A method and device for treating tail gas in tar processing

Abstract

The present invention discloses a method and device for tail gas treatment in tar processing, relating to tail gas treatment technology, including a discharge pipe. A loading arm is used to drive the discharge pipe to be docked with the tank truck interface. A docking mechanism is installed at the pipe orifice of the discharge pipe. The docking mechanism includes an inner connecting pipe and an outer connecting pipe that are sleeved with each other. An exhaust chamber is formed between the outer side wall of the inner connecting pipe and the inner side wall of the outer connecting pipe. The exhaust chamber is used to discharge the gas in the tank. The present invention provides a method and device for tail gas treatment in tar processing. When the outer connecting pipe is docked and sealed with the tank truck interface, liquid asphalt is output through the inner connecting pipe. At this time, the gas in the tank and the gas volatilized from the liquid asphalt are centrally discharged into the outdoor environment or the recovery space through the exhaust chamber. In this way, the original gas in the asphalt tank truck and a large amount of yellow asphalt fumes volatilized from the high-temperature liquid asphalt are centrally treated, avoiding environmental pollution and ensuring the physical health of the staff.

Description

Technical Field

[0001] The invention relates to tail gas treatment technology, and in particular to a tail gas treatment method and device for tar processing. Background Art

[0002] Modified asphalt is a product that is modified through processing. It has a higher softening point and coking value. It is a black brittle block solid at room temperature, shiny and smelly, and toxic. Modified asphalt is mainly used in the electrolytic aluminum industry to produce pre-baked anode blocks and manufacture high-power electrode rods. It can also be used as an electrode binder. Due to the high freezing point of modified asphalt, the temperature of liquid modified asphalt needs to be maintained at around 200°C during loading operations. The composition of asphalt flue gas is complex, including common atmospheric pollutants such as particulate dust, carbon monoxide, sulfur dioxide, nitrogen oxides, etc., as well as toxic substances such as benzopyrene, benzanthracene, carbazole, dibenzofuran and 4-formylbiphenyl. Long-term excessive intake of asphalt fumes by the human body can cause symptoms such as dermatitis, conjunctivitis, chest tightness, and headaches. In particular, benzopyrene is a strong carcinogen that seriously endangers human health after entering the human body through the respiratory tract and skin. When existing high-temperature liquid asphalt is loaded into asphalt tank trucks, it is usually driven by a loading arm to drive a loading pipe to connect with the interface on the asphalt tank truck, and then the asphalt is output.

[0003] For example, the patent with the authorization announcement number CN221085118U and the authorization announcement date June 7, 2024, is named as a patent for an exhaust gas treatment system for an asphalt storage tank, including an asphalt storage tank, an exhaust gas condenser, a nitrogen self-operated regulating valve, a pressure regulating valve, a single suction valve and a single exhalation valve. An exhaust gas condenser is provided above the asphalt storage tank, and the top opening of the exhaust gas condenser is respectively connected to the single exhalation valve and the pressure regulating valve. The nitrogen inlet pipe is connected to the asphalt storage tank, and a nitrogen self-operated regulating valve and a single suction valve are provided on the nitrogen inlet pipe; the outlet of the pressure regulating valve is connected to the exhaust cleaning tower. The advantages of this patent are: 1) The single suction valve and the single exhalation valve are used as safety measures to avoid accidents of overpressure rupture of the asphalt storage tank; 2) The addition of an exhaust gas condenser can reduce the exhaust gas emissions of the asphalt storage tank, reduce the loss of asphalt products, avoid clogging the venturi of the subsequent exhaust cleaning tower, and reduce the amount of new washing oil used in the subsequent exhaust cleaning tower.

[0004] The shortcoming of the existing technology is that during the high-temperature loading process of asphalt, the original gas in the asphalt tanker and the large amount of yellow asphalt smoke volatilized by the high-temperature liquid asphalt will be discharged into the external environment through the interface on the asphalt tanker, causing pollution to the surrounding environment and also damaging the health of the staff around the asphalt tanker. Summary of the invention

[0005] The object of the present invention is to provide a method and device for treating tail gas for tar processing, so as to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An exhaust gas treatment device for tar processing, comprising a discharge pipe, a loading arm for driving the discharge pipe to dock with the tank truck interface, a docking mechanism is installed at the pipe orifice of the discharge pipe, the docking mechanism includes an inner connecting pipe and an outer connecting pipe that are sleeved with each other, an exhaust chamber is formed between the outer side wall of the inner connecting pipe and the inner side wall of the outer connecting pipe, the inner connecting pipe is used for outputting liquid asphalt, the outer connecting pipe is used for docking with the tank truck interface and sealing, and the exhaust chamber is used for discharging the gas in the tank.

[0008] For the above-mentioned exhaust gas treatment device for tar processing, a discharge pipe is communicated with the outer connecting pipe, and the discharge pipe is used for discharging the gas to the external environment.

