Royal jelly filtration device

Abstract

This utility model discloses a royal jelly filtration device, comprising: a double-walled shell with an opening at the top, forming a sealed cooling liquid chamber between the inner and outer walls, with a cooling liquid inlet and outlet at the top and bottom of the cooling liquid chamber respectively; a separating filter element rotatably disposed within the double-walled shell, including a suspended support tube and a multi-layer filter screen sleeved on the outer wall of the support tube, with multiple through holes in the support tube wall; and a royal jelly collection tank detachably disposed at the bottom of the double-walled shell and connected to the bottom of the shell. This utility model maintains the royal jelly at a low temperature through circulating cooling in the cooling liquid chamber, preventing damage to its nutrients. The multi-layer filter screen, combined with the rotating separating filter element, significantly improves filtration efficiency. This device is mainly used for high-efficiency low-temperature filtration of royal jelly and can be widely applied in the bee product processing industry.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment technology. More specifically, this utility model relates to a royal jelly filtration device. Background Technology

[0002] Temperature control is crucial for product quality during the royal jelly filtration process.

[0003] Traditional filtration equipment typically lacks an effective temperature control structure. During filtration, royal jelly is prone to overheating due to ambient temperature or heat generated by mechanical friction, leading to the degradation of its active ingredients (such as royal jelly acid and active enzymes) and affecting its nutritional value. Furthermore, existing filtration devices mostly employ fixed filter cartridge structures, resulting in low filtration efficiency. Cleaning or replacing the filter cartridges is also cumbersome, failing to meet the requirements of convenient equipment maintenance in industrial production. Attempts to cool the filter using external cooling equipment have yielded problems such as uneven temperature distribution and high energy consumption. Improving the filter cartridge structure presents technical challenges, including difficulties in sealing rotating parts and poor compatibility with the overall device. Summary of the Invention

[0004] One objective of this invention is to provide a royal jelly filtration device, comprising:

[0005] The double-walled shell has an opening at its top, and a sealed coolant chamber is formed between the inner and outer walls of the double-walled shell. The top and bottom of the coolant chamber are respectively provided with coolant inlet and coolant outlet.

[0006] The separation filter element is rotatably disposed within a double-walled housing. The separation filter element includes a suspended support tube and a multi-layered filter screen sleeved on the outer wall of the support tube. The support tube has multiple through holes in its wall.

[0007] The slurry collection tank has its free end detachably located at the bottom of the double-walled shell and is connected to the bottom of the double-walled shell.

[0008] Preferably, the pore size of the multi-layer filter screen is arranged in a gradient decreasing from the inside to the outside along the radial direction of the support tube, and the number of layers of the multi-layer filter screen is at least two.

[0009] Preferably, it also includes a filter element cover, which is detachably disposed at the upper end of the support tube, and the filter element cover has a feed inlet communicating with the upper end of the support tube;

[0010] It also includes a disc-shaped connecting part, which connects the upper end of the support tube to the upper end of the filter screen. The filter element cover has multiple first screw holes, and the disc-shaped connecting part has multiple second screw holes corresponding to the first screw holes. The corresponding first screw holes and second screw holes are fixed by screws.

[0011] Preferably, the bottom of the double-walled shell is symmetrically provided with a fixing part, and the fixing part is provided with a plurality of third screw holes. The cross-section of the slurry collecting tank is U-shaped, and the free end of the slurry collecting tank is provided with a plurality of fourth screw holes corresponding to the third screw holes. The corresponding third screw holes and fourth screw holes are fixed by screws.

[0012] Preferably, it also includes a filter element lower cover, the cross-section of which is similar to an "I" shape. The filter element lower cover is located at the bottom of the separating filter element, and the filter element lower cover connects the lower end of the support tube and the lower end of the filter screen.

[0013] Preferably, it also includes a drive structure, which includes a rotary driver with its fixed end located at the bottom of the inner part of the double-walled housing, and a drive rod located on the output shaft of the rotary driver. The output shaft of the rotary driver is arranged facing upwards, and the upper end of the drive rod is fixedly connected to the bottom of the filter element cover.

[0014] Preferably, the closed end of the slurry collection tank is provided with a threaded hole, and also includes a slurry discharge plug, the sealing thread of which is provided in the threaded hole.

