A boiler steam recovery system

Abstract

This utility model discloses a boiler steam recovery system, including a treatment tank and a tank cover. The treatment tank and the tank cover are connected by flange bolts. A bracket is welded to the inner wall of the treatment tank. A detachable separator is provided inside the treatment tank, and the separator is located above the bracket. An inclined plate is detachably connected to one side of the inner wall of the treatment tank, and the inclined plate is located above the separator. A bottom seal is bolted to the bottom of the treatment tank. The separator of this utility model adopts a hierarchical layout of "dense at the bottom and sparse at the top". The dense baffle spacing at the bottom, combined with the large-aperture filter frame, quickly separates large-diameter liquid droplets and tea leaves. The 30° inclined barb design of the inclined plate intercepts the granular surface before steam is discharged, further capturing residual liquid droplets. In addition, a detachable interface is provided for regular cleaning, which facilitates deep cleaning of areas prone to fouling, such as granular surfaces and baffle gaps.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of tea beverage processing equipment, specifically a boiler steam recovery system. Background Technology

[0002] Tea beverage processing refers to the process of using tea leaves as the main raw material and producing liquid beverages with tea flavor and certain nutritional functions through extraction, blending, sterilization, and bottling. Its core is to extract the effective components of tea leaves and stably integrate them into the beverage system, while meeting the safety, stability, and taste requirements of industrial production.

[0003] In the tea beverage processing industry, steam, as an important heat source, plays a crucial role in key stages such as extraction, sterilization, and blending heating. However, existing technologies have many shortcomings and urgently need improvement. Traditional steam recovery equipment often adopts a single separation structure, such as a simple flat baffle or filter screen, resulting in low separation efficiency and insufficient steam purity, which in turn affects the extraction of effective components and product quality during tea processing. At the same time, some equipment lacks a temperature control mechanism, and when the steam temperature is too high, the droplets are difficult to condense and separate, affecting the overall integrity. Utility Model Content

[0004] This utility model addresses the problem of overly simplistic existing technical solutions by providing a boiler steam recovery system. This system solves the problem mentioned in the background section that the single separation structure, such as a simple straight baffle or filter, cannot simultaneously separate large particles and tiny droplets, resulting in low separation efficiency and insufficient steam purity.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A boiler steam recovery system includes a treatment tank and a tank cover. The treatment tank and the tank cover are connected by flange bolts. A bracket is welded to the inner wall of the treatment tank. A detachably connected separator is provided inside the treatment tank. The separator is located above the bracket. An inclined plate is detachably connected to one side of the inner wall of the treatment tank. The inclined plate is located above the separator. A bottom seal is bolted to the bottom of the treatment tank.

[0007] The separator includes a first baffle plate, a second baffle plate, and a filter frame. The first baffle plate and the second baffle plate are symmetrically distributed. The filter frame is disposed below the first baffle plate, and one end of the filter frame is welded and fixed to the second baffle plate.

[0008] Furthermore, the processing tank has a double-layer metal tank structure with an inner and outer layer metal tank, and a closed jacket space is formed between the inner and outer metal tanks. The bracket, separator and inclined plate are all located inside the inner metal tank.

[0009] Furthermore, a steam discharge port and a condensate discharge port are respectively provided on one side of the outer wall of the treatment tank. The steam discharge port is located above the condensate discharge port and adjacent to the area above the inclined plate. A vapor-liquid mixing inlet is provided on one side of the condensate discharge port, with one end of its extension inclined and the pipe opening facing upward, and located below the bracket.

[0010] Furthermore, a steam discharge port and a condensate discharge port are respectively opened on one side of the outer wall of the treatment tank. The steam discharge port is located above the condensate discharge port and adjacent to the upper area of ​​the inclined plate. A vapor-liquid mixing inlet is opened on one side of the condensate discharge port, with one end of its extension inclined and the pipe opening facing upward, and located below the bracket.