[0009] For the above-mentioned exhaust gas treatment device for tar processing, the inner diameter of the outer connecting pipe is the same as the inner diameter of the tank truck interface.

[0010] For the above-mentioned exhaust gas treatment device for tar processing, a stirring unit is installed at the bottom of the inner connecting pipe, an auxiliary gas outlet unit is installed at the bottom of the exhaust chamber, and a synchronous driving unit is connected between the stirring unit and the auxiliary gas outlet unit.

[0011] For the above-mentioned exhaust gas treatment device for tar processing, the stirring unit includes a connecting ring rotatably installed at the bottom of the inner connecting pipe, the inner side of the connecting ring is connected with an inner ring part through a first connecting piece, the inner ring part is located at the bottom of the inner connecting pipe, and a plurality of stirring rods are fixed along the circumferential direction on the inner side wall of the inner ring part.

[0012] For the above-mentioned exhaust gas treatment device for tar processing, the auxiliary gas outlet unit includes a second connecting piece connected to the outside of the connecting ring, a first outer ring part is fixedly provided at one end of the second connecting piece close to the exhaust chamber, a plurality of fan blades are arranged along the circumferential direction on the outer side wall of the first outer ring part, and the outer side walls of the plurality of fan blades are connected through a second outer ring part.

[0013] For the above-mentioned exhaust gas treatment device for tar processing, the synchronous driving unit includes a connecting rod fixedly connected to the first outer ring part, an outer gear ring is fixedly connected to the top of the connecting rod, a driving motor is installed on the top of the outer connecting pipe, a connecting shaft is rotatably penetrated through the outer connecting pipe, the top of the connecting shaft is connected to the output shaft of the driving motor, the bottom of the connecting shaft extends into the exhaust chamber and is fixedly provided with a driving gear, and the driving gear meshes with the outer gear ring.

[0014] For the above-mentioned exhaust gas treatment device for tar processing, the fan blade is rotatably connected between the first outer ring part and the second outer ring part through a rotating shaft, and a first torsion spring is connected between the rotating shaft and the first outer ring part.

[0015] The above-mentioned tail gas treatment device for tar processing, a rubber sealing ring is installed at the bottom of the external connecting pipe, an annular groove is opened at the top of the tanker interface, and the rubber sealing ring and the annular groove are arranged in corresponding cooperation.

[0016] A tail gas treatment method for tar processing, based on the above-mentioned tail gas treatment device for tar processing, includes the following steps:

[0017] The loading arm drives the discharge pipe to move above the tanker interface and makes the docking mechanism dock with the tanker interface. Sealing is achieved through the docking of the external connecting pipe with the tanker interface, and liquid asphalt is output through the internal connecting pipe.

[0018] In the above technical solution, the present invention provides a tail gas treatment method and device for tar processing. When the external connecting pipe is docked and sealed with the tanker interface, liquid asphalt is output through the internal connecting pipe. At this time, the gas in the tank and the gas volatilized from the liquid asphalt are centrally discharged to the outdoor environment or the recovery space. In this way, the original gas in the asphalt tanker and a large amount of yellow asphalt fumes volatilized from the high-temperature liquid asphalt are centrally treated, avoiding environmental pollution and ensuring the physical health of the staff. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a working schematic diagram of the tail gas treatment device for tar processing provided by an embodiment of the present invention.

[0021] Figure 2 It is a cross-sectional view of the tail gas treatment device for tar processing provided by an embodiment of the present invention.

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the tail gas treatment device for tar processing provided by another embodiment of the present invention.

[0023] Figure 4 It is a partial three-dimensional structure schematic diagram of the tail gas treatment device for tar processing from the first perspective provided by another embodiment of the present invention.

[0024] Figure 5 It is a partial three-dimensional structure schematic diagram of the tail gas treatment device for tar processing from the second perspective provided by another embodiment of the present invention.

[0025] Figure 6 For the present invention Figure 5 Partial enlarged view at X.

[0026] Figure 7 Schematic diagram of the three-dimensional structure of the auxiliary gas outlet unit provided by another embodiment of the present invention.

[0027] Figure 8 Cross-sectional view of the tail gas treatment device for tar processing provided by another embodiment of the present invention.

[0028] Figure 9 Cross-sectional view of the tail gas treatment device for tar processing provided by still another embodiment of the present invention.

[0029] Figure 10 Cross-sectional view of the tail gas treatment device for tar processing provided by another embodiment of the present invention.

[0030] Figure 11 For the present invention Figure 10 Partial enlarged view at Y of the present invention.

[0031] Figure 12 Partial three-dimensional structure schematic diagram of the auxiliary gas outlet unit and the annular driving cover provided by another embodiment of the present invention.