[0015] Preferably, a spiral guide plate is uniformly arranged circumferentially along the inner wall of the double-walled shell inside the coolant cavity. One side of the spiral guide plate is fixedly connected to the inner wall of the double-walled shell, and the other side extends toward the center of the coolant cavity and maintains a distance from the outer wall, forming a spiral coolant channel. The coolant inlet is connected to the starting end of the spiral coolant channel, and the coolant outlet is connected to the ending end of the spiral coolant channel.

[0016] Preferably, the pitch of the spiral guide plate gradually decreases along the coolant flow direction.

[0017] This utility model has at least the following beneficial effects:

[0018] First, this utility model uses a cooling liquid chamber in the double-walled shell for circulating cooling, which can control the temperature inside the double-walled shell at 5 to 15°C, preventing the royal jelly from losing its component activity due to excessive temperature. At the same time, the spiral guide plate extends the flow path of the cooling liquid, enhances the heat exchange efficiency, and makes the temperature inside the entire double-walled shell uniform, effectively controlling the temperature rise during the royal jelly filtration process and maintaining its component stability.

[0019] Secondly, the rotating separation filter element of this utility model, combined with the multi-layer filter screen, allows the centrifugal force generated during filtration to accelerate the passage of the filtrate through the filter screen. The pore size of the multi-layer filter screen decreases in a gradient from the inside to the outside along the radial direction of the support tube, forming a multi-stage filtration structure. This can gradually remove impurities of different particle sizes, increase the filtration area, reduce the clogging problem caused by the small pore size of a single filter screen, and achieve efficient separation of royal jelly.

[0020] Secondly, the double-walled shell, the separating filter element, the slurry collection tank and other components of this utility model adopt a detachable structure. For example, the slurry collection tank is connected to the double-walled shell through a fixing part and screws, and the filter element cover is detachably connected to the support tube, which facilitates the cleaning, replacement and inspection of each component and meets the frequent maintenance needs in industrial production.

[0021] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 This is a side sectional view of a royal jelly filtration device according to one of the technical solutions of this utility model.

[0023] Figure 2 for Figure 1 Enlarged view of the A-structure in the middle;

[0024] Figure 3 This is a side sectional view of a double-walled shell according to one of the technical solutions of this utility model;

[0025] Figure 4 This is a top view of a double-walled shell, which is one of the technical solutions of this utility model.

[0026] The markings in each of the attached figures are as follows:

[0027] 1. Double-walled shell; 2. Separating filter element; 3. Slurry collection tank; 4. Drive structure; 5. Fixing part; 6. Slurry discharge plug; 11. Coolant inlet; 12. Coolant chamber; 13. Spiral guide plate; 21. Support pipe; 22. Multi-layer filter screen; 23. Filter element top cover; 24. Filter element bottom cover; 25. Disc-shaped connecting part; 41. Rotary actuator; 42. Drive rod. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be noted that, unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of this utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] like Figures 1-4As shown, this utility model provides a royal jelly filtration device, comprising:

[0031] The double-walled shell 1 has an opening at its top. A closed coolant cavity 12 is formed between the inner and outer walls of the double-walled shell 1. The top and bottom of the coolant cavity 12 are respectively provided with a coolant inlet 11 and a coolant outlet. Specifically, the wall thickness of the inner and outer walls of the double-walled shell 1 can be selected from 2 to 5 mm, which can ensure structural strength and reasonably control the volume of the coolant cavity 12. The inner and outer wall materials of the double-walled shell 1 can be food-grade stainless steel, which can meet the requirements of corrosion resistance and is easy to clean. The coolant inside the coolant cavity 12 can be water or ethylene glycol aqueous solution. It is driven by an external circulation pump (such as a centrifugal pump or peristaltic pump), flows in from the coolant inlet 11 at the top, flows along the coolant cavity 12 and flows out from the coolant outlet at the bottom, so as to control the temperature inside the double-walled shell 1. The inner and outer walls of the double-walled shell 1 are vertically arranged, and the top opening is connected to the outside. The coolant inlet 11 and the coolant outlet can be located at the top corner and bottom corner of the coolant cavity 12, respectively, and are connected to the external cooling system through pipelines.

