Multi-paddle stirring device for uniformly mixing and blending lemon sauce

Abstract

The invention discloses a multi-paddle stirring device for uniformly mixing and blending lemon sauce, which comprises an outer frame, and a conical screening assembly, a spiral conveying assembly, a stirring tank assembly and an additive adding assembly which are arranged in the outer frame, and a control center is arranged on one side of the outer frame. The control center comprises a main control module which is electrically connected with the motor driving module, the valve control module, the state acquisition module and the communication module, can control the conveying motor, the stirring motor and the control valve, acquires motor current and valve opening data, and can also interact with an external terminal. The main control module dynamically adjusts operation parameters through a preset program, automatic and intelligent operation of the device is achieved, the mixing uniformity and production efficiency of lemon jam are effectively improved, and the device is suitable for large-scale production of jam.

Description

TECHNICAL FIELD

[0001] The application provides a multi-paddle stirring device, and particularly relates to a multi-paddle stirring device for uniformly mixing and blending lemon sauce. BACKGROUND

[0002] In the field of food processing, in the production process of jam products such as lemon sauce, a stirring and mixing device is usually used to stir and blend various ingredients such as lemon raw materials, sugar and additives, so as to realize uniform mixing of the ingredients and ensure stability of product taste and quality. Such a device is a key equipment in a jam production line, and its performance directly affects production efficiency and quality of products.

[0003] The basic structure of an existing lemon sauce stirring device usually comprises a simple stirring tank and a stirring paddle arranged in the tank. Raw materials are generally directly put into the stirring tank by manual operation or simple conveying equipment, and some devices are equipped with a simple additive adding port. However, such a device has obvious deficiencies, for example, lacks a pretreatment and screening structure for raw materials, which easily leads to impurities or large pieces of raw materials entering the stirring link and affecting mixing effect. The raw materials cannot be preliminarily broken up during the conveying process, so that the raw materials are difficult to be quickly and uniformly mixed after entering the stirring tank. The stirring paddle is usually of a single structure and is not reasonably distributed, which easily causes stirring dead angles. The additive adding method is simple and cannot accurately control the adding amount and speed. Each link lacks coordinated control, and the overall degree of automation is low, thereby affecting stirring efficiency and final quality of lemon sauce. SUMMARY

[0004] The present application provides a multi-paddle stirring device for uniformly mixing and blending lemon sauce, which solves the problems of low stirring efficiency, uneven mixing and insufficient degree of automation of existing devices.

[0005] To solve the above technical problems, the application provides the following technical scheme: a multi-paddle stirring device for uniformly mixing and blending lemon sauce, comprising an outer frame, wherein a conical screening assembly, a screw conveying assembly, a stirring tank assembly and an additive adding assembly connected to one side of the stirring tank assembly are sequentially arranged in the outer frame from top to bottom.

[0006] The conical screening assembly comprises a conical screening hopper, the top of the screening hopper is provided with a top cover with an opening, and the bottom of the screening hopper is connected with a discharge pipe for conveying materials.

[0007] The screw conveying assembly comprises a screw conveying pipe, a screw conveying shaft is arranged in the screw conveying pipe, one end of the screw conveying shaft is connected with a conveying motor for driving rotation of the screw conveying shaft, one end of the screw conveying pipe is connected in communication with the discharge pipe of the screening hopper through a pipe, and the other end of the screw conveying pipe is connected in communication with the stirring tank assembly through a pipe.

[0008] The stirring tank assembly comprises a stirring tank body, a feeding port is arranged at the top of the stirring tank body and is communicated with the screw conveying assembly, a discharging port is arranged at the bottom of the stirring tank body, a multi-paddle stirring mechanism is arranged in the stirring tank body, the multi-paddle stirring mechanism comprises a stirring motor, an output shaft of the stirring motor extends into the stirring tank body and is connected with a stirring shaft, and a plurality of stirring paddles are arranged on the stirring shaft in an axial direction.

[0009] The additive adding assembly comprises an additive storage tank, an additive pipeline is connected to the bottom of the additive storage tank, a control valve is arranged on the additive pipeline, and one end of the additive pipeline, which is away from the additive storage tank, is communicated with the sidewall of the feeding port of the stirring tank body.

[0010] The control center of the outer frame is fixedly connected with the control conical screen material assembly, the screw conveying assembly, the stirring tank assembly and the additive adding assembly.