[0032] Explanation of reference numerals:

[0033] 1, inner connecting pipe; 11, fixing rod; 12, bidirectional telescopic member; 13, first connecting block; 14, second connecting block; 15, elastic telescopic rod; 16, friction boss; 17, annular driving cover; 18, annular outer edge; 2, outer connecting pipe; 21, sealing slider; 22, limiting spring; 23, stop baffle; 24, trapezoidal limiting block; 25, spring connecting member; 26, inclined docking portion; 3, exhaust chamber; 31, stirring unit; 311, connecting ring; 312, inner ring portion; 313, stirring rod; 32, auxiliary gas outlet unit; 321, first outer ring portion; 322, fan blade; 323, second outer ring portion; 324, rotating shaft; 331, connecting component; 332, external gear ring; 333, driving motor; 334, connecting shaft; 335, driving gear; 4, discharge pipe; 5, tanker interface. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] As Figure 1-12As shown in the figure, an exhaust gas treatment device for tar processing provided by an embodiment of the present invention includes a discharge pipe. A loading arm is used to drive the discharge pipe to dock with the tanker interface 5. A docking mechanism is installed at the pipe orifice of the discharge pipe. The docking mechanism includes an inner connecting pipe 1 and an outer connecting pipe 2 that are sleeved with each other. An exhaust chamber 3 is formed between the outer side wall of the inner connecting pipe 1 and the inner side wall of the outer connecting pipe 2. The inner connecting pipe 1 is used to output liquid asphalt. The outer connecting pipe 2 is used to dock with the tanker interface 5 and seal it. The exhaust chamber 3 is used to concentrate and discharge the gas in the tank.

[0036] Specifically in this embodiment, the loading arm (not shown in the figure) is a mechanically structured automatic control, generally an automatic robotic arm, which can drive the discharge pipe to move to the tanker interface 5. The loading arm is a prior art and will not be elaborated here. The discharge pipe (not shown in the figure) is used to transport liquid asphalt to the tanker interface 5. The discharge pipe is preferably a flexible pipe, which is convenient for controlling the movement of the pipe orifice of the discharge pipe through the loading arm. It also includes a tanker for transporting liquid asphalt. A tanker interface 5 is provided at the top of the tanker. The installation of the loading arm and the discharge pipe is also to cooperate with the position where the tanker docks to transport liquid asphalt. The loading arm actually controls the position of the pipe orifice of the discharge pipe because the discharge pipe is a flexible pipe. The docking mechanism is used to dock the discharge pipe with the tanker interface 5. The diameter of the inner connecting pipe 1 is smaller than that of the outer connecting pipe 2. The inner connecting pipe 1 is a pipe with both ends communicating. The outer connecting pipe 2 is a pipe structure with the lower end communicating and the upper end closed. The upper ends of the inner connecting pipe 1 and the outer connecting pipe 2 are hermetically connected. Preferably, the inner diameter of the outer connecting pipe 2 is equal to the inner diameter of the tanker interface 5. This is to ensure that the exhaust chamber 3 can cover the tanker interface 5, so that the original gas in the asphalt tanker and the yellow asphalt fumes (hereinafter referred to as the mixed gas) volatilized from the high-temperature liquid asphalt can only enter the exhaust chamber 3. The main function of the outer connecting pipe 2 is to dock with the tanker interface 5 and ensure the existence of the exhaust chamber 3, which is convenient for outputting the mixed gas. Specifically during operation, after the tanker docks, the loading arm drives the inner connecting pipe 1 to move, thereby driving the entire docking mechanism to move. At the same time, the discharge pipe also moves accordingly. Then, the docking mechanism is pressed against the tanker interface 5 to dock the outer connecting pipe 2 with the tanker interface 5. After docking is completed, liquid asphalt is input into the tanker through the discharge pipe. At this time, the liquid asphalt passes through the tanker interface 5 and enters the tanker. At the same time, the mixed gas is squeezed out during asphalt filling and discharged into the exhaust chamber 3, and finally discharged to other exhaust gas treatment devices or collection devices through a pipeline. In this way, the mixed gas in the asphalt tanker is centrally treated, avoiding environmental pollution and ensuring the health of the staff. In addition, obviously, in this embodiment, the tanker interface 5 can be used for feeding and exhausting, without designing two pipelines for feeding and exhausting respectively, which can increase the utilization rate of the pipelines.

[0037] In yet another embodiment provided by the present invention, a discharge pipe 4 is connected to the external connecting pipe 2. The discharge pipe 4 is used to discharge gas into an exhaust gas treatment device. The exhaust gas treatment device is preferably an environment that can purify the mixed gas. A purification device can be provided in the exhaust gas treatment device. The purification device for the mixed gas is a prior art and will not be elaborated herein.

[0038] In yet another embodiment provided by the present invention, the inner diameter of the external connecting pipe 2 is the same as the inner diameter of the tanker interface 5. This is to ensure that the exhaust chamber 3 can cover the tanker interface 5, so that the mixed gas only enters the exhaust chamber 3.

