A fume collecting device for a petroleum resin granulator

Abstract

The invention relates to the technical field of oil fume separation, and in particular to an oil fume collection device for a petroleum resin granulator, which comprises a mounting shell, a collecting tube, a filter sleeve and a cleaning unit. Under the action of a turbulent fan blade, the smoke flows in a spiral around the inner wall of a collecting chamber, and the oil mist in the smoke can adhere to the inner wall of the collecting tube under the action of centrifugal force. By setting the position of the filter sleeve, the smoke passes through the side wall of the filter sleeve and enters the interior of the baffle sleeve, and the oil mist carried in the smoke is filtered by the filter sleeve again. A first cleaning component in the cleaning unit cleans the inner wall of the collecting tube, and the first cleaning component cleans the oil mist adhered to the inner wall of the collecting tube to ensure that the oil mist adhered to the inner wall of the collecting tube can be separated from the inner wall of the collecting tube in time; when the amount of oil mist collected in the filter sleeve reaches a first preset level, a second cleaning component cleans the oil mist in the filter sleeve to ensure that the filter sleeve maintains a good filtering effect.

Description

Technical Field

[0001] The invention relates to the technical field of oil fume separation, and in particular to an oil fume collecting device for a petroleum resin granulator. Background Art

[0002] With the rapid development of the petroleum resin industry, the problem of a large amount of oil fume pollution generated during the production process has gradually become prominent, especially in the granulation process. In order to reduce the pollution to the operating environment and the impact on the health of workers, the application of oil fume collection devices is becoming more and more widespread. The common oil fume collection equipment on the market currently usually uses filter cotton as the filter medium to capture particulate matter and oil mist in the oil fume through physical filtration. However, a large amount of oil mist is easily accumulated inside the filter cotton. During the oil fume filtration process, the oil mist particles will gradually concentrate inside the filter cotton, causing it to be blocked, thereby reducing the filtration efficiency. As the use time increases, the oil mist accumulates more and more on the surface of the filter cotton, resulting in a significant decrease in the filtration effect of the filter cotton. In addition, the viscosity of the oil mist is high, and it often adheres to the inner wall of the collection device, making it difficult to slide off naturally. Some of the oil mist may escape during the collection process, causing secondary pollution. Summary of the invention

[0003] The invention provides an oil fume collecting device for a petroleum resin granulator, so as to solve the problem that the existing oil fume collecting device has low oil mist collecting efficiency.

[0004] The oil fume collecting device for a petroleum resin granulator of the present invention adopts the following technical scheme:

[0005] A fume collecting device for a petroleum resin granulator comprises a mounting shell, a collecting cylinder, a filter sleeve and a cleaning unit.

[0006] The mounting shell has a mounting cavity opening downward, and the side wall of the mounting shell is provided with an air inlet and an air outlet connecting the external environment and the mounting cavity; a baffle sleeve is provided inside the mounting cavity, and the baffle sleeve can prevent the smoke entering the mounting cavity through the air inlet from being directly discharged from the mounting cavity through the air outlet; the collecting tube has a collecting cavity opening upward, and the collecting tube is coaxially fixedly connected to the mounting shell, and the mounting cavity is connected to the collecting cavity; spoiler blades are provided inside the collecting tube, and the flow pattern of the smoke can be changed when passing through the spoiler blades; the filter sleeve is coaxially connected to the baffle sleeve, and the smoke can pass through the filter sleeve into the baffle sleeve, and the smoke is discharged from the mounting cavity through the air outlet after passing through the baffle sleeve; the cleaning unit includes a first cleaning component and a second cleaning component, and the first cleaning component is used to clean the inner wall of the collecting tube; when the amount of oil mist collected in the filter sleeve reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve.

[0007] Furthermore, the first cleaning assembly includes a spiral scraper and a driving member, the spiral scraper abuts against the inner wall of the collecting tube, and the driving member is used to drive the spiral scraper to reciprocate up and down.

[0008] Furthermore, the spiral direction of the spiral scraper is the same as the inclined direction of the spoiler blade.

