Beer wort filtering system

Abstract

The invention discloses a beer wort filtering system which comprises a tank body, a main shaft erected in the tank body and a motor arranged on the tank body and used for driving the main shaft to rotate, a tilling cutter arm connected with the main shaft and a tilling cutter arranged below the tilling cutter arm are arranged in the tank body, the upper end of the tilling cutter is fixed to the tilling cutter arm, and the lower end of the tilling cutter is fixed to the tank body. A scraper blade and a lifting mechanism for driving the scraper blade to lift are arranged in the tank body, the lifting mechanism comprises a connecting rod, a steel rope and a tractor, the tractor is fixed on the tank body, the upper end of the connecting rod is in sliding fit with the tillage blade arm, the lower end of the connecting rod is fixedly connected with the scraper blade, and the lower end of the steel rope is fixed with the scraper blade or the bottom of the connecting rod; and the other end of the steel rope is connected with a tractor through the tillage blade arm and a channel in the main shaft. According to the beer wort filtering system provided by the invention, the exposed area is greatly reduced on the basis of realizing the lifting adjustment of the scraper, so that the cleaning effect of an existing cleaning system in a cleaning link is good.

Description

Technical Field

[0001] The invention relates to the technical field of beer production equipment, in particular to a beer wort filtering system. Background Art

[0002] The filtration of beer wort is an important step in the beer production process. After the saccharified mash is sent to the filter tank, the lees are precipitated to form a filter layer. During this process, the tiller needs to be turned on to rotate and stir. The filter layer is loosened by the tiller to increase the filtration speed. After the wort is filtered and the lees are washed, the scraper is used to discharge the drained lees. Finally, the online cleaning system (also known as the CIP system) is used to complete the cleaning of the filter tank.

[0003] In the above process, the scraper needs to be lifted and away from the filter layer during the stirring process of the tiller to avoid damaging the filter layer, and during the discharging process, the scraper needs to move down to the screen near the bottom of the tank to complete the discharge of the lees. Therefore, an additional scraper lifting mechanism is required in the existing filter tank to drive the scraper. For example, a discharging scraper device with the publication number of CN109536317A enables the scraper to be lifted and lowered through a number of rocker arms and connecting rods. However, in this scheme, the rocker arms, guide rods and other components involved in the lifting of the scraper are all arranged in the filter tank. Therefore, in the final step of cleaning the filter tank, the existing cleaning system cannot clean all the parts well, resulting in poor cleaning effect. In the field of food processing, especially the processing of beer wort, the residual lees left after the discharging of the lees are not thoroughly cleaned, which will directly affect the subsequent fermentation effect of the beer wort. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent: to provide a beer wort filtration system, which can greatly reduce the exposed area on the basis of realizing the scraper lifting and lowering adjustment, so that the existing cleaning system can have a good cleaning effect in the cleaning link.

[0005] To this end, an object of the present invention is to provide a beer wort filtration system, which includes a tank body, a main shaft erected in the tank body, and a motor placed on the tank body for driving the main shaft to rotate, the tank body is provided with a tiller arm connected to the main shaft, and a tiller arranged below the tiller arm, the upper end of the tiller is fixed to the tiller arm, and it is characterized in that: a scraper and a lifting mechanism for driving the scraper to rise and fall are provided in the tank body, the lifting mechanism includes a connecting rod, a steel rope and a traction device, the traction device is fixed to the tank body, the upper end of the connecting rod is slidably matched with the tiller arm, the lower end of the connecting rod is fixedly connected to the scraper, the lower end of the steel rope is fixed to the bottom of the scraper or the connecting rod, and the other end of the steel rope is connected to the traction device through the tiller arm and the channel in the main shaft. The scraper is raised and lowered by pulling the connecting rod with a steel rope, so that except for the necessary tillage arm and tillage knife, only the connecting rod is added to the tank body, and the connecting rod is arranged vertically. During the cleaning process, the spray water can flow from top to bottom along the connecting rod. Compared with the existing transmission mechanism for driving the scraper to rise and fall, the structure is simpler and the cleaning effect is better.