[0039] In another embodiment provided by the present invention, a stirring unit 31 is installed at the bottom of the inner connecting pipe 1, an auxiliary air outlet unit 32 is installed at the bottom of the exhaust chamber 3, a synchronous driving unit is connected between the stirring unit 31 and the auxiliary air outlet unit 32, and the synchronous driving unit is used to drive the stirring unit 31 and the auxiliary air outlet unit 32 to move synchronously. The stirring unit 31 stirs the asphalt just entering the tanker interface 5 to prevent part of the asphalt at the edge of the pipe orifice of the inner connecting pipe 1 from solidifying at the pipe orifice when encountering the continuously discharged cold air. The auxiliary air outlet unit 32 is located in the exhaust chamber 3, and the auxiliary air outlet unit 32 is mainly used to assist in accelerating the discharge speed of the mixed gas; a circular limiting groove is formed at the bottom of the inner connecting pipe 1, and the vertical cross-section of the circular limiting groove is T-shaped. The stirring unit 31 includes a connecting ring 311 rotatably installed in the circular limiting groove at the bottom of the inner connecting pipe 1. The central axis of the connecting ring 311 coincides with the central axis of the inner connecting pipe 1. The inner side of the connecting ring 311 is connected to an inner ring part 312 through a first connecting member. The inner ring part 312 is a ring-shaped component. A plurality of stirring rods 313 are fixed along the circumferential direction on the inner side wall of the inner ring part 312. The ends of the stirring rods 313 close to each other are connected with a stabilizing block. The stirring rods 313 are preferably cylindrical structures. The inner ring part 312 is located at the bottom of the inner connecting pipe 1, and the central axis of the inner ring part 312 coincides with the central axis of the inner connecting pipe 1. The outer side of the inner ring part 312 abuts against the inner wall of the inner connecting pipe 1; the auxiliary air outlet unit 32 includes a second connecting member connected to the outer side of the connecting ring 311. One end of the second connecting member close to the exhaust chamber 3 is fixedly provided with a first outer ring part 321. A plurality of fan blades 322 are arranged along the circumferential direction on the outer side wall of the first outer ring part 321. The outer side walls of the plurality of fan blades 322 are connected through a second outer ring part 323. The central axes of the first outer ring part 321 and the second outer ring part 323 are the same as the central axis of the outer connecting pipe 2. The inner wall of the first outer ring part 321 fits against the outer wall of the inner connecting pipe 1, and the outer wall of the second outer ring part 323 fits against the inner wall of the outer connecting pipe 2. The first connecting member and the second connecting member are both rod-shaped connecting structures. Preferably, the first connecting member and the second connecting member have the same shape. The first connecting member is formed by connecting a first vertical section and a first inclined section. The first vertical section is connected to the inner ring part 312, and the first inclined section is connected to the connecting ring 311. The second connecting member is formed by connecting a second vertical section and a second inclined section. The second vertical section is connected to the first outer ring part 321, and the second inclined section is connected to the connecting ring 311;The synchronous drive unit includes a connecting assembly 331 fixedly connected to the first outer ring portion 321. In this embodiment, the connecting assembly 331 is preferably a connecting rod. The top of the connecting assembly 331 is fixedly connected to an outer gear ring 332, which is sleeved on the inner pipe 1. A driving motor 333 is installed on the top surface of the outer side of the outer pipe 2. A connecting shaft 334 is rotatably penetrated on the outer pipe 2. The top of the connecting shaft 334 is connected to the output shaft of the driving motor 333. The bottom of the connecting shaft 334 extends into the exhaust chamber 3 and is fixedly provided with a driving gear 335. The driving gear 335 is meshed with the outer gear ring 332. The power device is designed in this way to avoid setting the power source (that is, the driving motor 333) inside the inner pipe 1 and to set the power source outside the exhaust chamber 3, which is convenient for the wiring of the power source. Moreover, the stirring unit 31 and the auxiliary air outlet unit 32 can be synchronously driven to work through the synchronous drive unit. ;

[0040] When liquid asphalt is output through the inner pipe 1, the drive motor 333 is started, and the drive motor 333 drives the drive gear 335 to rotate to drive the outer ring gear 332 to rotate. At the same time, the outer ring gear 332 drives the connecting assembly 331 and the first outer ring portion 321 to rotate, and drives the connecting ring 311 to rotate through the first outer ring portion 321. In this way, the connecting ring 311 drives the inner ring portion 312 and the stirring rod 313 to rotate synchronously to stir the asphalt at the pipe mouth before entering the tank. Since the continuous rotation of the connecting ring 311, the inner ring portion 312, and the stirring rod 313 has a shearing effect, the probability of cooling and solidifying the asphalt in the corresponding area is reduced, so that it can still continue to fall into the tank. At this time, the first outer ring portion 321 also drives the multiple fan blades 322 and the second outer ring portion 323 to move. The movement of the fan blades 322 accelerates the discharge of the mixed gas, and the discharge of the mixed gas is also conducive to the liquid asphalt falling into the tank.

