Fermentation tank for brewing beer

Abstract

The invention belongs to the technical field of fermentation tanks, and particularly relates to a beer brewing fermentation tank which comprises a tank body used for loading materials for beer fermentation. The observation window is fixed on the side wall of the tank body; the first cleaning assembly is arranged on the tank body, water drops condensed on the outer wall of the observation window are cleaned through the first cleaning assembly, the first cleaning assembly comprises a vertical rod and an elastic bag, the vertical rod is installed in the middle of the top of the tank body in a sealed and sliding mode, a floating plate is fixed to the bottom end of the vertical rod, and an L-shaped hard pipe is fixed to the top of the vertical rod; a spray head is fixed at the bottom end of the hard pipe; the supporting frame is fixedly installed at the top of the tank body, the hard pipe penetrates through a through hole formed in the supporting frame in a sliding mode, and the elastic bag is fixed to the middle of the supporting frame; by arranging the cleaning assembly I, an operator can be helped to clean water drops condensed on the outer wall of the observation window, so that the observation window is kept in a clear state, and the operator can observe conveniently.

Description

Technical Field

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

[0002] Fermentation is an important part of the beer brewing process, which directly affects the flavor, alcohol content, taste and other qualities of beer. The fermentation tank for beer brewing is a key equipment used in the beer fermentation process. It is usually a sealed container for yeast to convert sugar into alcohol and carbon dioxide. Since the main body of the fermentation tank is usually a stainless steel plate, it is impossible to observe the fermentation process inside, so a glass window is usually opened on the top to observe the internal fermentation situation.

[0003] Patent application CN118956559A discloses a microbial bacterial liquid fermentation reaction tank, and the key points of its technical solution are: it includes a tank body and an aeration pipe, the aeration pipe is installed at the bottom of the tank body, the aeration pipe is externally connected to an air supply device, and the aeration pipe is designed to open in the inner cavity of the tank body; an observation window made of transparent material is embedded on the tank body; and it also includes an adjustment component, which is installed inside the tank body and is used to adjust the aeration position.

[0004] However, the above technology often has the following defects: the existing fermentation tank is provided with an observation window, so that the internal situation of the tank can be observed during the fermentation process. However, during the fermentation process, there is usually a certain temperature difference between the internal temperature of the tank and the room temperature. When the water vapor in the air is cooled, it will condense into water droplets, forming condensation, which will affect the clarity of the observation window and the efficiency of observing the inside of the tank through the observation window. To this end, the present invention provides a fermentation tank for beer brewing. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a fermentation tank for beer brewing according to the present invention comprises:

[0007] A tank body, wherein the tank body is used to load materials for beer fermentation;

[0008] An observation window, wherein the observation window is fixed on the side wall of the tank body;

[0009] A cleaning component 1, wherein the cleaning component 1 is arranged on the tank body, and the water droplets condensed on the outer wall of the observation window are cleaned by the cleaning component 1. The cleaning component 1 comprises a vertical rod and an elastic bag, wherein the vertical rod is sealingly and slidably installed in the middle of the top of the tank body, a floating plate is fixed to the bottom end of the vertical rod, an L-shaped hard pipe is fixed to the top of the vertical rod, a nozzle is fixed to the bottom end of the hard pipe, and the nozzle is inclined toward the observation window, the elastic bag is arranged on the top of the tank body, and a hose connected with the hard pipe is fixed on the elastic bag;

[0010] The support frame is fixedly mounted on the top of the tank body, the hard tube slides through a through hole provided on the support frame, and the elastic bag is fixed in the middle of the support frame.

[0011] Preferably, it also includes a cleaning component 2, which includes a fixing frame, a pair of the fixing frames are provided and symmetrically fixed on both sides of the observation window, mounting plates are slidably installed on the fixing frames on both sides, a cross plate is fixed between the tops of the mounting plates on both sides, a connecting block is fixed on the top of the cross plate, a top rod is provided on the top of the connecting block, a mounting column is installed between the mounting plates on both sides, a sponge is sleeved on the mounting column, and the sponge is in contact with the observation window.