[0011] Furthermore, a steam discharge port and a condensate discharge port are respectively opened on one side of the outer wall of the treatment tank. The steam discharge port is located above the condensate discharge port and adjacent to the upper area of ​​the inclined plate. A vapor-liquid mixing inlet is opened on one side of the condensate discharge port, with one end of its extension inclined and the pipe opening facing upward, and located below the bracket.

[0012] Furthermore, the first baffle and the second baffle are wavy and curved, with their higher ends adjacent to the inner wall of the processing tank, and a gap area formed between their lower ends. The surfaces of the first baffle and the second baffle have a rough granular structure.

[0013] Furthermore, a semi-circular slot is provided through one end of the surface of the bracket for the flow of gas and liquid, and a slot is provided on the solid surface of the other end for insertion with the rod below the separator. The bottom of the treatment tank has a pipe opening for removing impurities at the coaxial position with the bracket, and the rubber plug on the surface of the bottom seal is inserted and connected to the inner wall of the pipe opening.

[0014] The separator comprises a first baffle plate, a second baffle plate, and a filter frame. The first baffle plate and the second baffle plate are symmetrically distributed. The filter frame is disposed below the first baffle plate, and one end of the filter frame is welded and fixed to the second baffle plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The separator adopts a hierarchical layout of "dense at the bottom and sparse at the top". The densely spaced baffles at the bottom, combined with the large-pore filter frame, quickly separate large-diameter droplets and tea leaves. The increased spacing in the upper layer, combined with the rough particle surface, achieves fine filtration of tiny droplets by extending the steam residence time and adsorption. At the same time, the 30° inclined barb design of the inclined plate and the particle surface intercept the residual droplets before the steam is discharged.

[0017] 2. Cooling water at 25°C is introduced into the jacket layer to specifically cool and condense the droplets carried in the steam. Although the cooling water temperature is lower than the steam saturation temperature (100°C), by adjusting the flow rate and heat exchange intensity of the cooling medium, the droplets can be condensed only when they come into contact with the low-temperature tank wall. The main body of steam, because it flows inside the tank, is not cooled below the saturation temperature and can remain in a gaseous state, ensuring the output of dry steam and avoiding overall liquefaction. This meets the high-quality steam requirements of tea processing. In addition, the design of the separator and inclined plate takes into account the need to prevent scale buildup. It is equipped with a detachable interface for regular cleaning, which allows staff to perform deep cleaning of areas prone to scale buildup, such as particulate surfaces and baffle gaps. This effectively removes residual tea debris, microorganisms, and other contaminants, ensuring separation efficiency during long-term operation. The impurity discharge port at the bottom of the treatment tank is sealed with a rubber stopper and can be opened periodically to discharge settled impurities, avoiding blockage and contamination.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present utility model from the front view.

[0021] Figure 3 This is a schematic diagram of the separator structure of this utility model;

[0022] Numbering on the map:

[0023] 1. Processing tank; 101. Steam vent; 102. Condensate vent; 103. Vapor-liquid mixing inlet; 104. Medium outlet pipe; 105. Medium inlet pipe; 2. Tank cover; 3. Bracket; 4. Separator; 401. First baffle; 402. Second baffle; 403. Filter frame; 5. Inclined plate; 6. Bottom seal. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Please refer to the appendix carefully. Figure 1-3 A boiler steam recovery system includes a treatment tank 1 and a tank cover 2. The treatment tank 1 and the tank cover 2 are connected by flange bolts. A bracket 3 is welded to the inner wall of the treatment tank 1. A detachable separator 4 is provided inside the treatment tank 1. The separator 4 is located above the bracket 3. An inclined plate 5 is detachably connected to one side of the inner wall of the treatment tank 1. The inclined plate 5 is located above the separator 4. A bottom seal 6 is bolted to the bottom of the treatment tank 1.

[0027] The separator 4 includes a first baffle plate 401, a second baffle plate 402, and a filter frame 403. The first baffle plate 401 and the second baffle plate 402 are symmetrically distributed. The filter frame 403 is disposed below the first baffle plate 401, and one end of it is welded and fixed to the second baffle plate 402.