[0041] In another embodiment provided by the present invention, the fan blades 322 are rotatably connected between the first outer ring portion 321 and the second outer ring portion 323 via a rotating shaft 324, and a first torsion spring (not shown in the figure) is connected between the rotating shaft 324 and the first outer ring portion 321. The first torsion spring allows the rotating shaft 324 to rotate within a range of 45 to 60 degrees. In this way, when the first outer ring portion 321 rotates, the fan blades 322 can be driven to move for auxiliary exhaust. At this time, the fan blades 322 can also rotate within a small range to minimize dust accumulation.

[0042] In another embodiment provided by the present invention, a rubber sealing ring is installed at the bottom of the external pipe 2, and an annular groove is opened at the top of the tank truck interface 5. The rubber sealing ring and the annular groove are correspondingly arranged. When the external pipe 2 is docked at the tank truck interface 5, the rubber sealing ring is clamped in the annular groove to form a seal to prevent leakage of the mixed gas.

[0043] Further, after the loading arm moves the inner connecting pipe 1 to dock the outer connecting pipe 2 at the tanker interface 5, it is usually necessary to use manual assistance or other power mechanisms to achieve locking connection. The efficiency of the locking connection is slow and generally requires precise docking before the outer connecting pipe 2 can be locked and restricted (this is because the parking position of the truck is uncertain and the traditional loading arm cannot move the inner connecting pipe 1 accurately). Therefore, this embodiment provides a further solution to solve the above technical problems; in this embodiment, the inner connecting pipe 1 and the outer connecting pipe 2 are slidably sleeved together instead of the above-mentioned fixed connection. An axially extending groove is formed on the inner connecting pipe 1, and a sealing slider 21 is slidably installed on the outer connecting pipe 2. The sealing slider 21 is slidably installed in the groove to define the sliding connection direction between the inner connecting pipe 1 and the outer connecting pipe 2. A limiting spring 22 is connected between the sealing slider 21 and the groove; in addition, in this embodiment, the connecting component 331 between the external gear ring 332 and the first outer ring portion 321 is preferably a spring rod that can axially expand and contract. A stop baffle 23 is fixed on the inner side wall of the outer connecting pipe 2. The upper end of the stop baffle 23 abuts against the lower end face of the external gear ring 332 to prevent the external gear ring 332 from moving downward and then cooperate with the expansion and contraction of the spring rod to maintain the external gear ring 332 at a constant position; a trapezoidal limiting block 24 is slidably penetrated through the side wall of the tanker interface 5. The trapezoidal limiting block 24 is connected to the outer side wall of the tanker interface 5 through a spring connecting component 25. The upper end of the trapezoidal limiting block 24 is provided with an inclined surface that inclines downward and inward into the tanker interface 5. Under the elastic action of the spring connecting component 25, in the initial state, the trapezoidal limiting block 24 extends into the tanker interface 5, and the horizontal section of the upper end face of the trapezoidal limiting block 24 does not extend into the tanker interface 5, only the inclined surface part extends into the tanker interface 5. The inclined surface part of the trapezoidal limiting block 24 is arranged in corresponding cooperation with the second outer ring portion 323. When the second outer ring portion 323 moves downward, it will contact the inclined surface part of the trapezoidal limiting block 24; a plurality of inclined docking parts 26 are uniformly installed along the circumferential direction at the lower end of the second outer ring portion 323. Preferably, the inclined docking parts 26 extend below the outer connecting pipe 2. The inclined docking parts 26 are rod-shaped structures with the lower end inclined inward, and the number of the inclined docking parts 26 is preferably four. The main function of the inclined docking parts 26 is to finely adjust the position of the outer connecting pipe 2 so that the outer connecting pipe 2 can be accurately docked with the tanker interface 5. If the outer connecting pipe 2 and the tanker interface 5 cannot be accurately docked, when the second outer ring portion 323 moves downward, the inclined docking parts 26 (which may be one, two or three) will contact the tanker interface 5 and squeeze the second outer ring portion 323 to move toward the middle, which can also make the inner connecting pipe 1 and the outer connecting pipe 2 move slightly as a whole, so that the outer connecting pipe 2 is accurately aligned with the tanker interface 5;During the downward movement of the inclined docking part 26, the inclined docking part 26 may contact and squeeze the trapezoidal limit block 24, or may not contact the trapezoidal limit block 24. This is related to the position of the inclined docking part 26 in the circumferential direction of the second outer ring part 323. Obviously, the position of the inclined docking part 26 in the circumferential direction of the second outer ring part 323 does not affect the second outer ring part 323 squeezing the trapezoidal limit block 24.;

