PTA dust-free blanking device

Abstract

The utility model relates to a pure terephthalic acid (PTA) dust-free blanking device which comprises a blanking hopper, a stock bin, an exhaust fan, a dust remover and a gas supply part, an inlet, an outlet and an operation opening which are communicated with one another are formed in the blanking hopper, a PTA ton bag is located at the inlet, the inlet is located above the outlet, the operation opening is located between the inlet and the outlet, and the hand of an operator can stretch into the operation opening; the stock bin is located below the discharging hopper, the stock bin is provided with a first opening, a second opening and a discharging port, the first opening of the stock bin is communicated with an outlet of the discharging hopper, and the discharging port is located below the first opening and the second opening; the dust remover is arranged on the stock bin and is communicated with the second opening of the stock bin; the exhaust fan is communicated with the dust remover through a communicating pipeline, so that negative pressure is formed in the stock bin; the gas supply part is communicated with the dust remover and used for supplying gas to the dust remover. According to the blanking device provided by the utility model, dust flying outwards through the operation opening of the blanking hopper is reduced; and the health of operators is effectively prevented from being influenced by long-term inhalation of a large amount of dust.

Description

TECHNICAL FIELD

[0001] The utility model relates to a PTA dustless unloading device. BACKGROUND

[0002] The purified terephthalic acid (PTA) is the main raw material in polyester fiber production, which generates polyester melt after esterification and polycondensation reaction with ethylene glycol in high temperature environment, and is conveyed to the spinning workshop for drawing treatment through melt conveying equipment.

[0003] The PTA material is placed in the PTA ton bag, and a large amount of PTA dust is generated in the unloading process of releasing the material in the PTA ton bag to the unloading hopper, a large amount of dust is splashed to the whole factory building, the operator's health is affected due to long-term inhalation of a large amount of dust, and the raw material is wasted. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a PTA dustless unloading device, which effectively reduces a large amount of dust generated in the unloading process of PTA material.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] A PTA dustless unloading device, comprising an unloading hopper, a material bin, an air extractor, a dust collector and a gas supply member, wherein the unloading hopper is provided with a through inlet, an outlet and an operating port, the PTA ton bag is located at the inlet, the inlet is located above the outlet, the operating port is located between the inlet and the outlet, and the operating port is used for the hand of the operator to extend into;

[0007] The material bin is located below the unloading hopper, and the material bin is provided with a first opening, a second opening and a discharge port, the first opening of the material bin is communicated with the outlet of the unloading hopper, and the discharge port is located below the first opening and the second opening;

[0008] The dust collector is arranged on the material bin and communicated with the second opening of the material bin;

[0009] The air extractor is communicated with the dust collector through a communication pipeline, so that a negative pressure is formed in the material bin;

[0010] The gas supply member is communicated with the dust collector, and the gas supply member is used for supplying gas to the dust collector.

[0011] According to some embodiments of the utility model, the gas supply member comprises a gas source and a buffer container, the gas source is communicated with the buffer container through a first pipeline, and the buffer container is communicated with the dust collector through a second pipeline.

[0012] According to some embodiments of the utility model, the device further includes a spray pipe and a spray head, the spray pipe and the spray head are located in the dust remover, the spray pipe is communicated with the second pipeline, and the spray head is communicated with the spray pipe.

[0013] According to some embodiments of the utility model, the dust remover includes a shell and a cloth bag arranged in the shell, the cloth bag is used for adsorbing PTA dust, the spray head is located above the cloth bag, and an outlet of the spray head faces the cloth bag.

[0014] According to some embodiments of the utility model, a plurality of spray heads are arranged, a plurality of cloth bags are arranged, and the spray heads and the cloth bags are one-to-one corresponding.

[0015] According to some embodiments of the utility model, the cloth bag includes a cloth bag body and a fixing part, the fixing part is arranged in the cloth bag body, and the fixing part is in a hollow cylinder shape.

[0016] According to some embodiments of the utility model, an electromagnetic valve is arranged on the second pipeline, and the electromagnetic valve is used for controlling on-off of the second pipeline.

[0017] According to some embodiments of the utility model, the device further includes a filter screen, the filter screen is arranged in the lower hopper, and the filter screen is detachably connected with the lower hopper.

[0018] According to some embodiments of the utility model, the filter screen is connected with the lower hopper through a connecting plate, mounting holes corresponding to the lower hopper are formed in the connecting plate, and the connecting plate is connected with the lower hopper by mounting fasteners in the mounting holes.

[0019] According to some embodiments of the utility model, the second opening is arranged at a position higher than that of the first opening.

