Styrene butadiene rubber degassing tower

Abstract

The invention belongs to the technical field of rubber degassing towers, and particularly relates to a styrene butadiene rubber degassing tower which comprises a tower shell, a bottom plate fixedly connected to the bottom of the tower shell, a conical cylinder rotationally connected to the center of the bottom plate, a support fixedly connected to the bottom of the bottom plate, and a conical roller, a plurality of sliding grooves are evenly formed in the outer side of the conical roller, and a blade is slidably connected into each sliding groove. A set of springs connected with the corresponding blades are arranged in each sliding groove, the conical roller is rotationally arranged in the conical barrel, the rotating axis of the conical roller deviates from the rotating axis of the conical barrel, the end of each blade is tightly attached to the inner wall of the conical barrel, the outer side of the top of the conical barrel is rotationally connected with a collecting ring, and the collecting ring is fixedly connected with the tower shell. A collecting opening inclining downwards is formed in the collecting ring, and a top cover is fixedly connected to the top of the tower shell. Negative pressure is continuously generated to suck out gas in hot-melt rubber by utilizing the conical roller and the conical cylinder with the deviated axis, and the phenomenon of expansion and foaming is inhibited in cooperation with centrifugal force generated by high-speed rotation.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber degassing towers, in particular to a styrene-butadiene rubber degassing tower. Background Art

[0002] In the process of producing rubber, gas is easily mixed into the hot-melt rubber. If the gas is not removed from the rubber, it will affect the quality of the final rubber product. Therefore, degassing equipment is needed for degassing. The existing degassing equipment is commonly vacuum degasser and centrifugal degasser. The vacuum degasser generates negative pressure to suck out the gas in the rubber to achieve degassing, while the centrifugal degasser uses high-speed rotation to generate centrifugal force to squeeze out the gas in the rubber.

[0003] In the prior art, when the rubber is in a vacuum state, the gas mixed in the rubber will expand rapidly, causing the rubber to expand and bubble. Therefore, during the degassing process, the rubber is very likely to overflow from the container, causing waste or even making it impossible to continue working. At the same time, this process has low production efficiency and is difficult to meet customers' delivery requirements when there are many orders.

[0004] The Chinese patent with the authorization announcement number CN100509333C discloses a vacuum degassing device with the function of preventing the overflow of vulcanized silicone rubber raw materials, including a body, a top cover, a photoelectric sensor, a vacuum pump, and a pressure control transmitter. Positioning guide rails are installed on both sides of the inner wall of the upper end of the body, and photoelectric sensors are installed on both sides of the positioning guide rails. The vacuum pump is connected to the body through a stop valve. The electromagnetic vacuum baffle valve and the air release valve are connected to the body in parallel. The input end of the pressure control transmitter is connected to the body, and the output end is connected to the vacuum pump through a relay contactor; the electromagnetic vacuum baffle valve is connected in series to the receiving end of the photoelectric sensor through a relay control module, thereby forming a double closed-loop control method. The guide rail photoelectric sensor is used to detect the liquid level signal, and the relay module is used to control the opening and closing of the electromagnetic vacuum baffle valve, which can prevent the overflow of raw materials, realize the function of automatically completing the degassing of raw materials, and improve production efficiency.

[0005] However, the above patent still has the following disadvantages: 1. The above patent uses the opening and closing of the baffle valve to avoid the foaming of raw materials during the degassing process, which may cause the raw materials to overflow. However, the above patent cannot suppress the foaming phenomenon, which affects the quality of the final product and the degassing efficiency. 2. The above patent wastes time in dealing with the bubbles after the bubbles appear, which affects the degassing efficiency. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention solves the technical problem of providing a cone cylinder and a cone roller whose rotating axes are offset from each other, and cooperating with blades, so that during the rotation of the cone cylinder and the cone roller, the volume of the space between the two blades can be continuously changed, and then when the volume of the space between the two blades becomes larger, negative pressure is generated, so that the bubbles in the hot-melt rubber are burst, and degassing is achieved. The cone cylinder and the cone roller rotate at high speed to generate centrifugal force, so that in the process of degassing using negative pressure, the bubbles are quickly squeezed out of the hot-melt rubber by centrifugal force, and the bubbles are avoided from expanding instantly and causing bubbling of the hot-melt rubber. When bubbling is inevitable, the rotation speed of the cone cylinder is reduced to lower the liquid level of the hot-melt rubber, so that unqualified rubber is avoided from overflowing, and the rubber is stirred by the blades to break the bubbles, thereby solving the bubbling problem.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a styrene-butadiene rubber degassing tower, comprising: A tower shell, wherein a bottom plate is fixedly connected to the bottom of the tower shell, a cone is rotatably connected to the center of the bottom plate, and a bracket is fixedly connected to the bottom of the bottom plate; A conical roller, wherein a plurality of chute grooves are evenly distributed on the outer side of the conical roller, a blade is slidably connected in each chute, and a group of springs connected to the corresponding blade are arranged in each chute; Among them, the cone roller is rotatably arranged in the cone cylinder, the rotation axis of the cone roller deviates from the rotation axis of the cone cylinder, the end of each blade is tightly fitted with the inner wall of the cone cylinder, the outer side of the top of the cone cylinder is rotatably connected with a collecting ring, the collecting ring is fixedly connected to the tower shell, the collecting ring is provided with a collecting port inclined downward, and the top of the tower shell is fixedly connected with a top cover.