[0009] Furthermore, the driving member includes a driving sleeve, a driving blade and a driving rod. The driving sleeve is coaxially rotatably connected to the inner wall of the retaining sleeve, and the driving blade is coaxially fixedly connected to the driving sleeve. When the smoke passes through the retaining sleeve, it can drive the driving blade to rotate; an annular wave groove is provided on the outer wall of the driving sleeve, one end of the driving rod is fixedly connected to the spiral scraper, and the other end of the driving rod is slidably provided in the annular wave groove, and the driving rod is always in a vertical state.

[0010] Furthermore, the filter sleeve is coaxially slidably connected to the retaining sleeve. An overlap length between the filter sleeve and the retaining sleeve is initially set. When the amount of oil mist collected in the filter sleeve increases, the overlap length between the filter sleeve and the retaining sleeve decreases.

[0011] Furthermore, the driving rod includes a fixed section and a telescopic section, the telescopic section is coaxially slidably connected to the fixed section, and a first elastic member is arranged between the telescopic section and the fixed section; a support frame is arranged inside the filter sleeve, the support frame is fixedly connected to the telescopic section of the driving rod, and the driving rod can drive the filter sleeve to reciprocate up and down.

[0012] Furthermore, the second cleaning member includes a cleaning cylinder, which is coaxially fixed inside the collecting cylinder through a support member, and the cleaning cylinder has a cleaning cavity with an opening facing upward, and the inner diameter of the cleaning cavity is equal to the outer diameter of the filter sleeve. When the amount of oil mist collected in the filter sleeve reaches a first preset level, the filter sleeve can enter the cleaning cavity; an opening connecting the cleaning cavity and the collecting cavity is provided below the cleaning cylinder, and a one-way valve is provided at the opening below the cleaning cylinder, and the conducting direction of the one-way valve is from top to bottom.

[0013] Furthermore, the support member includes a support ring, the inner wall of the support ring is fixedly connected to the upper end of the cleaning cylinder, the outer wall of the support ring is fixedly connected to the inner wall of the collecting cylinder, and the support ring is provided with a plurality of oil guide ports extending vertically therethrough.

[0014] Furthermore, the spiral scraper includes a hard plate and a flexible plate. The hard plate is fixedly connected to the telescopic section of the drive rod and does not contact the inner wall of the collecting tube. The flexible plate is fixedly connected to the hard plate and abuts against the inner wall of the collecting tube.

[0015] Furthermore, an oil discharge port connecting the collecting chamber with the external environment is arranged at the lower end of the collecting cylinder, and a locking valve is arranged at the lower end of the collecting cylinder, and the locking valve can block the oil discharge port.

[0016] The beneficial effects of the present invention are as follows: the oil fume collection device for a petroleum resin granulator of the present invention comprises a mounting shell, a collecting barrel, a filter sleeve and a cleaning unit. A large amount of smoke is generated in the process of producing petroleum resin. A vacuum pump is used to transport the smoke into the mounting cavity through the air inlet on the mounting shell. Under the action of the baffle sleeve, the smoke cannot be directly discharged from the mounting cavity through the air outlet. When the smoke flows into the collecting cavity, under the action of the turbulent fan blades, the smoke flows in a spiral around the inner side wall of the collecting cavity. When the smoke flows in a spiral, the oil mist in the smoke can adhere to the inner side wall of the collecting barrel under the action of centrifugal force. By setting the position of the filter sleeve, the smoke passes through the side wall of the filter sleeve and enters the interior of the baffle sleeve. When the smoke passes through the filter sleeve, the oil mist carried in the smoke is filtered by the filter sleeve again, and the smoke entering the retaining sleeve can be directly discharged from the installation cavity through the air outlet. When the smoke enters the installation cavity, the first cleaning component in the cleaning unit cleans the inner wall of the collecting cylinder. The first cleaning component cleans the oil mist adhering to the inner wall of the collecting cylinder to ensure that the oil mist adhering to the inner wall of the collecting cylinder can be separated from the inner wall of the collecting cylinder in time to prevent the oil mist on the inner wall of the collecting cylinder from being carried away by the smoke again; when the amount of oil mist collected in the filter sleeve reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve to ensure that the filter sleeve maintains a good filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic structural diagram of an oil fume collecting device for a petroleum resin granulator provided in an embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of an oil fume collecting device for a petroleum resin granulator provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0022] Figure 5 for Figure 2 A partial enlarged view of point C in the middle;

[0023] Figure 6 for Figure 2A partial enlarged view of point D in the middle;

[0024] Figure 7 The present invention provides a schematic diagram of the cross-section structure of a fume collecting device for a petroleum resin granulator provided in an embodiment of the present invention.