[0020] Compared with the prior art, the utility model has the following advantages due to the above technical scheme:

[0021] By arranging the air draught fan and the dust remover, when PTA material enters the silo from the lower hopper, the PTA material in the lower hopper is drawn into the dust remover, so that dust is prevented from being blown out through the operation opening of the lower hopper; by blowing gas into the dust remover to vibrate and blow away PTA dust on the surface of the cloth bag, the PTA dust falls into the silo, so that the problem of large dust in the PTA feeding process is effectively solved, and the health of the operator is effectively protected from the influence of long-term inhalation of a large amount of dust. BRIEF DESCRIPTION OF DRAWINGS

[0022] ATTACH Figure 1The utility model provides a PTA dustless discharging device's structure diagram;

[0023] Figure Figure 2 Figure Figure 1 The enlarged view of the middle hopper, gas supply member and dust remover;

[0024] Figure Figure 3 The utility model provides a PTA dustless discharging device's structure diagram of gas supply member and dust remover;

[0025] Figure Figure 4 The utility model provides a PTA dustless discharging device's structure diagram of dust remover;

[0026] Figure Figure 5 The utility model provides a PTA dustless discharging device's structure diagram of first visual angle of hopper;

[0027] Figure Figure 6 The utility model provides a PTA dustless discharging device's structure diagram of second visual angle of hopper (without filter screen);

[0028] Figure Figure 7 The utility model provides a PTA dustless discharging device's structure diagram of third visual angle of hopper;

[0029] Figure Figure 8 The utility model provides a PTA dustless discharging device's side view of hopper;

[0030] Figure Figure 9 The utility model provides a PTA dustless discharging device's structure diagram of first visual angle of filter screen;

[0031] Figure Figure 10 The utility model provides a PTA dustless discharging device's structure diagram of second visual angle of filter screen.

[0032] In the above drawing:

[0033] 1 - electric hoist;2 - ton bag;3 - hopper, 31 - first part, 311 - operation mouth, 32 - second part, 33 - third part, 34 - fourth part, 341 - installation mouth, 35 - fifth part;4 - dust remover, 41 - shell, 42 - cloth bag;5 - buffer container;6 - air suction machine;7 - vent line;8 - gas source;9 - stock bin;10 - first pipeline;11 - second pipeline;12 - communication pipeline;13 - electromagnetic valve;14 - connecting plate;15 - filter screen;16 - spray pipe;17 - spray head;18 - support leg;19 - discharge pipe;20 - guide member;21 - support piece. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] Referring to Figures 1 to 10 The PTA dust-free feeding device comprises a feeding hopper 3, a stock bin 9, an air extractor 6, a dust collector 4 and a gas supply member, wherein:

[0037] An inlet, an outlet and an operating opening 311 are provided through the feeding hopper 3. The inlet is located at the upper part of the feeding hopper 3, the PTA ton bag 2 is located at the inlet of the feeding hopper 3, the outlet is located at the lower part of the feeding hopper 3, and the operating opening 311 is located between the inlet and the outlet. The operating opening 311 is open and communicates with the atmosphere, and is used for the operator to put his hand in to untie the binding belt of the PTA ton bag 2, so that the material in the PTA ton bag 2 enters the feeding hopper 3.

[0038] The feeding hopper 3 is provided with a filter screen 15. The PTA material enters the feeding hopper 3 and is filtered by the filter screen 15, so that excess rope heads, plastic sheets and other sundries are filtered out, and qualified PTA material enters the stock bin 9.

[0039] Referring to Figure 8 The feeding hopper 3 comprises a first part 31, a second part 32, a third part 33, a fourth part 34 and a fifth part 35 which are sequentially connected from top to bottom. The first part 31 has a narrow upper part and a wide lower part. The second part 32 has a uniform width. The third part 33 has a wide upper part and a narrow lower part. The fourth part 34 has a uniform width. The fifth part 35 has a wide upper part and a narrow lower part. The fifth part 35 is provided with a discharge pipe 19 at one end away from the fourth part 34. The first part 31 is provided with an inlet at the upper side away from the second part 32, and the side of the first part 31 is provided with an operating opening 311.

[0040] Preferably, the device further comprises a filter screen 15, the filter screen 15 is arranged in the lower hopper 3, and the filter screen 15 is detachably connected with the lower hopper 3. The filter screen 15 with different filter hole sizes is selected according to different PTA materials, which has high flexibility; at the same time, different filter screens 15 can be easily detached and replaced.

[0041] The filter screen 15 is detachably connected with the lower hopper 3 in the following manner: a mounting port 341 is formed in the side of the lower hopper 3, the mounting port 341 is located below the operation port 311, and the filter screen 15 is arranged in the mounting port 341; the filter screen 15 is connected with the lower hopper 3 through a connecting plate 14, the connecting plate 14 is provided with a mounting hole corresponding to the lower hopper 3, and the connecting plate 14 is connected with the lower hopper 3 by mounting a fastener in the mounting hole, wherein the filter screen 15 is horizontally arranged (the arrangement direction of the filter screen 15 is perpendicular to the downward direction), the connecting plate 14 is perpendicular to the filter screen 15, and the fastener is preferably a bolt-nut assembly.

