A high-efficiency vacuum pressure reducing and flow stabilizing device and control method for evaporators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-02
- Publication Date
- 2026-08-14
AI Technical Summary
[0015]本发明的有益效果在于：该蒸发器用高效真空减压稳流装置及控制方法，通过负压吸力能够拉动缓压板运动的情况下，缩小缓压罐的体积，即缩小蒸发器罐体内部空间，减少蒸发器罐体内部的压强，能够稳定蒸发器罐体的压强，其还能够不受到罐体内的负压环境影响。并且在缓压罐内部被缓压板完全挤压时，能够自动感应，并将蒸汽自动补入至缓压罐内，补入过程两道闸门迅速交替打开和关闭，补入速度较快，且在补入完成后，能够迅速的将闸门进行切换。
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Figure CN122558094A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of evaporator steam pressure regulation technology, specifically to a high-efficiency vacuum pressure reducing and flow stabilizing device and control method for evaporators. Background Technology
[0002] Evaporators designed for heat-sensitive materials have an input steam temperature of 55–110°C and a steam pressure of -0.02–-0.08 MPa. The high-vacuum operation can be adapted to lower temperature heat sources, ensuring that the material temperature remains below the critical temperature throughout the process, thus preserving the material's activity and quality.
[0003] To reduce the condensation of steam into cooling water within the evaporator tank, a water-ring vacuum pump is used to create a vacuum inside the tank. This pump relies on periodic volume changes to complete the intake, compression, and exhaust processes, continuously extracting air and non-condensable gases from the evaporator system. This stabilizes and maintains a low-temperature negative pressure vacuum environment, serving as the core negative pressure power source for the entire low-temperature steam flow stabilization process. A flow valve is installed at the steam inlet to stabilize the flow and ensure the amount of steam entering the tank, thus maintaining a vacuum environment within the tank.
[0004] However, although the water ring vacuum pump can continuously extract gas, its intake volume is constant. Although the steam temperature is regulated by the buffer tank, the temperature of the heat transfer tubes in the evaporator changes with the material temperature. This temperature change alters the steam consumption. Once the steam consumption increases, the pressure inside the evaporator tank will increase. This pressurization will lead to an increase in the material side pressure in the evaporator cavity, which will directly and significantly weaken heat exchange and disrupt the operating conditions. In order to stabilize the pressure, it is necessary to design a high-efficiency vacuum pressure reducing and flow stabilizing device and control method for the evaporator, which can stabilize the pressure in the evaporator tank and is not affected by the negative pressure environment inside the tank. Summary of the Invention
[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a high-efficiency vacuum pressure reduction and flow stabilization device and control method for evaporators, which can stabilize the pressure of the evaporator tank and is not affected by the negative pressure environment inside the tank.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a high-efficiency vacuum pressure reducing and flow stabilizing device and control method for evaporators, including a pressure reducing tank, a pressure reducing plate, a pulling mechanism, and a friction mechanism. A pressure regulating hole connected to the air inlet of the pressure reducing tank is provided on the side wall of the evaporator tank. A sealing plate is provided on one side of the air outlet of the pressure reducing tank. A steam inlet and a steam outlet are provided on the sealing plate. Both the steam inlet and the steam outlet are provided with gate mechanisms capable of opening, closing, and shutting themselves off. Both the steam inlet and the steam outlet are connected to a steam source. The pressure relief plate is horizontally slidable inside the pressure relief tank, dividing the interior of the tank into a pressure relief chamber on the left and a steam storage chamber on the right. Multiple air inlets are provided on the pressure relief plate, and a sealing plate covers these inlets. The sealing plate is horizontally slidable on the pressure relief plate via a guide post, which extends out of the pressure relief tank. A friction mechanism contacts and rubs against the guide post. A pulling mechanism is installed on the pressure relief tank to push and pull the pressure relief plate within the tank. A limit ring is fixedly installed on the guide post.