[0006] According to an example of the present invention, the traction device is an electric push rod embedded in the main shaft, the electric push rod has a piston rod that is telescopic along the axial direction, and the end of the steel rope is fixed to the piston rod.

[0007] According to an example of the present invention, the upper end of the connecting rod vertically penetrates above the tiller arm, and the end of the connecting rod above the tiller arm has a handle. The handle can be used to manually pull the connecting rod in the event of a traction device failure, thereby achieving manual lifting and lowering of the scraper.

[0008] According to an example of the present invention, the main shaft outer sleeve is provided with a bearing cylinder, and there are two tiller arms, which are respectively fixed to the bearing cylinder and evenly arranged along the circumferential direction.

[0009] According to an example of the present invention, the support cylinder is movably connected to the main shaft, and the tank body is provided with a height adjustment device for driving the support cylinder to move in the vertical direction. The support cylinder can drive the tiller arm to move upward or downward, thereby allowing the position of the tiller to be adjusted arbitrarily according to the needs of each step in the entire wort filtration process.

[0010] According to an example of the present invention, the height adjustment device includes an electric push rod and a pull rod connected to the tank body and located above the supporting cylinder. A first rotating joint is provided on the movable end of the electric push rod. The lower end of the pull rod is fixed to the supporting cylinder or the plowing blade arm. The upper end of the pull rod is provided with a second rotating joint connected to the first rotating joint. The first rotating joint and the second rotating joint are limited axially and matched in circumferential rotation.

[0011] According to an example of the present invention, the main shaft has an upper section with a smaller diameter and a lower section with a larger diameter, and the upper section and the lower section of the main shaft are transitionally connected via a connecting surface; The bearing cylinder has a central channel therein, the central channel including a first channel and a second channel, the inner diameter of the first channel is larger than the diameter of the upper section of the main shaft and smaller than the diameter of the lower section of the main shaft, the inner diameter of the second channel is equal to the diameter of the lower section of the main shaft, and an inclined surface matching the connecting surface is provided between the first channel and the second channel; The inner side wall of the first channel is inscribed to form a liquid passage, the upper end of which passes through the upper end surface of the bearing tube, and the lower end of which passes through the inclined surface, so that the groove bottom surface of the liquid passage in the radial direction is flush with the inner side surface of the second channel. On the one hand, when the bearing tube descends to the point where the connection surface abuts against the inclined surface, it can automatically position, so that the main shaft drives the bearing tube to rotate, and the bearing tube and the main shaft are automatically disengaged after ascending, without the need to shut down the motor additionally; on the other hand, the spray water can clean the inner side surface of the bearing tube, and there is no dead corner for cleaning at the connection between the bearing tube and the main shaft.

[0012] According to an example of the present invention, a notch is provided on the outer wall of the bearing tube at a position between the two tiller arms, the notch is connected to the central channel along the radial direction of the bearing tube, and penetrates the upper end face and the lower end face of the bearing tube along the axial direction of the bearing tube, and the width D1 of the notch is greater than or equal to the diameter of the upper section of the main shaft, and less than the diameter of the lower section of the main shaft. The notch is provided to facilitate the installation process of the bearing tube, and the bearing tube can be loaded and unloaded after the main shaft and the tank body are installed.

[0013] According to an example of the present invention, the tiller blade includes a longitudinally arranged tiller blade carrier and tiller blades arranged in sequence along the longitudinal direction of the tiller blade carrier; the tiller blade has an assembly hole that allows the tiller blade to be sleeved outside the tiller blade carrier, the length L2 of the assembly hole is greater than the length L1 of the tiller blade carrier, and a horizontal bar is provided in the assembly hole; the tiller blade carrier has a strip-shaped mounting hole, the strip-shaped mounting hole includes a wide hole section whose width H1 is greater than the thickness H3 of the horizontal bar and a narrow hole section whose width H2 is equal to the thickness of the horizontal bar; the horizontal bar is located in the strip-shaped mounting hole and the horizontal bar is loosely fitted in the wide hole section or tightly fitted in the narrow hole section as the tiller blade moves. By changing the structure of the tiller blade, the tiller blade and the tiller blade carrier are loosened from each other during the cleaning process, reducing the cleaning dead angle on the back of the tiller blade.

