Anti-overflow packaging equipment for carbon black production

Abstract

The invention relates to the technical field of carbon black packaging, in particular to anti-overflow packaging equipment for carbon black production. Comprising a packaging rack, a protective door and a bearing plate used for supporting a packaging bag, a feeding pipe is arranged on the packaging rack above the bearing plate, one end of the feeding pipe is communicated with a storage tank, and a material blocking abutting plate capable of abutting against a bag opening is fixedly arranged on the feeding pipe at the bag opening of the packaging bag. Carbon black is utilized to apply pressure to a power box, and a compression spring is matched for use, so that a pressure applying block reciprocates in the longitudinal direction, and the pressure applying block disturbs flowing of the carbon black in a feeding pipe, so that local flow velocity and pressure distribution of the carbon black in the feeding pipe are changed, adhesion of the carbon black in the feeding pipe is reduced, the blocking phenomenon is reduced, and meanwhile, the service life of the feeding pipe is prolonged. The pressing block moving downwards applies pressure to the carbon black which is about to rise to the bag opening at the bottom, so that pits are formed in the carbon black, and the carbon black in the packaging bag is prevented from being brought out by the feeding pipe to influence the uniformity of the carbon black.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon black packaging, and more specifically, to a spill - proof packaging device for carbon black production. Background Art

[0002] Carbon black is mainly formed by pyrolyzing methane gas after high - temperature heating. The finished carbon black product is in powder form. Currently, carbon black is usually packaged in packaging bags. Since the finished carbon black product is in powder form, a large amount of dust will be generated during the packaging process.

[0003] Currently, in order to reduce the carbon black dust overflowing between the discharge pipe and the packaging bag, the bag mouth of the packaging bag is usually sleeved outside the discharge pipe of the storage tank, and then the bag mouth of the packaging bag is tightly pressed against the outer wall of the discharge pipe by a pressing member arranged outside the discharge pipe. In Chinese Patent Publication No.: CN118701347A, a carbon black powder packaging machine is proposed, which belongs to the technical field of equipment for packaging and guiding materials, including: a discharge pipe, inside which a telescopic pipe is coaxially arranged, and a conical frustum is coaxially arranged outside the lower end of the telescopic pipe; a chute is opened along the generatrix direction on the outer wall of the conical frustum, and at least three chutes are arranged in a circumferential array along the conical frustum. An inner support plate is slidably arranged in each chute, and the outer surface of the inner support plate fits with the conical surface of the conical frustum. An upper end of the inner support plate is provided with a connecting rod, and an upper end of the connecting rod extends to the outside of the discharge pipe. A guide rod perpendicular to the axis is arranged outside the discharge pipe, and the guide rods correspond to the connecting rods one by one, and the guide rods pass through the corresponding connecting rods, and the connecting rods are slidably arranged on the corresponding guide rods. Pressing plates are arranged outside the inner support plates, and the top of the lower end thereof cooperates with the outer wall of the lower end of the inner support plate to tightly press the bag mouth of the packaging bag.

[0004] Because the bag mouth of the packaging bag needs to be larger than the diameter of the conduit to be sleeved on the conduit, this will cause the bag mouth not to fit completely with the discharge pipe. Even if the bag mouth of the packaging bag is tightly pressed by a pressing device, there will be wrinkles at the edge of the bag mouth. Moreover, during the carbon black packaging process, as the weight of the carbon black in the packaging bag gradually increases, the wrinkled bag mouth is stretched, forming a "V" - shaped channel between it and the conduit, that is, the bag mouth is opened. If the carbon black drawn into the packaging bag contacts the bottom of the conduit, the packaging bag will break away from the conduit. Due to the friction between the conduit and the carbon black in the packaging bag, the carbon black in the bag will be taken out from the "V" - shaped channel, resulting in insufficient carbon black in the packaging bag and affecting the uniformity of the product. Summary of the Invention