[0011] Preferably, a detachable screen is arranged at the opening of the top cover of the screening hopper, an openable and closable outer shell is arranged above the top cover of the screening hopper outside the screen, and a hot air blower arranged inside the outer frame is connected to one side of the openable and closable outer shell through a hot air pipe.

[0012] A plurality of supporting legs are fixedly connected to the outside of the screening hopper and are arranged inside the outer frame.

[0013] Preferably, the screw conveying pipe is arranged in an inclined manner, one end of the screw conveying pipe, which is at a lower horizontal height, is communicated with the discharging pipe, so that the preliminary dispersed material can be more efficiently input into the stirring tank assembly.

[0014] The two ends of the discharging pipe are detachably and sealingly connected through sealing flanges.

[0015] Preferably, the stirring paddles are paddle type stirring paddles, and a plurality of the stirring paddles are arranged in a spiral manner on the stirring shaft.

[0016] Preferably, a plurality of external connecting pipes are arranged below the additive storage tank, the external connecting pipes are used to connect external water sources or other additives, and the external connecting ports of the external connecting pipes are arranged at one end of the lower horizontal height, so that the additives can be slowly mixed with the additives in the additive storage tank after being pressurized and then be transported through the additive pipeline.

[0017] Preferably, the control center controls the start-stop and rotating speed of the conveying motor, the start-stop and rotating speed of the stirring motor, the opening and closing and opening degree of the control valve in the additive adding assembly, and can receive the running state feedback of each component to realize the automatic operation of the device.

[0018] Preferably, the control center includes a main control module, which is electrically connected to a motor drive module, a valve control module, and a status acquisition module. The motor drive module is electrically connected to the conveying motor and the stirring motor, and the valve control module is electrically connected to the control valve of the additive addition component.

[0019] Preferably, the status acquisition module includes a current sensor and a position sensor. The current sensor is connected in series with the conveying motor and the stirring motor to acquire the motor operating current. The position sensor is located at the valve stem of the control valve to acquire the valve opening position.

[0020] Preferably, the control center further includes a communication module, which is electrically connected to the main control module. The communication module uses RS485 or wireless WiFi communication to interact with external terminal devices.

[0021] Preferably, the main control module adopts a microcontroller or PLC controller, and the main control module has a preset stirring parameter adjustment program, which can automatically adjust the speed of the conveyor motor, the speed of the stirring motor and the opening of the control valve according to the feedback data of the status acquisition module.

[0022] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages compared with the prior art:

[0023] This device uses a conical sieve hopper in a conical sieve assembly with a detachable screen at the top cover opening to perform preliminary screening of raw materials. Simultaneously, the openable outer shell and hot air blower deliver hot air through hot air pipes for raw material pretreatment. The screened raw materials are then fed through an outlet pipe into an inclined spiral conveyor pipe. Driven by a conveyor motor, the spiral conveyor shaft initially disperses and conveys the raw materials. Through a sealed flange-connected pipe, the raw materials are efficiently introduced into a mixing tank. Inside the mixing tank, spirally distributed paddle-type agitators rotate axially in multiple layers under the drive of a mixing motor. Various additives, connected via an external pipe, are precisely injected through an additive addition pipe. The control center coordinates and controls the speeds of the conveyor motor and the mixing motor, as well as the opening of the additive valves, ensuring thorough mixing of the raw materials and additives under multi-blade three-dimensional agitation, achieving a highly efficient and uniform mixing effect.

[0024] The existing equipment operates with each component independently and lacks coordinated control logic, making it difficult to dynamically adjust the conveying speed, stirring intensity, and additive dosage according to the raw material status. This results in insufficient mixing accuracy of raw materials and additives and unstable stirring efficiency. At the same time, the control circuit structure of the existing equipment is simple and lacks a precise acquisition and feedback mechanism for key parameters such as motor operating status and valve opening. This makes it impossible to achieve fault warning and parameter adaptive adjustment, and it is also difficult to link with external equipment to form an intelligent production process.

[0025] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from an examination of the following, or may be learned from the practice of the invention. Attached Figure Description

[0026] Figure 1 This is a three-dimensional installation diagram of a multi-paddle mixing device for uniformly mixing and blending lemon jam according to the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram of the internal structure of a multi-blade mixing device for uniformly mixing and blending lemon jam according to the present invention;

[0028] Figure 3 This is a three-dimensional schematic diagram of the outer frame structure of a multi-blade stirring device for uniformly mixing and blending lemon jam according to the present invention.