[0025] In the figure: 110, mounting shell; 111, mounting cavity; 112, air inlet; 113, air outlet; 120, retaining sleeve; 130, collecting cylinder; 131, collecting cavity; 132, locking valve; 140, spoiler blade; 150, filter sleeve; 210, spiral scraper; 211, hard plate; 212, flexible plate; 220, driving sleeve; 230, driving blade; 240, driving rod; 241, fixed section; 242, telescopic section; 243, first spring; 250, supporting frame; 310, cleaning cylinder; 320, supporting ring; 321, oil guide port; 330, one-way valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figures 1 to 7 As shown, an oil fume collecting device for a petroleum resin granulator provided in an embodiment of the present invention includes a mounting shell 110, a collecting cylinder 130, a filter sleeve 150 and a cleaning unit.

[0030] The interior of the mounting shell 110 is hollow, and the hollow chamber inside the mounting shell 110 is the mounting cavity 111. The mounting shell 110 is vertically arranged, and an opening connecting the external environment with the mounting cavity 111 is arranged at the lower end of the mounting shell 110. The side wall of the mounting shell 110 is provided with an air inlet 112 and an air outlet 113 connecting the external environment with the mounting cavity 111. The air inlet 112 and the air outlet 113 are arranged in a coaxial state, and the air inlet 112 and the air outlet 113 are arranged on the opposite side walls of the mounting shell 110. A large amount of smoke will be generated in the process of producing petroleum resin, and a vacuum pump is used to transport the smoke through the air inlet 112 on the mounting shell 110 to the mounting cavity 111. A baffle sleeve 120 is arranged inside the installation cavity 111. The baffle sleeve 120 is coaxially arranged with the installation cavity 111 and penetrates up and down. The baffle sleeve 120 is connected to the inner wall of the installation shell 110 by using a baffle plate. Under the joint action of the outer wall of the baffle sleeve 120 and the baffle plate, when the smoke enters the installation cavity 111 through the air inlet 112, the smoke cannot be discharged from the installation cavity 111 through the air outlet 113.

[0031] The collecting tube 130 is vertically arranged, and the interior of the collecting tube 130 is hollow. The hollow chamber inside the collecting tube 130 is a collecting chamber 131. An opening connecting the external environment and the collecting chamber 131 is arranged at the upper end of the collecting tube 130. The collecting tube 130 is arranged below the mounting shell 110. The collecting tube 130 is fixedly connected to the mounting shell 110, and the mounting chamber 111 is connected to the collecting chamber 131. After the smoke enters the mounting chamber 111, the smoke first enters the collecting chamber 131, and the smoke entering the collecting chamber 131 is discharged from the mounting chamber 111 through the blocking sleeve 120 and the air outlet 113 in turn. The collection tube 130 is internally provided with turbulent blades 140. Specifically, the turbulent blades 140 are arranged at the upper end of the collection tube 130. The flow pattern of the smoke can be changed when passing through the turbulent blades 140. When the smoke passes through the turbulent blades 140, the flow pattern of the smoke is converted into a spiral flow. The oil mist in the smoke can adhere to the inner wall of the collection tube 130 under the action of centrifugal force.

[0032] The filter sleeve 150 is vertically arranged, the upper end of the filter sleeve 150 is arranged in the installation cavity 111, the lower end of the filter sleeve 150 is arranged in the collection cavity 131, the filter sleeve 150 is filter cotton, and the upper end of the filter sleeve 150 is coaxially connected to the baffle sleeve 120. When the smoke flows spirally in the collection cavity 131, it can pass through the side wall of the filter sleeve 150. When the smoke passes through the filter sleeve 150, the oil mist in the smoke can be intercepted by the filter sleeve 150, so that the smoke no longer carries the oil mist when passing through the baffle sleeve 120. After passing through the baffle sleeve 120, the smoke is discharged from the installation cavity 111 through the air outlet 113.