[0032] The separator filter element 2 is rotatably mounted within the double-walled housing 1. The separator filter element 2 includes a suspended support tube 21 and a multi-layered filter screen 22 fitted onto the outer wall of the support tube 21. The support tube 21 has multiple through holes in its wall. Specifically, the diameter of the through holes on the support tube 21 can be evenly distributed circumferentially along the tube wall, with a hole spacing of 10 to 20 millimeters to balance permeability and structural strength. The multi-layered filter screen 22 can have 2 to 4 layers. The inner layer filter screen pore size can be selected as 50 to 100 micrometers, and the outer layer filter screen pore size can be set to 10 to 30 micrometers, forming a gradient filtration structure. The support tube 21 can be made of hollow stainless steel, and the filter screen can be made of metal woven mesh (such as stainless steel wire mesh) or polymer material filter screen (such as polypropylene filter screen). It can be fitted onto the outer wall of the support tube 21 via flanges or clamps. The separator filter element 2 can... The support tube 21 is suspended in the top of the double-walled housing 1, with the bearing or rotating shaft installed inside. The axis of the support tube 21 is coincident with the axis of the double-walled housing 1. The bottom of the filter screen is kept at a distance from the bottom of the double-walled housing 1. During operation, the separation filter element 2 is driven to rotate by an external motor (such as a geared motor) or a rotary driver 41. In actual operation, the royal jelly is only briefly heated in a 30-40℃ warm water bath (not exceeding 40℃) when the viscosity is high to soften it. The temperature is strictly controlled within the safe range of the active ingredients. The royal jelly is poured from the top of the double-walled housing 1, passes through the rotating support tube 21, and enters the multi-layer filter screen 22 through the through hole. Particle impurities are intercepted by the filter screen. The filtrate enters the gap between the filter screen and the double-walled housing 1 due to the centrifugal force generated by the rotation of the filter screen, and then flows downward. It enters the collection tank 3 below through the hollow set at the bottom of the double-walled housing 1.

[0033] The collection tank 3 has its free end detachably located at the bottom of the double-walled shell 1 and connected to the bottom of the double-walled shell 1. Specifically, the capacity of the collection tank 3 can be selected according to actual production needs. The connection structure between the collection tank 3 and the bottom of the double-walled shell 1 can adopt a threaded connection (such as a standard pipe thread) or a snap-on quick-release structure. Food-grade sealing gaskets (such as silicone gaskets) are set at the connection parts. The material of the collection tank 3 can be stainless steel or food-grade polypropylene. An outward flange is set on the edge of the free end (top) of the tank body, which is fixed to the inner flange at the bottom of the double-walled shell 1 by bolts to ensure the sealing of the detachable connection. During the filtration process, the separated royal jelly flows into the collection tank 3 through the through hole at the bottom of the double-walled shell. After filtration, the collection tank 3 can be removed by loosening the connecting bolts for subsequent processing or cleaning.

[0034] In the above technical solution, the entire device is cooled by the circulation of the cooling liquid chamber 12, which can control the temperature inside the double-walled shell at 5 to 15°C, preventing the royal jelly from losing its activity due to excessive temperature. The rapidly rotating separation filter 2, in conjunction with the multi-layer filter screen 22, can accelerate the flow of the filtrate through the filter screen by centrifugal force during filtration, thereby improving filtration efficiency. At the same time, the detachable structure facilitates the maintenance and cleaning of each component. When cleaning with water or other liquids, the rapidly rotating separation filter 2, in conjunction with the multi-layer filter screen 22, can be used to clean the honey adhering to the separation filter 2 and the inner wall of the double-walled shell 1. At this time, the external cooling system can be replaced with a heating system to increase the temperature inside the double-walled shell 1, which helps to clean the honey.