[0008] A through feed port is provided on the bottom plate between the cone cylinder and the cone roller, a throttle valve connected to the feed port is fixedly connected at a position corresponding to the feed port at the bottom of the bottom plate, and a feed pipe is fixedly connected to the bottom of the throttle valve.

[0009] A plurality of discharge ports are evenly distributed in the circumferential direction around the top of the cone, each of the discharge ports is located between every two adjacent blades, and each of the discharge ports can be communicated with the collecting port.

[0010] A driven wheel is fixedly connected to the outer side of the bottom of the cone, a first motor seat is fixedly connected to the outer side of the bottom of the tower shell, a first motor is fixedly connected to the first motor seat, a power output end of the first motor passes through the first motor seat and is transmission-connected to a driving wheel, and a transmission belt passing through the tower shell is transmission-connected between the driving wheel and the driven wheel.

[0011] A rotating shaft is fixedly connected to the axis of the tapered roller, the rotating shaft passes through the top cover and is rotatably connected to the top cover, one end of the rotating shaft extending out of the top cover is fixedly connected to a driven gear, a second motor seat is fixedly connected to the top cover, a second motor is fixedly connected to the top of the second motor seat, a power output end of the second motor passes through the second motor seat and is transmission-connected to a driving gear, and the driving gear and the driven gear are meshingly transmission-connected.

[0012] A heating wire is fixedly connected inside the tower shell, the heating wire surrounds the outside of the cone, a heater is fixedly connected to the outside of the tower shell, and two ends of the heating wire extend out of the tower shell and are electrically connected to the heater.

[0013] The end of the collecting port is fixedly connected with a separation cylinder, the lower end of the separation cylinder is fixedly connected with a collection bucket, the top of the separation cylinder is fixedly connected with an exhaust cylinder, and a filter element is arranged inside the exhaust cylinder.

[0014] A cone cylinder is provided at the rotational connection between the cone cylinder and the base plate, a sealing gasket is fixedly connected between the top cover and the tower shell, the sealing gasket fits tightly with the cone roller and each blade and slides relatively, a sealing strip is fixedly connected to the end of each blade, and each sealing strip fits tightly with the inner wall of the cone cylinder.

[0015] In summary, compared with the prior art, the beneficial effects of the present invention are: (1) By arranging a cone cylinder and a cone roller with mutually offset rotating axes and cooperating with blades, the volume of the space between the two blades can be continuously changed during the rotation of the cone cylinder and the cone roller. When the volume of the space between the two blades increases, negative pressure is generated, causing the bubbles in the hot melt rubber to burst and degassing to be achieved.

[0016] (2) The centrifugal force is generated by the high-speed rotation of the cone cylinder and the cone roller, so that in the process of degassing by negative pressure, the bubbles are quickly squeezed out of the hot melt rubber by the centrifugal force, avoiding the instantaneous expansion of the bubbles and the foaming of the hot melt rubber.

[0017] (3) When foaming is unavoidable, the rotation speed of the cone is reduced to lower the level of the hot melt rubber to prevent unqualified rubber from overflowing, and the rubber is stirred by blades to break the bubbles, thereby solving the foaming problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of this patent.

[0019] Figure 2 This is a side view of the patent.

[0020] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0021] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0022] Figure 5 This is a schematic diagram of the structure of this patent.

[0023] Figure 6 for Figure 5 A partial enlarged view of point C in the middle.

[0024] Figure 7 Schematic diagram of the structure inside the cone.

[0025] Figure 8 Schematic diagram of the structure inside the cone.