[0005] The present invention provides a spill - proof packaging device for carbon black production, which uses a downward - moving pressing block to press the carbon black that is about to rise to the bag mouth at the bottom, so as to form a concave pit on the carbon black, avoiding the carbon black in the packaging bag being taken out by the feeding pipe and affecting the uniformity of the carbon black, thus solving the problems raised in the above - mentioned background art, that is: To achieve the above object, the anti-overflow packaging equipment for carbon black production includes a packaging frame, a protective door, and a bearing plate for supporting the packaging bag. A feeding pipe is arranged on the packaging frame above the bearing plate, and one end of the feeding pipe is communicated with a storage tank; A blocking material pressing plate capable of pressing against the bag mouth is fixedly arranged on the feeding pipe at the bag mouth of the packaging bag. The outer diameter of the blocking material pressing plate is larger than the inner diameter of the bag mouth. A flexible air cushion is arranged on the feeding pipe located inside the bag mouth and attached to the blocking material pressing plate. The flexible air cushion is communicated with an indentation forming part movably arranged inside the feeding pipe. When packaging carbon black, the flowing carbon black inside the feeding pipe presses on the indentation forming part. The indentation forming part is used to form a pit away from the bottom of the feeding pipe on the carbon black inside the packaging bag and press the air into the flexible air cushion, so that the flexible air cushion fills the bag mouth to realize the restriction of the carbon black inside the packaging bag.

[0006] The indentation forming part includes a pressing block movably arranged with the feeding pipe and a power box located inside the feeding pipe and fixedly arranged with the pressing block. The power box is in a bevel shape on the side of the feeding port of the feeding pipe; On the other hand, baffles are fixedly arranged at both ends of the pressing block. The baffles are movably arranged in a partition cavity inside the feeding pipe. The partition cavity is located at the end of the pressing block. A compression spring is elastically connected between the baffle and the inner wall of the partition cavity.

[0007] In the above technical solution, the carbon black powder conveyed inside the feeding pipe presses on the bevel surface of the power box. Based on the decomposition of force, it can be known that the power box drives the pressing block to move synchronously downward. During this process, the elastic potential energy of the compression spring is overcome, the compression spring is compressed, and the elastic potential energy increases. When the vertical downward component force applied by the carbon black to the power box weakens, under the elastic action of the compression spring, the baffle is pushed upward in the reverse direction, and the power box moves upward to disturb the carbon black conveyed inside the feeding pipe, reducing the adhesion of the carbon black on the inner wall of the feeding pipe; When the flexible air cushion inflates and expands, the blocking material pressing plate is used to press against the outside of the expanded flexible air cushion, so that the flexible air cushion expands into the bag mouth. The flexible air cushion fills the gap between the bag mouth and the feeding pipe, thereby reducing the phenomenon of air leakage, making the suction effect of the negative pressure device on the carbon black stronger, and improving the suction effect on the carbon black.

[0008] Compared with the prior art, the beneficial effects of the present invention are: 1. Using the carbon black to press on the power box and cooperating with the use of the compression spring, the pressing block moves reciprocally in the longitudinal direction, and the pressing block has a disturbing effect on the flow of the carbon black inside the feeding pipe, so as to change the local flow rate and pressure distribution of the carbon black inside the feeding pipe, reduce the adhesion inside the feeding pipe, thereby reducing the blockage phenomenon. At the same time, the downward moving pressing block presses on the carbon black that is about to rise to the bag mouth at the bottom, forming a pit on the carbon black, preventing the carbon black inside the packaging bag from being carried out by the feeding pipe and affecting the uniformity of the carbon black.

[0009] 2. The reciprocating motion of the pressure block is used to force the flexible air cushion to increase its pressure and expand. The expanded flexible air cushion fills the gap between the bag opening and the feed pipe, hindering the carbon black and thus limiting the overflow of the carbon black in the bag.

[0010] 3. When the flexible air cushion is inflated, the material resistance plate is used to hold the outside of the expanded flexible air cushion, so that the flexible air cushion expands into the bag opening. The flexible air cushion fills the gap between the bag opening and the feed pipe, thereby reducing air leakage, making the negative pressure device more effective in attracting carbon black and improving the suction effect on carbon black. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is a left view of the feed pipe structure of the present invention; Figure 3 It is a three-dimensional diagram of the feed pipe, material blocking plate and flexible air cushion structure of the present invention; Figure 4 It is a right view of the internal structure of the feed pipe of the present invention with a partial cutaway; Figure 5 This is a rear view of the principle structure of the flexible air cushion filling the gap at the bag opening of the present invention; Figure 6 It is a right view of the principle structure of the pit formation of the present invention; Figure 7 It is a three-dimensional diagram of the cutaway structure of the feed pipe and the explosion structure of the pressure block of the present invention; Figure 8 For the present invention Figure 4 A is an enlarged structural diagram; Figure 9 This is a schematic diagram of the internal structure of a feed pipe partially cut away in the present invention; Figure 10 Schematic diagram of the structure of the air collecting cavity, the flexible air cushion and the air release channel connected to each other in the present invention Figure 11 For the present invention Figure 9 The enlarged structural diagram at B in FIG.

