross-shaped manner, and two ends of the spoon-shaped stirring blade (5) are provided with oppositely symmetrical scoops; the impeller (4) consists of two inverted symmetrical horn-shaped hollow rods.

4. An enhanced stirring biogas fermenter according to claim 1, wherein the helical tooth segments of the first worm wheel (18) and the first worm (19) are arranged in a first direction-changing housing (27); the spiral tooth sections of the second worm wheel (20) and the second worm (21) are arranged in a second direction-changing shell (28).

5. The biogas fermentation tank with the enhanced stirring function as claimed in claim 1, wherein the inner wall of the lower tank body (102) is further provided with a temperature sensor (29), the heating pipe fitting of the annular heating pipe (16) is annular and leans against the inner wall of the lower tank body (102) through a support bar fixing ring, and the temperature sensor (29) forms a temperature control device which can be connected with a controller to monitor the temperature of biogas slurry in real time and control the temperature in the tank according to the temperature switch of the burner.

6. An enhanced stirring biogas fermenter according to claim 1, wherein a sealing sleeve is provided outside the sealing ring (2).

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