Dry tail gas treatment apparatus with segmented cooling channels

Abstract

The utility model discloses a drying tail gas treatment device with segmented cooling channel belongs to industrial tail gas treatment technical field. The device includes cooling path, fixed plate, shelter mechanism and compensation mechanism. Among them, shelter mechanism is assembled in the inside of cooling path, is used for the dynamic regulation cross -section area of cooling path to accurate control tail gas flow rate and cooling time. Shelter mechanism realizes through motor drive gear, rack drive sliding block and baffle movement. Compensation mechanism is assembled in the junction of cooling path and fixed plate, contains knob, rotary rod, fixed block, support block and spring. The utility model solves the problem of the prior art in tail gas cooling temperature control inaccuracy, high energy consumption and the problem of poor reliability of modular connection, easy to leak, realizes the accurate temperature control of tail gas treatment, high -efficient heat exchange, energy -conserving and loss -reducing, and significantly improves the long -term stability and maintenance convenience of equipment connection.

Description

Technical Field

[0001] This utility model relates to the field of industrial exhaust gas treatment technology, and in particular to a dry exhaust gas treatment device with segmented cooling channels. Background Technology

[0002] In industrial production processes such as food and chemicals, drying is a common operation unit, generating a large amount of exhaust gas containing volatile organic compounds (such as flavor compounds). This exhaust gas not only causes environmental pollution, but the flavor compounds it contains also have high economic recovery value. To effectively recover flavor compounds from the exhaust gas, absorption methods are typically used, but absorption efficiency is often significantly affected by the exhaust gas temperature. Therefore, precise temperature control of the exhaust gas before absorption, reducing it to the temperature range where flavor compounds are most easily captured, is crucial.

[0003] However, existing exhaust gas cooling devices generally have limitations. The cooling channel structure of these devices is usually fixed, and their internal cross-sectional area and heat exchange area are difficult to adjust after the design is completed. This means that in actual production, when the exhaust gas flow rate, initial temperature, or composition changes, the cooling device cannot dynamically adjust the cooling intensity and time according to these real-time operating conditions. This rigid cooling structure leads to problems: when the exhaust gas temperature is too high, the cooling effect is insufficient, affecting subsequent absorption efficiency; while when the exhaust gas temperature is too low or the flow rate decreases, the fixed cooling capacity results in over-cooling and unnecessary energy waste. Therefore, the lack of a structure that can dynamically and precisely control the cooling process according to real-time needs has become a key technological bottleneck restricting exhaust gas treatment efficiency and energy consumption optimization.

[0004] Furthermore, to facilitate equipment maintenance and repair, modern industrial equipment increasingly adopts modular designs. Designing cooling channels as detachable modules undoubtedly improves maintenance efficiency. However, the long-term reliability of modular connections remains a challenge. Traditional bolted connections experience a gradual loss of preload due to vibration, thermal expansion and contraction during equipment operation, leading to loosening and ultimately exhaust gas leakage. This not only affects treatment effectiveness but also poses safety hazards. Therefore, ensuring the long-term stability and airtightness of connections while implementing modular cooling channel design is a problem that current technologies urgently need to solve.

[0005] Therefore, this utility model proposes a dry exhaust gas treatment device with segmented cooling channels to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of dry exhaust gas treatment devices with segmented cooling channels, such as the inability to dynamically and accurately control the cooling process according to real-time operating conditions, resulting in low heat exchange efficiency and high energy consumption, and the low reliability of modular connections after long-term operation, such as pre-tightening force loss and easy exhaust gas leakage, this utility model aims to provide a dry exhaust gas treatment device with segmented cooling channels with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a dry exhaust gas treatment device with segmented cooling channels, including: cooling channels, fixing plates, shielding mechanisms, and compensation mechanisms.

[0008] The shielding mechanism is installed inside the cooling channel, the compensation mechanism is installed at the connection between the cooling channel and the fixed plate, and the fixed plate is fixedly connected to the outside of the cooling channel.