[0012] The meaning of each number in the figure is: 100. Packaging rack; 101. Protective door; 102. Loading plate; 110, feed pipe; 110a, through groove; 111, material blocking plate; 112, compartment; 113, air supply channel; 114, air delivery channel; 115, one-way valve; 116, air release channel; 117, air collecting chamber; 118, air inlet channel; 120. Flexible air cushion; 130. Indentation forming part; 131. Pressing block; 131a. Baffle; 132. Power box; 133. Telescopic air cushion; 134. Compression spring; 140. Pit; 150. Collar; 151. Stop block; 152. Tensile spring. Detailed implementation manner

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] When the carbon black drawn into the packaging bag contacts the bottom of the conduit, the packaging bag detaches from the conduit. Since the conduit contacts the carbon black in the packaging bag and generates friction, the carbon black in the bag is thus carried out from the "V"-shaped channel, resulting in insufficient carbon black in the packaging bag and affecting the uniformity of the product. The present invention provides a spill-proof packaging device for carbon black production. Refer to Figures 1 - 3 As shown, it includes a packaging machine frame 100, a protective door 101, and a bearing plate 102 for supporting the packaging bag. Among them, a feeding pipe 110 is provided on the packaging machine frame 100 above the bearing plate 102. One end of the feeding pipe 110 is communicated with a storage tank (not shown in the figure). When packaging the carbon black powder (hereinafter referred to as carbon black) in the storage tank, first put the bag mouth of the packaging bag (the dotted part in the packaging bag reference Figure 2 ) on the feeding pipe 110, and the bottom of the packaging bag is located on the bearing plate 102, so as to support the packaging bag later as the weight of the carbon black in the packaging bag increases. Then, the two protective doors 101 are closed to wrap the packaging bag, and a negative pressure device provided inside the protective door 101 is started, and the carbon black in the storage tank is pumped into the packaging bag through the feeding pipe 110 by using negative pressure, thereby realizing the packaging work of the carbon black; In order to improve the overall sealing performance of the equipment, rubber sheets are arranged around the outer ring of the protective door 101. In this way, when the two protective doors 101 fit together, the sealing performance and packaging efficiency during the packaging process can be improved.