[0026] Explanation of the reference numerals: bracket 10; tower shell 11; top cover 12; collecting port 13; separation cylinder 14; collecting bucket 15; exhaust pipe 16; filter element 17; first motor 18; first motor seat 19; driving wheel 20; transmission belt 21; driven wheel 22; bottom plate 23; rotating sealing ring 24; cone cylinder 25; heating wire 26; heater 27; discharge port 28; collecting ring 29; cone roller 30; chute 31; blade 32; sealing strip 33; spring 34; sealing gasket 35; throttle valve 36; feed pipe 37; feed port 38; rotating shaft 39; driven gear 40; driving gear 41; second motor seat 42; second motor 43. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] like Figure 1-8 As shown, a styrene-butadiene rubber degassing tower comprises a bracket 10, a bottom plate 23 is fixedly connected to the top of the bracket 10, a tower shell 11 is fixedly connected to the bottom plate 23, a top cover 12 is fixedly connected to the top of the tower shell 11, a cone 25 is rotatably connected to the center of the bottom plate 23, a rotating sealing ring 24 is provided at the rotational connection between the bottom plate 23 and the cone 25, a cone roller 30 is rotatably provided in the cone 25, the rotation axis of the cone roller 30 is offset from the rotation axis of the cone 25, a plurality of chute grooves 31 are evenly distributed on the cone roller 30, a blade 32 is slidably connected to each chute 31, a group of springs 34 connected to the corresponding blade 32 are provided in each chute 31, and a sealing strip 33 tightly fitting the inner wall of the cone 25 is fixedly connected to the end of each blade 32.

[0029] By arranging the cone cylinder 25 and the cone roller 30 with the rotating axes offset from each other, and cooperating with the blades 32, the volume of the space between the two blades 32 can be continuously changed during the rotation of the cone cylinder 25 and the cone roller 30, and then negative pressure is generated when the volume of the space between the two blades 32 increases, so that the bubbles in the hot melt rubber burst and degassing is achieved.

[0030] In addition, the cone cylinder 25 and the cone roller 30 rotate at high speed to generate centrifugal force, so that in the process of degassing by negative pressure, the bubbles are quickly squeezed out of the hot melt rubber by centrifugal force, avoiding the bubble instantaneous expansion and bubbling of the hot melt rubber.

[0031] like Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, a collecting ring 29 is rotatably connected to the outer side of the top of the cone cylinder 25, and the collecting ring 29 is fixedly connected to the tower shell 11. A collecting port 13 inclined downward is opened on the collecting ring 29, and a plurality of discharge ports 28 are evenly distributed in the circumferential direction around the top of the cone cylinder 25, each discharge port 28 is located between every two adjacent blades 32, and each discharge port 28 can be connected to the collecting port 13, a sealing gasket 35 is fixedly connected between the top cover 12 and the tower shell 11, and the sealing gasket 35 is tightly fitted with the cone roller 30 and each blade 32, and a through feed port 38 is opened on the bottom plate 23 between the cone cylinder 25 and the cone roller 30, and a throttle valve 36 is fixedly connected to the bottom of the bottom plate 23, and a feed pipe 37 is fixedly connected to the bottom of the throttle valve 36.

[0032] By setting a throttle valve 36, the amount of hot melt rubber entering the device for degassing can be controlled, and by setting a discharge port 28 at the top of the cone 25, it can be ensured that during the high-speed rotation of the cone 25, the hot melt rubber after degassing moves up to the discharge port 28 under the action of centrifugal force and is discharged and collected from the collection port 13.

[0033] like Figure 1 , Figure 2 and Figure 6 As shown, the end of the collecting port 13 is fixedly connected to a separation cylinder 14 , the lower end of the separation cylinder 14 is fixedly connected to a collecting bucket 15 , the top of the separation cylinder 14 is fixedly connected to an exhaust cylinder 16 , and a filter element 17 is arranged in the exhaust cylinder 16 .

[0034] By providing the separation cylinder 14, the degassed rubber and the excess gas can be collected and processed separately.

[0035] like Figure 3 and Figure 5As shown, a heating wire 26 is fixedly connected inside the tower shell 11 , and the heating wire 26 surrounds the outside of the cone 25 . A heater 27 is fixedly connected to the outside of the tower shell 11 , and the heating wire 26 passes through both ends of the tower shell 11 and is electrically connected to the heater 27 .

