Beer production fermentation tank

Abstract

The invention relates to the technical field of fermentation tanks, and discloses a beer production fermentation tank which comprises a tank body and a tank cover, the inner wall of the tank cover is fixedly connected with a telescopic pipe, one end of the telescopic pipe is fixedly connected with a buckle plate, the lower surface of the tank cover located in the telescopic pipe is fixedly connected with a limiting assembly, and the upper surface of the tank cover is fixedly connected with a motor. The driving end of the motor is fixedly connected with a wire wheel, and the outer wall of the wire wheel is fixedly connected with a pull rope. The telescopic pipe and the buckle plate are arranged to be used in cooperation, when the tank needs to be soaked, the push rod can be started to drive the angle pin block to move, the angle pin block is pulled out of the inclined hole, then the motor is started to drive the wire wheel to rotate reversely, the reversely-rotated wire wheel pays off, and at the moment, the telescopic pipe moves downwards under the gravity effect of the buckle plate to be pulled open; therefore, when caustic soda is soaked, the space in the tank body is occupied due to blocking of the unfolded telescopic pipe, the inner wall of the tank body can be soaked with a small amount of caustic soda, and waste is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fermentation tanks, in particular to a beer production fermentation tank. Background Art

[0002] The beer production fermentation tank is used to ferment beer. Its inner wall is smooth without dead corners, so that it is easy to clean the fermentation tank after use. When cleaning the fermentation tank, for a small fermentation tank, the tank body is generally filled with caustic soda solution, and the inner wall of the entire fermentation tank is immersed in the caustic soda solution. After waiting for a period of time, the caustic soda is discharged, and then clean water is filled in for rinsing, and then disinfection is performed.

[0003] For a larger fermentation tank, if caustic soda solution is used to soak the fermentation tank, a large amount of caustic soda solution will be needed to fill the fermentation tank, resulting in waste; while adding a certain amount of caustic soda solution into the fermentation tank, and then using a pump to extract the caustic soda solution at the bottom of the tank, and continuously pouring the caustic soda solution on the inner wall of the tank instead of soaking, not only the soaking effect is poor, but also the pump needs to run continuously, wasting energy. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and a beer production fermentation tank is proposed. When cleaning and soaking a larger fermentation tank, only a small amount of caustic soda is needed to soak the fermentation tank, thus avoiding waste.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A beer production fermentation tank comprises a tank body and a tank cover, the inner wall of the tank cover is fixedly connected with a telescopic tube, and one end of the telescopic tube is fixedly connected with a buckle plate, the lower surface of the tank cover located inside the telescopic tube is fixedly connected with a limiting assembly, the upper surface of the tank cover is fixedly connected with a motor, and the driving end of the motor is fixedly connected with a wire wheel, the outer wall of the wire wheel is fixedly connected with a pulley, and one end of the pulley passes through the tank cover and extends to the inside of the telescopic tube, one end of the pulley located inside the telescopic tube is fixedly connected with the buckle plate, an outer cover is arranged on the outside of the motor, and the outer cover is fixedly connected to the tank cover, a clearance groove is provided on the inner wall of the outer cover, and a baffle is provided in the clearance groove, two first air holes connected with the clearance groove are provided on the upper surface of the outer cover, two through holes are provided on the upper surface of the baffle, springs are fixedly connected to both side walls of the baffle, one end of the wire wheel is fixedly connected with a control assembly, and a second air hole is provided on the surface of the tank cover.

[0007] Preferably, a pressure pump is fixedly connected to the outer wall of the outer cover, and an output end of the pressure pump is connected to an air pipe, one end of the air pipe is connected to the outer cover, and a one-way valve is fixedly connected to the inner wall of the air pipe.

