Anti-fouling plate evaporator

Abstract

The utility model belongs to plate type evaporator technical field, concretely relates to a kind of anti-fouling plate type evaporator, including plate type evaporator main body and the multiple heat exchange plates of plate type evaporator main body installation on plate type evaporator main body, scale removal mechanism is installed on the outside of plate type evaporator main body, scale removal mechanism includes the load plate installed on the top of plate type evaporator main body by lifting assembly.The utility model synchronously transmits vibration to shock column through first connecting plate, then synchronously acts on each heat exchange plate by transmission head on shock column, realizes that multiple heat exchange plates obtain vibration cleaning simultaneously, avoid the intermittent defect of another part of partial area cleaning when fouling, simultaneously, each heat exchange plate both sides are equipped with multiple transmission heads, vibration energy is input from heat exchange plate both sides simultaneously rather than single center point, can evenly cover heat exchange plate outer wall, to reduce the edge cleaning blind area caused by energy transmission attenuation, improve cleaning effect, efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate evaporators, specifically relating to an anti-scaling plate evaporator. Background Technology

[0002] Plate evaporators are a new type of energy-saving evaporation equipment that uses metal plates as the main heat transfer elements. They achieve counter-current heat transfer through alternating material channels and heating channels, significantly reducing the amount of heating steam used.

[0003] When processing materials with high solute concentrations, high calcium and magnesium ion concentrations, or heat-sensitive materials such as traditional Chinese medicine extracts, saline wastewater, and fruit juices, scale can easily form between the plates due to the precipitation of solutes and the denaturation of heat-sensitive components caused by heating. The scale layer affects thermal conductivity during operation, thus reducing heat exchange efficiency. To reduce scale formation, some companies or individuals have developed an anti-scaling plate evaporator.

[0004] A search revealed a Chinese patent, CN222238780U, for a plate-type MVR evaporator. Its core components include a frame, motor, threaded shaft, top slider, condenser plate, center frame, pressure rod, and third spring. During operation, the motor drives the threaded shaft at the end of the main shaft to rotate, causing the outer top slider to move within the groove of the center frame. This continuously lifts the condenser plate on the support frame, causing it to vibrate between the pressure rod and the support frame. The protruding structure on the top slider pushes the upper condenser plate, pushing the pressure rod upwards, which in turn pushes the telescopic shaft to retract. Simultaneously, it compresses and deforms the outer third spring, controlling the condenser plate to vibrate sequentially. This vibration at different positions rubs away scale buildup between the condenser plates, cleaning away the adhered parts, maintaining cleanliness between the condenser plates, ensuring proper steam exchange, and extending the evaporator's service life.

[0005] The aforementioned existing technologies improve the scaling problem through vibration cleaning, but there is still room for optimization in practical applications. For example, only when the top slider moves under a certain condenser plate can it apply an upward thrust and cause vibration. The condenser plates that are not pushed are in a relatively static state, resulting in a time difference in the vibration of different condenser plates. At any given moment, only some condenser plates are vibrating, making the overall cleaning process intermittent. When the top slider is working in the left area, the condenser plate on the right may have already started to re-scale, reducing cleaning efficiency. In addition, the contact between the top slider and the condenser plate is single-point. The vibration energy gradually attenuates as it is transmitted from the contact point to the edge of the condenser plate. The vibration intensity is high in the central area of ​​the condenser plate and weak in the edge area, forming an uneven phenomenon of strong in the center and weak at the edge. Scale tends to accumulate in areas with slower flow rates, such as the edges and corners of the condenser plate. Insufficient vibration makes it difficult to effectively remove scale, and long-term accumulation will still affect the heat exchange efficiency. Utility Model Content

[0006] The purpose of this invention is to provide an anti-scaling plate evaporator that can apply uniform vibration force with completely consistent frequency, amplitude, and direction of action to both sides of each heat exchange plate, thereby improving the descaling effect.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A scale-resistant plate evaporator includes a plate evaporator body and multiple heat exchange plates installed on the plate evaporator body. A descaling mechanism is installed on the outside of the plate evaporator body. The descaling mechanism includes a support plate installed above the plate evaporator body via a lifting assembly. The lifting assembly includes a control host and two linear drive actuators electrically connected to the control host. The two linear drive actuators are respectively fixed on both sides of the bottom of the support plate.