[0035] In another technical solution, the pore size of the multi-layer filter 22 decreases in a gradient from the inside to the outside along the radial direction of the support tube 21. The multi-layer filter 22 has at least two layers; specifically, the multi-layer filter 22 can have two to four layers. When it is set to three layers, the pore sizes of the inner, middle, and outer layers can be selected as 80 micrometers, 40 micrometers, and 20 micrometers, respectively, forming a three-stage filtration structure. The material selection for each layer of filter must meet food-grade hygiene standards. Stainless steel wire mesh can be made of 304 or 316 material, and polypropylene filter can be made of food contact grade material that meets FDA standards. Through the gradient pore size setting, impurities of different particle sizes can be removed step by step, reducing the clogging problem caused by a single filter having too small a pore size. At the same time, the multi-layer structure can increase the filtration area. Combined with the rotation of the separation filter element 2, efficient separation of royal jelly can be achieved during the filtration process. The detachable filter structure facilitates subsequent cleaning and replacement, adapting to the frequent maintenance needs in industrial production.

[0036] In another technical solution, a filter element cover 23 is also included, which is detachably disposed at the upper end of the support tube 21, and the filter element cover 23 is provided with a feed port communicating with the upper end of the support tube 21.

[0037] It also includes a disc-shaped connecting part 25, which connects the upper end of the support tube 21 to the upper end of the filter screen. The filter element cover 23 has multiple first screw holes, and the disc-shaped connecting part 25 has multiple second screw holes corresponding to the first screw holes. The corresponding first and second screw holes are fixed by screws. Specifically, the outer diameter of the filter element cover 23 can be larger than the outer diameter of the support tube 21, and the material can be stainless steel or food-grade plastic. The inlet can be located at the center of the filter element cover 23, and an outward-facing guide ring can be provided at the edge of the inlet to facilitate the smooth flow of royal jelly into the support tube 21. The connection between the filter element cover 23 and the support tube 21 can be a threaded connection or a snap-fit ​​connection to ensure the sealing and detachability of the connection. The outer diameter of the disc-shaped connecting part 25 is the same as the outer diameter of the outermost filter screen, and the inner diameter is the same as the outer diameter of the support tube 21. The material can be the same stainless steel or polypropylene as the filter screen. During connection, the disc-shaped connecting part 25 is fitted onto the outside of the support tube 21, aligning its second screw holes with the first screw holes of the filter element cover 23. Then, it is tightened and fixed with stainless steel or nylon screws. The bottom surface of the disc-shaped connecting part 25 can be provided with an annular groove for embedding into the upper edge of the filter screen, which enhances the stability of the connection. During operation, the royal jelly to be filtered enters the support tube 21 through the feed port of the filter element cover 23, and then flows to the multi-layer filter screen 22 through the through holes in the tube wall of the support tube 21. The detachable connection between the filter element cover 23 and the support tube 21 makes it easy to remove the entire separating filter element 2 from the double-walled housing 1 for cleaning or filter screen replacement. The disc-shaped connecting part 25 firmly connects the support tube 21 and the filter screen, ensuring that the filter screen and the support tube 21 rotate synchronously during the rotation of the separating filter element 2, avoiding the decrease in filtration effect caused by relative displacement. The screw fixing method not only ensures the connection strength, but also facilitates disassembly and operation, which meets the requirements of convenient equipment maintenance in industrial production. At the same time, the structural design of the disc-shaped connecting part 25 can effectively prevent royal jelly from leaking from the connection between the filter screen and the support tube 21 during the filtration process, ensuring the sealing of the filtration process.