[0028] In this embodiment, as Figure 2 and Figure 3 As shown, the processing tank 1 has a double-layer metal tank structure with an inner and outer layer. A closed jacket space is formed between the inner and outer metal tanks. The bracket 3, separator 4 and inclined plate 5 are all located inside the inner metal tank. The surface of the inclined plate 5 is consistent with the surfaces of the first baffle plate 401 and the second baffle plate 402, and both have raised granular structures. The inclined plate 5 is inclined at 30° and its lower end is hooked.

[0029] Through the above structure, the inclined plate 5 adopts the same raised granular surface to form a continuous separation system. During the rising process of steam, terminal interception is achieved. Its tilt angle and the shape of the lower barb form an efficient droplet guiding system. The tilted surface allows the droplets after collision to slide down the plate surface quickly under the action of gravity, while the barb ensures that the droplets slide smoothly to the condensate collection area in the lower layer of the treatment tank 1, while avoiding the droplets returning to the steam flow and affecting the separation effect. The detachable structure of the separator 4 and the inclined plate 5 not only simplifies the process but also facilitates unified maintenance and reduces equipment management costs.

[0030] In this embodiment, as Figure 1 and Figure 2As shown, a steam discharge port 101 and a condensate discharge port 102 are respectively opened on one side of the outer wall of the treatment tank 1. The steam discharge port 101 is located above the condensate discharge port 102 and adjacent to the upper area of ​​the inclined plate 5. A vapor-liquid mixing inlet 103 is opened on one side of the condensate discharge port 102. One end of the inlet is inclined, with the pipe opening facing upward, and is located below the bracket 3.

[0031] With the above structure, the inclined plate 5 is set close to the steam discharge port 101, which can intercept the steam before it is discharged, capture residual droplets, and further improve the purity of the steam. The upward tilted design of the gas-liquid mixing inlet 103 can guide the gas-liquid mixture to rise along the bottom of the tank.

[0032] In this embodiment, as Figure 1 and Figure 2 As shown, a medium inlet pipe 105 is provided between the steam discharge port 101 and the condensate discharge port 102, and a medium outlet pipe 104 is provided on the other side of the outer wall of the treatment tank 1 opposite to the medium inlet pipe 105. The installation height of the medium outlet pipe 104 is lower than that of the medium inlet pipe 105. The medium inlet pipe 105 and the medium outlet pipe 104 are respectively connected to the closed jacket space formed between the inner metal tank and the outer metal tank, forming a medium circulation channel.

[0033] With the above structure, the cooling medium enters the jacket layer through the medium inlet pipe 105 and the medium outlet pipe 104, circulating from bottom to top. After absorbing the heat of the inner tank wall, it is discharged through the medium outlet pipe 104. A temperature sensor is installed in the jacket layer to monitor and regulate the temperature of the cooling medium in real time, ensuring efficient condensation of steam. The temperature of the processing tank 1 can be flexibly adjusted according to the requirements of tea processing technology. By rapidly introducing the cooling medium, the condensation of droplets in the steam is accelerated, effectively avoiding the problem of low separation efficiency due to excessively high steam temperature, and ensuring that the system can operate efficiently under different working conditions.

[0034] In this embodiment, as Figure 2 and Figure 3 As shown, the first baffle plate 401 is located above the second baffle plate 402. The two form a processing unit in a left-right symmetrical manner, and multiple such processing units are distributed in a hierarchical manner along the vertical direction. The processing units are welded together by rods. The first baffle plate 401 and the second baffle plate 402 of the lower processing unit are closely spaced, and the spacing gradually increases with each layer upward, forming a hierarchical layout with denser spacing at the bottom and sparser spacing at the top. The filter frame 403 is set in the top and bottom processing units. The surface of the filter frame 403 is provided with filter holes, and the diameter of the filter holes at the bottom is larger than that at the top.