[0033] The cleaning unit includes a first cleaning component and a second cleaning component. The first cleaning component is used to clean the inner wall of the collection tube 130. Specifically, the flow mode of the smoke in the collection chamber 131 is spiral flow. The oil mist in the smoke can adhere to the inner wall of the collection tube 130 under the action of centrifugal force. If the oil mist adhering to the inner wall of the collection tube 130 is not cleaned in time, the flow of the smoke will easily take away the oil mist on the inner wall of the collection tube 130 again. When the amount of oil mist collected in the filter sleeve 150 reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve 150. As the filter sleeve 150 filters the smoke, the oil mist in the smoke gradually accumulates inside the filter sleeve 150. As the oil mist inside the filter sleeve 150 accumulates, the filtering effect of the filter sleeve 150 on the smoke gradually decreases. To ensure that the filter sleeve 150 has a good filtering effect, when the amount of oil mist collected in the filter sleeve 150 reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve 150.

[0034] The oil fume collecting device for a petroleum resin granulator of the present invention generates a large amount of smoke during the production of petroleum resin. A vacuum pump is used to transport the smoke to the installation cavity 111 through the air inlet 112 on the installation shell 110. Under the action of the baffle sleeve 120, the smoke cannot be directly discharged from the installation cavity 111 through the air outlet 113. When the smoke flows into the collection cavity 131, under the action of the turbulent fan blades 140, the smoke flows in a spiral around the inner wall of the collection cavity 131. When the smoke flows in a spiral, the oil mist in the smoke can adhere to the inner wall of the collection cylinder 130 under the action of centrifugal force. By setting the position of the filter sleeve 150, the smoke passes through the side wall of the filter sleeve 150 and then enters the interior of the baffle sleeve 120. When the smoke passes through the filter sleeve 150, The oil mist carried in the flue gas is filtered again by the filter sleeve 150, and the flue gas entering the blocking sleeve 120 can be directly discharged from the installation cavity 111 through the air outlet 113. In the process of the flue gas entering the installation cavity 111, the first cleaning component in the cleaning unit cleans the inner wall of the collecting cylinder 130. The first cleaning component cleans the oil mist adhering to the inner wall of the collecting cylinder 130 to ensure that the oil mist adhering to the inner wall of the collecting cylinder 130 can be separated from the inner wall of the collecting cylinder 130 in time to prevent the oil mist on the inner wall of the collecting cylinder 130 from being carried away by the flue gas again; when the amount of oil mist collected in the filter sleeve 150 reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve 150 to ensure that the filter sleeve 150 maintains a good filtering effect.

[0035] In one embodiment, the first cleaning component includes a spiral scraper 210 and a driving member, the spiral scraper 210 abuts against the inner wall of the collecting barrel 130, and the driving member is used to drive the spiral scraper 210 to reciprocate up and down. Specifically, the driving member is a driving cylinder, the driving cylinder is vertically arranged, and the driving cylinder can be telescopically arranged. One end of the driving cylinder is fixedly connected to the inner wall of the collecting barrel 130, and the other end of the driving cylinder is fixedly connected to the spiral scraper 210. When the length of the driving cylinder changes, the spiral scraper 210 scrapes and cleans the inner wall of the collecting barrel 130. When the spiral scraper 210 cleans the inner wall of the collecting barrel 130, it ensures that the oil mist adhering to the inner wall of the collecting barrel 130 can be separated from the side wall of the collecting barrel 130.

[0036] In one of the embodiments, the spiral direction of the spiral scraper 210 is the same as the inclination direction of the spoiler blades 140. When the spiral scraper 210 is arranged in the collecting chamber 131, the spiral scraper 210 has a certain thickness in the radial direction of the collecting tube 130. The setting of the spiral scraper 210 easily obstructs the spiral flow of the flue gas. By setting the spiral direction of the spiral scraper 210 to be the same as the inclination direction of the spoiler blades 140, the obstruction of the spiral scraper 210 to the spiral flow of the flue gas is reduced.