[0042] The device further comprises support legs 18 for supporting the lower hopper 3, and the support legs 18 are preferably provided with four, and the four support legs 18 are respectively connected with the four corners of the bottom of the third part 33 of the lower hopper 3.

[0043] The stock bin 9 is located below the lower hopper 3, and the stock bin 9 has a first opening, a second opening, and a discharge port, the second opening is arranged higher than the first opening, and the discharge port is located below the first opening and the second opening. The first opening of the stock bin 9 is in communication with the outlet of the lower hopper 3, and the PTA material enters the stock bin 9 from the lower hopper 3 and is discharged from the discharge port of the stock bin 9.

[0044] The dust collector 4 is arranged on the stock bin 9 and is in communication with the second opening of the stock bin 9, the suction fan 6 is in communication with the dust collector 4 through the communication pipeline 12, and the suction fan 6 is arranged higher than the dust collector 4; a gas supply member is in communication with the dust collector 4, and the gas supply member is used for supplying gas to the dust collector 4, and the gas is preferably 0.8Mpa compressed air such as nitrogen.

[0045] The device further comprises a venting pipeline 7, the venting pipeline 7 is in communication with the suction fan 6 and the communication pipeline 12, the outlet of the venting pipeline 7 is in communication with the atmosphere, and the outlet of the venting pipeline 7 is located above the communication pipeline 12.

[0046] The specific implementation of the PTA dust-free feeding device in this example is that the suction fan 6 is used for suctioning the stock bin 9, so that a negative pressure state is formed in the stock bin 9, and the negative pressure can effectively extract the PTA dust in the lower hopper 3 into the dust collector 4, thereby reducing the dust flying out through the operation port 311 of the lower hopper 3, and the dust collector 4 is arranged to avoid the PTA material dust being discharged to the outdoor through the suction fan 6.

[0047] The dust collector 4 is a bag filter, which comprises a shell 41 and a bag 42 arranged in the shell 41 and used for adsorbing PTA dust. When the air extractor 6 is running, a large amount of PTA dust is adsorbed on the outer surface of the bag 42. Then, the air extractor 6 is turned off, and the PTA dust on the surface of the bag 42 in the dust collector 4 is shaken and blown clean by introducing nitrogen into the dust collector 4, and the PTA dust falls into the bin 9.

[0048] Preferably, referring to Figures 1-3 , the gas supply device comprises a gas source 8, a buffer container 5, the gas source 8 is communicated with the buffer container 5 through a first pipeline 10, the buffer container 5 is communicated with the dust collector 4 through a second pipeline 11, and an electromagnetic valve 13 is arranged on the second pipeline 11 and used for controlling the opening and closing of the second pipeline 11. The nitrogen can be stored in the buffer container 5 in advance, and when the nitrogen is needed, the electromagnetic valve 13 is opened, a large amount of nitrogen in the buffer container 5 enters the dust collector 4, and the PTA dust on the surface of the bag 42 in the dust collector 4 can be shaken and blown clean completely due to the sudden release of a large amount of nitrogen from the buffer container 5 to the dust collector 4.

[0049] In this example, the nitrogen is used for pulse, the electromagnetic valve 13 is opened every certain time (for example, 10 minutes), the nitrogen in the buffer container 5 enters the dust collector 4, a large amount of nitrogen is suddenly released, the PTA dust on the surface of the filter element is shaken and blown clean, and the PTA dust enters the bin 9 again.

[0050] In some embodiments, the buffer container 5 has an air inlet and an air outlet, the air inlet is located at the lower side of the buffer container 5, the air outlet is located at the upper side of the buffer container 5, that is, the air inlet is arranged at a position lower than that of the air outlet, the first pipeline 10 is communicated with the air inlet, and the second pipeline 11 is communicated with the air outlet.

[0051] In some embodiments, the device further comprises a spray pipe 16 and a spray head 17, the spray pipe 16 and the spray head 17 are both located in the dust collector 4, the spray pipe 16 is communicated with the second pipeline 11, the spray head 17 is communicated with the spray pipe 16, the spray head 17 is located above the bag 42, and the outlet of the spray head 17 faces downward to the bag 42 so as to blow the PTA dust on the surface of the bag 42.

[0052] In some embodiments, a plurality of spray heads 17 are arranged, a plurality of bags 42 are arranged, and the spray head 17 corresponds to the bag 42 one by one, so that the PTA dust on the surface of each bag 42 can be blown off, and the efficiency is high. The plurality of bags 42 are arranged in parallel and at the same height in the shell 41, and the plurality of spray heads 17 are arranged at the same height.