[0015] Secondly, in view of the above existing problems, the following is combined with Figure 4 、 Figure 5 、 Figure 6As shown in the figure, a material blocking and pressing plate 111 capable of pressing against the bag opening is fixedly arranged on the feeding pipe 110 at the bag opening of the packaging bag. The outer diameter of the material blocking and pressing plate 111 is larger than the inner diameter of the bag opening. A flexible air cushion 120 is arranged on the feeding pipe 110 located inside the bag opening and attached to the material blocking and pressing plate 111. The flexible air cushion 120 is communicated with an indentation forming part 130 movably arranged inside the feeding pipe 110. When packaging carbon black, the carbon black flowing inside the feeding pipe 110 is used to apply pressure to the indentation forming part 130. The indentation forming part 130 is used to form a pit 140 away from the bottom of the feeding pipe 110 on the carbon black inside the packaging bag, and press the air into the flexible air cushion 120 to fill the bag opening with the flexible air cushion 120, so as to realize the restriction of the carbon black inside the packaging bag and prevent the carbon black from overflowing; First, the specific structure of the indentation forming part 130 is shown. The indentation forming part 130 includes a pressing block 131 movably arranged with the feeding pipe 110, and a power box 132 located inside the feeding pipe 110 and fixedly arranged with the pressing block 131. The power box 132 is in a slope shape on the side of the feeding port of the feeding pipe 110. When negative pressure is generated at one end of the discharge port of the feeding pipe 110, the carbon black in the storage tank is conveyed into the packaging bag through the feeding pipe 110. During this process, since the carbon black conveyed inside the feeding pipe 110 is not uniform, therefore, the carbon black flowing inside the feeding pipe 110 is used to impact the power box 132, so that the power box 132 pushes the pressing block 131 to move longitudinally downward; Secondly, combined with Figure 7 As shown in the figure, the pressing block 131 is located in a through groove 110a opened at the bottom of the feeding pipe 110. Under normal conditions, the bottom of the pressing block 131 coincides with the outer contour of the feeding pipe 110. When the pressing block 131 moves downward, the pressing block 131 is used to change the effective flow area of the carbon black inside the feeding pipe 110 and form an abutment against the carbon black piled up below, so as to limit the carbon black from overflowing from the bag opening. On the other hand, baffles 131a are fixedly arranged at both ends of the pressing block 131. The baffles 131a are movably arranged in a partition cavity 112 existing inside the feeding pipe 110. The partition cavity 112 is located at the end of the pressing block 131. A compression spring 134 is elastically connected between the baffle 131a and the inner wall of the partition cavity 112; During specific operation, the carbon black powder conveyed inside the feeding pipe 110 is used to press against the slope of the power box 132 (arrow h is the flow direction of the carbon black). Based on the decomposition of force, it can be known that the power box 132 drives the pressing block 131 to move synchronously downward (arrow g is the moving direction of the pressing block 131). During this process, the elastic potential energy of the compression spring 134 is overcome, and the compression spring 134 is compressed, and the elastic potential energy increases. When the vertical downward component force applied by the carbon black to the power box 132 weakens, the compression spring 134 elastically pushes the baffle 131a to move upward in the reverse direction, and the power box 132 moves upward to disturb the carbon black conveyed inside the feeding pipe 110, reducing the adhesion of the carbon black to the inner wall of the feeding pipe 110; Furthermore, considering that the amount of carbon black gradually increases in the packaging bag, a retractable air cushion 133 is provided in the compartment 112 far away from the discharge port of the feed pipe 110. The top of the retractable air cushion 133 is bonded to the baffle 131a, and the bottom is bonded to the inner wall of the compartment 112. At the same time, an air supply channel 113 is connected between the bottom of the retractable air cushion 133 and the flexible air cushion 120, and an air delivery channel 114 is connected between the retractable air cushion 133 and the external air. A one-way valve 115 is provided in both the air supply channel 113 and the air delivery channel 114. The one-way valve 115 in the air channel 113 is used to supply the air in the telescopic air cushion 133 to the flexible air cushion 120, so that the flexible air cushion 120 expands. The expanded flexible air cushion 120 fills the gap between the bag mouth of the packaging bag and the feeding pipe 110, which hinders the carbon black, thereby limiting the overflow of the carbon black in the packaging bag. Secondly, the one-way valve 115 located in the air delivery channel 114 is used to supply external air to the telescopic air cushion 133, so that the external air is sucked into the telescopic air cushion 133 during the reciprocating movement of the baffle 131a up and down. That is to say, the carbon black is used to pressurize the power box 132, and the compression spring 134 is used to make the pressure block 131 move back and forth in the longitudinal direction. The pressure block 131 disturbs the flow of carbon black in the feeding pipe 110, thereby changing the local flow velocity and pressure distribution of the carbon black in the feeding pipe 110, reducing the adhesion in the feeding pipe 110, and thus reducing the blockage phenomenon. At the same time, the downwardly moving pressure block 131 presses the carbon black at the bottom that is about to rise to the bag mouth, so that a pit 140 is formed on the carbon black, so as to prevent the carbon black in the packaging bag from being taken out by the feeding pipe 110, affecting the uniformity of the carbon black; Return to Figure 5 and Figure 6 As shown, when the flexible air cushion 120 is inflated, the material-blocking plate 111 is used to hold the outer side of the inflated flexible air cushion 120, so that the flexible air cushion 120 expands into the bag opening. The flexible air cushion 120 fills the gap between the bag opening and the feeding tube 110, thereby reducing air leakage, making the negative pressure device more effective in attracting carbon black and improving the suction effect on carbon black.

[0016] In addition, combined Figure 9 , Figure 10 , Figure 11As shown in the figure, a collar 150 for pushing the carbon black adhering to the inner wall of the feeding pipe 110 is movably arranged on the inner wall at the discharge port of the feeding pipe 110. The collar 150 is located in the air collecting cavity 117 in the feeding pipe 110. An air inlet channel 118 is communicated between the air collecting cavity 117 and the flexible air cushion 120, and an air leakage channel 116 is communicated between the air collecting cavity 117 and the external air. The inner diameter of the air leakage channel 116 is smaller than that of the air inlet channel 118. In this way, the air transported into the flexible air cushion 120 is transported into the air collecting cavity 117 through the air inlet channel 118, forcing the pressure in the air collecting cavity 117 and the flexible air cushion 120 to increase. While realizing the expansion of the flexible air cushion 120, the air is used to push the collar 150 to move towards the discharge port of the feeding pipe 110. The collar 150 cleans the carbon black accumulated at the discharge port of the feeding pipe 110, pushes the carbon black outwards and separates it from the inner wall of the feeding pipe 110, so as to reduce the carbon black adhesion and facilitate the later carbon black transportation.