[0044] During the process of the outer connecting pipe 2 and the tank truck interface 5, it includes a precise docking stroke and a downward pressing and locking stroke. During the precise docking stroke, the loading arm drives the inner connecting pipe 1 to move the outer connecting pipe 2 above the tank truck interface 5. At this time, then driving the inner connecting pipe 1 to move downward, the second outer ring part 323 and the inclined docking part 26 also move downward. If the outer connecting pipe 2 and the tank truck interface 5 are not precisely docked and are slightly offset, when the inclined docking part 26 moves downward and is squeezed by the tank truck interface 5, it can push the second outer ring part 323 towards the middle position. In this way, the precise docking of the outer connecting pipe 2 and the tank truck interface 5 is achieved; during the downward pressing and locking stroke, the loading arm drives the inner connecting pipe 1 to continue moving downward. At this time, the outer connecting pipe 2 is blocked and cannot continue to move downward, so that the inner connecting pipe 1 and the outer connecting pipe 2 produce relative sliding, which also makes the sealing slider 21 slide in the groove and squeeze the limit spring 22. The movement of the inner connecting pipe 1 also forces the spring rod to be stretched. The continuous movement of the inner connecting pipe 1 drives the connecting ring 311 and the second outer ring part 323 to move downward. By squeezing the trapezoidal limit block 24 through the inclined docking part 26 and the second outer ring part 323 to move outward. At the same time, the spring connecting component 25 is also compressed. When the second outer ring part 323 moves below the trapezoidal limit block 24, stop the movement of the inner connecting pipe 1. At this time, under the elastic action of the spring connecting component 25, the trapezoidal limit block 24 resets and pops out to block the upper end surface of the second outer ring part 323. In this way, under the elastic action of the limit spring 22, the positions of the second outer ring part 323 and the inner connecting pipe 1 are limited, so that the outer connecting pipe 2 and the tank truck interface 5 are quickly docked and locked together. During disassembly, the trapezoidal limit block 24 can be pulled out manually or by adding other driving methods to complete the disassembly; through the above technical solutions, the precise docking of the outer connecting pipe 2 and the tank truck interface 5 can be achieved, and after the docking is completed, the outer connecting pipe 2 and the tank truck interface 5 can be quickly pressed together to form a locking seal, avoiding the leakage of the mixed gas, and at the same time reducing the negative impact on the asphalt loading speed.

[0045] In another embodiment, when the liquid asphalt is output, it is difficult to achieve stable and continuous output, and there may be pulsed intermittent conveying or uneven output. This is mainly because liquid asphalt is a high-viscosity liquid with relatively poor fluidity. During the conveying process, due to the viscosity of the liquid asphalt, the flow resistance in the conveying pipeline may increase, causing the asphalt liquid to exhibit a pulsed or uneven state during conveying. Obviously, within a unit time, different asphalt output amounts will result in different asphalt volatilization amounts, especially at the pipe orifice position, which will generate different volumes of mixed gas. That is to say, the amount of gas to be discharged is related to the asphalt output amount. Obviously, a higher rotational speed will increase the amount of gas discharged by the auxiliary gas outlet unit 32. However, if a higher rotational speed does not match a larger asphalt input amount, it will affect the operation of the driving motor 333 (increasing the working burden of the driving motor 333). That is to say, when the amount of gas discharged is positively correlated with the asphalt output amount, it can not only ensure the amount of gas discharged but also avoid having an adverse impact on the driving motor 333.

[0046] To this end, the present embodiment provides a further solution. It is particularly important to explain that in the present embodiment, there are many parts that are different from the previous embodiments. In the present embodiment, the inner tube 1 and the outer tube 2 are fixedly connected. A fixing rod 11 is formed at the bottom of the connecting ring 311. A two-way telescopic member 12 is rotatably mounted on the fixing rod 11 through a second torsion spring (not shown in the figure). Under the elastic action of the second torsion spring, in the initial state, the two-way telescopic member 12 is in an inclined state, and the two-way telescopic member 12 is tilted upward at one end inside the inner tube 1. The middle part of the two-way telescopic member 12 is rotatably mounted on the fixing rod 11 and both ends can be elastically telescopic. The two-way telescopic member 12 includes a rotating part rotatably mounted on the fixing rod 11, and a sliding groove with two ends passing through the middle part of the rotating part is opened, and the two ends of the sliding groove slide respectively. A first limiting portion and a second limiting portion are installed, and a mounting spring is connected between the first limiting portion and the second limiting portion. A first connecting block 13 is formed at the bottom of the inner ring portion 312 (the stirring rod 313 still exists), and a second connecting block 14 is formed at the bottom of the first outer ring portion 321 (the fan blade 322 still exists). The first limiting portion is rotatably connected to the first connecting block 13, and the second limiting portion is rotatably connected to the second connecting block 14. In this way, when the inner ring portion 312 moves downward, it will drive the first connecting block 13 to move downward and drive the first limiting portion to move. At this time, the rotating portion rotates and drives the second limiting portion to rotate, thereby lifting the second connecting block 14 and the first outer ring portion 321, and the distance the inner ring portion 312 moves downward is positively correlated with the distance the first outer ring portion 321 moves upward.In addition, the drive motor 333 is no longer installed on the top of the outer pipe 2 but on the side wall of the outer pipe 2. An elastic telescopic rod 15 is rotatably inserted through the side wall of the outer pipe 2. The fixed end of the elastic telescopic rod 15 is connected to the output shaft of the drive motor 333. The movable end of the elastic compression rod is located inside the outer pipe 2. A friction boss 16 is fixed on the movable end of the elastic telescopic rod 15. The outer surface of the friction boss 16 is a friction surface with a relatively large friction coefficient. The friction boss 16 is of a frustum-shaped structure, and the diameter of the friction boss 16 is larger the closer it is to the inner pipe 1. In addition, the connecting component 331 is in a non-retractable state. A ring-shaped drive cover 17 is fixed on the top of the connecting component 331. The ring-shaped drive cover 17 is sleeved on the inner pipe 1. The ring-shaped drive cover 17 is composed of a ring-shaped plate member and a ring-shaped outer edge 18. The ring-shaped outer edge 18 is connected to the outer side of the lower end of the ring-shaped plate member. Preferably, the lower end of the ring-shaped outer edge 18 is an inclined surface and the angle of this inclined surface is the same as the inclination angle of the friction boss 16. The inclined surface on the ring-shaped outer edge 18 is also a friction surface with a relatively large friction coefficient. In the initial state, the ring-shaped outer edge 18 is attached to the inclined surface of the friction boss 16, and the elastic telescopic rod 15 is in a contracted state. When the friction boss 16 rotates, the friction boss 16 can drive the ring-shaped outer edge 18 to rotate synchronously through friction. Moreover, when the ring-shaped outer edge 18 moves upward, the elastic telescopic rod 15 will drive the friction boss 16 to move outward and make the friction boss 16 fit with the bottom of the ring-shaped outer edge 18 again. The difference is that at this time, the diameter of the contact position between the ring-shaped outer edge 18 and the friction boss 16 becomes larger, which will cause the rotation speed of the ring-shaped outer edge 18 to become faster.;