[0035] With the above structure, the steam enters from the bottom with the highest flow rate, carrying large-diameter droplets and tea leaves. The close spacing of the baffle components in the lower processing unit forces the high-speed steam to frequently change its flow direction, using high inertial collision efficiency to quickly separate large-particle impurities. At the same time, the liquid film formed by the rough particles on the surface of the corrugated baffle components and the condensate will carry the debris and drip down along the gaps between the baffles. The scouring force generated by the high-speed airflow between the first baffle 401 and the second baffle 402 can prevent debris from adhering. As the steam rises, the flow rate gradually decreases, and the small droplets are difficult to separate by inertia due to insufficient kinetic energy. The increased spacing of the upper processing units, combined with the rough particle surface, achieves fine separation by extending the residence time and adsorption. At this time, the low-speed airflow can still drive the condensate to form a flow film on the particle surface. The adsorbed fine debris slides down with the liquid film onto the baffle components on the surface of the lower processor 4.

[0036] The filter frame 403 features a pore design with a larger diameter at the bottom and a smaller diameter at the top, allowing steam to pass through while also enabling large particles to pass through quickly through the airflow sieving action, preventing clogging. The filter frame 403 is also detachable, making installation convenient and facilitating regular cleaning of any adhering residue. Furthermore, the hierarchical layout of the processing unit creates a gradient in steam velocity, and the wave structure of each baffle plate works in conjunction with the airflow, along with the flushing effect of the condensate, effectively preventing tea leaves from accumulating on the surface of the separator 4. The plug-in connection between the separator 4 and the bracket 3, along with the impurity discharge design of the bottom seal 6, facilitates deep cleaning of areas prone to dirt accumulation.

[0037] In this embodiment, as Figure 2 and Figure 3 As shown, the first baffle plate 401 and the second baffle plate 402 are wavy and curved. The higher end of the two is adjacent to the inner wall of the processing tank 1, and a gap is formed between the lower ends of the two. The surfaces of the first baffle plate 401 and the second baffle plate 402 have a rough granular structure.

[0038] Through the above structure, the wave-like bending causes the steam to flow in an "S" shape between the plates, greatly increasing the contact time between the steam and the baffles. Compared with flat plates, it prolongs the rise time, creating more opportunities for droplet separation. When the steam flows through the undulating plate surface, its direction changes frequently. Due to inertia, the droplets continue to maintain their original motion trend, thus colliding with the plate surface. The rough granular surface further increases the collision probability, significantly improving the separation accuracy. In the steam treatment of tea processing, this structure can effectively capture fine impurities such as tea droplets and tea polyphenol vapor condensate carried by the steam. The gaps between the plates and the characteristic of one end being higher than the other provide a smooth falling channel for the coalesced droplets, avoiding the problem of liquid accumulation.

[0039] In addition, the rough particles on the surfaces of the first baffle plate 401 and the second baffle plate 402 significantly increase the actual surface area of ​​the plates, providing more physical adsorption sites for impurities. Especially when steam carries impurities through the gaps between the plates, the edges and pits on the particle surfaces can capture tiny impurities through inertial collisions and interception effects.

[0040] In this embodiment, as Figure 3 As shown, a semi-circular slot is provided through one end of the surface of the bracket 3 for the flow of gas and liquid, and a slot is provided on the solid surface of the other end for insertion with the rod below the separator 4. The bottom of the treatment tank 1 has a pipe opening for removing impurities at the coaxial position with the bracket 3, and the rubber plug on the surface of the bottom seal 6 is inserted and connected to the inner wall of the pipe opening.

[0041] With the above structure, the slot on the solid surface of the bracket 3 is tightly inserted into the rod below the separator 4, providing stable support for the separator 4 and ensuring that it remains in a fixed position under the high-speed impact of steam. The impurity discharge port at the bottom of the treatment tank 1, together with the rubber plug of the bottom seal 6, facilitates the regular cleaning of impurities deposited at the bottom of the tank.