[0009] A U-shaped plate frame is installed below the support plate via an isolation assembly. The isolation assembly includes four vibration isolation springs, which are located at the four corners of the bottom of the support plate. The bottom of the vibration isolation springs is fixed to the U-shaped plate frame, and the top of the vibration isolation springs is fixed to the support plate.

[0010] A unidirectional horizontal vibration motor is installed on the top of the U-shaped plate frame. First connecting plates are fixed on both sides of the bottom of the bearing plate. A movable groove is opened on the top of the U-shaped plate frame. The first connecting plate passes through the inner side of the movable groove. Two guide plates are installed on the inner side of the U-shaped plate frame and on both sides of the heat exchange plate. The two guide plates are connected by a second connecting plate. The upper guide plate is fixed to the first connecting plate. Vibration transmission columns, the same number as the heat exchange plate, are slidably connected inside the guide plate. One end of the vibration transmission column is fixed to the U-shaped plate frame, and the other end of the vibration transmission column is fixed with a transmission head, which abuts against the heat exchange plate.

[0011] The vibration transmission columns on the two first connecting plates on the same side are respectively set at the upper center position and the lower center position along the length direction of the heat exchange plate.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This invention transmits vibration synchronously to the vibration transmission column via the first connecting plate, and then acts synchronously on each heat exchange plate through the transmission head on the vibration transmission column. This allows multiple heat exchange plates to be cleaned by vibration at the same time, avoiding the intermittent defect of cleaning some areas while others are already scaled. At the same time, each heat exchange plate has multiple transmission heads on both sides, so the vibration energy is input from both sides of the heat exchange plate at the same time instead of a single center point. This can evenly cover the outer wall of the heat exchange plate, thereby reducing the edge cleaning blind spots caused by energy transmission attenuation and improving the cleaning effect and efficiency. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the separation of the support plate and the main body of the plate evaporator in this utility model;

[0016] Figure 3 This is a schematic diagram showing the separation of the load-bearing plate and the U-shaped frame in this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Plate evaporator body; 2. Heat exchange plate; 3. Support plate; 4. U-shaped plate frame; 5. Unidirectional horizontal vibration motor; 6. First connecting plate; 7. Guide plate; 8. Second connecting plate; 9. Vibration transmission column; 10. Spring; 11. Transmission head; 12. Movable groove; 13. Vibration isolation spring; 14. Linear drive actuator. Detailed Implementation

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0021] like Figure 1-4 As shown, an anti-scaling plate evaporator includes a plate evaporator body 1 and a descaling mechanism;

[0022] The plate evaporator body 1 described above is a mature existing technology. The plate evaporator body 1 consists of multiple heat exchange plates 2, sealing elements for sealing between the multiple heat exchange plates 2, bolts and nuts for tightly clamping and fixing the multiple heat exchange plates 2, a frame for supporting the heat exchange plates 2, a pipeline system for conveying the liquid and heat transfer medium so that the material and heat transfer medium can flow along a predetermined path during operation, and a control system for monitoring and controlling parameters such as temperature and pressure. These components will not be described in detail in this embodiment. The core solution of this technical solution lies in the specific structure of the descaling mechanism.

[0023] The descaling mechanism includes a support plate 3 mounted on top of the plate evaporator body 1 via a lifting assembly;

[0024] See attached document Figure 1The lifting assembly includes a control host and two linear drive actuators 14. The two linear drive actuators 14 are fixed on both sides of the bottom of the support plate 3, with one linear drive actuator 14 close to the front edge of the support plate 3 and the other linear drive actuator 14 close to the rear edge of the support plate 3.

[0025] When it is necessary to maintain the plate evaporator body 1, the bolts and nuts used to clamp the multiple heat exchange plates 2 are removed, and then the linear drive actuator 14 is started by the control host to move the support plate 3 and the components installed on the support plate 3 upward. Then the plate evaporator body 1 can be maintained. The position setting of the linear drive actuator 14 can avoid the linear drive actuator 14 from obstructing the maintenance and replacement of the components on the plate evaporator body 1.