[0009] The shielding mechanism includes a motor, gears, two baffles, two sliding blocks, two racks, and a sealing assembly. The sealing assembly itself includes a sealing frame and a groove opened along its inner wall. The motor is driven and connected to the gears, and the outer sides of the gears are meshed with the outer sides of the two racks. One end of each rack is fixedly connected to a sliding block, each sliding block is slidably fitted inside the groove, and each sliding block is also fixedly connected to a baffle. The baffles are slidably disposed inside the cooling channel, and the outer sides of the baffles are always in close contact with the outer sides of the sealing frame.

[0010] The compensation mechanism includes a knob, a rotating rod, a fixed block, a protective shell, a damper, a spring, and a support block. The knob is driven and connected to one end of the rotating rod, which passes through a slot in the inner wall of the fixed plate and is driven and connected to the fixed block. The fixed block is rotatably fitted inside the cooling channel, the spring is compressed and set outside the support block, the damper is connected to the support block, and the protective shell is fixedly connected to the outside of the fixed plate.

[0011] Preferably, the drying exhaust gas treatment device further includes a cyclone separator and an absorption tower. The inlet end of the cooling channel is connected to the cyclone separator via a pipe for separating and removing solid dust impurities in the exhaust gas. The outlet end of the cooling channel is connected to the absorption tower via a pipe for capturing volatile flavor substances in the exhaust gas.

[0012] Preferably, the drying exhaust gas treatment device further includes a triple-effect concentrator, with the outlet end of the absorption tower connected to the triple-effect concentrator via a pipeline for concentrating the recovered liquid that has absorbed volatile flavor substances.

[0013] Preferably, the motor drives the gear to rotate, thereby causing the two racks to switch between moving closer to each other and moving further away from each other, which in turn causes the two baffles to move synchronously inside the cooling channel, thereby increasing or decreasing the cross-sectional area inside the cooling channel.

[0014] Preferably, the relative contact surfaces of the fixed block and the support block in the compensation mechanism are provided with guide slopes; when the knob is rotated, the fixed block rotates accordingly and uses the guide slopes to press the two support blocks, causing the two support blocks to move and compress the corresponding springs.

[0015] Preferably, the spring stores elastic force after being compressed, and the elastic force provides a continuous force to the support block toward the fixed block to compensate for the loss of connection preload due to long-term use.

[0016] Preferably, the cooling channel includes two modular parts that can be separated from each other; multiple bolts are connected to the fixing plate by bolts, and the two modular parts of the cooling channel are fastened to the fixing plate by bolts. When the fixing block is completely removed from the interior of the fixing plate, the two modular parts can be separated from each other by loosening the bolts.

[0017] Preferably, the protective cover is located outside the fixed block to protect the internal components of the compensation mechanism.

[0018] This utility model has the following beneficial effects: 1. This utility model, by setting up a shielding mechanism consisting of a motor, gears, racks, sliding blocks, and baffles, achieves dynamic adjustment of the cross-sectional area inside the cooling channel. It solves the problem in the prior art where the heat exchange area of ​​the cooling device is fixed, making it impossible to accurately control according to the real-time temperature and flow of the exhaust gas, resulting in unstable heat exchange efficiency and energy waste. It achieves the technical effect of accurately controlling the temperature, significantly improving heat exchange efficiency, and saving energy by changing the exhaust gas flow rate and cooling time in real time according to the working conditions.

[0019] 2. This utility model solves the problem in the prior art where modular cooling channels, after being fixed with bolts for a long time, are prone to loss of pre-tightening force due to vibration or thermal expansion and contraction, resulting in loose connections and the risk of exhaust gas leakage. By setting up a compensation mechanism composed of knobs, rotating rods, fixing blocks, support blocks and springs, this invention achieves the technical effect of automatically compensating for connection pre-tightening force using spring force, ensuring that the modular channels fit tightly for a long time, fundamentally eliminating leakage, and significantly improving the operational stability and safety of the device.