[0008] Preferably, the limiting assembly includes a frame fixedly connected to the tank cover, and a pull rope is arranged through the frame, limiting holes are provided on both side walls of the frame, a limiting pin is arranged in the telescopic tube, and the limiting pin is arranged below the limiting hole, the limiting pin is fixedly connected to the buckle plate, and a fixing assembly is fixedly connected to one side wall of the frame.

[0009] Preferably, the fixing assembly comprises a push rod fixedly connected to the frame body, and an oblique pin block is fixedly connected to one end of the push rod, and an oblique hole is formed on the side wall of the limit pin.

[0010] Preferably, the control component includes a rotating shaft fixedly connected to the wire wheel, and a gear is rotatably sleeved on the outer wall of the rotating shaft, an annular cavity is opened on the inner wall of the gear, and two first blocks and second blocks are respectively arranged in the annular cavity, the two first blocks are fixedly connected to the gear, the second block is fixedly connected to the rotating shaft, and a rack is fixedly connected to the lower surface of the block, and the rack is meshed with the gear.

[0011] Preferably, the upper end of the limit pin is chamfered.

[0012] Preferably, an oblique cone annular groove is provided at the lower end of the tank cover, and a cushion is fixedly connected to the inner wall of the oblique cone annular groove, and an oblique angle is provided at one end of the buckle plate.

[0013] Preferably, the telescopic tube is a bellows.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention is used in conjunction with a telescopic tube and a gusset plate, etc., and when in use, the motor can be started to drive the motor to rotate the wire wheel, so that the wire wheel is wound around the pull rope, and then the pull rope pulls the gusset plate to move the gusset plate upward, and the upwardly moved gusset plate compresses the telescopic tube until it is compressed by the telescopic tube into the tank cover, and the tank body can be used for beer fermentation. After the beer is produced, when the tank body needs to be cleaned or soaked, the push rod can be started to drive the push rod to move the inclined pin block, so that the inclined pin block is pulled out of the inclined hole, and then the motor is started to drive the wire wheel to reverse, and the reversed wire wheel releases the wire. At this time, the telescopic tube will move downward under the gravity of the gusset plate to pull open the telescopic tube, so that when soaking caustic soda, the expanded telescopic tube is blocked, occupying the space in the tank body, and only a small amount of caustic soda is needed to soak the inner wall of the tank body, thereby avoiding waste.

[0016] 2. The present invention uses a pressure pump, an air pipe and a one-way valve in combination to drive the pressure pump so that the pressure pump collects air from the outside, allowing the air to enter the telescopic tube to pressurize the telescopic tube, so as to avoid the problem of caustic soda easily flattening the telescopic tube when the caustic soda solution is put into the tank body at a later stage;

[0017] 3. The present invention is used in conjunction with a rotating shaft and a gear, etc. When the spool rotates, the rotating spool drives the rotating shaft to rotate, and the rotating shaft drives the second block to rotate. After the second block rotates to a certain angle, the second block contacts the first block. At this time, the rotating second block drives the gear to rotate, the rotating gear drives the rack to move, and the moving rack drives the baffle to move. After the baffle moves to a certain position, another through hole on the baffle coincides with the first air hole, so that when the telescopic tube is pulled open, the outside air can quickly enter the telescopic tube through the through hole, the first air hole and the second air hole, which is convenient for pulling open the telescopic tube. The through hole and the first air hole can coincide with each other, which can facilitate the use of the device.

[0018] 4. According to the present invention, after the telescopic tube is opened, the motor is stopped. After the motor is stopped, the spring pushes the baffle to reset, the reset baffle drives the rack to move, and the moving rack drives the gear to reverse and reset. When the baffle is reset, the through hole and the first air hole are staggered to seal the air outlet. In this way, when the motor is stopped, the first air hole is automatically sealed. At this time, the pressure pump can be directly started to pressurize the telescopic tube, which is convenient and quick. After the tank body is cleaned, the motor is started to reverse, so that when the wire wheel pulls the buckle plate through the pull rope, when the buckle plate and the telescopic tube are retracted, the through hole and the first air hole can overlap automatically, which is convenient for exhaust when the telescopic tube is retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a beer production fermentation tank proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the front cross-section structure of a beer production fermentation tank proposed by the present invention;