[0017] Next, a stop block 151 is fixedly arranged at the end of the collar 150 located in the feeding pipe 110. The stop block 151 can limit the tension spring 152 from detaching from the feeding pipe 110, and a tension spring 152 located in the air collecting cavity 117 is elastically connected between the stop block 151 and the feeding pipe 110. In this way, the air transported into the air collecting cavity 117 overcomes the elastic potential energy of the tension spring 152 to push the collar 150 to move. When the collar 150 moves to be flush with the end of the discharge port of the feeding pipe 110, the flexible air cushion 120 expands until the telescopic air cushion 133 can no longer transport air into the flexible air cushion 120 (as shown in the reference Figure 8 figure), that is: the pressure exerted by the carbon black on the power box 132 can no longer push the pressure-applying block 131 to move downwards. At this time, the collar 150 maintains a stable state. Once the pressure in the air collecting cavity 117 weakens to a certain extent, the flexible air cushion 120 transports air into the air collecting cavity 117 again. At the same time, the downward-moving pressure-applying block 131 exerts pressure on the carbon black in the packaging bag, forming a concave pit 140 on the carbon black.

[0018] When the suction of carbon black stops, at this time, the height of the carbon black accumulated at the discharge port of the feeding pipe 110 is as shown by the dotted line part in Figure 9 the figure. The height of the carbon black is H1. Due to the characteristics of the carbon black itself, the carbon black near the discharge port comes into contact with the water vapor in the external air and is easily attached to the inner wall of the discharge port, which is likely to cause blockage; as the air in the air collecting cavity 117 slowly discharges from the air leakage channel 116, and the collar 150 is pulled back under the elastic action of the tension spring 152, the carbon black accumulated on the collar 150 is resisted by the inner wall of the feeding pipe 110, so that a part of the carbon black on the collar 150 falls into the packaging bag, reducing the carbon black adhesion. Moreover, the height of the carbon black on the collar 150 is reduced to H2 to avoid the phenomenon that the carbon black accumulated at the discharge port of the feeding pipe 110 is too high and the carbon black overflows due to vibration when the packaging bag is removed.

[0019] Since a small amount of carbon black will remain on the pressing block 131 after the suction stops, the pressing block 131 will sink by a certain amount. Under the elastic action of the compression spring 134, the pressing block 131 will not sink too much, preventing the pressing block 131 from contacting the carbon black and facilitating the smooth passage of the pressing block 131 through the bag mouth of the packaging bag.

[0020] Working principle: Cover the packaging bag with the protective door 101, and use the negative pressure pumping device to pump the carbon black. During the pumping process, the carbon black presses on the power box 132, and in cooperation with the elastic potential energy of the compression spring 134, the pressing block 131 reciprocates in the longitudinal direction. The pressing block 131 disturbs the flow of carbon black in the feed pipe 110, changing the local flow rate and pressure distribution of the carbon black in the feed pipe 110 to reduce the adhesion in the feed pipe 110, thereby reducing the blockage phenomenon. Moreover, the downward-moving pressing block 131 presses on the carbon black that is about to rise to the bag mouth at the bottom, forming a concave pit 140 on the carbon black to prevent the carbon black in the packaging bag from being carried out by the feed pipe 110, affecting the uniformity of the carbon black. At the same time, the flexible air cushion 120 inflates, and air is also conveyed into the air collecting cavity 117 to push the collar 150 towards the discharge port. The inflated flexible air cushion 120 fills the gap between the bag mouth of the packaging bag and the feed pipe 110, acting as an obstacle to the carbon black, thereby restricting the overflow of the carbon black in the packaging bag. The movement of the collar 150 towards the discharge port pushes the carbon black attached to the inner wall of the discharge port last time, causing the carbon black to separate from the inner wall of the discharge port and reducing the blockage phenomenon.