[0020] 3. This utility model, by designing the overall cooling channel into a modular structure and using a compensation mechanism that can quickly lock and release, solves the problems of integrated structure, complex disassembly and maintenance, time-consuming and labor-intensive, and long downtime of the existing cooling device, achieving the technical effect of simplifying the disassembly and assembly process, shortening the maintenance cycle, and greatly improving the equipment maintenance efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a dry exhaust gas treatment device with segmented cooling channels proposed in this utility model. Figure 2 This is a schematic diagram of the structure of the sliding block of a dry exhaust gas treatment device with segmented cooling channels proposed in this utility model. Figure 3 This is a schematic diagram of the sealing frame of a dry exhaust gas treatment device with segmented cooling channels proposed in this utility model. Figure 4 This is a schematic diagram of the rotating rod of a dry exhaust gas treatment device with segmented cooling channels proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Legend: 1. Cyclone separator; 2. Cooling channel; 3. Shielding mechanism; 31. Motor; 32. Gear; 33. Baffle; 34. Sliding block; 35. Rack; 36. Sealing assembly; 361. Sealing frame; 362. Slide groove; 4. Fixing plate; 5. Compensation mechanism; 51. Knob; 52. Rotating rod; 53. Fixing block; 54. Protective shell; 55. Damper; 56. Spring; 57. Support block; 6. Absorption tower; 7. Triple-effect concentrator. Detailed Implementation

[0023] Example: Reference Figures 1 to 5 This utility model provides a dry exhaust gas treatment device with segmented cooling channels, which aims to solve the problems in the prior art where exhaust gas treatment devices are difficult to dynamically and accurately control according to the real-time temperature of the exhaust gas, and where the connection reliability of modular cooling channels decreases and maintenance is inconvenient after long-term operation.

[0024] like Figure 1 and Figure 2 As shown, the dry exhaust gas treatment device with segmented cooling channels includes a cooling channel 2 and a fixing plate 4 fixedly connected to the outside of the cooling channel 2. The cooling channel 2 serves as a carrier for the flow of dry exhaust gas, realizing gradient cooling treatment of the exhaust gas, while the fixing plate 4 serves as the mounting base for the entire device and provides a stable connection interface for subsequent core functional modules.

[0025] To achieve dynamic control of the temperature of the dried exhaust gas, a shielding mechanism 3 is installed inside the device. The design of the shielding mechanism 3 allows for precise adjustment of the cross-sectional area inside the cooling channel 2, thereby controlling the flow rate and residence time of the exhaust gas within the channel. The shielding mechanism 3 specifically includes a motor 31, a gear 32, two baffles 33, two sliding blocks 34, two racks 35, and a sealing assembly 36. The motor 31 drives the gear 32, enabling the gear 32 to rotate. The outer surfaces of the gear 32 are meshed with the outer surfaces of the two racks 35, meaning that the rotation of the gear 32 can directly drive the two racks 35 to move in opposite or opposite linear motion.

[0026] One end of each rack 35 is fixedly connected to a sliding block 34. The outer side of the sliding block 34 slides into a groove 362 inside the sealing assembly 36. The groove 362 is opened along the inner wall of the sealing assembly 36, providing precise guidance for the reciprocating movement of the sliding block 34. The sealing assembly 36 also includes a sealing frame 361. The other end of each sliding block 34 is fixedly connected to a baffle 33. The baffle 33 is slidably disposed inside the cooling channel 2 and directly participates in adjusting the effective cross-sectional area of ​​the cooling channel 2. To ensure that the exhaust gas does not leak during the adjustment of the baffle 33, the outer side of the baffle 33 is always in close contact with the outer side of the sealing frame 361. When the exhaust gas temperature is too high, the motor 31 drives the gear 32, causing the two racks 35 to move away from each other, thereby driving the two sliding blocks 34 to move away from each other inside the groove 362, and finally causing the two baffles 33 to separate to both sides. At this time, the cross-sectional area inside the cooling channel 2 increases, the exhaust gas flow rate decreases, and the heat exchange time is prolonged, thereby improving the cooling effect. When the exhaust gas temperature reaches the preset standard, the motor 31 drives in reverse, causing the two racks 35 to move closer to each other, which in turn drives the two sliding blocks 34 to move closer to each other inside the slide groove 362, causing the two baffles 33 to also move closer to each other. At this time, the cross-sectional area inside the cooling channel 2 decreases, the exhaust gas flow rate increases, and unnecessary energy consumption is avoided.