[0012] Preferably, a slider is fixed on the side wall of the mounting plate, and the slider is slidably arranged in the middle through groove of the fixing frame. The middle of the mounting column is hollow, and support rods are slidably installed at both ends of the mounting column, and a spring three for driving the support rod to reset is fixed inside the mounting column. A connecting column is fixed at the end of the support rod away from the mounting column, and the connecting column is inserted into the mounting hole set in the middle of the slider, a sleeve is fixed in the middle of the sponge, and the sleeve is sleeved on the mounting column, a limiting strip is fixed on the outer wall of the mounting column, and a groove that is mutually engaged with the limiting strip is opened on the inner wall of the sleeve.

[0013] Preferably, the middle of the mounting plate is hollow, the connecting column extends through and into the inner cavity of the mounting plate, a gear is fixed to the end of the connecting column, a pressure rod is vertically arranged in the inner cavity of the mounting plate, a spring for resetting the pressure rod is fixed to the bottom of the inner cavity of the mounting plate, the top of the pressure rod extends through and into the outer side of the top of the mounting plate, a plurality of baffles are provided on the side wall of the pressure rod, the baffles are rotatably mounted on the pressure rod by torsion springs, and a plurality of the baffles can be engaged with the gears.

[0014] Preferably, the connecting block and the cross plate are both hollow in the middle, the inner cavities of the connecting block, the cross plate and the mounting plate are connected to each other, the push rod is slidably installed in the sliding hole at the top of the connecting block, a piston block is sealingly and slidably installed in the inner cavity of the connecting block, a spring for resetting the piston block is installed in the inner cavity of the connecting block, the push rod can pass through the bottom opening of the support frame and contact with the elastic bag, a through air channel is provided in the middle of the gear, the connecting column and the support rod, the mounting plate and the inner cavity of the mounting column are connected through the air channel, and air holes are provided at corresponding positions of the mounting column and the sleeve.

[0015] Preferably, rectangular holes are respectively formed at both ends of the mounting column, and the support rod is adapted to fit the rectangular holes.

[0016] Preferably, a retaining ring is fixed on the connecting column at a position adjacent to the supporting rod, and a buckle groove is provided in the middle of the retaining ring.

[0017] Preferably, the nozzle is located above the floating plate, and its vertical height is greater than the surface height of the floating plate.

[0018] Preferably, a first magnetic block is provided in the inner wall of the middle hole of the slider, and a second magnetic block is provided inside the connecting column, and the first magnetic block and the second magnetic block attract each other.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The beer brewing fermentation tank described in the present invention has an observation window so that an operator can directly observe the changes in the color, foam, etc. of the fermented liquid, which is convenient for the operator to monitor the fermentation process; a cleaning component 1 can help the operator clean the condensed water droplets on the outer wall of the observation window. The operator can squeeze the elastic bag, and the gas in the elastic bag enters the hard pipe through the hose and then sprays out from the nozzle. The sprayed gas blows obliquely downward on the observation window, thereby blowing the water droplets attached to the outer wall of the observation window to flow downward, so as to quickly clean the water droplets on the outer wall of the observation window, so that the observation window remains clear and convenient for the operator to observe.

[0021] 2. The beer brewing fermentation tank described in the present invention can further clean the outer wall of the observation window by setting a cleaning component 2. When in use, the mounting plate is pushed upward, and the mounting plate can drive the middle sponge to move, and the sponge can be used to wipe the water droplets condensed on the outer wall of the observation window. In addition, it can also be used to wipe the dust on its surface to keep the outer wall of the observation window clean; the push rod can pass through the bottom opening of the support frame and contact with the bottom of the elastic bag, so that by driving the cleaning component 2 to move upward, the elastic bag can be squeezed, thereby synchronously driving the cleaning component to start working, so that the cleaning effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a cleaning component 1 of the present invention;

[0025] Figure 3 is a partial cross-sectional view of the present invention;

[0026] Figure 4 yes Figure 3A schematic diagram of the structure enlargement in the middle;

[0027] Figure 5 yes Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0028] Figure 6 yes Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0029] Figure 7 yes Figure 4 A magnified schematic diagram of the structure at D in the middle;

[0030] Figure 8 It is a schematic diagram of the installation position of magnetic block 1 and magnetic block 2 of the present invention.