[0021] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-overflow packaging device for carbon black production, comprising a packaging machine frame (100), a protective door (101), and a bearing plate (102) for supporting packaging bags, characterized in that: Above the bearing plate (102), a feeding pipe (110) is provided on the packaging machine frame (100), and one end of the feeding pipe (110) is communicated with a storage tank; On the feeding pipe (110) at the bag mouth of the packaging bag, a material blocking and pressing plate (111) capable of pressing against the bag mouth is fixedly provided. The outer diameter of the material blocking and pressing plate (111) is larger than the inner diameter of the bag mouth. A flexible air cushion (120) is provided on the feeding pipe (110) located inside the bag mouth and in contact with the material blocking and pressing plate (111). The flexible air cushion (120) is communicated with an indentation forming part (130) movably arranged inside the feeding pipe (110). When packaging carbon black, the flowing carbon black inside the feeding pipe (110) presses on the indentation forming part (130). The indentation forming part (130) is used to form a pit (140) away from the bottom of the feeding pipe (110) on the carbon black inside the packaging bag and press the air into the flexible air cushion (120) to fill the bag mouth with the flexible air cushion (120), so as to realize the restriction of the carbon black inside the packaging bag.

2. The anti-overflow packaging equipment for carbon black production according to claim 1, wherein: The indentation forming part (130) includes a pressing block (131) movably arranged with the feeding pipe (110), and a power box (132) located inside the feeding pipe (110) and fixedly arranged with the pressing block (131). The side of the power box (132) located on the feeding port side of the feeding pipe (110) is bevel-shaped.

3. The packaging equipment for carbon black production with anti-overflow according to claim 2, characterized in that: The pressing block (131) is located in a through groove (110a) opened at the bottom of the feeding pipe (110). Under normal conditions, the bottom of the pressing block (131) coincides with the outer contour of the feeding pipe (110). When the pressing block (131) moves downward, the pressing block (131) is used to change the effective flow area of the carbon black inside the feeding pipe (110) and form an abutment against the accumulated carbon black below to prevent the carbon black from overflowing from the bag mouth.

4. The anti-overflow packaging equipment for carbon black production according to claim 2, wherein: Both ends of the pressing block (131) are fixedly provided with baffles (131a). The baffles (131a) are movably arranged in a partition cavity (112) inside the feeding pipe (110). The partition cavity (112) is located at the end of the pressing block (131). A compression spring (134) is elastically connected between the baffle (131a) and the inner wall of the partition cavity (112).

5. The anti-overflow packaging equipment for carbon black production according to claim 4, characterized in that: A telescopic air cushion (133) is arranged inside the partition cavity (112) far from the discharge port of the feeding pipe (110). The top of the telescopic air cushion (133) is adhered to the baffle (131a), and the bottom is adhered to the inner wall of the partition cavity (112).

6. The anti-overflow packaging equipment for carbon black production according to claim 5, wherein: A gas supply channel (113) is communicated between the bottom of the telescopic air cushion (133) and the flexible air cushion (120). An air transmission channel (114) is communicated between the telescopic air cushion (133) and the external air.

7. The spill-proof packaging equipment for carbon black production according to claim 6, characterized in that: One-way valves (115) are arranged in both the gas supply channel (113) and the air transmission channel (114). The one-way valve (115) located in the gas supply channel (113) is used to supply the air inside the telescopic air cushion (133) to the flexible air cushion (120) to expand the flexible air cushion (120). The one-way valve (115) located in the air transmission channel (114) is used to supply the external air to the telescopic air cushion (133).

8. The anti-overflow packaging equipment for carbon black production according to claim 6, characterized in that: When the flexible air cushion (120) is inflated, the material blocking back plate (111) is used to resist the outside of the inflated flexible air cushion (120), so that the flexible air cushion (120) expands into the bag mouth, and the flexible air cushion (120) fills the gap between the bag mouth and the feeding pipe (110).

9. The spill-proof packaging equipment for carbon black production according to claim 5, characterized in that: A collar (150) for pushing the carbon black attached to the inner wall of the feeding pipe (110) is movably arranged on the inner wall at the discharging port of the feeding pipe (110). The collar (150) is located in the air collecting cavity (117) in the feeding pipe (110). An air inlet channel (118) is communicated between the air collecting cavity (117) and the flexible air cushion (120), and an air leakage channel (116) is communicated between the air collecting cavity (117) and the external air. The inner diameter of the air leakage channel (116) is smaller than that of the air inlet channel (118).

10. The packaging equipment for anti-overflow carbon black production according to claim 9, characterized in that: A stop block (151) is fixedly arranged at the end of the collar (150) located in the feeding pipe (110). The stop block (151) can limit the tension spring (152) from detaching from the feeding pipe (110), and a tension spring (152) located in the air collecting cavity (117) is elastically connected between the stop block (151) and the feeding pipe (110).

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