[0027] To ensure the modular cooling channel 2 can be stably and securely connected to the fixed plate 4 over a long period, and to facilitate disassembly and installation, a compensation mechanism 5 is installed at the connection between the cooling channel 2 and the fixed plate 4. The compensation mechanism 5 includes a knob 51, a rotating rod 52, a fixing block 53, a protective shell 54, a damper 55, a spring 56, and two support blocks 57. The knob 51 is driven to one end of the rotating rod 52, which passes through a slot in the inner wall of the fixed plate 4, and is driven to the fixing block 53 at the other end. The fixing block 53 rotatably engages with the interior of the cooling channel 2. The spring 56 is compressed and disposed on the exterior of the support block 57, and the damper 55 is connected to the support block 57 to slow its movement. The protective shell 54 is fixedly connected to the exterior of the fixed plate 4 to provide effective protection for the internal components of the compensation mechanism 5.

[0028] Reference Figure 1 , Figure 4 and Figure 5 The knob 51 of the compensation mechanism 5 is located on the outside of the fixed plate 4 for the operator to hold. One end of the knob 51 is fixedly connected to the rotating rod 52. The rotating rod 52 passes through the slot in the inner wall of the fixed plate 4, and the other end extends into the interior of the cooling channel 2 and is fixedly connected to the fixed block 53. This allows the internal fixed block 53 to be driven to rotate synchronously by rotating the external knob 51. The rotating rod 52 and the slot in the fixed plate 4 are rotatably connected.

[0029] The fixing block 53 has a specific external profile, and its contact surfaces with the two support blocks 57 are provided with guide slopes. The design of the guide slopes allows the fixing block 53 to smoothly compress or release the support blocks 57 when rotating. The two support blocks 57 are slidably disposed inside the cooling channel 2. Each support block 57 is externally compressed with a spring 56, and the other end of the spring 56 abuts against the inner wall of the cooling channel 2. In the assembled state, when the operator rotates the knob 51, the fixing block 53 rotates accordingly, and its guide slope slides along the guide slope of the support block 57 and applies a pushing force, forcing the two support blocks 57 to move towards each other and further compress their respective springs 56. After being compressed, the springs 56 store a large amount of elastic potential energy. This elastic potential energy continuously acts on the fixing block 57 through the support blocks 57. Block 53, in turn, tightly pulls the entire cooling channel 2 module toward the fixed plate 4, forming a preload compensation structure. This structure can effectively compensate for the preload lost by the bolts under long-term vibration or temperature changes, ensuring that the connection is always tight and preventing exhaust gas leakage. At the same time, each support block 57 is also connected to a damper 55. The function of the damper 55 is to delay the reset speed of the support block 57 through its damping effect when the spring force of the spring 56 is released, avoiding the impact caused by the instantaneous release of the spring force, and improving the stability and safety of operation. Finally, on the outer wall of the fixed plate 4, corresponding to the position of each compensation mechanism 5, a protective shell 54 is also fixedly connected. The protective shell 54 covers the outside of the fixed block 53, providing effective dustproof and impact protection for the internal components of the compensation mechanism 5.

[0030] In a preferred embodiment, to achieve a complete exhaust gas treatment and flavor substance recovery process, the inlet end of the cooling channel 2 is connected to a cyclone separator 1 via a pipe. The cyclone separator 1 is used to perform preliminary purification on the incoming dry exhaust gas, separating and removing solid dust impurities entrained in the exhaust gas through centrifugal force. The outlet end of the cooling channel 2 is connected to an absorption tower 6 via a pipe. The absorption tower 6 is filled with food-grade absorbent to efficiently capture volatile flavor substances contained in the precisely cooled exhaust gas. Furthermore, the outlet end of the absorption tower 6 is connected to a triple-effect concentrator 7 via a pipe. The triple-effect concentrator 7 is used to perform final concentration and purification treatment on the recovered liquid that has absorbed flavor substances.

[0031] As another preferred embodiment, in order to achieve precise dynamic control of cooling efficiency, the motor 31 drives the gear 32 to rotate, and through meshing transmission, drives the two racks 35 to switch between moving closer to each other and moving further away from each other. The linear movement of the racks 35 causes the two baffles 33 to move synchronously opening and closing inside the cooling channel 2. This series of linkages ultimately increases or decreases the effective cross-sectional area inside the cooling channel 2, thereby actively changing the flow rate of the exhaust gas and the heat exchange time.