[0038] In another technical solution, the bottom of the double-walled shell 1 is symmetrically provided with fixing parts 5, and multiple third screw holes are opened on the fixing parts 5. The cross-section of the collection tank 3 is U-shaped, and multiple fourth screw holes corresponding to the third screw holes are opened on the free end of the collection tank. The corresponding third screw holes and fourth screw holes are fixed by screws. Specifically, the fixing parts 5 can be 2 to 4 symmetrically distributed rectangular plates, made of the same material as the double-walled shell 1, such as stainless steel. The cross-section of the collection tank 3 is U-shaped, and the width of the outward-curved edge of its free end (top) can be 15 to 25 mm. The diameter of the fourth screw hole is the same as that of the third screw hole, and the position corresponds one-to-one with the third screw hole. It is fixed by tightening with stainless steel screws. The bottom arc radius of the U-shaped structure facilitates the accumulation of royal jelly towards the center under the action of gravity. The connection between the fixing parts 5 and the bottom of the double-walled shell 1 can be by welding or integral molding. Welding requires To ensure a smooth weld without any welding slag residue and to avoid affecting the hygiene and safety of royal jelly, a food-grade silicone sealing ring can be installed at the connection surface between the royal jelly collection tank 3 and the fixing part 5. This ring is embedded in the groove of the outward-facing edge of the royal jelly collection tank 3 to ensure a tight seal. During operation, the filtered royal jelly flows into the royal jelly collection tank 3 through the through hole at the bottom of the double-walled shell 1. Through the guiding effect of the U-shaped structure, the flow is concentrated at the bottom of the tank. The royal jelly collection tank 3 and the double-walled shell 1 are detachably connected by the fixing part 5 and screws, making it easy to quickly remove the royal jelly collection tank 3 for cleaning or replacement after filtration. The symmetrically arranged fixing parts 5 and the evenly distributed screw holes ensure the stability of the connection and prevent the royal jelly collection tank 3 from shaking or shifting during device operation. The silicone sealing ring effectively prevents royal jelly leakage, ensuring the sealing and hygiene of the filtration process. It also facilitates the separation of the royal jelly collection tank 3 from the double-walled shell 1 during disassembly.

[0039] In another technical solution, a filter element lower cover 24 is also included, with a cross-section resembling an "I" shape. The filter element lower cover 24 is located at the bottom of the separating filter element 2, and connects the lower end of the support tube 21 to the lower end of the filter screen. Specifically, the "I"-shaped cross-section of the filter element lower cover 24 consists of an upper horizontal part, a vertical part, and a lower horizontal part. The outer diameter of the upper horizontal part is consistent with the outer diameter of the outermost filter screen. The material of the filter element lower cover 24 can be stainless steel or food-grade plastic, and the surface is polished to avoid residual royal jelly. An annular groove is formed on the upper surface of the upper horizontal part of the filter element lower cover 24, with a groove depth of 1 / 2 to 2 / 3 of the filter screen thickness, for embedding into the lower edge of the filter screen. The lower end of the support tube 21 is inserted into the inner hole of the vertical part of the filter element lower cover 24, and the two can... Using an interference fit or threaded connection, during operation, the lower cover 24 of the filter element firmly connects the support tube 21 to the lower end of the filter screen, forming an integral separation filter element 2 structure. During the rotation of the separation filter element 2, the I-shaped structure of the lower cover 24 can effectively disperse stress and prevent the filter screen from detaching from the support tube 21 due to centrifugal force. The design of the annular groove can limit the radial and axial displacement of the filter screen, ensuring the stability of the filter screen during high-speed rotation. The tight connection between the lower cover 24 and the support tube 21 can also prevent unfiltered royal jelly from leaking from the bottom of the separation filter element 2, ensuring the filtration effect. In addition, the lower horizontal part of the lower cover 24 can serve as a support surface for the rotating parts, and cooperates with the drive structure 4 described below to achieve smooth rotation of the separation filter element 2.

[0040] In another technical solution, a drive structure 4 is also included, comprising a rotary driver 41 with its fixed end located at the inner bottom of the double-walled housing 1, and a drive rod 42 mounted on the output shaft of the rotary driver 41. The output shaft of the rotary driver 41 faces upwards, and the upper end of the drive rod 42 is fixedly connected to the bottom of the filter element lower cover 24. Specifically, the rotary driver 41 can be a servo motor or a geared motor with a protection rating of not less than IP55 to adapt to humid working environments. The length of the drive rod 42 is determined according to the height of the double-walled housing 1 to ensure that the upper end of the drive rod 42 can be firmly connected to the bottom of the filter element lower cover 24 after the rotary driver 41 is installed. The material of the drive rod 42 can be stainless steel or aluminum alloy to improve wear resistance and corrosion resistance. The fixed end of the rotary driver 41 is installed at the center of the inner bottom of the double-walled housing 1 by bolts or welding. The lower end of the drive rod 42 is connected to the output shaft of the rotary driver 41 by a coupling. The coupling can be a flexible coupling or a rigid coupling to compensate for the misalignment between the two shafts. With slight radial, axial, and angular offsets, the upper end of the drive rod 42 can be connected to the bottom of the filter element cover 24 by a key or spline connection. During operation, the rotary driver 41 is powered on and drives the output shaft to rotate, transmitting power to the filter element cover 24 through the drive rod 42, thereby driving the entire separation filter element 2 to rotate within the double-walled housing 1. The rotational speed of the rotary driver 41 can be adjusted according to the viscosity of royal jelly and filtration requirements. Low speed is suitable for fine filtration of high-viscosity royal jelly, while high speed is suitable for rapid separation of low-viscosity royal jelly. The rigid connection between the drive rod 42 and the filter element cover 24 ensures the stability of power transmission and reduces vibration and noise during rotation. The use of a coupling can protect the rotary driver 41 from impact loads and extend its service life. In addition, the drive structure 4 is located entirely inside the double-walled housing 1, preventing the intrusion of external impurities and ensuring the reliability and hygiene of the equipment. A stainless steel isolation sleeve can be fitted around the drive structure 4 to prevent honey from contaminating the drive structure 4.