[0031] In the figure: 1. tank body; 2. vertical rod; 3. hard pipe; 4. hose; 5. support frame; 6. elastic bag; 7. observation window; 8. fixing frame; 9. mounting plate; 10. sponge; 11. nozzle; 12. floating plate; 13. support rod; 14. air duct; 15. retaining ring; 16. connecting column; 17. gear; 18. pressure rod; 19. slider; 20. baffle; 21. cross plate; 22. connecting block; 23. push rod; 24. piston block; 25. spring one; 26. spring two; 27. mounting column; 28. sleeve; 29. ​​limit strip; 30. spring three; 31. air hole; 32. magnetic block one; 33. magnetic block two. DETAILED DESCRIPTION

[0032] 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 explained below in conjunction with specific implementation methods.

[0033] Embodiment 1: Figures 1 to 7 As shown, a beer brewing fermentation tank according to an embodiment of the present invention comprises:

[0034] A tank body 1, wherein the tank body 1 is used to load materials for beer fermentation;

[0035] An observation window 7, wherein the observation window 7 is fixed on the side wall of the tank body 1;

[0036] A cleaning component 1, which is arranged on the tank body 1, and is used to clean the water droplets condensed on the outer wall of the observation window 7. The cleaning component 1 includes a vertical rod 2 and an elastic bag 6. The vertical rod 2 is sealingly and slidably installed in the middle of the top of the tank body 1. A floating plate 12 is fixed to the bottom end of the vertical rod 2. An L-shaped hard pipe 3 is fixed to the top of the vertical rod 2. A nozzle 11 is fixed to the bottom end of the hard pipe 3. The nozzle 11 is inclined toward the observation window 7. The elastic bag 6 is arranged on the top of the tank body 1. A hose 4 connected to the hard pipe 3 is fixed on the elastic bag 6;

[0037] A support frame 5, wherein the support frame 5 is fixedly mounted on the top of the tank body 1, the hard tube 3 slides through a through hole provided on the support frame 5, and the elastic bag 6 is fixed in the middle of the support frame 5;

[0038] During operation, the material used to brew beer is transported to the interior of the tank body 1 through the bottom connecting pipe for fermentation. At the same time, a heating device (not shown in the figure) is used to heat the tank body 1 to keep the yeast in the tank body 1 highly active, which is beneficial to improving the fermentation efficiency. The observation window 7 is provided so that the operator can directly observe the changes in the color and foam of the fermented liquid, which is convenient for the operator to monitor the fermentation process. During the fermentation process, the temperature of the fermentation liquid is usually high, while the external environment temperature is low. When the temperature of the fermentation liquid is high, when the outer wall of the tank body 1 contacts the surrounding air, the water vapor in the air will condense into water droplets when it is cooled, forming condensation, which may The clarity of the observation window 7 is affected, and it is not convenient for the operator to observe the fermentation liquid through the observation window 7. It is necessary to use a separate tool to wipe the observation window 7, which is inconvenient to use; at this time, the cleaning component 1 can help the operator clean the condensed water droplets on the outer wall of the observation window 7. The operator can squeeze the elastic bag 6, and the gas in the elastic bag 6 enters the hard pipe 3 through the hose 4, and then sprays out from the nozzle 11. The sprayed gas blows obliquely downward on the observation window 7, thereby blowing the water droplets attached to the outer wall of the observation window 7 to flow downward, so as to quickly clean the water droplets on the outer wall of the observation window 7, so that the observation window 7 remains clear, which is convenient for the operator to observe;

[0039] In addition, the hard tube 3 is supported by the support frame 5, so that the nozzle 11 remains obliquely downward toward the observation window 7, and floats on the surface of the fermentation liquid through the float plate 12, so that the hard tube 3 and the nozzle 11 are supported by the vertical rod 2. The float plate 12 can synchronously adjust the height of the nozzle 11 according to the height of the liquid level to meet more usage requirements.