[0014] According to an example of the present invention, the front end of the tilling blade is inclined downward along the height direction.

[0015] The above technical scheme has the following advantages or beneficial effects: First, the lifting and lowering of the scraper is achieved by pulling the connecting rod with a steel rope, so that in addition to the necessary tilling blade arm and tilling blade, only the connecting rod is added to the tank body, and the connecting rod is vertically arranged. In the cleaning process, the spray water can flow from top to bottom along the connecting rod. Compared with the existing transmission mechanism for driving the scraper to lift and lower, the structure is simpler and the cleaning effect is better; secondly, the supporting cylinder can drive the tilling blade arm and the tilling blade on the tilling blade arm to lift and lower, and the tilling blade can be automatically lifted and lowered according to the needs at any time during the entire wort filtration process; thirdly, a notch is provided on the supporting cylinder, and the notch can make the loading and unloading process between the supporting cylinder and the main shaft more convenient; finally, the tilling blade on the tilling blade is set to be movable, which can achieve the same stirring effect as the existing tilling blade during the stirring process, and since the tilling blade is loose during the cleaning process, the cleaning dead corner on the back of the tilling blade can be reduced, thereby improving the cleaning effect.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the beer wort filtering system of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the various components on the tillage blade arm and the main shaft.

[0019] Figure 3 It is a schematic diagram of the assembly between the bearing cylinder and the main shaft.

[0020] Figure 4 for Figure 3 Schematic diagram of the explosion.

[0021] Figure 5 for Figure 3 Schematic top view of .

[0022] Figure 6 for Figure 5 Section view along the “AA” direction.

[0023] Figure 7 for Figure 6 Schematic diagram of the explosion.

[0024] Figure 8 The present invention is an assembly schematic diagram of a tillage blade carrier plate and a tillage blade in an idle state.

[0025] Fig. 9 This is a schematic diagram of the assembly between the cultivator blade carrier plate and the cultivator blade of the present invention in a working state. Among them, 1. tank body; 2. main shaft; 2.1. upper section; 2.2. connecting surface; 2.3. lower section; 3. motor; 4. tiller arm; 5. tiller; 5.1. tiller carrier plate; 5.1.1. wide hole section; 5.1.2. narrow hole section; 5.2. tiller blade; 5.2.1. assembly hole; 5.2.2. horizontal bar; 6. scraper; 7. connecting rod; 8. steel rope; 9. electric push rod; 10. handle; 11. bearing tube; 11.1. first channel; 11.2. inclined surface; 11.3. second channel; 11.4. liquid passage; 11.4.1. bottom surface of groove; 11.5. notch; 0 joint. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The beer wort filtering system according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] The present invention provides a beer wort filtering system, as shown in the figure, which comprises a tank body 1, a main shaft 2 erected in the tank body 1, and a motor 3 placed on the tank body 1 for driving the main shaft 2 to rotate, the upper end of the main shaft 2 passes through the top of the tank body 1 and is transmission-connected to the motor 3, a tiller arm 4 connected to the main shaft 2 and a tiller 5 arranged below the tiller arm 4 are arranged in the tank body 1, one end of the tiller arm 4 is connected to the main shaft, and the other end extends in the horizontal direction, the upper end of the tiller 5 is fixed to the tiller arm 4, and the characteristics are as follows: The characteristics are: a scraper 6 and a lifting mechanism for driving the scraper 6 to rise and fall are provided in the tank body 1, the lifting mechanism includes a connecting rod 7, a steel rope 8 and a tractor, the tractor is fixed on the tank body 1, the connecting rod 7 is arranged in a vertical direction, and the upper end of the connecting rod 7 is slidably matched with the tiller arm 4, the lower end of the connecting rod 7 is fixedly connected with the scraper 6, the lower end of the steel rope 8 is fixed to the scraper 6 or to the bottom of the connecting rod 7, and the other end of the steel rope 8 is connected to the tractor through the channel in the tiller arm 4 and the main shaft 2. In this embodiment, the space below the tiller arm 4 has only the connecting rod 7 arranged vertically in addition to the tiller 5 and the scraper 6 that originally exist, and most of the steel rope 8 is connected to the tractor through the channel in the tiller arm 4 and the main shaft 2. Therefore, in the cleaning process after the discharge of the dregs, since the connecting rod 7 is arranged vertically, the water can flow along the connecting rod 7 after the spray water is sprayed from top to bottom, so that the wort or particles attached to the outer surface of the connecting rod 7 can be cleaned.