[0026] See attached document Figure 2 , 3 and attached Figure 4 A U-shaped plate frame 4 is installed below the bearing plate 3 via an isolation component, and a unidirectional horizontal vibration motor 5 is installed on the top of the U-shaped plate frame 4.

[0027] The isolation assembly includes four vibration isolation springs 13 installed between the support plate 3 and the U-shaped frame 4. The four vibration isolation springs 13 are located at the four bottom corners of the support plate 3 and the four top corners of the U-shaped frame 4, respectively. The bottom of the vibration isolation springs 13 is fixed to the U-shaped frame 4, and the top of the vibration isolation springs 13 is fixed to the support plate 3. Through the arrangement of the four vibration isolation springs 13, the U-shaped frame 4 can be supported, reducing the impact of the vibration generated by the unidirectional horizontal vibrating motor 5 on the support plate 3 when it is working, while ensuring the normal vibration function of the unidirectional horizontal vibrating motor 5.

[0028] Both sides of the bottom of the bearing plate 3 are fixed with first connecting plates 6. The top of the U-shaped plate frame 4 is provided with a movable groove 12. The first connecting plate 6 passes through the inner side of the movable groove 12. Two horizontally arranged guide plates 7 are installed on the inner side of the U-shaped plate frame 4 and on both sides of the heat exchange plate 2. The two guide plates 7 are connected by a second connecting plate 8. The upper guide plate 7 is fixed to the first connecting plate 6. Multiple guide grooves are provided inside the guide plate 7. Vibration transmission columns 9 are installed on the guide plate 7 and inside the guide grooves. The vibration transmission columns 9 and the guide plate 7 are slidably connected by the guide grooves.

[0029] The number of vibration transmission columns 9 is the same as the number of heat exchange plates 2. One end of the vibration transmission column 9 is fixed to the U-shaped plate frame 4, and the other end of the vibration transmission column 9 is fixed with a transmission head 11, and the transmission head 11 abuts against the heat exchange plate 2.

[0030] The unidirectional horizontal vibrating motor 5 and the linear drive actuator 14 mentioned above are both electrically connected to the control host. The control host, the linear drive actuator 14 and the unidirectional horizontal vibrating motor 5 are all existing mature technologies. The linear drive actuator 14 can be selected from one of the following: hydraulic cylinder, air cylinder or lifting motor, and is used to drive the bearing plate 3 to achieve lifting action.

[0031] The unidirectional horizontal vibrating motor 5 is set horizontally parallel to the outer wall of the heat exchange plate 2. The vertical line of the center of gravity of the unidirectional horizontal vibrating motor 5 coincides with the horizontal center axis of the bearing plate 3 and the U-shaped plate frame 4. When the vibration energy is transmitted to the vibration transmission column 9 through the U-shaped plate frame 4, the guide groove restricts the vibration transmission column 9 to only move back and forth slightly in the horizontal direction, so as to realize the horizontal impact vibration of the transmission head 11 on the outer wall of the heat exchange plate 2. Even if there is a slight additional vibration of the unidirectional horizontal vibrating motor 5, it will be canceled by the guidance of the guide plate 7.

[0032] The transmission head 11 has a cylindrical structure and is made of stainless steel. The surface is coated with a high-temperature resistant ceramic coating. Compared with spherical or other irregular structures, the cylindrical transmission head 11 can improve the concentration of vibration energy transmission when it comes into contact with the heat exchange plate 2, and reduce the risk of damage to the outer wall of the heat exchange plate 2.

[0033] The diameter of the drive head 11 is smaller than the width of the heat exchange plate 2, which reduces the dispersion of vibration energy caused by the excessive size of the drive head 11.

[0034] Reference Appendix Figure 2 , 3 and attached Figure 4 In addition, the vibration transmission columns 9 on the two first connecting plates 6 on the same side are respectively set at the upper center position and the lower center position of the heat exchange plate 2 along the length direction, so that the transmission head 11 can evenly transmit the vibration energy to the upper and lower areas along the length direction of the heat exchange plate 2, reducing the uneven local force on the heat exchange plate 2 caused by the vibration.