[0041] In another technical solution, the closed end of the royal jelly collection tank 3 is provided with a threaded hole, and a royal jelly discharge plug 6 is also included, with its sealing threaded connection located inside the threaded hole. Specifically, the threaded hole is located at the center or eccentric position of the closed end (bottom) of the royal jelly collection tank 3, the specific position being determined according to the shape of the royal jelly collection tank 3 and the royal jelly discharge requirements. The outer diameter of the screw portion of the royal jelly discharge plug 6 is adapted to the inner diameter of the threaded hole, facilitating manual tightening. The material of the royal jelly discharge plug 6 can be food-grade plastic (such as polypropylene PP). During operation, when a certain amount of royal jelly is collected in the royal jelly collection tank 3, the royal jelly is discharged from the threaded hole by unscrewing the royal jelly discharge plug 6. The royal jelly flows out through the hole and enters the subsequent storage or packaging process. The sealing structure of the royal jelly discharge plug 6 can effectively prevent royal jelly from leaking during storage, ensuring product quality and the hygiene of the production environment. The threaded connection method makes it easy for operators to quickly disassemble and install the royal jelly discharge plug 6, improving production efficiency. The setting of placing an O-ring can further enhance the sealing effect, prevent air from entering the royal jelly collection tank 3, and extend the shelf life of royal jelly. In addition, the head design of the royal jelly discharge plug 6 is ergonomic, and the surface can be set with anti-slip texture, which is easy to operate manually and can be opened and closed without the aid of tools.

[0042] In another technical solution, spiral guide plates 13 are uniformly arranged circumferentially along the inner wall of the double-walled shell 1 within the coolant cavity 12. One side of the spiral guide plate 13 is fixedly connected to the inner wall of the double-walled shell 1, and the other side extends towards the center of the coolant cavity 12 while maintaining a distance from the outer wall, forming a spiral coolant channel. The coolant inlet 11 is connected to the starting end of the spiral coolant channel, and the coolant outlet is connected to the ending end of the spiral coolant channel. Specifically, the spiral guide plate 13 can be made of stainless steel or aluminum alloy, and its surface is polished to reduce flow resistance. One side of the spiral guide plate 13 is fixedly connected to the inner wall of the double-walled shell 1 by welding or snap-fit, and the other side remains at a distance from the outer wall. A continuous spiral coolant channel is formed with a spacing of 5 to 10 mm. The coolant inlet 11 is smoothly connected to the starting end of the spiral coolant channel through an arc-shaped transition section. The radius of curvature of the transition section is 2 to 3 times the pipe diameter. A funnel-shaped diffuser section is set at the outlet. The cross-sectional area of ​​the coolant channel can remain constant along the flow direction or be designed as a tapering structure (contraction ratio 1:1.2 to 1:1.5) to regulate the coolant flow rate. During operation, the coolant flows into the spiral channel from the coolant inlet 11 at the top and flows spirally downward along the inner wall of the double-walled shell 1 under the guidance of the spiral guide plate 13. After sufficient heat exchange with the royal jelly inside the double-walled shell 1, it flows out from the coolant outlet at the bottom. The spiral guide plate 13 extends the flow path of the coolant, increases the heat exchange time, and forces the coolant into a turbulent state within the channel, thereby improving the convective heat transfer coefficient. The spacing between the coolant channel and the outer wall avoids direct contact between the guide plate and the outer wall, reducing the risk of heat loss. This structural design improves cooling efficiency and reduces energy consumption, meeting the process requirements of low-temperature filtration of royal jelly.