[0037] In one embodiment, the driving member includes a driving sleeve 220, a driving blade 230 and a driving rod 240. The driving sleeve 220 is coaxially rotatably connected to the inner side wall of the blocking sleeve 120, and the length of the driving sleeve 220 in the vertical direction is less than the length of the blocking sleeve 120 in the vertical direction. The driving blade 230 is coaxially fixedly connected to the driving sleeve 220, and the smoke can drive the driving blade 230 to rotate when passing through the blocking sleeve 120. An annular wave groove is provided on the outer wall of the driving sleeve 220, and the driving rod 240 is vertically arranged. The driving rod 240 is connected to the retaining sleeve 120 for sliding up and down. The lower end of the driving rod 240 is fixedly connected to the spiral scraper 210, and a slider is provided on the upper end of the driving rod 240. The slider is slidably arranged in the annular wave groove. When the flue gas passes through the retaining sleeve 120, the driving blade 230 drives the driving sleeve 220 to rotate synchronously, and the slider on the driving rod 240 slides in the annular wave groove on the outer wall of the driving sleeve 220, so that the driving rod 240 moves in the vertical direction, and the driving rod 240 drives the spiral scraper 210 to move. When the flue gas is purified, the driving rod 240 reciprocates up and down. In other words, during the process of purifying the flue gas, the spiral scraper 210 is always in a state of cleaning the inner wall of the collecting cylinder 130.

[0038] In one of the embodiments, the filter sleeve 150 is coaxially slidably connected with the baffle sleeve 120, and a preset overlapping length is initially set between the filter sleeve 150 and the baffle sleeve 120. In other words, the area where the filter sleeve 150 plays the function of filtering smoke is the area where the filter sleeve 150 does not overlap with the baffle sleeve 120. As the filter sleeve 150 filters the smoke, the oil mist in the smoke is gradually intercepted by the filter sleeve 150. When the oil mist in the smoke enters the interior of the filter sleeve 150, the oil mist gradually deposits to the lower end of the filter sleeve 150 under the action of its own gravity, and the filtering effect of the lower end of the filter sleeve 150 gradually decreases. At the same time, the overall weight of the filter sleeve 150 increases. At this time, the filter sleeve 150 moves downward relative to the baffle sleeve 120, and the overlapping length between the filter sleeve 150 and the baffle sleeve 120 decreases, then the area where the filter sleeve 150 plays the function of filtering smoke increases relatively. However, at this time, the filtering effect of the lower end of the filter sleeve 150 is reduced. Generally speaking, the overall filtering effect of the filter sleeve 150 for filtering smoke remains roughly unchanged.

[0039] In one embodiment, the driving rod 240 includes a fixed section 241 and a telescopic section 242, the telescopic section 242 is coaxially slidably connected with the fixed section 241, specifically, the fixed section 241 is arranged above the telescopic section 242, the fixed section 241 is slidably connected with the stopper sleeve 120 up and down, the lower end of the fixed section 241 is provided with a plug-in slot with an opening facing downward, the upper end of the telescopic section 242 is coaxially plugged into the plug-in slot, the upper end of the telescopic section 242 can slide up and down in the plug-in slot, a first elastic member is arranged between the telescopic section 242 and the fixed section 241, specifically, the first elastic member is a first spring 243, the first spring 243 is vertically arranged, the first spring 243 is arranged in the plug-in slot, the upper end of the first spring 243 is fixedly connected with the fixed section 241, and the lower end of the first spring 243 is fixedly connected with the telescopic section 242. A support frame 250 is arranged inside the filter sleeve 150, and the support frame 250 is used to ensure that the filter sleeve 150 maintains a cylindrical structure. The support frame 250 has a position that penetrates the filter sleeve 150 , and the position where the support frame 250 penetrates the filter sleeve 150 is fixedly connected to the telescopic section 242 of the driving rod 240 . In the initial state, the filter sleeve 150 has a certain weight. Under the action of the weight of the filter sleeve 150 itself, the first spring 243 is in a stretched state, and the length of the first spring 243 is in a stable state. When the upper end of the driving rod 240 reciprocates in the up and down directions, the driving rod 240 can drive the filter sleeve 150 to reciprocate up and down synchronously. As the filter sleeve 150 filters the flue gas, the oil mist in the flue gas is gradually intercepted by the filter sleeve 150. When the oil mist in the flue gas enters the inside of the filter sleeve 150, the oil mist gradually deposits to the lower end of the filter sleeve 150 under the action of its own gravity. The overall weight of the filter sleeve 150 increases, the length of the first spring 243 is gradually lengthened, and the overall length of the driving rod 240 increases. The position of the lower end of the driving rod 240 connected to the spiral scraper 210 for up and down reciprocating motion changes, and the position of the spiral scraper 210 cleaning the inner wall of the collecting cylinder 130 changes, thereby ensuring that each position of the inner wall of the collecting cylinder 130 can be cleaned by the spiral scraper 210.