[0035] When in use: Start the plate evaporator body 1, and the heat transfer medium is introduced into the internal channel of the heat exchange plate 2. The temperature gradually reaches the working state and the material begins to be concentrated and evaporated.

[0036] The unidirectional horizontal vibrating motor 5 is started. The vibration energy generated by the unidirectional horizontal vibrating motor 5 is transmitted to the vibration transmission column 9 through the U-shaped plate frame 4. The vibration transmission column 9 transmits the vibration to the outer wall of the heat exchange plate 2 through the transmission head 11. Due to the position setting of the vibration transmission column 9 and the transmission head 11, the vibration energy can evenly cover the heat exchange plate 2, destroy the adhesion between the scale layer and the outer wall of the heat exchange plate 2, and reduce the scale layer adhesion. In addition, the uniform vibration can break the static liquid film, so that the material generates forced convection, allowing the low temperature material to continuously contact the heating surface and the high temperature material to move away quickly, reducing the heat transfer resistance. At the same time, the vibration can disperse the bubbles near the heating surface, such as the water vapor generated by evaporation, to prevent the bubbles from accumulating and forming a gas film to isolate the heat, thus shortening the overall evaporation time.

[0037] In summary, this invention transmits vibration energy synchronously to the vibration transmission column 9 via the first connecting plate 6, and then acts synchronously on each heat exchange plate 2 via the transmission head 11 on the vibration transmission column 9. This allows multiple heat exchange plates 2 to be cleaned by vibration simultaneously, avoiding the intermittent defects where some areas are cleaned while others are already scaled. In addition, each heat exchange plate 2 has multiple transmission heads 11 on both sides, so the vibration energy is input simultaneously from both sides of the heat exchange plate 2 instead of a single central point. This allows for uniform coverage of the outer wall of the heat exchange plate 2, thereby avoiding edge cleaning blind spots caused by energy transmission attenuation and improving cleaning effect and efficiency.

[0038] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A plate evaporator with anti-scaling properties, comprising a plate evaporator body (1) and a plurality of heat exchange plates (2) installed on the plate evaporator body (1), characterized in that: A descaling mechanism is installed on the outside of the plate evaporator body (1). The descaling mechanism includes a support plate (3) installed above the plate evaporator body (1) via a lifting assembly. A U-shaped plate frame (4) is installed below the support plate (3) via an isolation assembly. A unidirectional horizontal vibration motor (5) is installed on the top of the U-shaped plate frame (4). First connecting plates (6) are fixed on both sides of the bottom of the support plate (3). A movable groove (12) is opened on the top of the U-shaped plate frame (4). The first connecting plate (6) penetrates the inner side of the movable groove (12). Two guide plates (7) are installed on the inner side of the U-shaped plate frame (4) and on both sides of the heat exchange plate (2). The two guide plates (7) are connected by a second connecting plate (8). The upper guide plate (7) is fixed to the first connecting plate (6). The guide plate (7) has a sliding connection with the same number of vibration transmission columns (9) as the heat exchange plate (2). One end of the vibration transmission column (9) is fixed to the U-shaped plate frame (4), and the other end of the vibration transmission column (9) is fixed with a transmission head (11). The transmission head (11) abuts against the heat exchange plate (2).

2. The anti-scaling plate evaporator according to claim 1, characterized in that: The vibration transmission columns (9) on the two first connecting plates (6) on the same side are respectively set at the upper center position and the lower center position of the heat exchange plate (2) along the length direction.

3. The anti-scaling plate evaporator according to claim 1, characterized in that: The lifting assembly includes a control host and two linear drive actuators (14) electrically connected to the control host. The two linear drive actuators (14) are respectively fixed on both sides of the bottom of the support plate (3).

4. The anti-scaling plate evaporator according to claim 1, characterized in that: The isolation assembly includes four vibration isolation springs (13), which are located at the four corners of the bottom of the support plate (3). The bottom of the vibration isolation springs (13) is fixed to the U-shaped plate frame (4), and the top of the vibration isolation springs (13) is fixed to the support plate (3).

5. The anti-scaling plate evaporator according to claim 1, characterized in that: The transmission head (11) is cylindrical, and the diameter of the transmission head (11) is smaller than the width of the heat exchange plate (2).

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