[0036] By providing the heating wire 26 and the heater 27, it can be ensured that the hot melt rubber remains in a fluid state during the degassing process, thereby ensuring that the degassing work can proceed smoothly.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a driven wheel 22 is fixedly connected to the outer side of the bottom of the cone cylinder 25, a first motor seat 19 is fixedly connected to the outer bottom of the tower shell 11, a first motor 18 is fixedly connected to the first motor seat 19, a power output end of the first motor 18 passes through the first motor seat 19 and is transmission-connected to a driving wheel 20, a transmission belt 21 passing through the tower shell 11 is transmission-connected between the driving wheel 20 and the driven wheel 22, a rotating shaft 39 rotationally connected to the top cover 12 is fixedly connected at the axis of the cone roller 30, one end of the rotating shaft 39 extending out of the top cover 12 is fixedly connected to a driven gear 40, a second motor seat 42 is fixedly connected to the top cover 12, a second motor 43 is fixedly connected to the second motor seat 42, a power output end of the second motor 43 passes through the second motor seat 42 and is transmission-connected to a driving gear 41, and the driving gear 41 is meshed and transmission-connected with the driven gear 40.

[0038] In this embodiment, initially, the operator connects the device to the power supply and the control system, then connects the feed pipe 37 to the injection device, connects the collection bucket 15 to the rubber collection device, connects the top of the exhaust pipe 16 to the suction fan, and then turns on the heater 27 to make the heating wire 26 heat up to preheat the device.

[0039] When in use, hot-melt rubber is injected into the cone cylinder 25 through the feed pipe 37 and the feed port 38, and the amount of rubber entering the cone cylinder 25 can be controlled by adjusting the throttle valve 36, and the first motor base 19 is started synchronously, and the cone cylinder 25 is driven to rotate at a high speed through the transmission connection between the driving wheel 20 and the driven wheel 22. The hot-melt rubber in fluid state will gradually rise along the inner conical surface of the cone cylinder 25 due to its viscosity and fluidity, and under the action of the centrifugal force generated by the rotation of the cone cylinder 25, and form a ring shape that is completely attached to the inner wall of the cone cylinder 25.

[0040] At the same time, the second motor 43 drives the cone roller 30 to rotate through the transmission connection between the driving gear 41 and the driven gear 40. The cone roller 30 keeps the same rotation direction as the cone cylinder 25. The gap between the cone cylinder 25 and the cone roller 30 is isolated into individual spaces between every two blades 32. The rubber in each space is evenly distributed. Because the rotation axis between the cone roller 30 and the cone cylinder 25 is offset, the volume of the space formed between every two blades 32 changes periodically during the rotation of the cone cylinder 25 and the cone roller 30. The space between the blades 32 rotates with the rotation of the cone roller 30, and the space between the blades 32 increases in volume when it is away from the collecting port 13, thereby forming a negative pressure to suck out the gas in the hot melt rubber.

[0041] When negative pressure is generated, the gas in the hot molten rubber expands rapidly, causing bubbles in the hot molten rubber, which will affect the quality of the final product. Since the cone 25 continuously rotates to generate centrifugal force, the rubber is continuously squeezed and gathered on the inner wall of the cone 25 under the action of the centrifugal force, squeezing the bubbles out of the hot molten rubber, thereby solving the problem of bubbling.

[0042] When the space between the blades 32 is close to the collecting port 13, the volume is reduced, and when the discharge port 28 is connected with the collecting port 13, the sucked gas and the hot melt rubber at a high place are pushed into the collecting port 13, the hot melt rubber has been degassed and falls into the collecting bucket 15 for collection, and the gas removed from the rubber is extracted from the exhaust pipe 16, and the gas is processed by the filter element 17 to avoid rubber leakage.

[0043] During the degassing process, the heating wire 26 continuously generates heat to ensure that the rubber in the cone 25 always remains in a hot melt state, thereby ensuring that the rubber can be degassed stably.

[0044] Once there is too much gas in the hot melt rubber, bubbling is inevitable. At this time, the operator controls the first motor 18 to reduce the rotation speed of the cone 25, so that the centrifugal force generated by the cone 25 is reduced, and the hot melt rubber that was originally completely attached to the inner wall of the cone 25 falls rapidly under the action of gravity, thereby reducing the liquid level of the hot melt rubber in the cone 25, so that the rubber can no longer enter the collection port 13, avoiding the overflow of unqualified rubber.

[0045] At this time, the cone roller 30 continues to rotate, and a speed difference is generated between the cone roller 30 and the cone cylinder 25. The blades 32 will continue to stir and cooperate with the blades 32 to remove bubbles until the bubbles are completely broken. The first motor 18 is controlled again to restore the rotation speed of the cone cylinder 25, and ensure that each discharge port 28 is located between every two blades 32 again, and the degassing treatment of the rubber is restored to ensure the quality of the final rubber output.