[0032] As another preferred embodiment, in order to establish a reliable self-compensating preload system, the relative contact surfaces of the fixed block 53 and the support block 57 in the compensation mechanism 5 are provided with guide slopes. When the operator rotates the knob 51, the fixed block 53 rotates accordingly and uses its guide slope to smoothly squeeze the two support blocks 57, forcing the two support blocks 57 to move towards each other and compress the corresponding springs 56. The compressed springs 56 store elastic potential energy, which provides a continuous force to the support blocks 57 towards the fixed block 53. This force can effectively compensate for the loss of connection preload caused by long-term operation of the equipment.

[0033] As another preferred embodiment, in order to greatly simplify the installation, maintenance and replacement process of the equipment, the overall structure of the cooling channel 2 consists of two modular parts that can be separated from each other. Multiple bolts are connected to the fixing plate 4 by bolts. The two modular parts of the cooling channel 2 are fastened to the fixing plate 4 by these bolts. When maintenance is required, after the fixing block 53 is completely removed from the interior of the fixing plate 4, the operator only needs to loosen these bolts to separate the two modular parts from each other.

[0034] As another preferred embodiment, in order to provide physical protection for the precision compensation mechanism 5 and prevent dust intrusion or damage caused by accidental collision, a protective shell 54 is placed over the outside of the fixing block 53 and fixedly connected to the outer wall of the fixing plate 4.

[0035] The working principle is as follows: In the exhaust gas treatment process, the dry exhaust gas containing solid dust impurities first enters through the inlet of the cyclone separator 1. Gas-solid separation is achieved through centrifugal force, and the purified exhaust gas then enters the cooling channel 2. When cooling of the exhaust gas is required, the operator starts the motor 31, which drives the gear 32 to rotate. Since the outer surface of the gear 32 is meshed with the outer surfaces of the two racks 35, the rotation of the gear 32 causes the two racks 35 to move away from each other in a linear motion. Each rack 35 drives the sliding block 34, which is fixedly connected to it, to slide synchronously outward within the groove 362 of the sealing assembly 36. This, in turn, drives the baffle 33, which is fixedly connected to it, to move away from each other within the cooling channel 2. As the cooling channel 2 moves, its cross-sectional area increases, the flow rate of the exhaust gas decreases accordingly, and the residence time of the exhaust gas in the cooling channel 2 is extended, thereby achieving more complete heat exchange and improving cooling efficiency. When the exhaust gas temperature drops to the target range, the motor 31 can reverse the drive, causing the two baffles 33 to move closer to each other, reducing the cross-sectional area and accelerating the exhaust gas flow rate to save energy. Throughout the adjustment process, the outer wall of the baffle 33 always maintains tight sliding contact with the outer wall of the sealing frame 361 of the sealing component 36, effectively preventing any leakage of the exhaust gas. The cooled exhaust gas finally enters the absorption tower 6 and comes into contact with the absorbent to complete the capture of flavor substances. The recovered liquid containing flavor substances is then transported to the triple-effect concentration tower 7 for concentration.

[0036] During the installation and maintenance of the device, when it is necessary to install the cooling channel 2 module, the operator first aligns the two modular parts and initially fixes them to the fixing plate 4 with bolts. Then, holding the knob 51, the operator inserts the rotating rod 52 into the slot opened on the inner wall of the fixing plate 4. The rotating rod 52 drives the fixing block 53 to slide on the inner wall of the cooling channel 2 until the outer wall of the knob 51 is in contact with the outer wall of the fixing plate 4. At this time, rotating the knob 51 causes the fixing block 53 to simultaneously squeeze the two supporting blocks 57 due to the guide slope on the relative contact surfaces of the fixing block 53 and the support block 57. The two supporting blocks 57 begin to move and compress the corresponding springs 56. The springs 56 store elasticity during the compression process. When the fixing block 53 is rotated into place, the elastic force stored in the spring 56 will provide a continuous outward force to the support block 57. The force will firmly pull the entire cooling channel 2 module onto the fixing plate 4 through the fixing block 53, completing the fastening installation and providing pre-tightening force compensation. When disassembly is required, rotate the knob 51 in the opposite direction, and the fixing block 53 will gradually release the pressure on the two support blocks 57. The compressed spring 56 will start to release its elastic force, pushing the support block 57 to complete the reset. At this time, the damper 55 will slow down the movement speed of the support block 57 through its own damping effect, ensuring the smoothness of the operation. Then the bolts can be loosened to separate the cooling channel 2 module. The whole process is protected by the protective shell 54.