[0007] Preferably, the pulling mechanism includes a displacement tube, a contact plate, and an electric push rod. The end of the displacement tube passes through the sealing plate and is fixedly connected to the sealing plate. The displacement tube is horizontally slidably mounted on the sealing plate. A strip groove is formed on the displacement tube. The contact plate is located inside the displacement tube and its end extends out of the strip groove. The output end of the electric push rod is fixedly connected to the electric push rod. A pressure sensor is provided on the contact plate to contact the right side wall of the strip groove. When the displacement tube is in the initial position, one side of the contact plate contacts the left side wall of the strip groove. When the pressure relief plate moves to the preset position, the other side of the contact plate contacts the right side wall of the strip groove through the pressure sensor.
[0008] Preferably, a sealing ring is provided on the outer edge of the pressure relief plate, and the outer edge contour of the sealing ring has a wavy structure.
[0009] Preferably, the gate mechanism further includes a gate plate, a transmission column, a sliding column, and a spring. The transmission column is horizontally slidably mounted on the pressure relief plate. One end of the transmission column contacts the contact plate, and the other end of the transmission column is rotatably connected to the sliding column. The sliding column is slidably mounted on the gate plate along its length. The gate plate is rotatably mounted on one side of the pressure relief plate. The spring provides an elastic force to the transmission column close to the contact plate.
[0010] Preferably, guide posts are fixedly installed on both sides of the sliding column, and a guide plate is fixedly installed on the gate plate, with the guide posts and guide plates slidably connected.
[0011] Preferably, a retaining ring is fixedly installed on the upper part of the transmission column, one side of the first spring abuts against one side of the sealing plate, and the other side of the first spring abuts against the retaining ring.
[0012] Preferably, the friction mechanism includes an arc-shaped friction plate, an elastic compression mechanism, a third guide post, a guide seat, and a second spring. The third guide post is horizontally slidably mounted on the guide seat. The arc-shaped friction plate is fixedly mounted on one end of the two third guide posts. The elastic compression mechanism is fixedly mounted on the guide seat. The elastic compression mechanism is used to apply a compressive force to the second spring. One side of the arc-shaped friction plate is in contact with the transmission column. The second spring is used to apply an elastic force toward the transmission column to the arc-shaped friction plate.
[0013] Preferably, the elastic compression mechanism includes a compression plate and a screw. The compression plate is slidably mounted on two guide posts, and the screw is engaged with the guide seat, with one end of the screw abutting against the compression plate.
[0014] A control method for a high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator, characterized by comprising the following steps: Step 1: The internal pressure of the evaporator tank increases, and a negative pressure suction force is formed inside the pressure relief tank through the pressure regulation hole, which attracts the pressure relief plate to slide horizontally to one side of the evaporator tank. Step 2: The pressure relief plate drives the displacement tube to move synchronously. When the groove wall of the strip on the displacement tube contacts the pressure sensor on the contact plate and triggers the pressure signal, the control system starts the electric push rod. Step 3: The electric push rod drives the contact plate to pull the displacement tube and the pressure relief plate away from the evaporator tank. The friction mechanism applies frictional resistance to the guide column, causing the sealing plate to slide relative to the pressure relief plate and the air inlet to open. At the same time, the contact plate drives the transmission column and the sliding column to rotate the gate plate. The gate mechanism simultaneously closes the steam inlet and steam outlet. The steam in the steam storage chamber flows into the pressure relief chamber through the air inlet, completing the internal pressure regulation of the evaporator tank. Step 4: After the steam pressure adjustment is completed, the control system controls the electric push rod to reverse and reset, and pushes the contact plate. At the end of the reset stroke, the electric push rod drives the displacement tube and the pressure relief plate to move back synchronously. Step 5: The friction mechanism continuously applies frictional resistance to the guide column, causing the sealing plate to re-cover and block the air inlet on the pressure relief plate; at the same time, the transmission column is reset under the elastic force of the spring, driving the gate to rotate in the opposite direction, and the gate mechanism reopens the steam inlet and steam outlet, and the device returns to the initial standby state.