[0040] It also includes a cleaning component 2, which includes a fixing frame 8, which is provided with a pair of and symmetrically fixed on both sides of the observation window 7, and mounting plates 9 are slidably installed on the fixing frames 8 on both sides, and a cross plate 21 is fixed between the tops of the mounting plates 9 on both sides, and a connecting block 22 is fixed on the top of the cross plate 21. A top rod 23 is provided on the top of the connecting block 22, and a mounting column 27 is installed between the mounting plates 9 on both sides, and a sponge 10 is sleeved on the mounting column 27, and the sponge 10 is in contact with the observation window 7; when working, by pushing the mounting plate 9 upward, the mounting plate 9 can drive the middle sponge 10 to move, and the sponge 10 can wipe the water droplets condensed on the outer wall of the observation window 7. In addition, it can also be used to wipe the dust on its surface, so that the outer wall of the observation window 7 is kept clean; the top rod 23 can pass through the bottom opening of the support frame 5 and contact with the bottom of the elastic bag 6, so that by driving the cleaning component 2 to move upward, the elastic bag 6 can be squeezed, thereby synchronously driving the cleaning component to start working, so that the cleaning effect is better.

[0041] A slider 19 is fixed on the side wall of the mounting plate 9, and the slider 19 is slidably arranged in the middle through groove of the fixing frame 8. The middle of the mounting column 27 is hollow, and support rods 13 are slidably installed at both ends of the mounting column 27. A spring 30 for driving the support rod 13 to return is fixed inside the mounting column 27. A connecting column 16 is fixed at one end of the support rod 13 away from the mounting column 27, and the connecting column 16 is inserted into the mounting hole set in the middle of the slider 19. A sleeve 28 is fixed in the middle of the sponge 10, and the sleeve 28 is sleeved on the mounting column 27. The outer wall of the mounting column 27 is fixed with a limit strip 29, and the inner wall of the sleeve 28 is provided with a groove that is mutually engaged with the limit strip 29; when working, by toggling the support rod 13, the support rod moves toward the inner cavity of the mounting column 27, so that the connecting column 16 at the end of the support rod 13 can be withdrawn from the mounting hole of the slider 19, so that the mounting column 27 can be removed from the slider 19, and then the sponge 10 can be removed from the mounting column 27, and the sponge 10 can be quickly replaced to keep the sponge 10 with a good cleaning effect, which is simple to operate and improves the disassembly and assembly efficiency.