[0021] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0023] Figure 5 for Figure 3 The enlarged structural diagram at C in the middle;

[0024] Figure 6 A schematic diagram of the side cross-section structure of a beer production fermentation tank proposed by the present invention;

[0025] Figure 7 for Figure 6 The enlarged structural diagram at D in the middle;

[0026] Figure 8 This is a schematic cross-sectional structural diagram of the baffle proposed in the present invention.

[0027] In the figure: 1. tank body; 2. tank cover; 3. telescopic tube; 4. buckle plate; 5. motor; 6. reel; 7. pull rope; 8. outer cover; 9. clearance groove; 10. stop bar; 11. first air hole; 12. through hole; 13. spring; 14. second air hole; 15. frame; 16. limit hole; 17. limit pin; 18. push rod; 19. oblique pin block; 20. oblique hole; 21. rotating shaft; 22. gear; 23. annular cavity; 24. first stop block; 25. second stop block; 26. rack; 27. cushion; 28. pressure pump; 29. ​​air pipe; 30. one-way valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 8 A beer production fermentation tank comprises a tank body 1 and a tank cover 2. The inner wall of the tank cover 2 is fixedly connected with a telescopic tube 3, and one end of the telescopic tube 3 is fixedly connected with a gusset plate 4. The lower surface of the tank cover 2 located inside the telescopic tube 3 is fixedly connected with a limiting assembly. The upper surface of the tank cover 2 is fixedly connected with a motor 5, and the driving end of the motor 5 is fixedly connected with a wire wheel 6. The outer wall of the wire wheel 6 is fixedly connected with a pull rope 7, and one end of the pull rope 7 passes through the tank cover 2 and extends to the inside of the telescopic tube 3. The pull rope 7 located inside the telescopic tube 3 is fixedly connected with a limit assembly. One end of the rope 7 is fixedly connected to the buckle plate 4, an outer cover 8 is provided on the outside of the motor 5, and the outer cover 8 is fixedly connected to the tank cover 2, a clearance groove 9 is provided on the inner wall of the outer cover 8, and a baffle 10 is provided in the clearance groove 9, two first air holes 11 connected to the clearance groove 9 are provided on the upper surface of the outer cover 8, two through holes 12 are provided on the upper surface of the baffle 10, springs 13 are fixedly connected to the side walls of the baffle 10, one end of the wire wheel 6 is fixedly connected to the control component, and a second air hole 14 is provided on the surface of the tank cover 2.

[0030] The cam 6 is then pulled back to allow the cylinder 4 to move upward, and the cylinder 4 is then pulled back to allow the cylinder 4 to move upward, so that the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, so that the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, so that the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4 can be easily moved back and forth, and the cylinder 4

[0031] Furthermore, a pressure pump 28 is fixedly connected to the outer wall of the outer cover 8, and an output end of the pressure pump 28 is connected to an air pipe 29, one end of the air pipe 29 is connected to the outer cover 8, and a one-way valve 30 is fixedly connected to the inner wall of the air pipe 29; by setting the pressure pump 28, the air pipe 29 and the one-way valve 30 for use together, the pressure pump 28 is driven to collect external air, so that the air enters the telescopic tube 3, and the telescopic tube 3 is pressurized, so as to avoid the problem of caustic soda easily flattening the telescopic tube 3 when the caustic soda solution is put into the tank body 1 later.