[0015] The beneficial effects of this invention are as follows: The evaporator uses a high-efficiency vacuum pressure reduction and flow stabilization device and control method. By using negative pressure suction to pull the pressure-reducing plate, the volume of the pressure-reducing tank is reduced, thus reducing the internal space of the evaporator tank and decreasing the internal pressure. This stabilizes the pressure within the evaporator tank and prevents it from being affected by the negative pressure environment inside the tank. Furthermore, when the pressure-reducing plate completely compresses the inside of the tank, it can automatically sense this and automatically replenish steam into the tank. During the replenishment process, two gates rapidly and alternately open and close, resulting in a fast replenishment speed. After replenishment is complete, the gates can be quickly switched. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a cross-sectional view of the connection state of the present invention.
[0018] Figure 2 This is a partial front view of the evaporator tank.
[0019] Figure 3 for Figure 1 A magnified view of part A.
[0020] Figure 4 This is a three-dimensional structural diagram of the present invention.
[0021] Figure 5 This is a partial three-dimensional structural diagram of the present invention.
[0022] Figure 6 This is a schematic diagram of the separation structure of the sealing plate and the pressure relief plate.
[0023] Figure 7 This is a partial three-dimensional structural diagram of the pulling mechanism.
[0024] Figure 8 This is a three-dimensional structural diagram of the gate mechanism.
[0025] Figure 9 This is a three-dimensional structural diagram of the friction mechanism.
[0026] Explanation of reference numerals in the attached drawings: 1. Evaporator tank; 1a. Pressure regulating hole; 2. Heat transfer tube; 3. Pressure easing tank; 3a. Steam inlet; 3b. Steam outlet; 4. Pressure easing plate; 4a. Air inlet; 4b. Sealing ring; 5. Pull-and-shift mechanism; 5a. Displacement tube; 5a1. Strip groove; 5b. Contact plate; 5c. Electric push rod; 5d. Pressure sensor; 6. Gate mechanism; 6a. Gate plate; 6b. Transmission column; 6c. Sliding column; 6d. Spring 1; 6e. Guide column 2; 6f. Guide plate; 7. Friction mechanism; 7a. Arc-shaped friction plate; 7b. Elastic compression mechanism; 7b1. Extrusion plate; 7b2. Screw; 7c. Guide column 3; 7d. Guide seat; 7e. Spring 2; 8. Sealing plate; 8a. Guide column 1; 8b. Limiting ring. Detailed Implementation
[0027] 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.
[0028] Example: This invention provides a high-efficiency vacuum pressure reducing and flow stabilizing device and control method for evaporators, such as... Figure 1-9 As shown, the system includes a pressure-reducing tank 3, a pressure-reducing plate 4, a pulling mechanism 5, and a friction mechanism 7. The side wall of the evaporator tank 1 is provided with a pressure regulation hole 1a connected to the air inlet of the pressure-reducing tank 3. A sealing plate is provided on one side of the air outlet of the pressure-reducing tank 3. The sealing plate is provided with a steam inlet 3a and a steam outlet 3b. Both the steam inlet 3a and the steam outlet 3b are provided with a gate mechanism 6 capable of opening, closing, and shutting themselves. Both the steam inlet 3a and the steam outlet 3b are connected to a steam source. The pressure-reducing plate 4 is horizontally slidable inside the pressure-reducing tank 3. 4. The interior of the pressure-reducing tank 3 is divided into a pressure-reducing chamber on the left and a steam storage chamber on the right. Multiple air inlets 4a are provided on the pressure-reducing plate 4. A sealing plate 8 covers the multiple air inlets 4a. The sealing plate 8 is horizontally slidable on the pressure-reducing plate 4 via a guide post 8a, which extends out of the pressure-reducing tank 3. A friction mechanism 7 contacts and rubs against the guide post 8a. A pulling mechanism 5 is installed on the pressure-reducing tank 3 and is used to push and pull the pressure-reducing plate 4 within the pressure-reducing tank 3. A limit ring 8b is fixedly provided on the guide post 8a. When the pressure-reducing plate 4 is attracted by the increased pressure inside the evaporator tank 1, the pressure-reducing plate 4 will move towards the evaporator tank 1. During this process, the sealing plate 8 seals the air inlets 4a by adhering to the pressure-reducing plate 4. To avoid being attracted by the original pressure inside the evaporator tank 1, the friction resistance applied to the guide post 8a by the friction mechanism 7 counteracts its original pressure. When the pressure-reducing plate 4 is pulled to the preset position, the pulling mechanism 5 pulls the pressure-reducing plate 4 in the opposite direction. Because the guide post 8a is resisted by the friction mechanism 7, it moves away from the pressure-reducing plate 4, opening the air inlet 4a and allowing steam in the steam storage chamber to pass through the air inlet 4a and enter the pressure-reducing chamber. During the movement of the pressure-reducing plate 4, the gate mechanism 6 closes the steam inlet 3a and steam outlet 3b to prevent steam from being squeezed out along these pathways. After the squeezing is complete, the pressure-reducing plate 4 is pushed in the opposite direction, and the sealing plate 8, due to resistance, adheres to the pressure-reducing plate 4, thus completing the entire reset process.