[0040] In one embodiment, the second cleaning member includes a cleaning cylinder 310, which is coaxially fixed inside the collecting cylinder 130 through a support member. In the initial state, there is a certain distance between the upper end of the cleaning cylinder 310 and the lower end of the filter sleeve 150. The interior of the cleaning cylinder 310 is hollow, and the hollow chamber inside the cleaning cylinder 310 is a cleaning chamber. The upper end of the cleaning cylinder 310 is provided with an opening connecting the cleaning chamber and the collecting chamber 131. The inner diameter of the cleaning chamber is equal to the outer diameter of the filter sleeve 150. When the amount of oil mist collected in the filter sleeve 150 reaches a first preset level, the weight of the filter sleeve 150 increases to a certain level. The weight of the filter sleeve 150 acts on the driving rod 240 through the support frame 250, and the overall length of the driving rod 240 is synchronously extended. At this time, the lower end of the filter sleeve 150 can enter the cleaning chamber through the opening at the upper end of the cleaning cylinder 310. An opening connecting the cleaning chamber and the collecting chamber 131 is provided below the cleaning cylinder 310, and a one-way valve 330 is provided at the opening below the cleaning cylinder 310. The conducting direction of the one-way valve 330 is from top to bottom. Under the action of the one-way valve 330, when the filter sleeve 150 moves downward, the filter sleeve 150 gradually enters the interior of the cleaning cylinder 310, and the opening at the upper end of the cleaning cylinder 310 is blocked by the lower end of the filter sleeve 150, and the air pressure in the cleaning chamber gradually increases. Under the action of the air pressure, the one-way valve 330 is turned on, and the gas in the cleaning cylinder 310 escapes from the cleaning chamber through the one-way valve 330. When the filter sleeve 150 moves upward, the one-way valve 330 is in a blocked state, and the lower end of the filter sleeve 150 is gradually withdrawn from the cleaning chamber, and the air pressure in the cleaning chamber gradually decreases. At this time, the oil mist accumulated at the lower end of the filter sleeve 150 is drawn into the cleaning chamber, thereby achieving the cleaning of the filter sleeve 150.

[0041] In one embodiment, the support member includes a support ring 320, the inner wall of the support ring 320 is fixedly connected to the upper end of the cleaning cylinder 310, the outer wall of the support ring 320 is fixedly connected to the inner wall of the collecting cylinder 130, and a plurality of oil guide ports 321 penetrating upward and downward are provided on the support ring 320. Specifically, by providing the support ring 320, it is ensured that the cleaning cylinder 310 maintains a stable state in the collecting chamber 131, and the oil guide ports 321 are provided on the support ring 320, so that the oil mist cleaned from the inner wall of the collecting cylinder 130 by the spiral scraper 210 can flow smoothly to the lower end of the collecting chamber 131.

[0042] In one embodiment, the spiral scraper 210 includes a hard plate 211 and a flexible plate 212. The hard plate 211 is fixedly connected to the telescopic section 242 of the driving rod 240, and the hard plate 211 does not contact the inner wall of the collecting cylinder 130; the flexible plate 212 is fixedly connected to the hard plate 211, and the flexible plate 212 abuts against the inner wall of the collecting cylinder 130. Specifically, by setting the area where the spiral scraper 210 contacts the inner wall of the collecting cylinder 130 as the flexible plate 212, the damage to the inner wall of the collecting cylinder 130 by the spiral scraper 210 is reduced, and at the same time, the cleaning degree of the oil mist on the inner wall of the collecting cylinder 130 by the spiral scraper 210 is improved.