[0029] Figure 4 This is a schematic diagram showing the connection state of a multi-blade mixing device for uniformly mixing and blending lemon jam according to the present invention.

[0030] Figure 5 This is a block diagram of the control center module of a multi-blade mixing device for uniformly mixing and blending lemon jam according to the present invention.

[0031] Figure 6 This is a timing diagram of the adjustment of the center parameters of a multi-blade mixing device for uniformly mixing and blending lemon jam according to the present invention.

[0032] Figure 7 This is a timing diagram of the communication interaction between the control center and the multi-blade stirring device for uniformly mixing and blending lemon jam according to the present invention.

[0033] Figure 8 This is a flowchart of the closed-loop control of the control center of a multi-paddle stirring device for uniformly mixing and blending lemon jam according to the present invention.

[0034] As shown in the figure:

[0035] 1. Conical screen assembly;

[0036] 11. Screening hopper; 12. Discharge pipe; 13. Screen mesh; 14. Openable outer casing; 15. Hot air duct; 16. Support legs;

[0037] 2. Screw conveyor assembly;

[0038] 21. Spiral conveyor pipe; 22. Conveyor motor;

[0039] 3. Mixing tank assembly;

[0040] 31. Mixing tank; 32. Multi-blade mixing mechanism; 33. Mixing motor; 34. Mixing blade;

[0041] 4. Additive addition components;

[0042] 41. Additive storage tank; 42. Additive pipeline; 43. External connection pipe;

[0043] 5. Control Center;

[0044] 6. Hot air blower. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] like Figure 1 and Figure 2As shown, this multi-blade mixing device for mixing lemon jam evenly has an outer frame. Inside the outer frame, from top to bottom, there are a conical screen assembly 1, a spiral conveyor assembly 2, a mixing tank assembly 3, and an additive addition assembly 4 connected to one side of the mixing tank assembly 3. A control center 5 is fixed to one side of the outer frame. The conical screening assembly 1 includes a conical screening hopper 11 with an open top cover and a discharge pipe 12 at the bottom. The screw conveyor assembly 2 includes a screw conveyor pipe 21 with a screw conveyor shaft inside. One end of the shaft is connected to a conveyor motor 22. One end of the screw conveyor pipe 21 is connected to the discharge pipe 12 of the screening hopper 11 through a pipe, and the other end is connected to the mixing tank assembly 3 through a pipe. The mixing tank assembly 3 has a mixing tank body 31 with an inlet at the top connected to the screw conveyor assembly 2 and an outlet at the bottom. It is equipped with a multi-blade stirring mechanism 32 inside, which includes a stirring motor 33. The motor output shaft extends into the tank body and is connected to the stirring shaft. Multiple stirring blades 34 are spaced axially on the shaft. The additive addition assembly 4 includes an additive storage tank 41 with an addition pipe 42 at the bottom. The pipe has a control valve, and the end of the pipe away from the storage tank is connected to the side wall of the inlet of the mixing tank body 31.

[0049] In this implementation scheme, the outer frame provides overall support, ensuring the orderly distribution of the conical sieve assembly 1, the screw conveyor assembly 2, the mixing tank assembly 3, the additive addition assembly 4, and the control center 5. The conical sieve hopper 11 of the conical sieve assembly 1 allows for smooth material entry, while the top opening facilitates feeding. The discharge pipe 12 transfers the material to the screw conveyor assembly 2, performing preliminary screening to remove impurities and ensure the purity of the material for subsequent mixing. The screw conveyor assembly 2's screw conveyor pipe 21, in conjunction with the internal screw conveyor shaft and conveyor motor 22, initially breaks up the material during transport, preventing clumping. The inclined conveyor pipe further facilitates efficient material transport to the mixing tank assembly 3. The mixing tank body 31 of the mixing tank assembly 3 provides mixing space. In the multi-blade mixing mechanism 32, the mixing motor 33 drives the mixing shaft to rotate, and multiple axially spaced mixing blades 34 on the shaft can mix the material from different heights and angles, eliminating dead zones and ensuring more uniform mixing of the lemon jam. The additive storage tank 41 of the additive addition component 4 stores the additives, while the addition pipeline 42 and control valves can precisely control the amount and timing of additive addition, ensuring thorough mixing of the additives and raw materials in the mixing tank. The control center 5 can coordinate and control the operation of each component, achieving automated operation and improving the efficiency and precision of mixing and blending. The overall structure works in synergy, effectively solving the problems of low mixing efficiency and uneven mixing in existing devices, thus improving the production quality and efficiency of lemon jam.