[0032] Furthermore, the limiting assembly includes a frame 15 fixedly connected to the tank cover 2, and the pull rope 7 is arranged through the frame 15, and limiting holes 16 are provided on both side walls of the frame 15, and a limiting pin 17 is arranged in the telescopic tube 3, and the limiting pin 17 is arranged below the limiting hole 16, the limiting pin 17 is fixedly connected to the buckle plate 4, and a fixing assembly is fixedly connected to one side wall of the frame 15; by setting the frame 15, the limiting hole 16 and the limiting pin 17 for use together, after the buckle plate 4 moves to a certain position, the limiting pin 17 on the buckle plate 4 is inserted into the limiting hole 16, thereby limiting the buckle plate 4, so that when the buckle plate 4 continues to move up, the buckle plate 4 can remain stable.

[0033] Furthermore, the fixing assembly includes a push rod 18 fixedly connected to the frame body 15, and one end of the push rod 18 is fixedly connected to an inclined pin block 19, and an inclined hole 20 is opened on the side wall of the limit pin 17; by setting the push rod 18, the inclined pin block 19 and the inclined hole 20 for use in conjunction, after the limit pin 17 on the buckle plate 4 is inserted into the limit hole 16, the push rod 18 is started, so that the push rod 18 pushes the inclined pin block 19 to move, and the moved inclined pin block 19 is inserted into the inclined hole 20 to fix the limit pin 17 and the buckle plate 4.

[0034] Furthermore, the control component includes a rotating shaft 21 fixedly connected to the wire wheel 6, and a gear 22 is rotatably sleeved on the outer wall of the rotating shaft 21, an annular cavity 23 is opened on the inner wall of the gear 22, and two first blocks 24 and second blocks 25 are respectively arranged in the annular cavity 23, the two first blocks 24 are fixedly connected to the gear 22, the second block 25 is fixedly connected to the rotating shaft 21, and a rack 26 is fixedly connected to the lower surface of the baffle 10, and the rack 26 is meshed with the gear 22; by setting the rotating shaft 21 and the gear 22 for use in conjunction, the movement of the baffle 10 can be controlled. When in use, when the wire wheel 6 rotates, the rotating wire wheel 6 drives the rotating shaft 21 to rotate, and the rotating rotating shaft 21 drives the second block 25 to rotate. When the second block 25 rotates to After a certain angle, the second stopper 25 contacts the first stopper 24. At this time, the rotating second stopper 25 drives the gear 22 to rotate, and the rotating gear 22 drives the rack 26 to move, and the moving rack 26 drives the baffle 10 to move. After the baffle 10 moves to a certain position, a through hole 12 on the baffle 10 coincides with the first air hole 11. After a through hole 12 coincides with the first air hole 11, the rack 26 moves to a position disengaged from the gear 22, so that the gear 22 can continue to rotate. After the gear 22 stops rotating, the spring 13 pushes the baffle 10 to reset, and the reset baffle 10 drives the rack 26 to move, and the moving rack 26 drives the gear 22 to reverse and reset. When the baffle 10 is reset, the through hole 12 is staggered with the first air hole 11.

[0035] Furthermore, a chamfer is provided at the upper end of the limiting pin 17 ; by providing the chamfer, the limiting pin 17 is easily inserted into the limiting hole 16 .

[0036] Furthermore, an oblique cone ring groove is provided at the lower end of the tank cover 2, and a cushion 27 is fixedly connected to the inner wall of the oblique cone ring groove, and an oblique angle is provided at one end of the buckle plate 4; by providing the oblique cone ring groove and the cushion 27, after the buckle plate 4 moves to a certain position, the buckle plate 4 can seal one end of the tank cover 2.

[0037] Furthermore, the telescopic tube 3 is a bellows; by providing the telescopic tube 3 composed of the bellows, when the buckle plate 4 moves upward, the buckle plate 4 can press the telescopic tube 3 into the tank cover 2.