[0029] Based on one of the preferred embodiments of the tractor in the above embodiment: the tractor is a winding winch fixed outside the tank body 1, the winding winch is driven by a separate motor, and the end of the steel rope 8 is fixed on the winding winch, thereby realizing the retraction and release of the steel rope 8. Of course, if Figure 1 As shown, due to the existence of the motor 3 driving the main shaft 2 to rotate, in order to avoid mutual interference between the motor and the winding capstan, the main shaft 2 is exposed outside the tank body 1 and is provided with a rotating bracket, the rotating bracket is fixed to the main shaft 2, and the winding capstan and the motor corresponding to the winding capstan are both installed on the rotating bracket. The winding capstan can be selected from a variety of existing commercially available rope reels, so the structure of the winding capstan is not described one by one.

[0030] Based on the preferred second embodiment of the traction device in the above embodiment: the traction device is an electric push rod 9 embedded in the main shaft 2, and the electric push rod 9 has a piston rod that can be extended and retracted along the axial direction. The end of the steel rope 8 is fixed to the piston rod, and the power supply on the tank body is electrically connected to the electric push rod 9 through the opening at the end of the main shaft 2 and the internal channel. The steel rope 8 is pulled by the extension and retraction of the piston rod on the electric push rod 9, and because the electric push rod 9 is embedded in the main shaft 2, it is isolated from the space in the tank body 1 and will not cause pollution. The electric push rod 9 is an existing commercially available product, so the structure and model of the electric push rod 9 are not described in detail.

[0031] Preferably, the upper end of the connecting rod 7 vertically penetrates above the tiller arm 4, and the end of the connecting rod 7 located above the tiller arm 4 has a handle 10. The handle 10 can be provided to manually adjust the lifting and lowering of the scraper 6 in an emergency in the event of a tractor failure.

[0032] In the above embodiment, the lower end of the steel rope 8 is fixed to the connecting rod 7, so that the steel rope 8 can drive the connecting rod 7 and the scraper 6 at the lower end of the connecting rod 7 to move upward synchronously under the action of the pulling force of the traction device. After the steel rope 8 passes through the channel in the tiller arm 4, it extends in the vertical direction until it is fixed to the bottom position of the connecting rod 7. At this time, a wire hole connected to the channel is formed on the side wall of the tiller arm 4. The steel rope 8 passes through the wire hole to the outside of the tiller arm 4. At this time, the wire hole is set with the hole opening facing downward, and a sealing ring is provided on the wire hole to reduce the external water vapor or particulate matter from flowing back through the wire hole into the channel of the tiller arm 4.

[0033] like Figure 1 As shown, the main shaft 2 is provided with a bearing cylinder 11 on its outer sleeve, and there are two tiller arms 4. The two tiller arms 4 are respectively fixed to the bearing cylinder 11 and are evenly arranged along the circumferential direction.

[0034] In the prior art and the above-mentioned embodiments, the position of the tiller arm 4 along the longitudinal direction or along the height direction is fixed, that is, the tiller arm 4 only drives the tiller 5 to rotate and stir in the circumferential direction. However, on the one hand, during the process of discharging the slop, the filter layer will be pushed by the scraper 6 and move toward the slop outlet. At this time, the bottom of the tiller 5 is still in contact with the filter layer and rotates synchronously with the rotation of the main shaft. Since the filter layer is relatively compact after being drained, the resistance to the rotation of the tiller 5 is relatively large, and there will be a problem that the tiller 5 gradually bends and deforms due to the resistance in the same direction for a long time. On the other hand, after discharging the slop, the cleaning system at the top of the inner cavity of the tank body 1 is used for spraying and cleaning. Since the tiller arm 4 and the tiller 5 are in a lower position, that is, the nozzle of the spraying system is far away from the tiller 5, the spraying effect needs to be improved. Based on the existence of the above-mentioned technical problems, the improvement of this embodiment is that the support cylinder 11 is movably connected with the main shaft 2, and the tank body 1 is provided with a height adjustment device 12 for driving the support cylinder 11 to move in the vertical direction.

