Vacuum anti-blocking exhaust device

Abstract

The utility model discloses a kind of vacuum anti-blocking exhaust devices, belong to vacuum exhaust device field. Including connecting assembly, vacuum settling cylinder, one end of vacuum settling cylinder is provided with pretreatment unit, pretreatment unit includes inclined cross pipe connected in the other end of vacuum settling cylinder, inclined cross pipe is composed of vertical pipe and inclined pipe by intercross connection, and one end of vertical pipe and inclined pipe is fixed with sealing cover;Cleaning assembly, cleaning assembly includes two groups of piston push-pull rod that extend into vertical pipe and inclined pipe, one end of piston push-pull rod is fixed with piston part, and piston part end face is slightly convex arc surface;Protective component, it is set on sealing cover. A kind of vacuum anti-blocking exhaust device of the application, by vacuum settling cylinder preliminary processing tail gas reduction powder, inclined cross pipe reduces viscosity and adheres to accumulate;Cleaning assembly borrows piston push-pull rod and arc piston part to scrape off adhering object, and it is exempted from stop machine cleaning;Protective component protects push-pull rod, and keeps cleaning assembly stable, prevent pipeline blockage.

Description

Technical Field

[0001] This utility model relates to the field of vacuum exhaust device technology, and in particular to a vacuum anti-blocking exhaust device. Background Technology

[0002] In industrial sectors such as chemical, pharmaceutical, food processing, and new material preparation, vacuum exhaust systems are crucial supporting equipment for ensuring continuous production, stable product quality, and environmental compliance. These systems must effectively treat exhaust gases containing dust and oil-gas mixtures generated during production. This requires separating dust from gas to prevent dust from entering subsequent vacuum equipment (such as vacuum pumps and heat exchangers) and causing wear or blockages. It also necessitates ensuring exhaust emissions meet environmental standards and maintaining a stable vacuum level over the long term to prevent production interruptions due to pipe blockages. Currently, the industry generally adopts a vacuum exhaust treatment scheme that combines sedimentation separation with pipeline transportation. The exhaust gas first enters the sedimentation tank, and by utilizing the principle of reduced airflow velocity, dust particles of different sizes are naturally separated under gravity. Coarse dust particles settle to the bottom of the sedimentation tank due to gravity and are discharged through the ash removal mechanism; while finer particles continue to rise with the light oil and gas mixture and are transported through pipelines to the exhaust outlet, and finally connected to subsequent exhaust gas treatment units (such as adsorption towers, incineration devices) or the next process receiver. However, the existing solutions have drawbacks in long-term operation, primarily the risk of pipeline blockage. Because the oil and gas components in the exhaust gas are viscous, fine powder will combine with the oily substances to form an oil-powder deposit, which continues to adhere to the inner wall of the pipeline over time. This deposit is highly adhesive and easily solidifies, initially causing a reduction in the pipeline diameter, increasing exhaust gas flow resistance, and lowering the system vacuum. If not cleaned in time, the deposit will gradually thicken and eventually completely block the pipeline, forcing production to stop for manual cleaning. Therefore, a vacuum anti-blockage exhaust device needs to be designed.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0004] This utility model provides a vacuum anti-clogging exhaust device to solve the problem that existing solutions have the risk of pipeline blockage during long-term operation, where oil and gas and fine powder form a strong and easily solidified adhesive, which will reduce the pipe diameter and vacuum level, and cause the machine to stop due to blockage if not cleaned.

[0005] This utility model embodiment adopts the following technical solution: a vacuum anti-clogging exhaust device. It mainly includes a connecting assembly, which includes a connecting unit connected to the exhaust port of a dryer. The connecting unit includes a vacuum settling cylinder. One end of the vacuum settling cylinder is provided with a pretreatment unit that provides a specific flow path for the exhaust gas. The pretreatment unit includes an inclined four-way pipe connected to the other end of the vacuum settling cylinder. The inclined four-way pipe is composed of vertical pipes and inclined pipes that are interconnected. Sealing caps are fixed to the ends of the vertical pipes and inclined pipes that are close to each other. A cleaning assembly is disposed on the pretreatment unit. The cleaning assembly includes two sets of piston push-pull rods extending into the vertical pipes and inclined pipes. A piston portion is fixed to one end of each piston push-pull rod, and the end face of the piston portion is a slightly convex arc surface. A protective assembly is disposed on the sealing cap. The protective assembly is used to protect the protruding parts of the piston push-pull rods.