[0042] The middle of the mounting plate 9 is set to be hollow, the connecting column 16 extends through and into the inner cavity of the mounting plate 9, a gear 17 is fixed to the end of the connecting column 16, a pressure rod 18 is vertically arranged in the inner cavity of the mounting plate 9, a spring 26 for resetting the pressure rod 18 is fixed to the bottom of the inner cavity of the mounting plate 9, the top of the pressure rod 18 extends through and out to the outer side of the top of the mounting plate 9, a plurality of baffles 20 are arranged on the side wall of the pressure rod 18, the baffles 20 are rotatably mounted on the pressure rod 18 by torsion springs, and a plurality of the baffles 20 can When the mounting plate 9 drives the mounting column 27 and the sponge 10 to move upward through the slider 19, the pressure rod 18 moves synchronously with the mounting plate 9. When the top of the pressure rod 18 contacts the bottom of the support frame 5, the pressure rod 18 slides relatively toward the inside of the mounting plate 9, and the bottom spring 26 is compressed, thereby driving the baffle 20 to move downward. At this time, the baffle 20 is engaged with the teeth of the gear 17 through the torsion spring, which can push the gear 17 to rotate, and then drive the connecting column 16 and the support frame 5 through the gear 17. The support rod 13 and the mounting column 27 rotate, thereby driving the sponge 10 to rotate. By setting the baffle 20 and the number of teeth, the sponge 10 is controlled to rotate 180 degrees. When the mounting plate 9 moves downward, the spring 26 rebounds and pushes the pressure rod 18 to move upward. At this time, the inclined surface of the baffle 20 contacts the teeth and can completely pass through the teeth, and the gear 17 will not be driven to rotate, so that the sponge 10 remains stationary after rotating, so as to realize the flipping of the sponge 10, and then change the contact surface of the sponge 10 and the observation window 7, so as to avoid the end with stains after wiping always contacting the observation window 7, so as to achieve better cleaning effect; in addition, the end of the sponge 10 with stains will face the nozzle 11 after flipping, and when the sponge 10 moves upward, part of the gas ejected from the nozzle 11 can be blown on the sponge 10, so as to accelerate the volatilization of water in the sponge 10, and avoid the sponge 10 from being moldy or damaged due to long-term water accumulation, which affects the cleaning effect of the sponge 10; and the ejected gas can clean the dust attached to the sponge 10, so that the sponge 10 is kept clean.

[0043] The middle of the connecting block 22 and the cross plate 21 are both set to be hollow, and the inner cavities of the connecting block 22, the cross plate 21 and the mounting plate 9 are connected to each other. The push rod 23 is slidably installed in the sliding hole at the top of the connecting block 22, and a piston block 24 is sealed and slidably installed in the inner cavity of the connecting block 22. A spring 25 is installed in the inner cavity of the connecting block 22 to reset the piston block 24. The push rod 23 can pass through the bottom opening of the support frame 5 and contact with the elastic bag 6. A through air channel 14 is provided between the gear 17, the connecting column 16 and the support rod 13, and the mounting plate 9 and the inner cavity of the mounting column 27 are connected through the air channel 14. The mounting column 27 and the sleeve 28 are provided with air holes 31 at corresponding positions; when working, when the cross plate 21 and the connecting block 22 are pushed by the mounting plate 9, When the push rod 23 moves upward, the push rod 23 contacts the elastic bag 6, forcing the push rod 23 to move toward the inner cavity of the connecting block 22, and the piston block 24 is squeezed downward by the push rod 23, thereby compressing the air below the inner cavity of the connecting block 22, so that the air passes through the inner cavity of the cross plate 21 and the mounting plate 9, and then enters the inner cavity of the mounting column 27 through the air duct 14, and finally blows out from the inside of the sponge 10 through the air hole 31. The gas blown out of the air hole 31 further accelerates the volatilization of water in the sponge 10, thereby preventing the sponge 10 from being moldy or damaged due to long-term water accumulation in the sponge 10, affecting the cleaning effect of the sponge 10; and the ejected gas can clean the dust attached to the sponge 10. Through multiple cleanings, the sponge 10 is kept clean and the service life of the sponge 10 is extended.

[0044] Rectangular holes are respectively formed at both ends of the mounting column 27, and the support rod 13 is adapted to the rectangular holes; during operation, the support rod 13 can be limited so that the support rod 13 can reciprocate along the rectangular hole and can also drive the mounting column 27 and the sponge 10 to rotate.

[0045] A retaining ring 15 is fixed on the connecting column 16 at a position adjacent to the support rod 13, and a buckle groove is provided in the middle of the retaining ring 15; when working, the retaining ring 15 is provided to limit the depth of the connecting column 16 inserted into the middle mounting hole of the sliding hole, so as to determine the installation position of the sponge 10, so that the sponge 10 faces the observation window 7; in addition, the buckle groove is provided to pull the connecting column 16 to move outward, and the support rod 13 can be driven to move toward the inner cavity of the mounting column 27 simultaneously, so that the sponge 10 can be disassembled, assembled and replaced.