Claims

1. A dry exhaust gas treatment device with segmented cooling channels, comprising: Cooling channel (2); A fixing plate (4) is fixedly connected to the outside of the cooling channel (2); A shielding mechanism (3) is installed inside the cooling channel (2); Compensation mechanism (5), which is assembled at the connection between the cooling channel (2) and the fixing plate (4); Its features are, The shielding mechanism (3) includes: a motor (31), a gear (32), two baffles (33), two sliding blocks (34), two racks (35) and a sealing assembly (36), the sealing assembly (36) including a sealing frame (361) and a groove (362) opened along its inner wall.

2. The drying exhaust gas treatment device according to claim 1, characterized in that, The motor (31) is driven by the gear (32). The outside of the gear (32) is meshed with the outside of the two racks (35). One end of each rack (35) is fixedly connected to a sliding block (34). Each sliding block (34) is slidably fitted inside the groove (362) and fixedly connected to a baffle (33). The baffle (33) is slidably disposed inside the cooling channel (2), and the outside of the baffle (33) is always in close contact with the outside of the sealing frame (361). The compensation mechanism (5) includes: a knob (51) and a rotating rod. (52), fixed block (53), protective shell (54), damper (55), spring (56) and support block (57), the knob (51) is driven to one end of the rotating rod (52), the rotating rod (52) passes through the slot in the inner wall of the fixed plate (4) and is driven to the fixed block (53), the fixed block (53) is rotatably fitted inside the cooling channel (2), the spring (56) is compressed and set outside the support block (57), the damper (55) is connected to the support block (57) to slow down its movement speed, and the protective shell (54) is fixedly connected to the outside of the fixed plate (4).

3. The drying exhaust gas treatment device according to claim 2, characterized in that, The inlet end of the cooling channel (2) is connected to the cyclone separator (1) via a pipe. The cyclone separator (1) is used to separate and remove solid dust impurities in the exhaust gas. The outlet end of the cooling channel (2) is connected to the absorption tower (6) via a pipe. The absorption tower (6) is used to capture volatile flavor substances in the exhaust gas.

4. The drying exhaust gas treatment device according to claim 3, characterized in that, The outlet of the absorption tower (6) is connected to the triple-effect concentration tower (7) via a pipeline. The triple-effect concentration tower (7) is used to concentrate the recovered liquid that has absorbed volatile flavor substances.

5. The drying exhaust gas treatment device according to claim 2, characterized in that, The motor (31) drives the gear (32) to rotate, thereby causing the two racks (35) to switch between moving closer to each other and moving further away from each other, thereby causing the two baffles (33) to move synchronously inside the cooling channel (2) to increase or decrease the cross-sectional area inside the cooling channel (2).

6. The drying exhaust gas treatment device according to claim 2, characterized in that, The fixed block (53) and the support block (57) in the compensation mechanism (5) are provided with guide slopes on their relative contact surfaces. When the knob (51) is rotated, the fixed block (53) rotates accordingly and uses the guide slopes to squeeze the two support blocks (57), so that the two support blocks (57) move and compress the corresponding springs (56).

7. The drying exhaust gas treatment device according to claim 6, characterized in that, The spring (56) stores elastic force after being compressed, and the elastic force provides a continuous force to the support block (57) toward the fixing block (53) to compensate for the loss of connection preload due to long-term use.

8. The drying exhaust gas treatment device according to claim 2, characterized in that, The cooling channel (2) includes two modular parts that can be separated from each other; multiple bolts are connected to the fixing plate (4) by bolts, and the two modular parts of the cooling channel (2) are fastened to the fixing plate (4) by the bolts. When the fixing block (53) completely leaves the interior of the fixing plate (4), the two modular parts can be separated from each other by loosening the bolts.

9. The drying exhaust gas treatment device according to claim 2, characterized in that, The protective shell (54) is placed over the outside of the fixing block (53) to protect the internal components of the compensation mechanism (5).

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