Device for improving material blocking in PTA (pure terephthalic acid) pipe chain conveying

Abstract

The utility model discloses a device for improving material blocking in PTA (pure terephthalic acid) pipe chain conveying, which comprises a feeding hopper, a chain pipe used for conveying PTA in the feeding hopper in the horizontal direction, a chain sheet arranged in the chain pipe and a controller used for driving the chain sheet to rotate, and the chain pipe comprises a horizontal conveying pipe and an inclined transition pipe. An air inlet hole is formed in the low-end feeding area of the inclined transition pipe, an air blowing mechanism is arranged on the air inlet hole, and PTA accumulated at the feeding end of the inclined transition pipe is blown away through the air blowing mechanism. The problem that when PTA chain plate conveying is carried out, the slope is blocked due to material accumulation can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of polyester production, specifically to a device for improving the material jamming of PTA tubular chain conveyors. Background Technology

[0002] Hengda's PTA conveying system uses a tubular chain conveyor, capable of horizontal, inclined, and vertical combinations. Within a closed pipe, chain links drive the material along the pipe. During horizontal conveying, the material particles are pushed by the chain links in the direction of movement. When the internal friction between material layers is greater than the external friction between the material and the pipe wall, the material moves forward with the chain links, forming a stable flow. During vertical conveying, the material particles are pushed upwards by the chain links. Because the lower feeding prevents the upper material from sliding down, lateral pressure is generated, increasing the internal friction. When the internal friction between materials is greater than the external friction between the material and the pipe wall, plus the material's own weight, the material is conveyed upwards with the chain links, forming a continuous flow. Due to design flaws, the horizontal conveying section cannot be perfectly horizontal, exhibiting slopes and splices, such as... Figure 1 As shown, due to the angle, PTA cannot be completely pulled away by the chain, so PTA will accumulate at the slope, resulting in greater resistance during horizontal conveying, which can easily cause the chain plate to jam and thus stop the entire tubular chain conveyor. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a device for improving the material jamming of PTA tube chain conveyor, which can improve the problem of jamming caused by material accumulation at the slope during PTA chain conveyor conveying.

[0004] To solve the aforementioned technical problems, this application adopts the following technical solution:

[0005] An apparatus for improving PTA conveying by a tube chain includes a feeding hopper, a tube chain for horizontally conveying PTA in the feeding hopper, chain segments disposed within the tube chain, and a controller for rotating the chain segments. The tube chain includes a horizontal conveying tube and an inclined transition tube. An air inlet is provided in the lower feeding area of ​​the inclined transition tube, and an air blowing mechanism is provided on the air inlet. PTA accumulated at the feeding end of the inclined transition tube is dispersed by the air blowing mechanism.

[0006] Preferably, the air blowing mechanism includes a transfer pipe with one end connected to the air inlet, a manual valve located at the outer end of the transfer pipe, and a nitrogen pipe connected to the manual valve.

[0007] Preferably, the air inlet is a threaded hole.

[0008] Preferably, one end of the adapter pipe is connected to the air inlet by a threaded connection or welding.

[0009] Preferably, the outer end of the transfer pipe is provided with a flange, and the manual valve is connected through the flange.

[0010] Preferably, one end of the adapter pipe is welded with a clamp, and the side wall of the clamp is provided with a round hole communicating with the adapter pipe.

[0011] Preferably, the nitrogen pipe is a 12mm explosion-proof PU pipe, and a pressure reducing valve is connected to the nitrogen pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The existing chain conveyor system is modified to address areas where PTA tends to accumulate. An air inlet is created near the lower end of the junction between the horizontal conveyor pipe and the inclined transition pipe. An external air blowing mechanism is then connected to the air inlet to disperse the accumulated PTA, thus preventing PTA buildup in this area. This reduces resistance during PTA conveying, decreases the likelihood of chain jamming, and effectively improves the problem of material accumulation causing jamming at slopes during PTA chain conveying. This results in more stable chain conveying and a longer service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the combined structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] In the diagram: 1. Feed hopper; 2. Chain pipe; 21. Horizontal conveying pipe; 22. Inclined transition pipe; 3. Air blowing mechanism; 31. Transfer pipe; 32. Flange; 33. Nitrogen pipe; 34. Manual valve; 4. Controller; 5. Chain link; 6. Air inlet; 7. Round hole; 8. Pressure reducing valve; 9. Clamp. Detailed Implementation

[0017] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] like Figure 1 As shown, an apparatus for improving PTA conveying by a tube chain includes a feeding hopper 1, a chain tube 2 for horizontally conveying PTA in the feeding hopper 1, chain segments 5 disposed in the chain tube 2, and a controller 4 for rotating the chain segments 5. The chain tube 2 includes a horizontal conveying tube 21 and an inclined transition tube 22. The lower feeding area of ​​the inclined transition tube 22 is provided with an air inlet 6, and an air blowing mechanism 3 is provided on the air inlet 6. The PTA accumulated at the feeding end of the inclined transition tube 22 is blown away by the air blowing mechanism 3.