[0006] Furthermore, the protective assembly includes a protective unit sleeved on the piston push-pull rod, the protective unit including a protective cover sleeved on the piston push-pull rod, the protective cover being hollow cylindrical in shape and capable of completely covering the protruding portion of the piston push-pull rod.

[0007] Furthermore, the other end of the piston push rod is fixed with an anti-disengagement end, and the piston push rod is pushed by external force.

[0008] Furthermore, the protective assembly includes a protective cover sleeved on the piston push-pull rod, one end of which extends beyond the anti-detachment end of the piston push-pull rod, and a ring of annular bristles is provided on the inner wall of one end of the protective cover. The annular bristles contact the top surface of the anti-detachment end and are used to block the gap between one end of the protective cover and the anti-detachment end.

[0009] Furthermore, the bottom of the protective cover has a connecting end that overlaps the sealing cover, and multiple sets of waist grooves are symmetrically opened on the protective cover, with transparent baffles embedded in the waist grooves.

[0010] Furthermore, at least two sets of fixing parts are connected between the connecting end and the sealing cover. Each fixing part includes a concave part fixed to the bottom surface of the sealing cover. A rotating shaft is movably arranged inside the concave part. A vertically arranged snap-fit ​​rod is fixed on the rotating shaft. By rotating the rotating shaft, both ends of the sealing cover and the connecting end are provided with openings that match the diameter of the snap-fit ​​rod. A knob is threaded to one end of the snap-fit ​​rod.

[0011] Furthermore, the piston end face is made of polytetrafluoroethylene.

[0012] Furthermore, the vacuum settling cylinder has a connection port, one end of the vertical tube is connected to the vacuum settling cylinder, and one end of the inclined tube has an exhaust port.