[0038] In the present invention, when in use, the motor 5 is started, so that the motor 5 drives the wire wheel 6, the rotating wire wheel 6 is wound around and pulls one end of the pull rope 7, and then the pull rope 7 pulls the pinch plate 4, so that the pinch plate 4 moves up. At the same time, when the wire wheel 6 rotates, the rotating wire wheel 6 drives the rotating shaft 21 to rotate, and the rotating rotating shaft 21 drives the second stopper 25 to rotate. After the second stopper 25 rotates to a certain angle, the second stopper 25 contacts the first stopper 24. At this time, the rotating second stopper 25 drives the gear 22 to rotate, and the rotating gear 22 drives the rack 26 to move. The moving rack 26 drives the stopper 10 to move. After the stopper 10 moves to a certain position, one of the through holes 12 on the stopper 10 coincides with the first air hole 11. At this time, when the pull rope 7 pulls the pinch plate 4 to move up, when the pinch plate 4 compresses the telescopic tube 3, the gas in the telescopic tube 3 can be discharged through the second air hole 14, the through hole 12 and the first air hole 11, so that the pinch plate 4 can compress the telescopic tube 3.

[0039] After the gusset plate 4 moves up to a certain position, the limiting pin 17 on the gusset plate 4 is inserted into the limiting hole 16, thereby limiting the gusset plate 4, so that when the gusset plate 4 continues to move up, the gusset plate 4 can remain stable, thereby ensuring that the bevel angle of one end of the gusset plate 4 can fit the oblique cone ring groove at the lower end of the tank cover 2 to seal the tank cover 2, and then stop the motor 5, start the push rod 18, so that the push rod 18 pushes the oblique pin block 19 to move, and the moving oblique pin block 19 is inserted into the oblique hole 20 to fix the limiting pin 17 and the gusset plate 4;

[0040] After the motor 5 stops, one of the two springs 13 pulls the baffle 10, and the other spring 13 pushes the baffle 10, so that the baffle 10 is reset, and the moving and reset baffle 10 drives the rack 26 to move, and the moving rack 26 drives the gear 22 to reverse and reset, and then the tank body 1 can be used to produce beer;

[0041] After beer production, when the tank body 1 needs to be cleaned or soaked, the push rod 18 can be started to drive the inclined pin block 19 to move, so that the inclined pin block 19 is pulled out of the inclined hole 20, and then the motor 5 is started to drive the wire wheel 6 to reverse, and the reversed wire wheel 6 releases the wire. At this time, the telescopic tube 3 will move downward under the gravity of the pinch plate 4 to pull the telescopic tube 3 apart;

[0042] When the wire wheel 6 is reversed, the rotating wire wheel 6 drives the rotating shaft 21 to rotate, and the rotating rotating shaft 21 drives the second stopper 25 to rotate. After the second stopper 25 rotates to a certain angle, the second stopper 25 contacts the first stopper 24. At this time, the rotating second stopper 25 drives the gear 22 to rotate, and the rotating gear 22 drives the rack 26 to move. The moving rack 26 drives the baffle 10 to move. After the baffle 10 moves to a certain position, another through hole 12 on the baffle 10 coincides with the first air hole 11, so that when the telescopic tube 3 is pulled open, the outside air can quickly enter the telescopic tube 3 through the through hole 12, the first air hole 11 and the second air hole 14, so that the telescopic tube 3 is easily pulled open.