[0046] The nozzle 11 is located above the float 12, and its vertical height is greater than the surface height of the float 12; when working, the bottom outlet of the nozzle 11 is slightly higher than the surface height of the float 12, and the float 12 floats on the surface of the fermentation liquid, synchronously driving the nozzle 11 to always face the intersection of the observation window 7 and the liquid surface, thereby facilitating the cleaning of the intersection of the observation window 7 with the liquid surface, so as to observe the color of the fermentation liquid and the thickness, density and other characteristics of the liquid surface foam.

[0047] Embodiment 2: Figure 8As shown, compared with Example 1, another implementation of the present invention is: a magnetic block 132 is provided in the inner wall of the middle hole of the slider 19, and a magnetic block 233 is provided inside the connecting column 16, and the magnetic block 132 and the magnetic block 233 attract each other; when working, when the top of the pressure rod 18 has not yet contacted the bottom of the support frame 5, the magnetic block 132 and the magnetic block 233 cooperate to limit the connecting column 16 and restrict the rotation of the connecting column 16, so that the sponge 10 will not rotate easily when it contacts the observation window 7, so as to wipe the observation window 7.

[0048] Working principle: by setting the observation window 7, the operator can directly observe the changes in the color, foam and other aspects of the fermentation liquid, which is convenient for the operator to monitor the fermentation process; the operator can squeeze the elastic capsule 6, and the gas in the elastic capsule 6 enters the hard tube 3 through the hose 4, and then is sprayed out from the nozzle 11, and the sprayed gas blows obliquely downward on the observation window 7, thereby blowing the water droplets attached to the outer wall of the observation window 7 to flow downward, so as to quickly clean the water droplets on the outer wall of the observation window 7, so that the observation window 7 remains clear, which is convenient for the operator to observe; in addition, by pushing the mounting plate 9 upward, the mounting plate 9 can drive the middle sponge 10 to move, and the sponge 10 can be used to wipe the condensed water droplets on the outer wall of the observation window 7. In addition, it can also be used to wipe the dust on its surface, so that the outer wall of the observation window 7 remains clean; the top rod 23 can pass through the bottom opening of the support frame 5 and contact with the bottom of the elastic capsule 6, so that by driving the cleaning component 2 to move upward, the elastic capsule 6 can be squeezed, thereby synchronously driving the cleaning component to start working, so that the cleaning effect is better.

[0049] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fermentation tank for beer brewing, characterized in that: include: A tank body (1), wherein the tank body (1) is used to load materials for beer fermentation; An observation window (7), wherein the observation window (7) is fixed on the side wall of the tank body (1); A cleaning component 1, the cleaning component 1 being arranged on the tank body (1), and the water droplets condensed on the outer wall of the observation window (7) being cleaned by the cleaning component 1, the cleaning component 1 comprising a vertical rod (2) and an elastic bag (6), the vertical rod (2) being sealingly slidably mounted in the middle of the top of the tank body (1), a floating plate (12) being fixed at the bottom end of the vertical rod (2), an L-shaped hard pipe (3) being fixed at the top of the vertical rod (2), a nozzle (11) being fixed at the bottom end of the hard pipe (3), the nozzle (11) being inclined toward the observation window (7), the elastic bag (6) being arranged on the top of the tank body (1), and a hose (4) being connected to the hard pipe (3) being fixed on the elastic bag (6); A support frame (5) is fixedly mounted on the top of the tank body (1); the hard tube (3) slides through a through hole provided on the support frame (5); and the elastic bag (6) is fixed in the middle of the support frame (5).