[0043] In one of the embodiments, an oil discharge port connecting the collection chamber 131 with the external environment is provided at the lower end of the collection tube 130. A locking valve 132 is provided at the lower end of the collection tube 130. The locking valve 132 can block the oil discharge port. After a preset time period of flue gas purification, the staff opens the locking valve 132 to release the blocking of the oil discharge port, and the oil mist at the lower end of the collection chamber 131 can flow out of the collection chamber 131.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fume collecting device for a petroleum resin granulator, characterized in that: include: The mounting shell has a mounting cavity with an opening facing downward, and the side wall of the mounting shell is provided with an air inlet and an air outlet connecting the external environment with the mounting cavity; a baffle is provided inside the mounting cavity, and the baffle can prevent the smoke entering the mounting cavity through the air inlet from being directly discharged from the mounting cavity through the air outlet; The collecting tube has a collecting chamber with an opening facing upwards, the collecting tube is coaxially fixedly connected to the mounting shell, and the mounting chamber is communicated with the collecting chamber; a turbulent fan blade is arranged inside the collecting tube, and the flow mode of the smoke can be changed when passing through the turbulent fan blade; The filter sleeve is coaxially connected to the retaining sleeve, and the smoke can pass through the filter sleeve into the retaining sleeve, and the smoke is discharged from the installation cavity through the air outlet after passing through the retaining sleeve; The cleaning unit includes a first cleaning component and a second cleaning component. The first cleaning component is used to clean the inner wall of the collecting cylinder. When the amount of oil mist collected in the filter sleeve reaches a first preset level, the second cleaning component cleans the oil mist in the filter sleeve. The first cleaning assembly includes a spiral scraper and a driving member, the spiral scraper abuts against the inner wall of the collecting tube, and the driving member is used to drive the spiral scraper to reciprocate up and down; The driving member includes a driving sleeve, a driving blade and a driving rod. The driving sleeve is coaxially connected to the inner wall of the retaining sleeve, and the driving blade is coaxially fixedly connected to the driving sleeve. When the smoke passes through the retaining sleeve, the driving blade can be driven to rotate; an annular wave groove is arranged on the outer wall of the driving sleeve, one end of the driving rod is fixedly connected to the spiral scraper, and the other end of the driving rod is slidably arranged in the annular wave groove, and the driving rod is always in a vertical state; The filter sleeve and the retaining sleeve are coaxially slidably connected. An overlap length between the filter sleeve and the retaining sleeve is initially set. When the amount of oil mist collected in the filter sleeve increases, the overlap length between the filter sleeve and the retaining sleeve decreases.

2. The oil fume collecting device for a petroleum resin granulator according to claim 1, characterized in that: The spiral direction of the spiral scraper is the same as the inclination direction of the spoiler blade.

3. The oil fume collecting device for a petroleum resin granulator according to claim 1, characterized in that: The driving rod includes a fixed section and a telescopic section, the telescopic section is coaxially slidably connected with the fixed section, and a first elastic member is arranged between the telescopic section and the fixed section; a support frame is arranged inside the filter sleeve, the support frame is fixedly connected with the telescopic section of the driving rod, and the driving rod can drive the filter sleeve to reciprocate up and down.

4. The oil fume collecting device for a petroleum resin granulator according to claim 3, characterized in that: The second cleaning member includes a cleaning cylinder, which is coaxially fixed inside the collecting cylinder through a supporting member, and has a cleaning cavity with an upward opening, and an inner diameter of the cleaning cavity is equal to an outer diameter of the filter sleeve, and when the amount of oil mist collected in the filter sleeve reaches a first preset level, the filter sleeve can enter the cleaning cavity; an opening connecting the cleaning cavity and the collecting cavity is provided below the cleaning cylinder, and a one-way valve is provided at the opening below the cleaning cylinder, and the conducting direction of the one-way valve is from top to bottom.

5. The oil fume collecting device for a petroleum resin granulator according to claim 4, characterized in that: The support member comprises a support ring, the inner wall of the support ring is fixedly connected to the upper end of the cleaning cylinder, the outer wall of the support ring is fixedly connected to the inner wall of the collecting cylinder, and the support ring is provided with a plurality of oil guide ports penetrating up and down.

6. The oil fume collecting device for a petroleum resin granulator according to claim 1, characterized in that: The spiral scraper includes a hard plate and a flexible plate. The hard plate is fixedly connected to the telescopic section of the driving rod and does not contact the inner wall of the collecting tube. The flexible plate is fixedly connected to the hard plate and abuts against the inner wall of the collecting tube.

7. The oil fume collecting device for a petroleum resin granulator according to claim 1, characterized in that: An oil discharge port communicating the collection chamber with the external environment is arranged at the lower end of the collection tube, and a locking valve is arranged at the lower end of the collection tube, and the locking valve can block the oil discharge port.

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