[0035] Specifically, the height adjustment device 12 includes an electric push rod 12.1 and a pull rod 12.2 connected to the tank body 1 and located above the supporting cylinder 11. A first rotating joint 12.3 is provided on the movable end of the electric push rod 12.1. The lower end of the pull rod 12.2 is fixed to the supporting cylinder 11 or the tiller arm 4. The upper end of the pull rod 12.2 is provided with a second rotating joint 12.4 connected to the first rotating joint 12.3. The first rotating joint 12.3 and the second rotating joint 12.4 are limited in the axial direction and matched in circumferential rotation.

[0036] Since the electric push rod 12.1 can pull the bearing tube 11 up and down in the height direction through the pull rod 12.2, the blade arm 4 and the blade 5 located on the blade arm 4 can be synchronously moved up or down, that is, after the blade 5 moves up, the bottom of the blade 5 is away from the filter layer during the slug discharge process, and the slug discharge process will not cause the blade 5 to be stressed. At the same time, during the spray cleaning process, the blade 5 can be closer to the spray head after the position is raised, so the spray cleaning of the blade 5 is more thorough, improving the cleaning effect. Finally, the blade 5 is reset to the next wort filtering operation. In this embodiment, due to the presence of the first rotating joint 12.3 and the second rotating joint 12.4, after the bearing tube 11 moves down, the main shaft 2 drives the bearing tube 11 to rotate while the pull rod 12.2 rotates synchronously. At this time, the first rotating joint 12.3 and the second rotating joint 12.4 rotate relative to each other, so that the electric push rod 12.1 can maintain relative stillness in the circumferential direction. Specifically, the first rotating joint 12.3 and the second rotating joint 12.4 are annular structures sleeved outside the main shaft 2, and the first rotating joint 12.3 and the second rotating joint 12.4 are sleeved with each other, so that the first rotating joint 12.3 and the second rotating joint 12.4 can rotate relative to each other around the axis of the main shaft 2, and the first rotating joint 12.3 and the second rotating joint 12.4 are axially limited. The first rotating joint 12.3 and the second rotating joint 12.4 are axially limited while rotating relative to each other, which is an existing conventional technology, including but not limited to the first rotating joint 12.3 having an annular protrusion, the second rotating joint 12.4 having an annular groove matching the protrusion, the protrusion being stuck in the annular groove, so that the first rotating joint 12.3 and the second rotating joint 12.4 are axially limited without affecting the relative rotation of the first rotating joint 12.3 and the second rotating joint 12.4.

[0037] Based on the preferred embodiment above, the main shaft 2 has an upper section 2.1 and a lower section 2.3, the diameter of the lower section 2.3 is larger than the diameter of the upper section 2.1, and the upper section 2.1 with a smaller diameter and the lower section 2.3 with a larger diameter of the main shaft 2 are transitionally connected via a connecting surface 2.2; The bearing tube 11 has a central channel therein, the central channel comprising a first channel 11.1 and a second channel 11.3, the inner diameter of the first channel 11.1 is larger than the diameter of the upper section 2.1 of the main shaft 2 and smaller than the diameter of the lower section 2.3 of the main shaft 2, the inner diameter of the second channel 11.3 is substantially equal to the diameter of the lower section 2.3 of the main shaft 2, and an inclined surface 11.2 matching the connecting surface 2.2 is provided between the first channel 11.1 and the second channel 11.3; The inner side wall of the first channel 11.1 is inscribed to form a liquid passage 11.4, the upper end of which passes through the upper end surface of the carrier tube 11, and the lower end of which passes through the inclined surface 11.2, so that the groove bottom surface 11.4.1 of the liquid passage 11.4 along the radial direction is flush with the inner side surface of the second channel 11.3. In the present embodiment, when the supporting tube 11 descends until the connecting surface 2.2 and the inclined surface 11.2 abut against each other, the supporting tube 11 rotates synchronously with the main shaft 2, and after the supporting tube 11 ascends, the supporting tube 11 leaves the position of the lower section 2.3. At this time, due to the existence of the liquid passage 11.4, the spraying water can flow from top to bottom through the liquid passage 11.4 along the axial direction of the main shaft 2. In this process, the outer surface of the main shaft 2 and the entire central channel of the supporting tube 11 can be cleaned, especially since the inner diameter of the first channel 11.1 is larger than the diameter of the upper section 2.1 of the main shaft 2. Therefore, the first channel 11.1 is not in direct contact with the upper section 2.1. During the spraying process, the inner wall of the first channel 11.1 and the outer wall of the upper section 2.1 can be cleaned, and there will be no contact between the two and leaving a dead corner for cleaning.