[0013] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: A vacuum anti-clogging exhaust device uses a vacuum settling cylinder to pre-treat exhaust gas, reducing the amount of fine powder entering the inclined four-way pipe. The vertical and inclined sections of the inclined four-way pipe provide a specific flow path for the exhaust gas, reducing the probability of initial accumulation of oil and powder adhering substances. Two sets of piston push-pull rods of the cleaning component drive the piston part into the pipe. The slightly convex arc surface of the piston part can closely fit the pipe wall, and the push-pull action efficiently scrapes away highly adhesive and easily solidified oil and powder adhering substances, avoiding problems such as pipe diameter reduction, increased exhaust gas flow resistance, and reduced system vacuum caused by adhering substances, eliminating the need for manual cleaning during shutdown. At the same time, the protective component on the sealing cover protects the protruding part of the piston push-pull rod, ensuring the long-term stable operation of the cleaning component, reducing the risk of adhering substances accumulating to the point of completely clogging the pipe from the source, and ensuring continuous production. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] In the attached diagram: Figure 1 This is a plan view of a vacuum anti-clogging exhaust device according to this application; Figure 2 A three-dimensional schematic diagram of a vacuum anti-clogging exhaust device; Figure 3 This is a schematic diagram of the protective component structure; Figure 4 for Figure 3 Enlarged view of point A; Figure label: 1. Connecting assembly; 11. Vacuum settling cylinder; 12. Connecting port; 13. Slanted four-way pipe; 131. Vertical pipe; 132. Inclined pipe; 133. Exhaust port; 134. Sealing cap; 135. Opening groove; 2. Cleaning assembly; 21. Piston push-pull rod; 22. Anti-detachment end; 23. Piston part; 3. Protective assembly; 31. Protective cover; 32. Connecting end; 33. Waist groove; 34. Concave part; 35. Rotating shaft; 36. Clamping rod. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Reference Figures 1 to 4As shown, this utility model embodiment provides a vacuum anti-clogging exhaust device applied to a dryer, including a connecting component 1. The connecting component 1 includes a connecting unit, which includes a vacuum settling cylinder 11. The vacuum settling cylinder 11 can utilize the principle of reduced gas velocity to allow dust in the exhaust gas to be naturally separated according to particle size, laying the foundation for subsequent finer processing and smooth exhaust. The vacuum settling cylinder 11 has a connecting port 12, which is suitable for connecting to the exhaust port of the dryer through the connecting port 12. A pretreatment unit is provided at the other end of the vacuum settling cylinder 11. The pretreatment unit includes an inclined four-way pipe 13 connected to the other end of the vacuum settling cylinder 11. The inclined four-way pipe 13 is composed of vertical pipes 131 and inclined pipes 132 that are intersected and connected. The vertical pipes 131 and inclined pipes 132 cooperate with each other to provide a specific flow path for the exhaust gas, which facilitates the separation and discharge of dust and oily substances. One end of the vertical pipe 131 is connected to the vacuum settling cylinder 11. Furthermore, one end of the inclined pipe 132 has an exhaust port 133, in which dust rises with the oil-gas mixture and enters the inclined four-way pipe 13. After turning downwards, it is discharged from the exhaust port 133. At the same time, a sealing cover 134 is fixed at the end of the vertical pipe 131 and the inclined pipe 132 that are close to each other. The sealing cover 134 plays a sealing role, which can ensure the airtightness of the device when cleaning in a vacuum environment, and prevent vacuum leakage from affecting the operation of the device and the exhaust gas treatment effect. Furthermore, a cleaning component 2 is movably installed through the sealing cover 134 of both the vertical pipe 131 and the inclined pipe 132. The cleaning component 2 is used to clean the oil and powder adhering to the inner wall of the vertical pipe 131 and the inclined pipe 132. Furthermore, the cleaning assembly 2 includes two sets of piston push-pull rods 21 that move through the two sets of sealing covers 134. One end of each set of piston push-pull rods 21 extends into the vertical tube 131 and the inclined tube 132, respectively. A piston portion 23 is fixed to one end of each set of piston push-pull rods 21 that extends into the vertical tube 131 and the inclined tube 132. The piston portion 23 contacts the inner wall of the vertical tube 131 and the inclined tube 132. The end face of the piston portion 23 is made of polytetrafluoroethylene (PTFE). The smooth surface reduces dirt adhesion, and the end face of the piston 23 is a slightly convex arc surface, so that when the end face of the piston 23 contacts the inner wall of the inclined four-way pipe 13, a line contact is formed instead of a surface contact. This reduces the contact area, and the guiding effect of the arc surface makes it easier for dirt to be carried away by the airflow. In addition, an anti-detachment end 22 is fixed at the other end of the piston push rod 21. The anti-detachment end 22 can prevent the piston push rod 21 from falling out of the sealing cover 134 during the push-pull process, ensuring the stability of the cleaning component 2. It should be noted that in actual use, the piston push-pull rod 21 is pushed by external force and achieves stable reciprocating motion with the guidance of the sealing cover 134. It can drive the two sets of piston parts 23 to move alternately in the vertical tube 131 and the inclined tube 132. When the piston part 23 in the vertical tube 131 pushes downward, it can scrape off the adhering material on the tube wall and return it to the dryer. At the same time, the piston part 23 in the inclined tube 132 pulls outward in sync to avoid interference between the two movements. After the vertical cleaning is completed, the piston part 23 in the inclined tube 132 pushes forward again to scrape the adhering material to the next process receiver. Through this alternating action, the inner walls of the two pipes are cleaned without dead angles, thereby efficiently removing oil and powder adhering material from the tube wall, preventing cleaning blind spots caused by single-set movement, and ensuring that the inclined four-way pipe 13 always remains unobstructed. During operation, the exhaust gas from the dryer first enters the vacuum settling cylinder 11. The space inside the vacuum settling cylinder 11 is relatively open, causing the gas velocity to decrease upon entry. Due to differences in particle size, larger dust particles naturally settle and separate due to gravity and other factors, while very fine dust particles continue to rise with the light oil-gas mixture, subsequently entering the inclined four-way pipe 13 and exiting from the exhaust port 133 after a downward bend. As the operating time increases, the deposits on the wall of the inclined four-way pipe 13 will become increasingly thick due to the presence of oily substances, potentially clogging the pipe. Therefore, piston push-pull rods 21 are installed in both the vertical tube 131 and the inclined tube 132 of the oblique four-way pipe 13. These rods periodically push and pull the pipe wall. The vertical piston push-pull rod 21 can return the adhering material to the dryer, while the inclined piston push-pull rod 21 can push the adhering material to the next process receiver, thus effectively cleaning the adhering material and ensuring smooth operation of the vacuum exhaust outlet. Simultaneously, because the push-pull operation is performed in a vacuum environment, a sealing cap 134 is installed at the connection point. The sealing cap 134 reliably seals, ensuring the vacuum's tightness and enabling the device to operate stably under vacuum conditions.