[0047] When the input amount of asphalt per unit time increases, the impact forces received by the stirring rod 313 and the inner ring part 312 increase. At this time, the stirring rod 313 and the inner ring part 312 move downward by a certain distance. The movement of the inner ring part 312 synchronously drives the first connecting block 13 to move downward. The movement of the first connecting block 13 drives the double telescopic part 12 to rotate and tilt, and the double telescopic part 12 drives the second connecting block 14 to move upward. In this way, the first outer ring part 321 moves upward. At the same time, the connecting component 331 drives the annular drive cover 17 to move upward, so that the annular outer edge 18 moves upward away from the friction boss 16. However, under the elastic action of the elastic compression rod, the friction boss 16 still moves outward and fits on the annular outer edge 18. Moreover, at this time, the diameter of the contact position between the annular outer edge 18 and the friction boss 16 becomes larger, which can correspondingly increase the rotation speed of the first outer ring part 321, thereby increasing the exhaust volume. In this way, per unit time, the output volume of liquid asphalt increases, and the corresponding volume of the discharged gas will also increase; similarly, it can be obtained that per unit time, the output volume of liquid asphalt decreases, and the corresponding volume of the discharged gas will also decrease; in this way, when the output volume of liquid asphalt increases, it can ensure the volume of the discharged gas, and when the output volume of liquid asphalt decreases, it can also avoid having an adverse impact on the driving motor 333 and prevent the driving motor 333 from being overloaded. Moreover, the above technical solution can achieve stepless adjustment and can accurately control the flow rate of the discharged gas. In addition, the above technical solution also omits structures such as the external gear ring 332 and the driving gear 335, and the structure is simple.

[0048] Obviously, in this embodiment, both the stirring unit 31 and the auxiliary gas outlet unit 32 can move up and down reciprocally, and the auxiliary gas outlet unit 32 can enter the tanker interface 5 from the external connecting pipe 2. Since the outer side wall of the second outer ring part 323 is attached to the inner side wall of the external connecting pipe 2 and the inner diameter of the external connecting pipe 2 is the same as the inner diameter of the tanker interface 5, therefore, the second outer ring part 323 can obviously clean the dust accumulation on both the external connecting pipe 2 and the tanker interface 5. In this way, it is avoided that the dust accumulation at the external connecting pipe 2 and the tanker interface 5 affects the exhaust efficiency. Moreover, the second outer ring part 323 itself also rotates and is not prone to dust accumulation.

[0049] In another embodiment provided by the present invention, a method for treating tail gas in tar processing is provided. The specific method is as follows: The loading arm drives the discharge pipe to move above the tanker interface 5 and the docking mechanism is docked with the tanker interface 5. Sealing is achieved by docking the external connecting pipe 2 with the tanker interface 5. Liquid asphalt is output through the internal connecting pipe 1. At this time, the mixed gas is discharged from the exhaust chamber 3. In this way, the mixed gas in the asphalt tanker is centrally treated, environmental pollution is avoided, and the physical health of the staff can also be ensured. In addition, the utilization rate of the pipeline can also be increased.