[0038] Preferably, in order to realize synchronous rotation of the bearing tube 11 and the main shaft 2 after the bearing tube 11 descends, the cross section of the lower section 2.3 of the main shaft 2 is a non-circular shape, for example, the cross section of the lower section 2.3 is a square, and the four corners of the square are rounded. The cross section of the second channel 11.3 matches the cross section of the lower section 2.3, so that the main shaft 2 can drive the bearing tube 11 to rotate synchronously after the bearing tube 11 descends.

[0039] Based on the above preferred embodiments, Figure 3-7 As shown, a notch 11.5 is provided on the outer wall of the bearing tube 11 at a position between the two tiller arms 4. The notch 11.5 is connected to the central channel along the radial direction of the bearing tube 11, and penetrates the upper end face and the lower end face of the bearing tube 11 along the axial direction of the bearing tube 11. The width D1 of the notch 11.5 is greater than or equal to the diameter of the upper section 2.1 of the main shaft 2, and is smaller than the diameter of the lower section 2.3 of the main shaft 2. Thus, the bearing tube 11 can be installed on the main shaft 2 or removed from the main shaft 2 in a lateral manner after ascending. At the same time, after the bearing tube 11 descends, since the size of the notch is smaller than the diameter of the lower section 2.3 of the main shaft 2, the bearing tube 11 will fall out of the notch during the mixing process. In this embodiment, the bearing tube 11 can be installed after the main shaft 2 is installed in place, which brings convenience to the installation process. At the same time, the bearing tube 11 can be directly removed during the subsequent maintenance process without removing the main shaft 2.