[0050] like Figure 2 and Figure 3As shown, a production and connection embodiment is provided. The outer frame supports the internal structures, and the structural connections between the internal and outer frames are as follows: The outer frame is a square frame structure, composed of multiple columns and beams connected together, providing stable support for the internal components. The conical screening assembly 1 is fixedly connected to the beams inside the outer frame via support feet 16 on the outside of its screening hopper 11, achieving its positioning within the frame. The spiral conveying pipe 21 of the spiral conveying assembly 2 is connected to the columns and beams of the outer frame via pipe supports, ensuring its stable inclined position. The bottom of the mixing tank 31 of the mixing tank assembly 3 is fixed to the bottom platform of the outer frame via a support base. The additive storage tank 41 of the additive adding assembly 4 is mounted on a column on one side of the outer frame via a bracket, and the adding pipe 42 is arranged along the columns and beams of the outer frame and connected to the mixing tank 31. The control center 5 is directly fixedly connected to a column on one side of the outer frame for convenient control of the components.

[0051] like Figure 3 and Figure 4 As shown, in the device, the top cover opening of the screening hopper 11 has a detachable screen 13. Outside the screen 13 is an openable outer shell 14 that fits over the top cover of the screening hopper 11. One side of the outer shell 14 is connected to a hot air blower 6 inside the outer frame via a hot air pipe 15. Several support feet 16 are fixed to the outside of the screening hopper 11 and are fixed inside the outer frame. The spiral conveying pipe 21 is inclined, with its lower horizontal end connected to the discharge pipe 12. Both ends of the discharge pipe 12 are detachably sealed via sealing flanges. The stirring paddle 34 is a blade type, with multiple stirring paddles 34 spirally distributed on the stirring shaft. Below the additive storage tank 41 are multiple external connecting pipes 43 for connecting to external water sources or other additives. The external connection ports of the external connecting pipes 43 are located at the lower horizontal end. The control center 5 can control the start and stop of the conveyor motor 22 and its speed, the start and stop of the stirring motor 33 and its speed, and the opening and closing of the control valves in the additive addition component 4. It can also receive feedback on the operating status of each component to realize the automated operation of the device.

[0052] In this implementation scheme, the detachable screen 13 can be replaced according to the raw material conditions for precise screening; the openable outer shell 14, in conjunction with the hot air blower 6 and hot air pipe 15, can introduce hot air into the screening hopper 11 for pre-treatment such as drying of the raw materials; the support feet 16 ensure the stability of the screening hopper 11. The inclined spiral conveying pipe 21, combined with the discharge pipe 12 connected by a sealed flange, facilitates the flow of raw materials and is easy to disassemble and maintain. The spirally distributed paddle-type stirring paddle 34 can agitate the raw materials from different levels and angles when the stirring shaft rotates, enhancing the mixing effect. Multiple external connection pipes 43 facilitate the connection of various additives or water sources; the low horizontal external connection ports help additives to smoothly enter the additive storage tank 41 and be mixed with the internal substances before being transported. The control center 5 accurately controls and receives status feedback from each component, realizing the automated and intelligent operation of the device, further improving the efficiency and uniformity of lemon jam mixing and blending.

[0053] When using this multi-paddle mixer to mix and blend lemon jam evenly, it is necessary to use a raw material transport vehicle, as is available in the technology, to transport the lemon raw materials to the sieve hopper 11 of the conical sieve assembly 1. The raw material transport vehicle can be a common electric transport vehicle, which is convenient and flexible for transferring raw materials. At the same time, after the mixing is completed, the existing pipeline pump is used to transport the mixed lemon jam to the subsequent storage tank or packaging equipment through the discharge port of the mixing tank 31. The pipeline pump can be a stainless steel centrifugal pump to ensure corrosion resistance and stable delivery. In addition, the screen 13 in the device can be made of 304 stainless steel screen, which has good corrosion resistance and strength and can effectively screen raw materials. The hot air blower 6 can be an industrial hot air generator to provide stable hot air for raw material pretreatment. The mixing paddle 34 is made of food-grade stainless steel to ensure that the lemon jam is not contaminated during the mixing process. The additive storage tank 41 is made of acid and alkali resistant plastic material, which can be used for various additives and ensure the service life and safety of the storage tank.