[0043] In another technical solution, the pitch of the spiral guide plate 13 gradually decreases along the flow direction of the coolant. Specifically, the coolant flows into the spiral channel from the top inlet, and enters smoothly at a low flow rate under the guidance of the larger pitch at the inlet end. As the pitch gradually decreases, the channel density increases, and the coolant is forced to accelerate its flow to adapt to the shrinking channel space. This design causes the coolant to form an increasing turbulence effect during the flow process, enhancing the heat exchange efficiency with the inner wall of the double-walled shell 1, while extending its residence time in the coolant cavity 12 (15% to 25% more than the equal pitch structure). The guide plate layout with gradually changing pitch can evenly distribute the circumferential flow of the coolant, avoid local flow dead zones, ensure that the temperature field around the entire separation filter element 2 remains balanced, effectively control the temperature rise during the royal jelly filtration process, maintain its compositional stability, and the detachable guide plate structure (such as being connected to the inner wall by bolts) facilitates cleaning and inspection during equipment maintenance, meeting the hygiene requirements of food processing equipment.

[0044] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A royal jelly filtration device, characterized in that, include: The double-walled shell has an opening at its top, and a sealed coolant chamber is formed between the inner and outer walls of the double-walled shell. The top and bottom of the coolant chamber are respectively provided with coolant inlet and coolant outlet. The coolant chamber is provided with spiral guide plates evenly arranged along the inner circumference of the double-walled shell. One side of the spiral guide plate is fixedly connected to the inner wall of the double-walled shell, and the other side extends toward the center of the coolant chamber and maintains a distance from the outer wall, forming a spiral coolant channel. The coolant inlet is connected to the starting end of the spiral coolant channel, and the coolant outlet is connected to the ending end of the spiral coolant channel. The pitch of the spiral guide plate gradually decreases along the direction of coolant flow; The separation filter element is rotatably disposed within a double-walled housing. The separation filter element includes a suspended support tube and a multi-layered filter screen sleeved on the outer wall of the support tube. The support tube has multiple through holes in its wall. It also includes a filter element bottom cover, which has an "I"-shaped cross-section. The filter element bottom cover is located at the bottom of the separation filter element and connects the lower end of the support tube to the lower end of the filter screen. It also includes a drive structure, which includes a rotary driver with its fixed end located at the bottom of the inner part of the double-walled housing, and a drive rod located on the output shaft of the rotary driver. The output shaft of the rotary driver is set upwards, and the upper end of the drive rod is fixedly connected to the bottom of the filter element cover. The slurry collection tank has its free end detachably located at the bottom of the double-walled shell and is connected to the bottom of the double-walled shell.

2. The royal jelly filtration device as described in claim 1, characterized in that, The pore size of the multi-layer filter screen decreases in a gradient from the inside to the outside along the radial direction of the support tube, and the number of layers in the multi-layer filter screen is at least two.

3. The royal jelly filtration device as described in claim 1, characterized in that, It also includes a filter element cover, which is detachably mounted on the upper end of the support tube, and the filter element cover has a feed port that communicates with the upper end of the support tube. It also includes a disc-shaped connecting part, which connects the upper end of the support tube to the upper end of the filter screen. The filter element cover has multiple first screw holes, and the disc-shaped connecting part has multiple second screw holes corresponding to the first screw holes. The corresponding first screw holes and second screw holes are fixed by screws.

4. The royal jelly filtration device as described in claim 1, characterized in that, The bottom of the double-walled shell is symmetrically provided with a fixing part, and multiple third screw holes are opened on the fixing part. The cross-section of the slurry collecting tank is U-shaped, and multiple fourth screw holes corresponding to the third screw holes are opened on the free end of the slurry collecting tank. The corresponding third screw holes and fourth screw holes are fixed by screws.

5. The royal jelly filtration device as described in claim 1, characterized in that, The closed end of the slurry collection tank is provided with a threaded hole and also includes a slurry discharge plug, the sealing thread of which is located in the threaded hole.

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