[0040] The blades on the existing tillage blades and the tillage blades in the above-mentioned embodiments are fixed. However, since the existing spraying systems are mostly spraying from top to bottom, the back of the blades on the tillage blades, especially the connection between the blades and the tillage blade holder, is prone to have a cleaning dead angle. Therefore, the preferred embodiment of this embodiment is: Figure 8-Figure 9 As shown, the tiller blade comprises a longitudinally arranged tiller blade carrier plate 5.1 and tiller blades 5.2 arranged in sequence along the longitudinal direction of the tiller blade carrier plate 5.1; the tiller blade 5.2 has an assembly hole 5.2.1 that allows the tiller blade 5.2 to be sleeved outside the tiller blade carrier plate 5.1, and the assembly hole 5.2.1 is in a long strip structure, and the width of the assembly hole 5.2.1 is adapted to the thickness of the tiller blade carrier plate 5.1, and the length L2 of the assembly hole 5.2.1 is greater than the length L1 of the tiller blade carrier plate 5.1, and the assembly hole 5.2.1 has a horizontal strip 5 .2.2; the plow blade carrier plate 5.1 has a strip-shaped mounting hole, which includes a wide hole section 5.1.1 and a narrow hole section 5.1.2 that are interconnected. The width H1 of the wide hole section 5.1.1 is greater than the thickness H3 of the cross bar 5.2.2, and the width H2 of the narrow hole section 5.1.2 is equal to the thickness of the cross bar 5.2.2; the cross bar 5.2.2 is located in the strip-shaped mounting hole and the cross bar 5.2.2 is loosely fitted in the wide hole section 5.1.1 or tightly fitted in the narrow hole section 5.1.2 as the plow blade 5.2 moves. In this embodiment, during the plow blade stirring process, as the plow blade 5 rotates, the resistance encountered by the plow blade will move along the Fig. 9 A force is applied to the tilling blade 5.2 in the direction of the arrow shown. At this time, the tilling blade 5.2 will move to the right, and the horizontal bar 5.2.2 will be inserted into the narrow hole section 5.1.2. Since the width H2 of the narrow hole section 5.1.2 is substantially equal to the thickness of the horizontal bar 5.2.2, a tight fit is formed between the horizontal bar 5.2.2 and the narrow hole section 5.1.2. At this time, the tilling blade 5.2 and the tilling blade carrier plate 5.1 are relatively still, so that the angle of the tilling blade 5.2 is fixed, and it can achieve the same stirring effect as the existing tilling blade. In the cleaning process, the tiller blade 5 is stationary, or the main shaft 2 can drive the tiller blade 5 to reciprocate and reverse. Under the inertia of acceleration and deceleration, the tiller blade 5.2 can be disengaged from the narrow hole section 5.1.2 and move to the wide hole section 5.1.1. At this time, since the width H1 of the wide hole section 5.1.1 is greater than the thickness H3 of the horizontal bar 5.2.2, the tiller blade 5.2 and the tiller blade carrier plate 5.1 are loose. Under the spraying effect of the spray water, the tiller blade 5.2 is constantly shaking, which can be beneficial to the cleaning of the back of the tiller blade 5.2 and reduce or even eliminate the cleaning dead corners on the back of the tiller blade 5.2. In addition, part of the cleaning water can also flow through the assembly hole 5.2.1, which is more conducive to eliminating the cleaning dead corners. Finally, the tiller blade can be cleaned more thoroughly.

[0041] Based on the above preferred embodiments, Figure 8 and Fig. 9As shown, the front end of the tilling blade 5.2 is inclined downward in the height direction.

[0042] It should be noted here that in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0048] For those skilled in the art, various changes and modifications will undoubtedly be obvious after reading the above description. Therefore, the attached claims should be regarded as covering all changes and modifications of the true intent and scope of the present invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to still be within the intent and scope of the present invention.

Claims

1. A beer wort filtration system, comprising a tank body (1), a main shaft (2) erected in the tank body (1), and a motor (3) disposed on the tank body (1) for driving the main shaft (2) to rotate, wherein a tiller arm (4) connected to the main shaft (2) and a tiller (5) disposed below the tiller arm (4) are disposed in the tank body (1), wherein the upper end of the tiller (5) is fixed to the tiller arm (4), and characterized in that: The tank body (1) is provided with a scraper (6) and a lifting mechanism for driving the scraper (6) to rise and fall. The lifting mechanism comprises a connecting rod (7), a steel rope (8) and a tractor. The tractor is fixed to the tank body (1). The upper end of the connecting rod (7) is slidably matched with the tiller arm (4). The lower end of the connecting rod (7) is fixedly connected to the scraper (6). The lower end of the steel rope (8) is fixed to the bottom of the scraper (6) or the connecting rod (7). The other end of the steel rope (8) is connected to the tractor via a channel in the tiller arm (4) and the main shaft (2).

2. The beer wort filtration system according to claim 1, characterized in that: The traction device is an electric push rod (9) embedded in the main shaft (2), the electric push rod (9) is provided with a piston rod that is telescopic in the axial direction, and the end of the steel rope (8) is fixed to the piston rod.

3. The beer wort filtration system according to claim 2, characterized in that: The upper end of the connecting rod (7) passes through the top of the tiller arm (4) in the vertical direction, and the end of the connecting rod (7) located above the tiller arm (4) is provided with a handle (10).

4. The beer wort filtration system according to any one of claims 1 to 3, characterized in that: The main shaft (2) is provided with a bearing cylinder (11) on its outer sleeve, and there are two tiller arms (4), the two tiller arms (4) being respectively fixed to the bearing cylinder (11) and evenly arranged in the circumferential direction.