[0046] The first motor 18, the second motor 43, the filter element 17, and the heater 27 are mature existing technologies and will not be described in detail herein.

[0047] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0048] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0049] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A styrene-butadiene rubber degassing tower, characterized in that: include: A tower shell (11), wherein a bottom plate (23) is fixedly connected to the bottom of the tower shell (11), a cone (25) is rotatably connected to the center of the bottom plate (23), and a bracket (10) is fixedly connected to the bottom of the bottom plate (23); A conical roller (30), wherein a plurality of slide grooves (31) are evenly distributed on the outer side of the conical roller (30), a blade (32) is slidably connected in each of the slide grooves (31), and a group of springs (34) connected to the corresponding blade (32) are arranged in each of the slide grooves (31); The cone roller (30) is rotatably arranged in the cone cylinder (25), the rotation axis of the cone roller (30) deviates from the rotation axis of the cone cylinder (25), the end of each blade (32) is tightly fitted with the inner wall of the cone cylinder (25), the top outer side of the cone cylinder (25) is rotatably connected with a collecting ring (29), the collecting ring (29) is fixedly connected to the tower shell (11), the collecting ring (29) is provided with a collecting port (13) inclined downward, and the top of the tower shell (11) is fixedly connected with a top cover (12).

2. A styrene-butadiene rubber degassing tower according to claim 1, characterized in that: A through feed port (38) is provided on the bottom plate (23) between the conical cylinder (25) and the conical roller (30); a throttle valve (36) in communication with the feed port (38) is fixedly connected to the bottom of the bottom plate (23) at a position corresponding to the feed port (38); a feed pipe (37) is fixedly connected to the bottom of the throttle valve (36).

3. A styrene-butadiene rubber degassing tower according to claim 2, characterized in that: A plurality of discharge ports (28) are evenly distributed in a circumferential direction around the top of the cone (25), each of the discharge ports (28) is located between every two adjacent blades (32), and each of the discharge ports (28) can be connected to the collection port (13).

4. A styrene-butadiene rubber degassing tower according to claim 1, characterized in that: A driven wheel (22) is fixedly connected to the outer side of the bottom of the cone (25); a first motor seat (19) is fixedly connected to the outer side of the bottom of the tower shell (11); a first motor (18) is fixedly connected to the first motor seat (19); a power output end of the first motor (18) passes through the first motor seat (19) and is drivingly connected to a driving wheel (20); a driving belt (21) passing through the tower shell (11) is drivingly connected between the driving wheel (20) and the driven wheel (22).

5. A styrene-butadiene rubber degassing tower according to claim 4, characterized in that: A rotating shaft (39) is fixedly connected to the axis of the tapered roller (30), the rotating shaft (39) passes through the top cover (12) and is rotatably connected to the top cover (12), one end of the rotating shaft (39) extending out of the top cover (12) is fixedly connected to a driven gear (40), a second motor seat (42) is fixedly connected to the top cover (12), a second motor (43) is fixedly connected to the top of the second motor seat (42), a power output end of the second motor (43) passes through the second motor seat (42) and is transmission-connected to a driving gear (41), and the driving gear (41) is meshingly transmission-connected to the driven gear (40).

6. A styrene-butadiene rubber degassing tower according to claim 1, characterized in that: A heating wire (26) is fixedly connected inside the tower shell (11), and the heating wire (26) surrounds the outside of the cone (25). A heater (27) is fixedly connected to the outside of the tower shell (11), and both ends of the heating wire (26) extend out of the tower shell (11) and are electrically connected to the heater (27).

7. A styrene-butadiene rubber degassing tower according to claim 1, characterized in that: The end of the collecting port (13) is fixedly connected to a separation cylinder (14), the lower end of the separation cylinder (14) is fixedly connected to a collection bucket (15), the top of the separation cylinder (14) is fixedly connected to an exhaust cylinder (16), and a filter element (17) is provided inside the exhaust cylinder (16).

8. A styrene-butadiene rubber degassing tower according to claim 1, characterized in that: A cone cylinder (25) is provided at the rotational connection between the cone cylinder (25) and the bottom plate (23); a sealing gasket (35) is fixedly connected between the top cover (12) and the tower shell (11); the sealing gasket (35) is tightly fitted with the cone roller (30) and each blade (32) for relative sliding; a sealing strip (33) is fixedly connected to the end of each blade (32); and each sealing strip (33) is tightly fitted with the inner wall of the cone cylinder (25).

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