[0050] Only certain exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An exhaust gas treatment device for tar processing, including a discharge pipe, and a loading arm for driving the discharge pipe to dock with the tanker interface, characterized in that, A docking mechanism is installed at the nozzle of the discharge pipe. The docking mechanism includes an inner connecting pipe and an outer connecting pipe that are sleeved with each other. An exhaust chamber is formed between the outer side wall of the inner connecting pipe and the inner side wall of the outer connecting pipe. The inner connecting pipe is used to output liquid asphalt, the outer connecting pipe is used to dock and seal with the tanker interface, and the exhaust chamber is used to discharge the gas in the tank; A stirring unit is installed at the bottom of the inner connecting pipe, and an auxiliary air outlet unit is installed at the bottom of the exhaust chamber. A synchronous drive unit is connected between the stirring unit and the auxiliary air outlet unit; The stirring unit includes a connecting ring rotatably installed at the bottom of the inner connecting pipe. The inner side of the connecting ring is connected with an inner ring part through a first connecting piece. The inner ring part is located at the bottom of the inner connecting pipe. A plurality of stirring rods are fixed along the circumferential direction on the inner side wall of the inner ring part; The auxiliary air outlet unit includes a second connecting piece connected to the outside of the connecting ring. A first outer ring part is fixed at one end of the second connecting piece close to the exhaust chamber. A plurality of fan blades are arranged along the circumferential direction on the outer side wall of the first outer ring part. The outer side walls of the plurality of fan blades are connected through a second outer ring part; The synchronous drive unit includes a connecting component fixed on the first outer ring part. An external gear ring is fixed at the top of the connecting component. The external gear ring is sleeved on the inner connecting pipe. A drive motor is installed on the top surface outside the outer connecting pipe. A connecting shaft is rotatably penetrated through the outer connecting pipe. The top of the connecting shaft is connected to the output shaft of the drive motor. The bottom of the connecting shaft extends into the exhaust chamber and is fixed with a drive gear. The drive gear meshes with the external gear ring; The inner connecting pipe and the outer connecting pipe are slidably sleeved together. An axially extending groove is formed on the inner connecting pipe. A sealing slider is slidably installed on the outer connecting pipe. The sealing slider is slidably installed in the groove to define the sliding connection direction between the inner connecting pipe and the outer connecting pipe. A limiting spring is connected between the sealing slider and the groove; The connecting component is a spring rod. A stop baffle is fixed on the inner side wall of the outer connecting pipe. The upper end of the stop baffle fits on the lower end surface of the external gear ring. A trapezoidal limiting block is slidably penetrated through the side wall of the tanker interface. The trapezoidal limiting block is connected to the outer side wall of the tanker interface through a spring connecting component. An inclined surface is provided at the upper end of the trapezoidal limiting block. In the initial state, the trapezoidal limiting block extends into the tanker interface. The inclined surface part of the trapezoidal limiting block is correspondingly matched with the second outer ring part. When the second outer ring part moves downward, it will contact the inclined surface part of the trapezoidal limiting block. A plurality of inclined docking parts are uniformly installed along the circumferential direction at the lower end of the second outer ring part. The inclined docking parts extend below the outer connecting pipe.

2. The tail gas treatment device for tar processing according to claim 1, wherein A discharge pipe is communicated with the outer connecting pipe. The discharge pipe is used to discharge the gas to the external environment.

3. The tail gas treatment device for tar processing according to claim 2, characterized in that, The inner diameter of the outer connecting pipe is the same as the inner diameter of the tanker interface.

4. The tail gas treatment device for tar processing according to claim 1, characterized in that, The synchronous drive unit includes a connecting rod fixed on the first outer ring part. An external gear ring is fixed at the top of the connecting rod. A drive motor is installed on the top of the outer connecting pipe. A connecting shaft is rotatably penetrated through the outer connecting pipe. The top of the connecting shaft is connected to the output shaft of the drive motor. The bottom of the connecting shaft extends into the exhaust chamber and is fixed with a drive gear. The drive gear meshes with the external gear ring.

5. The tail gas treatment device for tar processing according to claim 1, characterized in that, The fan blade is rotationally connected between the first outer ring part and the second outer ring part through a rotating shaft, and a first torsion spring is connected between the rotating shaft and the first outer ring part.

6. The tail gas treatment device for tar processing according to claim 1, characterized in that, A rubber sealing ring is installed at the bottom of the outer connecting pipe, an annular groove is formed at the top of the tanker interface, and the rubber sealing ring and the annular groove are arranged in corresponding cooperation.

7. A method for treating tail gas in tar processing, characterized in that, Based on the tail gas treatment device for tar processing according to any one of claims 1-6, it includes the following steps: The loading arm drives the discharge pipe to move above the tanker interface and makes the docking mechanism dock with the tanker interface. Sealing is achieved through the docking of the outer connecting pipe and the tanker interface, and liquid asphalt is output through the inner connecting pipe.

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