[0029] After the sealing plate 8 and the pressure relief plate 4 move away from each other, the limiting ring 8b contacts the pressure relief plate 4, so that the pressure relief plate 4 can drive the sealing plate 8 to move together during subsequent movements. Figure 5This is the state when the sealing plate 8 and the pressure relief plate 4 are released. Figure 6 This is the state when the limiting ring 8b is in contact with the pressure relief plate 4.
[0030] To ensure that the pressure relief plate 4 can be attracted by negative pressure, and that the pulling mechanism 5 can pull the pressure relief plate 4 to move when it moves to the preset position, the pulling mechanism 5 includes a displacement tube 5a, a contact plate 5b, and an electric push rod 5c. The end of the displacement tube 5a passes through the sealing plate and is fixedly connected to the sealing plate 8. The displacement tube 5a can be horizontally slidably mounted on the sealing plate. A strip groove 5a1 is opened on the displacement tube 5a. The contact plate 5b is located inside the displacement tube 5a and its end extends out of the strip groove 5a1. The output end of the electric push rod 5c is fixedly connected to the electric push rod 5c. A pressure sensor 5d is provided on the contact plate 5b to contact the right side wall of the strip groove 5a1. When the displacement tube 5a is in the initial position, one side of the contact plate 5b contacts the left side wall of the strip groove 5a1. When the pressure relief plate 4 moves to the preset position, the other side of the contact plate 5b contacts the right side wall of the strip groove 5a1 through the pressure sensor 5d. After the pressure sensor 5d contacts the tank wall, the pressure signal is transmitted to the control. At this time, the pressure relief plate 4 moves to the preset position. Then, by controlling the electric push rod 5c, the contact plate 5b pulls the displacement tube 5a. The displacement tube 5a drives the pressure relief plate 4 away from the evaporator tank 1. After the movement is completed, the electric push rod 5c pushes in the opposite direction, so that the contact plate 5b moves along the strip groove 5a1 to reset. In the final movement stage, it will push the displacement tube 5a to move, so that the sealing plate 8 can cover the air inlet 4a.
[0031] When the pressure relief plate 4 is pulled by negative pressure, the movement of the displacement tube 5a will not be blocked by the contact plate 5b, so it can move.
[0032] The 5d pressure sensor uses a thin-film pressure sensor, which can also be replaced with other pressure sensors. There are no structural limitations; the only consideration is the impact of the thickness during installation on the stroke.
[0033] The outer edge of the pressure relief plate 4 is provided with a sealing ring 4b, and the outer edge of the sealing ring 4b has a wavy structure. This wavy structure can reduce the friction between it and the inner wall of the pressure relief tank 3, so that the friction can be controlled by the friction mechanism 7. At the same time, it is equivalent to forming a multi-seal structure to ensure its sealing performance.