[0054] Specifically, during installation, the outer frame can be fixed to the concrete foundation with expansion bolts. The connection between each component and the outer frame adopts the existing installation method of welding or bolting. For example, the support leg 16 is fastened to the outer frame beam with M10 bolts to ensure overall stability. In use, first weigh the required lemon raw materials, sugar, and other ingredients using an electronic scale, pour the raw materials into the hopper of the raw material conveyor, and then manually push the conveyor to the side of the screen hopper 11. After opening the openable outer shell 14, pour the raw materials into the screen 13 through the top cover opening. Before starting the hot air blower 6, the appropriate temperature (such as 50-60℃) needs to be set using its built-in temperature control knob. When the hot air enters the outer shell 14 through the hot air pipe 15, it can pass through the existing wind deflector on the outer shell. The hot air flow direction is adjusted by the plate; when the screw conveyor assembly 2 is running, the conveyor motor 22 is connected to the control center 5 through the existing frequency converter controller, and the operator sets the conveying speed (e.g., 100-200 r / min) on the control center panel; before the additive is added, it is connected to the existing metering pump through the external connecting pipe 43. The metering pump pumps the external additive into the additive storage tank 41 according to the preset amount of the control center. When adding, the opening of the control valve is adjusted through the touch screen of the control center; after the stirring is completed, the discharge valve of the discharge port of the stirring tank 31 is opened, the existing hose pump is started, and the lemon jam is pumped into the subsequent sterilization equipment through the food-grade silicone hose. Throughout the process, the operation of each existing device follows its conventional operating procedures and works in conjunction with this device to complete the lemon jam preparation process.

[0055] like Figures 5-8 As shown, the control center 5 includes a main control module, which is electrically connected to a motor drive module, a valve control module, and a status acquisition module. The motor drive module is electrically connected to the conveyor motor 22 and the stirring motor 33, respectively. The valve control module is electrically connected to the control valve of the additive addition component 4. The status acquisition module includes a current sensor and a position sensor. The current sensor is connected in series with the conveyor motor 22 and the stirring motor 33 to collect the motor operating current. The position sensor is located at the valve stem of the control valve to collect the valve opening position. The control center 5 also includes a communication module, which is electrically connected to the main control module. The communication module uses RS485 or wireless WiFi communication to interact with external terminal devices. The main control module uses a microcontroller or PLC controller and has a preset stirring parameter adjustment program, which can automatically adjust the speed of the conveyor motor 22, the speed of the stirring motor 33, and the opening of the control valve based on the feedback data from the status acquisition module.

[0056] In this implementation scheme, the main control module, as the core of the control center 5, outputs adapted drive signals through the motor drive module to precisely control the start, stop, and speed of the conveying motor 22 and the stirring motor 33. The valve control module receives instructions from the main control module and adjusts the opening and closing of the control valves to control the additive addition rate. The current sensor of the status acquisition module monitors the operating current of the two motors in real time. If the current is abnormal, it feeds back to the main control module. The position sensor acquires the opening data of the control valves in real time and synchronizes it to the main control module to achieve closed-loop control of each actuator. The communication module can send the device's operating parameters (such as motor speed, valve opening, current value, etc.) to external terminal devices, and can also receive control commands issued by terminal devices. The main control module dynamically adjusts the operating parameters of each component through a preset stirring parameter adjustment program and the feedback data from the status acquisition module. For example, when the raw material conveying volume increases, causing the current of the conveying motor 22 to rise, the speed of the conveying motor 22 is automatically reduced and the speed of the stirring motor 33 is increased simultaneously to ensure the uniformity of stirring and improve the intelligence and automation level of the device.

[0057] Specifically, in the use of control center 5, if the main control module adopts a PLC controller, a Siemens S7-1200 series PLC can be selected. It needs to be paired with an existing 24V DC switching power supply to power each module. The switching power supply can be MEANWELL LRS-50-24 model. The motor drive module needs to be used with existing electromagnetic relays. The relays can be Omron G2R series to realize the on / off protection of the motor circuit. The current sensor of the status acquisition module can be the Hall current sensor ACS712 series, and the position sensor can be a potentiometer sensor such as the WDD35D series. The analog signals acquired by the two need to be converted by an existing A / D conversion module (such as Siemens SM1231 module) before being transmitted to the main control module. If the communication module adopts RS485, it needs to be connected to the external terminal through an existing RS485 to USB converter. The converter can be Yutai UT-2022 model. At the same time, the control center needs to be equipped with an existing cooling fan (such as ADDA12025 model), installed at the ventilation opening of the control center shell to avoid the module's operational stability being affected by high temperature.