5. The beer wort filtration system according to claim 4, characterized in that: The bearing cylinder (11) is movably connected to the main shaft (2), and the tank body (1) is provided with a height adjustment device (12) for driving the bearing cylinder (11) to move in a vertical direction.

6. The beer wort filtration system according to claim 5, characterized in that: The height adjustment device (12) comprises an electric push rod (12.1) connected to the tank body (1) and located above the supporting cylinder (11) and a pull rod (12.2); a first rotating joint (12.3) is provided on the movable end of the electric push rod (12.1); the lower end of the pull rod (12.2) is fixed to the supporting cylinder (11) or the tiller arm (4); the upper end of the pull rod (12.2) is provided with a second rotating joint (12.4) connected to the first rotating joint (12.3); the first rotating joint (12.3) and the second rotating joint (12.4) are axially limited and circumferentially rotated in coordination.

7. The beer wort filtration system according to claim 6, characterized in that: The main shaft (2) comprises an upper section (2.1) with a smaller diameter and a lower section (2.3) with a larger diameter, and the upper section (2.1) and the lower section (2.3) of the main shaft (2) are transitionally connected via a connecting surface (2.2); The bearing tube (11) has a central channel therein, the central channel comprising a first channel (11.1) and a second channel (11.3); the inner diameter of the first channel (11.1) is larger than the diameter of the upper section (2.1) of the main shaft (2) and smaller than the diameter of the lower section (2.3) of the main shaft (2); the inner diameter of the second channel (11.3) is equal to the diameter of the lower section (2.3) of the main shaft (2); and an inclined surface (11.2) matching the connecting surface (2.2) is provided between the first channel (11.1) and the second channel (11.3); The inner side wall of the first channel (11.1) is inscribed to form a liquid passage channel (11.4), the upper end of the liquid passage channel (11.4) penetrates the upper end surface of the supporting tube (11), and the lower end of the liquid passage channel (11.4) penetrates the inclined surface (11.2), so that the groove bottom surface (11.4.1) of the liquid passage channel (11.4) along the radial direction is flush with the inner side surface of the second channel (11.3).

8. The beer wort filtration system according to claim 7, characterized in that: A notch (11.5) is provided on the outer wall of the support tube (11) at a position between the two tiller arms (4); the notch (11.5) is connected to the central channel along the radial direction of the support tube (11) and penetrates the upper end surface and the lower end surface of the support tube (11) along the axial direction of the support tube (11); a width D1 of the notch (11.5) is greater than or equal to the diameter of the upper section (2.1) of the main shaft (2) and is smaller than the diameter of the lower section (2.3) of the main shaft (2).

9. The beer wort filtration system according to any one of claims 5 to 8, characterized in that: The tiller blade (5) comprises a longitudinally arranged tiller blade carrier (5.1) and tiller blades (5.2) arranged in sequence along the longitudinal direction of the tiller blade carrier (5.1); the tiller blade (5.2) has an assembly hole (5.2.1) that allows the tiller blade (5.2) to be sleeved outside the tiller blade carrier (5.1); the length L2 of the assembly hole (5.2.1) is greater than the length L1 of the tiller blade carrier (5.1); and the assembly hole (5.2.1) has a horizontal strip (5.2.2); the plow blade carrier (5.1) has a strip-shaped mounting hole, the strip-shaped mounting hole comprises a wide hole section (5.1.1) whose width H1 is greater than the thickness H3 of the cross bar (5.2.2) and a narrow hole section (5.1.2) whose width H2 is equal to the thickness of the cross bar (5.2.2); the cross bar (5.2.2) is located in the strip-shaped mounting hole and the cross bar (5.2.2) is fitted in the wide hole section (5.1.1) with the movement clearance of the plow blade (5.2). 5.1.1) or fits tightly into a narrow hole section (5.1.2).

10. The beer wort filtration system according to claim 9, characterized in that: The front end of the tilling blade (5.2) is inclined downward in the height direction.

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