[0034] To ensure that the two gate mechanisms 6 can close the steam inlet 3a and steam outlet 3b when the sealing plate 8 is open, the gate mechanism 6 also includes a gate plate 6a, a drive column 6b, a sliding column 6c, and a spring 6d. The drive column 6b is horizontally slidably mounted on the pressure relief plate 4. One end of the drive column 6b contacts the contact plate 5b, and the other end is rotatably connected to the sliding column 6c. The sliding column 6c is slidably mounted on the gate plate 6a along its length. The gate plate 6a is rotatably mounted on one side of the pressure relief plate 4. The spring 6d provides an elastic force to the drive column 6b near the contact plate 5b. When the contact plate 5b moves the displacement tube 5a, the spring 6d pushes the drive column 6b, causing the drive column 6b to simultaneously pull the sliding column 6c. The gate plate 6a rotates along with the sliding column 6c, closing the steam inlet 3a and steam outlet 3b. While the gate 6a rotates, the sliding column 6c slides along the length of the gate 6a to alleviate the movement. In this way, when the sealing plate 8 is open, the two gate mechanisms 6 can close the steam inlet 3a and the steam outlet 3b, ensuring the synchronization of equipment operation and allowing for frequent adjustment.
[0035] Guide posts 6e are fixedly installed on both sides of the sliding column 6c, and a guide plate 6f is fixedly installed on the gate 6a. The guide posts 6e and the guide plate 6f are slidably connected. When the sliding column 6c is pushed, the sliding column 6c can slide and adjust along the guide plate 6f through the guide posts 6e.
[0036] A retaining ring is fixedly installed on the upper part of the transmission column 6b. One side of the spring-6d abuts against one side of the sealing plate, and the other side of the spring-6d abuts against the retaining ring, which shows how the spring-6d applies an elastic thrust to the transmission column 6b.
[0037] The friction mechanism 7 includes an arc-shaped friction plate 7a, an elastic compression mechanism 7b, a guide post 7c, a guide seat 7d, and a spring 7e. The guide post 7c is horizontally slidably mounted on the guide seat 7d. The arc-shaped friction plate 7a is fixedly mounted on one end of the two guide posts 7c. The elastic compression mechanism 7b is fixedly mounted on the guide seat 7d and applies a compressive force to the spring 7e. One side of the arc-shaped friction plate 7a is in contact with the transmission post 6b, and the spring 7e applies an elastic force towards the transmission post 6b to the arc-shaped friction plate 7a. By applying an elastic compressive friction force to the transmission post 6b through the arc-shaped friction plate 7a, resistance is generated when the transmission post 6b moves. According to the consumption of friction force, the spring can be compressed by the elastic compression mechanism 7b, thereby increasing the thrust and changing the friction force of the arc-shaped friction plate 7a on the transmission post 6b.
[0038] The elastic compression mechanism 7b includes a compression plate 7b1 and a screw 7b2. The compression plate 7b1 is slidably mounted on two guide posts 7c, and the screw 7b2 is engaged with a guide seat 7d, with one end of the screw 7b2 abutting against the compression plate 7b1. By rotating and turning the screw 7b2, the screw 7b2 pushes the compression plate 7b1, thereby compressing the spring 7e.
[0039] A control method for a high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator includes the following steps: Step 1: The internal pressure of the evaporator tank 1 increases, and a negative pressure suction force is formed inside the pressure relief tank 3 through the pressure regulation hole 1a, which attracts the pressure relief plate 4 to slide horizontally to one side of the evaporator tank 1. Step 2: The pressure relief plate 4 drives the displacement tube 5a to move synchronously. When the groove wall of the strip groove 5a1 on the displacement tube 5a comes into contact with the pressure sensor 5d on the contact plate 5b and triggers the pressure signal, the control system starts the electric push rod 5c. Step 3: The electric push rod 5c drives the contact plate 5b to pull the displacement tube 5a and the pressure relief plate 4 away from the evaporator tank 1. The friction mechanism 7 applies frictional resistance to the guide column 8a, causing the sealing plate 8 to slide relative to the pressure relief plate 4 and the air inlet 4a to open. At the same time, the contact plate 5b, in conjunction with the transmission column 6b and the sliding column 6c, drives the gate plate 6a to rotate. The gate mechanism 6 simultaneously closes the steam inlet 3a and the steam outlet 3b. The steam in the steam storage chamber flows into the pressure relief chamber through the air inlet 4a, completing the internal pressure regulation of the evaporator tank 1. Step 4: After the steam pressure adjustment is completed, the control system controls the electric push rod 5c to reverse and reset and push the contact plate 5b. At the end of the reset stroke, the electric push rod 5c drives the displacement tube 5a and the pressure relief plate 4 to move back synchronously. Step 5: The friction mechanism 7 continuously applies frictional resistance to the guide post 8a, causing the sealing plate 8 to re-cover and seal the air inlet 4a on the pressure relief plate 4; at the same time, the transmission post 6b is reset under the elastic force of the spring 6d, driving the gate plate 6a to rotate in the opposite direction, and the gate mechanism 6 reopens the steam inlet 3a and steam outlet 3b, and the device returns to the initial standby state.