[0021] In actual production, when PTA is horizontally conveyed via a tubular chain, there is inevitably a region where horizontal conveying requires transition through an inclined transition pipe before continuing conveying. When PTA is conveyed from the horizontal conveying pipe 21 to the lower end of the inclined transition pipe 22 and then upwards, it is prone to accumulating at the inlet of the inclined transition pipe 22. Therefore, the area where PTA easily accumulates in the existing tubular chain 2 is modified. An air inlet 6 is opened near the lower end of the junction between the horizontal conveying pipe 21 and the inclined transition pipe 22, and an air blowing mechanism 3 is connected to the air inlet 6 to disperse the accumulated PTA. This prevents PTA from accumulating in this area, reduces the resistance during PTA conveying, and reduces the probability of the conveyor chain 5 of the tubular chain 2 jamming. This effectively improves the problem of jamming due to material accumulation at the slope during PTA chain conveying, making the tubular chain conveying more stable and extending its service life.

[0022] Further improvements include, for example Figure 2 As shown, the air blowing mechanism 3 includes a connecting pipe 31 with one end connected to the air inlet 6, a manual valve 34 located at the outer end of the connecting pipe 31, and a nitrogen pipe 33 connected to the manual valve 34; the nitrogen pipe 33 is a 12mm explosion-proof PU pipe, and a pressure reducing valve 8 is connected to the nitrogen pipe 33.

[0023] The diameter of the air inlet 6 is generally around 15mm. The manual valve 34 is a ball valve with a DN15 flange and a 32mm flange. The nitrogen pipe 33 is a DN25 to DN15 reducer connected using a quick-connect coupling, simplifying the structure. After assembly, the air intake can be controlled via the manual valve 34. Furthermore, the injection of nitrogen ensures that an explosion will not occur inside the chain pipe 2, effectively preventing explosions and avoiding the problem of PTA dust mixing with air and exploding upon contact with a ignition source. The nitrogen injection pressure can be adjusted via the pressure reducing valve 8 to prevent excessive intake pressure from hindering PTA flow through the chain pipe 2.

[0024] A further improvement is made in that the air inlet 6 is a threaded hole.

[0025] The air inlet 6 is a threaded hole, which can be used to connect to the adapter pipe 31, providing better flexibility. At the same time, when the external air blowing mechanism 3 is not needed, it can be sealed by plugging.

[0026] A further improvement is that one end of the adapter pipe 31 is connected to the air inlet 6 by a threaded connection or welding.

[0027] One end of the adapter pipe 31 is usually fixed to the air inlet 6 by threaded connection or welding. The fixing method is simpler. Welding provides better sealing, but it is not easy to disassemble. Threaded connection, on the other hand, can be disassembled. You can choose according to your needs.

[0028] A further improvement is made in that the outer end of the transfer pipe 31 is provided with a flange 32, and the manual valve 34 is connected through the flange 32.

[0029] The connection via flange 32 makes it easier to assemble and disassemble the manual valve 34, and the overall structure is simple.

[0030] A further improvement is that a clamp 9 is welded to one end of the adapter pipe 31, and a round hole 7 communicating with the adapter pipe 31 is provided on the side wall of the clamp 9.

[0031] By welding a clamp 9 with a round hole 7 to one end of the adapter pipe 31, a detachable connection can be made with the chain pipe 2 through the clamp 9, while also ensuring stable nitrogen entry. With this structure, the diameter of the air inlet 6 can be made smaller, reducing the degree of damage to the chain pipe 2.

[0032] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. An apparatus for improving PTA tube chain conveying to prevent jamming, comprising a feeding hopper (1), a chain tube (2) for horizontally conveying PTA in the feeding hopper (1), chain segments (5) disposed in the chain tube (2), and a controller (4) for rotating the chain segments (5), wherein the chain tube (2) comprises a horizontal conveying tube (21) and an inclined transition tube (22), characterized in that: The low-end feed area of ​​the inclined transition tube (22) is provided with an air inlet (6), and the air inlet (6) is provided with an air blowing mechanism (3). The PTA accumulated at the feed end of the inclined transition tube (22) is blown away by the air blowing mechanism (3).

2. The device for improving PTA tubular chain conveying material jamming according to claim 1, characterized in that: The air blowing mechanism (3) includes a transfer pipe (31) with one end connected to the air inlet (6), a manual valve (34) located at the outer end of the transfer pipe (31), and a nitrogen pipe (33) connected to the manual valve (34).

3. The device for improving PTA tubular chain conveying material jamming according to claim 2, characterized in that: The air inlet (6) is a threaded hole.

4. The device for improving PTA tubular chain conveying material jamming according to claim 2, characterized in that: One end of the adapter pipe (31) is connected to the air inlet (6) by a threaded connection or welding.

5. The device for improving PTA tubular chain conveying material jamming according to claim 2, characterized in that: The outer end of the transfer pipe (31) is provided with a flange (32), and the manual valve (34) is connected through the flange (32).

6. The device for improving PTA tubular chain conveying material jamming according to claim 2, characterized in that: One end of the adapter pipe (31) is welded with a clamp (9), and the side wall of the clamp (9) is provided with a round hole (7) that communicates with the adapter pipe (31).

7. The device for improving PTA tubular chain conveying material jamming according to claim 2, characterized in that: The nitrogen pipe (33) is a 12mm explosion-proof PU pipe, and a pressure reducing valve (8) is connected to the nitrogen pipe (33).

Images