[0019] like Figures 3-4 As shown, both sets of sealing covers 134 are provided with protective components 3 to cover the part of the piston push rod 21 that protrudes from the sealing cover 134 when not in use. The protective components 3 can protect the protruding part of the piston push rod 21 when it is not working, preventing external dust, debris, etc. from entering or causing bump damage to the push rod. The protective components 3 include a protective cover 31 that is sleeved on the piston push rod 21. The hollow column shape can completely cover the protruding part of the piston push rod 21, playing a role in physical isolation and protection. At the same time, one end of the protective cover 31 extends beyond the anti-detachment end 22 of the piston push rod 21, and a ring of bristles is provided on the inner wall of one end of the protective cover 31. The ring of bristles contacts the top surface of the anti-detachment end 22 to block the gap between one end of the protective cover 31 and the anti-detachment end 22, further preventing dust and other objects from entering from the gap. Furthermore, the bottom of the protective cover 31 has a connecting end 32, which overlaps the sealing cover 134. Multiple sets of waist grooves 33 are symmetrically formed on the protective cover 31, and transparent baffles (not shown in the figure) are embedded in each waist groove 33 to allow operators to observe the use of the piston push-pull rod 21. At least two sets of fixing parts are connected between the connecting end 32 and the sealing cover 134. Each fixing part includes a concave member 34 fixed to the bottom surface of the sealing cover 134, and a rotating shaft 3 is movably disposed within the concave member 34. 5. A vertically arranged snap-fit ​​rod 36 is fixed on the rotating shaft 35. By rotating the rotating shaft 35, the snap-fit ​​rod 36 can be driven to move accordingly, realizing the snap-fit ​​or release action. At the same time, both ends of the sealing cover 134 and the connecting end 32 are provided with opening slots 135 that are adapted to the diameter of the snap-fit ​​rod 36. One end of the snap-fit ​​rod 36 is threadedly connected to a knob (not shown in the figure). When the rotating shaft 35 is rotated, the snap-fit ​​rod 36 can be driven to snap into the opening slot 135. Then, by rotating the knob, it can be pressed tightly against the connecting end 32.

[0020] Working Principle: When the dryer generates exhaust gas, the exhaust gas first enters the vacuum settling cylinder 11 of the connecting component 1. The vacuum settling cylinder 11 has a spacious interior, causing the gas velocity to decrease upon entry. Due to differences in particle size, larger dust particles naturally settle and separate under gravity, while finer dust particles continue to rise with the lighter oil-gas mixture. Subsequently, this airflow enters the inclined four-way pipe 13 connected to the vacuum settling cylinder 11. Within the inclined four-way pipe 13, the airflow follows a specific path formed by the interaction of the vertical pipe 131 and the inclined pipe 132, finally exiting from the exhaust port 133 at one end of the inclined pipe 132, completing the initial transport and partial dust separation of the exhaust gas. During this process, the sealing cover 134 reliably seals, ensuring the device is in a vacuum state, providing a stable vacuum environment for subsequent cleaning operations and exhaust gas treatment, and preventing vacuum leakage from affecting the overall operating effect. As the device operates for an extended period, the presence of oily substances in the exhaust gas will gradually cause oily residue to adhere to the inner walls of the vertical pipe 131 and inclined pipe 132 of the four-way pipe 13. If not cleaned in time, this may clog the pipes. At this point, the cleaning component 2 is used for cleaning. External force pushes the piston push-pull rod 21, and with the guidance of the sealing cover 134, the piston push-pull rod 21 drives the piston part 23 to move alternately within the vertical pipe 131 and inclined pipe 132. When the piston part 23 in the vertical pipe 131 pushes downwards, the smooth PTFE surface of the piston part 23 reduces dirt adhesion, and the slightly convex arc-shaped surface forms line contact. Using the arc-shaped guiding effect, the residue adhering to the inner wall of the vertical pipe 131 is scraped off and flows back to the dryer. Simultaneously, the piston 23 inside the inclined tube 132 pulls outward to avoid interference between the two movements. After vertical cleaning is completed, the piston 23 inside the inclined tube 132 pushes forward again, scraping the adhering material on the inner wall of the inclined tube 132 to the next process receiver. Through this alternating action, the inner walls of the two pipes are cleaned without dead angles, effectively removing oil and powder adhering materials, preventing cleaning blind spots caused by single-group movement, and ensuring that the inclined four-way pipe 13 remains unobstructed. The anti-detachment end 22 at the other end of the piston push-pull rod 21 can effectively prevent the piston push-pull rod 21 from falling out of the sealing cover 134 during the push-pull process, ensuring the stability of the cleaning assembly 2.