[0053] In some embodiments, the bag 42 comprises a bag body and a fixing part, the fixing part is arranged in the bag body, the fixing part is in a hollow cylinder shape, and the fixing part is used for fixing and supporting the bag body.

[0054] In the example, the device further comprises an electric hoist 1 for hanging the PTA ton bag 2 to move the PTA ton bag 2 above the inlet of the lower hopper 3, saving manpower and improving efficiency.

[0055] In the example, referring to Figure 1 , the inside of the silo 9 is provided with a material guiding member 20 and a supporting member 21. The material guiding member 20 is located at the bottom of the silo 9, i.e. the bottom of the material guiding member 20 is close to the discharge port of the silo 9. The outer surface of the material guiding member 20 forms a material guiding surface. There is a gap between the bottom of the material guiding member 20 and the inner side wall of the silo 9 for the material to pass through. There is a space between the bottom of the material guiding member 20 and the bottom of the silo 9 for the material to pass through. The material passes through the gap along the material guiding surface to the discharge port. The supporting member 21 is used to connect the material guiding member 20 and the silo 9 to support the material guiding member 20. When the PTA material falls from the top of the silo 9 to the material guiding surface, it can fall along the material guiding surface to the discharge port of the silo 9, which is easy to disperse the PTA material during the continuous falling process.

[0056] The material guiding member 20 is conical, extends along the height direction of the silo 9, has a hollow space inside, has no bottom surface, and the diameter of the material guiding member 20 gradually increases from the top of the silo 9 to the bottom thereof, and the sharp corner of the material guiding member 20 faces upward. Alternatively, the material guiding member 20 is a triangular pyramid, the sharp corner of the triangular pyramid faces upward, has no bottom surface, and has a hollow space inside.

[0057] The advantages of the PTA dust-free discharging device in the example are as follows: by setting the air extractor and the dust collector, when the PTA material enters the silo from the lower hopper, the PTA material in the lower hopper is extracted into the dust collector, reducing the dust emission through the operation port of the lower hopper; by blowing gas into the dust collector to vibrate and blow clean the PTA dust on the surface of the bag in the dust collector, the PTA dust falls into the silo, effectively solving the problem of large dust during the PTA discharging process, and effectively avoiding the impact on the health of the operator due to long-term inhalation of a large amount of dust.

[0058] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable persons skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A PTA dust-free feeding device, characterized in that, It includes a hopper, a bin, a blower, a dust collector, and a gas supply unit. The hopper has a through inlet, an outlet, and an operating port. The PTA ton bag is located at the inlet, which is above the outlet. The operating port is located between the inlet and the outlet and is used for the operator's hand to reach in. The hopper is located below the discharge hopper. The hopper has a first opening, a second opening, and a discharge port. The first opening of the hopper is connected to the outlet of the discharge hopper, and the discharge port is located below the first opening and the second opening. The dust collector is installed on the silo and communicates with the second opening of the silo; The exhaust fan and the dust collector are connected by a connecting pipe, which creates a negative pressure inside the silo. The gas supply component is connected to the dust collector, and the gas supply component is used to supply gas to the dust collector.

2. The PTA dust-free feeding device according to claim 1, characterized in that, The gas supply component includes a gas source and a buffer container. The gas source and the buffer container are connected through a first pipeline, and the buffer container is connected to the dust collector through a second pipeline.

3. The PTA dust-free feeding device according to claim 2, characterized in that, The device also includes a nozzle and a spray head, both of which are located inside the dust collector. The nozzle is connected to the second pipeline, and the spray head is connected to the nozzle.

4. The PTA dust-free feeding device according to claim 3, characterized in that, The dust collector includes a housing and a filter bag disposed inside the housing. The filter bag is used to adsorb PTA dust. The nozzle is located above the filter bag, and the outlet of the nozzle faces the filter bag.

5. The PTA dust-free feeding device according to claim 4, characterized in that, The spray nozzles are provided in multiple ways, and the cloth bags are provided in multiple ways, with each spray nozzle corresponding to one cloth bag.

6. The PTA dust-free feeding device according to claim 4, characterized in that, The cloth bag includes a bag body and a fixing part, wherein the fixing part is disposed in the bag body and is in the shape of a hollow cylinder.

7. The PTA dust-free feeding device according to claim 2, characterized in that, A solenoid valve is installed on the second pipeline, and the solenoid valve is used to control the opening and closing of the second pipeline.

8. The PTA dust-free feeding device according to claim 1, characterized in that, The device also includes a filter screen disposed inside the hopper and detachably connected to the hopper.

9. The PTA dust-free feeding device according to claim 8, characterized in that, The filter screen is connected to the hopper via a connecting plate. The connecting plate has mounting holes corresponding to the hopper. Fasteners are installed in the mounting holes to connect the connecting plate to the hopper.

10. The PTA dust-free feeding device according to claim 1, characterized in that, The second opening is positioned higher than the first opening.

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