[0040] This evaporator employs a high-efficiency vacuum pressure reduction and flow stabilization device and control method. By using negative pressure suction to pull the pressure-reducing plate 4, the volume of the pressure-reducing tank 3 is reduced, thus shrinking the internal space of the evaporator tank 1 and decreasing the internal pressure. This stabilizes the pressure within the evaporator tank and prevents it from being affected by the negative pressure environment inside the tank. Furthermore, when the pressure-reducing plate 4 completely compresses the pressure-reducing tank 3, it automatically senses this and automatically replenishes steam into the tank 3. During the replenishment process, two gates rapidly and alternately open and close, resulting in a fast replenishment speed. After replenishment is complete, the gates can be quickly switched back.
[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator, characterized in that, The system includes a pressure-reducing tank (3), a pressure-reducing plate (4), a pulling mechanism (5), and a friction mechanism (7). The side wall of the evaporator tank (1) is provided with a pressure regulation hole (1a) connected to the air inlet of the pressure-reducing tank (3). A sealing plate is provided on one side of the air outlet of the pressure-reducing tank (3), with a steam inlet (3a) and a steam outlet (3b) provided on the sealing plate. Both the steam inlet (3a) and the steam outlet (3b) are equipped with gate mechanisms (6) capable of opening, closing, and shutting themselves. Both the steam inlet (3a) and the steam outlet (3b) are connected to a steam source. The pressure-reducing plate (4) is horizontally slidable inside the pressure-reducing tank (3). The pressure-reducing plate (4) will reduce the pressure... The interior of the pressure tank (3) is divided into a pressure-relieving chamber on the left and a steam storage chamber on the right. The pressure-relieving plate (4) is provided with multiple air inlets (4a). The sealing plate (8) covers the multiple air inlets (4a). The sealing plate (8) can be horizontally slidably installed on the pressure-relieving plate (4) through the first guide post (8a). The first guide post (8a) extends out of the pressure-relieving tank (3). The friction mechanism (7) contacts and rubs with the first guide post (8a). The pulling mechanism (5) is installed on the pressure-relieving tank (3). The pulling mechanism (5) is used to push and pull the pressure-relieving plate (4) to move inside the pressure-relieving tank (3). A limit ring (8b) is fixedly provided on the first guide post (8a).
2. The high-efficiency vacuum pressure reducing and flow stabilizing device for evaporators as described in claim 1, characterized in that, The pulling mechanism (5) includes a displacement tube (5a), a contact plate (5b), and an electric push rod (5c). The end of the displacement tube (5a) passes through the sealing plate and is fixedly connected to the sealing plate (8). The displacement tube (5a) can be horizontally slidably installed on the sealing plate. A strip groove (5a1) is provided on the displacement tube (5a). The contact plate (5b) is located inside the displacement tube (5a) and its end extends out of the strip groove (5a1). The output end of the electric push rod (5c) is fixedly connected to the electric push rod (5c). A pressure sensor (5d) is provided on the contact plate (5b) to contact the right side wall of the strip groove (5a1). When the displacement tube (5a) is in the initial position, one side of the contact plate (5b) contacts the left side wall of the strip groove (5a1). When the pressure relief plate (4) moves to the preset position, the other side of the contact plate (5b) contacts the right side wall of the strip groove (5a1) through the pressure sensor (5d).
3. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 2, characterized in that, The outer edge of the pressure relief plate (4) is provided with a sealing ring (4b), and the outer edge contour of the sealing ring (4b) has a wavy structure.
4. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 2, characterized in that, The gate mechanism (6) also includes a gate plate (6a), a transmission column (6b), a sliding column (6c), and a spring (6d). The transmission column (6b) is horizontally slidably mounted on the pressure relief plate (4). One end of the transmission column (6b) contacts the contact plate (5b), and the other end of the transmission column (6b) is rotatably connected to the sliding column (6c). The sliding column (6c) is slidably mounted on the gate plate (6a) along its length. The gate plate (6a) is rotatably mounted on one side of the pressure relief plate (4). The spring (6d) provides an elastic force to the transmission column (6b) close to the contact plate (5b).
5. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 4, characterized in that, Guide posts 2 (6e) are fixedly installed on both sides of the sliding column (6c), and guide plate (6f) is fixedly installed on the gate (6a). Guide posts 2 (6e) and guide plate (6f) are slidably connected.
6. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 5, characterized in that, A retaining ring is fixedly installed on the upper part of the transmission column (6b), one side of the spring (6d) abuts against one side of the sealing plate, and the other side of the spring (6d) abuts against the retaining ring.
7. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 1, characterized in that, The friction mechanism (7) includes an arc-shaped friction plate (7a), an elastic compression mechanism (7b), a guide post three (7c), a guide seat (7d), and a spring two (7e). The guide post three (7c) is horizontally slidably mounted on the guide seat (7d). The arc-shaped friction plate (7a) is fixedly mounted on one end of the two guide posts three (7c). The elastic compression mechanism (7b) is fixedly mounted on the guide seat (7d). The elastic compression mechanism (7b) is used to apply a compressive force to the spring two (7e). One side of the arc-shaped friction plate (7a) is in contact with the transmission post (6b). The spring two (7e) is used to apply an elastic force toward the transmission post (6b) to the arc-shaped friction plate (7a).
8. The high-efficiency vacuum pressure reducing and flow stabilizing device for an evaporator as described in claim 7, characterized in that, The elastic compression mechanism (7b) includes a compression plate (7b1) and a screw (7b2). The compression plate (7b1) is slidably mounted on two guide posts (7c), and the screw (7b2) is engaged on the guide seat (7d). One end of the screw (7b2) abuts against the compression plate (7b1).
9. A control method for a high-efficiency vacuum pressure reducing and stabilizing device for an evaporator according to claim 4, characterized in that, Includes the following steps: Step 1: The internal pressure of the evaporator tank (1) increases, and a negative pressure suction force is formed inside the pressure relief tank (3) through the pressure regulation hole (1a), which adsorbs the pressure relief plate (4) and slides horizontally to one side of the evaporator tank (1); Step 2: The pressure relief plate (4) drives the displacement tube (5a) to move synchronously. When the groove wall of the strip groove (5a1) on the displacement tube (5a) contacts the pressure sensor (5d) on the contact plate (5b) and triggers the pressure signal, the control system starts the electric push rod (5c). Step 3: The electric push rod (5c) drives the contact plate (5b) to pull the displacement tube (5a) and the pressure relief plate (4) to move away from the evaporator tank (1). The friction mechanism (7) applies frictional resistance to the guide column (8a), causing the sealing plate (8) to slide relative to the pressure relief plate (4) and the air inlet (4a) to open. At the same time, the contact plate (5b) drives the transmission column (6b) and the sliding column (6c) to rotate the gate plate (6a). The gate mechanism (6) simultaneously closes the steam inlet (3a) and the steam outlet (3b). The steam in the steam storage chamber flows into the pressure relief chamber through the air inlet (4a), completing the internal pressure regulation of the evaporator tank (1). Step 4: After the steam pressure adjustment is completed, the control system controls the electric push rod (5c) to reverse and push the contact plate (5b). At the end of the reset stroke, the electric push rod (5c) drives the displacement tube (5a) and the pressure relief plate (4) to move back synchronously. Step 5: The friction mechanism (7) continuously applies frictional resistance to the guide post (8a), causing the sealing plate (8) to re-cover the air inlet (4a) on the pressure relief plate (4); at the same time, the transmission post (6b) is reset under the elastic force of the spring (6d), driving the gate plate (6a) to rotate in the opposite direction, and the gate mechanism (6) reopens the steam inlet (3a) and steam outlet (3b), and the device returns to the initial standby state.