[0021] When the cleaning component 2 is not in operation, the protective component 3 comes into play. The protective cover 31, which is fitted onto the piston push rod 21, is a hollow column that completely covers the protruding part of the piston push rod 21, providing physical isolation and protection to prevent external dust and debris from entering or causing impact damage to the push rod. The annular bristles on the inner wall of one end of the protective cover 31 contact the top surface of the anti-detachment end 22, blocking the gap between one end of the protective cover 31 and the anti-detachment end 22, further preventing dust and other debris from entering through the gap. At the same time, the connecting end 32 at the bottom of the protective cover 31 overlaps with the sealing cover 134, and the transparent baffle in the waist groove 33 allows the operator to easily check the usage status of the piston push rod 21. If it is necessary to remove the protective cover 31, rotate the knob at one end of the locking rod 36, and then rotate the rotating shaft 35 inside the concave part 34. The rotating shaft 35 drives the locking rod 36 to move, so that the locking rod 36 moves away from the opening slot 135. At this time, the protective cover 31 is loosened, which makes it easier to remove the protective cover 31.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A vacuum anti-clogging exhaust device, characterized in that: include The connecting assembly (1) includes a connecting unit connected to the exhaust port of the dryer. The connecting unit includes a vacuum settling cylinder (11). One end of the vacuum settling cylinder (11) is provided with a pretreatment unit that provides a specific flow path for the exhaust gas. The pretreatment unit includes an inclined four-way pipe (13) connected to the other end of the vacuum settling cylinder (11). The inclined four-way pipe (13) is composed of vertical pipes (131) and inclined pipes (132) that are connected to each other. The ends of the vertical pipes (131) and inclined pipes (132) that are close to each other are fixed with sealing caps (134). The cleaning component (2) is disposed on the pretreatment unit. The cleaning component (2) includes two sets of piston push rods (21) extending into the vertical tube (131) and the inclined tube (132). One end of the piston push rod (21) is fixed with a piston part (23), and the end face of the piston part (23) is a slightly convex arc surface. A protective component (3) is disposed on the sealing cover (134) for protecting the protruding portion of the piston push rod (21).

2. The vacuum anti-clogging exhaust device according to claim 1, characterized in that: The protective assembly (3) includes a protective unit sleeved on the piston push rod (21), the protective unit including a protective cover (31) sleeved on the piston push rod (21), the protective cover (31) being hollow columnar and able to completely cover the protruding part of the piston push rod (21).

3. The vacuum anti-clogging exhaust device according to claim 2, characterized in that: The piston push rod (21) has an anti-detachment end (22) fixed at the other end, and the piston push rod (21) is pushed by external force.

4. The vacuum anti-clogging exhaust device according to claim 1, characterized in that: The protective component (3) includes a protective cover (31) sleeved on the piston push rod (21). One end of the protective cover (31) extends beyond the anti-detachment end (22) of the piston push rod (21), and a ring of bristles is provided on the inner wall of one end of the protective cover (31). The ring of bristles contacts the top surface of the anti-detachment end (22) and is used to cover the gap between one end of the protective cover (31) and the anti-detachment end (22).

5. A vacuum anti-clogging exhaust device according to claim 4, characterized in that: The bottom of the protective cover (31) has a connecting end (32), which overlaps the sealing cover (134). Multiple sets of waist grooves (33) are symmetrically opened on the protective cover (31), and transparent baffles are embedded in the waist grooves (33).

6. A vacuum anti-clogging exhaust device according to claim 5, characterized in that: At least two sets of fixing parts are connected between the connecting end (32) and the sealing cover (134). The fixing part includes a concave part (34) fixed on the bottom surface of the sealing cover (134). A rotating shaft (35) is movably arranged in the concave part (34). A vertically arranged snap rod (36) is fixed on the rotating shaft (35). By rotating the rotating shaft (35), both ends of the sealing cover (134) and the connecting end (32) are provided with opening slots (135) that are adapted to the diameter of the snap rod (36). A knob is threaded to one end of the snap rod (36).

7. A vacuum anti-clogging exhaust device according to claim 1, characterized in that: The piston part (23) end face is made of polytetrafluoroethylene.

8. A vacuum anti-clogging exhaust device according to claim 1, characterized in that: The vacuum settling cylinder (11) has a connection port (12), one end of the vertical pipe (131) is connected to the vacuum settling cylinder (11), and one end of the inclined pipe (132) has an exhaust port (133).

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