2. A beer brewing fermentation tank according to claim 1, characterized in that: It also comprises a cleaning component 2, the cleaning component 2 comprises a fixing frame (8), the fixing frame (8) is provided with a pair and is symmetrically fixed on both sides of the observation window (7), mounting plates (9) are slidably mounted on the fixing frames (8) on both sides, a transverse plate (21) is fixed between the tops of the mounting plates (9) on both sides, a connecting block (22) is fixed on the top of the transverse plate (21), a top rod (23) is provided on the top of the connecting block (22), a mounting column (27) is installed between the mounting plates (9) on both sides, a sponge (10) is sleeved on the mounting column (27), and the sponge (10) is in contact with the observation window (7).

3. A beer brewing fermentation tank according to claim 2, characterized in that: A slider (19) is fixed on the side wall of the mounting plate (9), and the slider (19) is slidably arranged in the middle through groove of the fixing frame (8). The middle of the mounting column (27) is hollow, and support rods (13) are slidably arranged at both ends of the mounting column (27). A spring (30) for driving the support rod (13) to return is fixed inside the mounting column (27). A connecting column (16) is fixed at one end of the support rod (13) away from the mounting column (27), and the connecting column (16) is inserted into the mounting hole arranged in the middle of the slider (19). A sleeve (28) is fixed in the middle of the sponge (10), and the sleeve (28) is sleeved on the mounting column (27). A limit strip (29) is fixed on the outer wall of the mounting column (27), and a groove for mutually engaging with the limit strip (29) is provided on the inner wall of the sleeve (28).

4. A beer brewing fermentation tank according to claim 3, characterized in that: The middle of the mounting plate (9) is designed to be hollow, the connecting column (16) extends through the inner cavity of the mounting plate (9), a gear (17) is fixed to the end of the connecting column (16), a pressure rod (18) is vertically arranged in the inner cavity of the mounting plate (9), a spring (26) for resetting the pressure rod (18) is fixed to the bottom of the inner cavity of the mounting plate (9), the top of the pressure rod (18) extends through the outer side of the top of the mounting plate (9), a plurality of baffles (20) are provided on the side wall of the pressure rod (18), the baffles (20) are rotatably mounted on the pressure rod (18) by means of a torsion spring, and a plurality of the baffles (20) can be mutually engaged with the gear (17).

5. A beer brewing fermentation tank according to claim 4, characterized in that: The middle of the connecting block (22) and the transverse plate (21) are both hollow, and the inner cavities of the connecting block (22), the transverse plate (21) and the mounting plate (9) are interconnected. The push rod (23) is slidably mounted in the top sliding hole of the connecting block (22). A piston block (24) is sealed and slidably mounted in the inner cavity of the connecting block (22). A spring (25) for resetting the piston block (24) is mounted in the inner cavity of the connecting block (22). The push rod (23) can pass through the bottom opening of the support frame (5) and contact the elastic bag (6). A through air passage (14) is arranged between the gear (17), the connecting column (16) and the supporting rod (13), and the mounting plate (9) and the inner cavity of the mounting column (27) are connected through the air passage (14). Air holes (31) are arranged at corresponding positions of the mounting column (27) and the sleeve (28).

6. A beer brewing fermentation tank according to claim 5, characterized in that: Rectangular holes are respectively formed at both ends of the mounting column (27), and the support rod (13) is adapted to fit the rectangular holes.

7. A beer brewing fermentation tank according to claim 6, characterized in that: A retaining ring (15) is fixed on the connecting column (16) at a position adjacent to the supporting rod (13), and a buckling groove is provided in the middle of the retaining ring (15).

8. A beer brewing fermentation tank according to claim 7, characterized in that: The spray head (11) is located above the floating plate (12), and its vertical height is greater than the surface height of the floating plate (12).

9. A beer brewing fermentation tank according to claim 8, characterized in that: A magnetic block 1 (32) is arranged in the inner wall of the middle hole of the slider (19), and a magnetic block 2 (33) is arranged inside the connecting column (16), and the magnetic block 1 (32) and the magnetic block 2 (33) attract each other.

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