[0058] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A multi-paddle mixing device for uniformly mixing and blending lemon jam, comprising an outer frame, characterized in that, The outer frame is provided with a conical screen assembly (1), a screw conveyor assembly (2), a mixing tank assembly (3), and an additive addition assembly (4) connected to one side of the mixing tank assembly (3) in sequence from top to bottom. The conical screening assembly (1) includes a conical screening hopper (11), the top of which is provided with an open top cover, and the bottom of which is connected to a discharge pipe (12) for conveying materials. The spiral conveying assembly (2) includes a spiral conveying pipe (21), which is provided with a spiral conveying shaft. One end of the spiral conveying shaft is connected to a conveying motor (22) that drives it to rotate. One end of the spiral conveying pipe (21) is connected to the discharge pipe (12) of the screen hopper (11) through a pipe, and the other end is connected to the mixing tank assembly (3) through a pipe. The mixing tank assembly (3) includes a mixing tank body (31), the top of the mixing tank body (31) is provided with a feed port that communicates with the screw conveyor assembly (2), the bottom of the mixing tank body (31) is provided with a discharge port, the mixing tank body (31) is provided with a multi-blade mixing mechanism (32) inside the mixing tank body (31), the multi-blade mixing mechanism (32) includes a mixing motor (33), the output shaft of the mixing motor (33) extends into the mixing tank body (31) and is connected to a mixing shaft, and a plurality of mixing blades (34) are arranged axially at intervals on the mixing shaft; The additive addition component (4) includes an additive storage tank (41), the bottom of which is connected to an addition pipe (42), and the addition pipe (42) is provided with a control valve. The end of the addition pipe (42) away from the additive storage tank (41) is connected to the inlet side wall of the mixing tank (31). The outer frame is fixedly connected to a control center (5) that controls the conical screen assembly (1), the screw conveyor assembly (2), the mixing tank assembly (3), and the additive addition assembly (4).

2. The multi-paddle mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The top cover opening of the sieve hopper (11) is provided with a detachable screen (13). The screen (13) is fitted with an openable outer shell (14) placed above the top cover of the sieve hopper (11). One side of the openable outer shell (14) is connected to a hot air blower (6) placed inside the outer frame through a hot air pipe (15). The screen hopper (11) is fixedly connected to a number of support legs (16), which are fixedly connected inside the outer frame.

3. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The spiral conveying pipe (21) is inclined, and its lower horizontal end is connected to the discharge pipe (12), which facilitates more efficient initial dispersal before input into the mixing tank assembly (3); The discharge pipe (12) is detachably sealed at both ends through sealing flanges.

4. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The stirring paddle (34) is a blade-type stirring paddle, and multiple stirring paddles (34) are spirally distributed on the stirring shaft.

5. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The additive storage tank (41) is provided with multiple external connecting pipes (43) below it. The external connecting pipes (43) are used to connect to external water sources or other additives. The external connection port of the external connecting pipe (43) is located at the end with the horizontal height, which facilitates the slow mixing of the additive with the additive inside the additive storage tank (41) after pressurization and transportation through the addition pipe (42).

6. The multi-paddle mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The control center (5) controls the start and stop of the conveying motor (22) and its speed, the start and stop of the stirring motor (33) and its speed, and the opening and closing of the control valves in the additive addition component (4). It can also receive feedback on the operating status of each component to realize the automated operation of the device.

7. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 1, characterized in that, The control center (5) includes a main control module, which is electrically connected to a motor drive module, a valve control module and a status acquisition module. The motor drive module is electrically connected to the conveying motor (22) and the stirring motor (33), and the valve control module is electrically connected to the control valve of the additive addition component (4).

8. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 7, characterized in that, The status acquisition module includes a current sensor and a position sensor. The current sensor is connected in series with the conveying motor (22) and the stirring motor (33) to collect the motor operating current. The position sensor is located at the valve stem of the control valve to collect the valve opening position.

9. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 7, characterized in that, The control center (5) also includes a communication module, which is electrically connected to the main control module. The communication module uses RS485 or wireless WiFi communication to interact with external terminal devices.

10. The multi-blade mixing device for uniformly mixing and blending lemon jam according to claim 7, characterized in that, The main control module adopts a microcontroller or PLC controller. The main control module has a preset stirring parameter adjustment program, which can automatically adjust the speed of the conveyor motor (22), the speed of the stirring motor (33) and the opening degree of the control valve according to the feedback data of the status acquisition module.

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