[0043] After the telescopic tube 3 is pulled open, the motor 5 is stopped. After the motor 5 is stopped, the spring 13 pushes the baffle 10 to reset, and the reset baffle 10 drives the rack 26 to move, and the moving rack 26 drives the gear 22 to reverse and reset. When the baffle 10 is reset, the through hole 12 is staggered with the first air hole 11, and then the pressure pump 28 can be started to collect external air, so that the air enters the telescopic tube 3 and pressurizes the telescopic tube 3. When the caustic soda solution is put into the tank body 1 at a later time, the problem of caustic soda easily flattening the telescopic tube 3 can be avoided. In this way, when soaking the caustic soda, there is the obstruction of the unfolded telescopic tube 3, and only a small amount of caustic soda is needed to soak the inner wall of the tank body 1, thereby avoiding waste.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A beer production fermentation tank, comprising a tank body (1) and a tank cover (2), characterized in that: The inner wall of the tank cover (2) is fixedly connected to a telescopic tube (3), and one end of the telescopic tube (3) is fixedly connected to a buckle plate (4); the lower surface of the tank cover (2) located inside the telescopic tube (3) is fixedly connected to a limiting assembly; the upper surface of the tank cover (2) is fixedly connected to a motor (5), and the driving end of the motor (5) is fixedly connected to a wire wheel (6); the outer wall of the wire wheel (6) is fixedly connected to a pull rope (7), and one end of the pull rope (7) passes through the tank cover (2) and extends to the inside of the telescopic tube (3); one end of the pull rope (7) located inside the telescopic tube (3) is fixedly connected to the buckle plate (4) The motor (5) is fixedly connected with the tank cover (2), an outer cover (8) is arranged outside the motor (5), and the outer cover (8) is fixedly connected with the tank cover (2), a clearance groove (9) is provided on the inner wall of the outer cover (8), and a retaining bar (10) is arranged in the clearance groove (9), two first air holes (11) connected with the clearance groove (9) are provided on the upper surface of the outer cover (8), two through holes (12) are provided on the upper surface of the retaining bar (10), springs (13) are fixedly connected to the side walls of both sides of the retaining bar (10), one end of the wire wheel (6) is fixedly connected with the control component, and a second air hole (14) is provided on the surface of the tank cover (2).

2. A beer production fermentation tank according to claim 1, characterized in that: The outer wall of the outer cover (8) is fixedly connected to a pressure pump (28), and the output end of the pressure pump (28) is connected to an air pipe (29), one end of the air pipe (29) is connected to the outer cover (8), and the inner wall of the air pipe (29) is fixedly connected to a one-way valve (30).

3. A beer production fermentation tank according to claim 1 or 2, characterized in that: The limiting assembly comprises a frame (15) fixedly connected to the tank cover (2), and a pull rope (7) is arranged to pass through the frame (15), both side walls of the frame (15) are provided with limiting holes (16), a limiting pin (17) is arranged in the telescopic tube (3), and the limiting pin (17) is arranged below the limiting hole (16), the limiting pin (17) is fixedly connected to the buckle plate (4), and one side wall of the frame (15) is fixedly connected to a fixing assembly.

4. A beer production fermentation tank according to claim 3, characterized in that: The fixing assembly comprises a push rod (18) fixedly connected to the frame (15), one end of the push rod (18) is fixedly connected to an inclined pin block (19), and a side wall of the limit pin (17) is provided with an inclined hole (20).

5. A beer production fermentation tank according to claim 1, 2 or 4, characterized in that: The control assembly comprises a rotating shaft (21) fixedly connected to the wire wheel (6), and a gear (22) is rotatably sleeved on the outer wall of the rotating shaft (21), an annular cavity (23) is provided on the inner wall of the gear (22), and two first blocks (24) and a second block (25) are respectively arranged in the annular cavity (23), the two first blocks (24) are fixedly connected to the gear (22), the second block (25) is fixedly connected to the rotating shaft (21), and a rack (26) is fixedly connected to the lower surface of the block bar (10), and the rack (26) is meshed with the gear (22).

6. A beer production fermentation tank according to claim 3, characterized in that: The upper end of the limiting pin (17) is provided with a chamfer.

7. A beer production fermentation tank according to claim 1, 2, 4 or 6, characterized in that: The lower end of the tank cover (2) is provided with an oblique cone annular groove, and a soft pad (27) is fixedly connected to the inner wall of the oblique cone annular groove. One end of the buckle plate (4) is provided with an oblique angle.

8. A beer production fermentation tank according to claim 1, 2, 4 or 6, characterized in that: The telescopic tube (3) is a corrugated tube.

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