[0042] The specific operating procedure of this utility is as follows: First, connect the gas-liquid mixing inlet 103 to the steam discharge end of the tea processing equipment (such as steaming equipment) through a pipeline. The steam discharge port 101 can be connected to the tea processing equipment used for steam recovery (such as sterilization or pressing equipment that uses dry steam to soften tea leaves).

[0043] When the processing equipment connected to the vapor-liquid mixing inlet 103 generates steam, the high-temperature vapor-liquid mixture (containing water vapor, liquid water droplets, and impurities such as tea leaves) emitted from it enters the bottom of the treatment tank 1 through the vapor-liquid mixing inlet 103. The inlet pipe of the vapor-liquid mixing inlet 103 is inclined upwards, guiding the vapor-liquid mixture to rise from bottom to top. It is then separated by the separator 4. The grid aperture on the surface of the lowest filter frame 403 is 8mm, allowing steam and impurities to pass through. The wave structure of the first baffle 401 and the second baffle 402 guides the steam in an "S" pattern. The "type" path extends the residence time, effectively separating vapor and liquid. When the steam comes into contact with it, the liquid droplets inside the steam impact the plate surface due to inertia, gather along the rough surface, and drip through the gap between the plates to the lower condensation zone. Through the collision of multiple first baffles 401 and second baffles 402, the interception of the filter frame 403, and the cooling and condensation of the jacket layer, liquid water and impurities are removed from the steam. Finally, high dryness water vapor is discharged from the steam discharge port 101, meeting the tea processing requirements for pure steam without liquid water interference.

[0044] After being processed by multiple units within the separator 4, the steam flows to the steam discharge port 101 where the inclined plate 5 is located. The inclined plate 5 is installed at a 30° angle, and the rough particles on its surface form dense impact points, which can increase the contact area with the steam at the last channel. The rough particles on the surface of the inclined plate form dense impact points, which only produce inertial collision interception effect on the droplets carried in the steam, without obstructing the steam flow. Combined with its angle and the shape of the barb at the bottom, the droplets fall along the barb under the action of gravity.

[0045] If the steam temperature generated by the tea processing equipment connected to the recycling system is as high as 135°C or above, the steam needs to be cooled quickly to separate the condensate and reduce the steam temperature to the range applicable to downstream equipment. Therefore, the cooling circulation system can be entered through the jacket layer of the processing tank 1, and 15-25°C cooling water can be introduced through the medium inlet pipe. The cooling water circulates in the jacket layer, keeping the inner tank wall temperature at 60-80°C. When the high-temperature steam comes into contact with the tank wall, only the droplets condense due to the temperature difference, while the main body temperature of the steam remains above the saturation point and remains in a gaseous state. This structure can significantly improve the additional condensation efficiency.

[0046] Temperature sensors installed in the jacket layer monitor the cooling water temperature in real time. When the outlet water temperature is >35℃, the cooling water replacement program is triggered. High-temperature water is discharged through the medium outlet pipe 104 and treated with the help of external cooling equipment. Low-temperature cooling water is replenished after recycling to ensure cooling efficiency.

[0047] The liquid level sensor monitors the condensate level in real time. When the liquid level reaches the condensate discharge port 102, the electric valve is automatically opened to discharge the condensate into the external recovery tank. Since the bottom of the treatment tank 1 is a conical structure and the discharge port is 60mm away from the bottom wall, it can effectively prevent sediment impurities from being sucked in and ensure the cleanliness of the recovered water.

[0048] When the condensate inside the treatment tank 1 reaches the position of the condensate discharge port 102, the liquid level sensor can detect the actual liquid level and collect it by opening the valve at the pipe opening. Furthermore, the bottom of the treatment tank 1 has a conical structure, and the opening of the condensate discharge port 102 is not attached to the bottom wall. This can effectively prevent the extraction of impurities that have settled at the bottom of the treatment tank 1 when collecting condensate.

[0049] In addition, the pressure sensor on the top of the tank cover 2 monitors the pressure inside the tank in real time. When the pressure exceeds the set value, the safety valve of the steam discharge port 101 is automatically opened to release the pressure. The separator 4 and the inclined plate 5 are detachable structures and can be cleaned regularly. At the same time, by removing the bolts connecting the bottom seal 6 to the bottom of the treatment tank 1, the impurities deposited on the bottom wall of the treatment tank 1 can be discharged.

[0050] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A boiler steam recovery system, comprising a treatment tank (1) and a tank cover (2), characterized in that: The treatment tank (1) is connected to the tank cover (2) by flange bolts. The inner wall of the treatment tank (1) is welded with a bracket (3). The treatment tank (1) is provided with a detachable separator (4) inside. The separator (4) is located above the bracket (3). A detachable inclined plate (5) is connected to one side of the inner wall of the treatment tank (1). The inclined plate (5) is located above the separator (4). The bottom of the treatment tank (1) is connected with a bottom seal (6) by bolts. The separator (4) includes a first baffle plate (401), a second baffle plate (402), and a filter frame (403). The first baffle plate (401) and the second baffle plate (402) are symmetrically distributed. The filter frame (403) is located below the first baffle plate (401), and one end of it is welded and fixed to the second baffle plate (402).

2. A boiler steam recovery system according to claim 1, characterised in that: The processing tank (1) is a double-layer metal tank structure with an inner and outer layer. A closed jacket space is formed between the inner and outer metal tanks. The bracket (3), separator (4) and inclined plate (5) are all located inside the inner metal tank.

3. A boiler steam recovery system as claimed in claim 1, wherein: The outer wall of the treatment tank (1) is provided with a steam discharge port (101) and a condensate discharge port (102) respectively. The steam discharge port (101) is located above the condensate discharge port (102) and adjacent to the upper area of ​​the inclined plate (5). A vapor-liquid mixing inlet (103) is provided on one side of the condensate discharge port (102), with one end of its extension inclined and the pipe opening facing upward, and located below the bracket (3).

4. A boiler steam recovery system as claimed in claim 3, wherein: A medium inlet pipe (105) is provided between the steam discharge port (101) and the condensate discharge port (102), and a medium outlet pipe (104) is provided on the other side of the outer wall of the treatment tank (1) opposite to the medium inlet pipe (105). The installation height of the medium outlet pipe (104) is lower than that of the medium inlet pipe (105). The medium inlet pipe (105) and the medium outlet pipe (104) are respectively connected to the closed jacket space formed between the inner metal tank and the outer metal tank, forming a medium circulation channel.

5. A boiler steam recovery system as claimed in claim 1, wherein: The first baffle plate (401) is located above the second baffle plate (402). The two form a processing unit in a left-right symmetrical manner. Multiple such processing units are distributed in a hierarchical manner along the vertical direction. The processing units are welded together by rods. The first baffle plate (401) and the second baffle plate (402) of the lower processing unit are closely spaced. The spacing gradually increases with each layer upward, forming a hierarchical layout with denser lower layers and sparser upper layers. The filter frame (403) is located in the topmost and bottommost processing units.

6. A boiler steam recovery system as claimed in claim 1, wherein: The first baffle (401) and the second baffle (402) are wavy and curved. The higher end of the two is adjacent to the inner wall of the processing tank (1), and a gap is formed between the lower ends of the two. The surfaces of the first baffle (401) and the second baffle (402) have a rough granular structure.

7. A boiler steam recovery system as claimed in claim 1, wherein: The surface of the bracket (3) is provided with a semicircular notch at one end for circulating gas and liquid, and a slot is provided on the solid surface at the other end for inserting a rod below the separator (4). A tube is provided at the bottom of the processing tank (1) coaxially with the bracket (3) for removing impurities. A rubber plug is provided on the surface of the bottom sealing member (6) and is connected to the inner wall of the tube.

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