Constant-temperature structure of double-screw granulator shell ring

Abstract

A constant-temperature structure of a double-screw granulator shell section comprises a first arc-shaped heating plate and a second arc-shaped heating plate which are arranged on the double-screw granulator shell section in a bilateral symmetry mode, and further comprises compressed air pipes and a gas diffusion hopper, and the compressed air pipes are arranged below the shell section, extend in the length direction of the shell section and are arranged in a staggered mode. A hopper opening of the gas diffusion hopper is a flat opening and is matched with the length of the arc-shaped heating plate, and the gas diffusion hopper is fixedly connected with one end of a connecting pipe and is suspended below the shell ring, so that the hopper opening of the gas diffusion hopper faces upwards and corresponds to a gap between the lower edges of the first arc-shaped heating plate and the second arc-shaped heating plate; the other end of the connecting pipe is connected with a compressed air pipe, and a valve is arranged to control opening and closing. The device is simple in structure, low in use cost and capable of maintaining the temperature of the shell ring of the double-screw granulator for a long time with low energy consumption.

Description

Technical Field

[0001] The utility model relates to the chemical industry field, in particular to a constant temperature structure for the barrel section of a twin-screw granulator. Background Art

[0002] Chemical enterprises use tetrafluoroethylene and hexafluoropropylene as raw materials to obtain a polymerization liquid through pressure polymerization. The polymerization liquid is sent to a twin-screw granulator for granulation after demulsification in a coagulation barrel to obtain a product.

[0003] Arc-shaped heating plates are symmetrically arranged on the left and right sides of each barrel section of the twin-screw granulator to heat the barrel section. Air blowers are installed at intervals at the bottom of the two heating plates, and multiple air blowers are used to cool the heating plates. When the temperature exceeds the set temperature, the corresponding air blower starts. When the temperature is lower than the set signal, the heating plate heats up and the air blower stops to maintain a constant temperature.

[0004] However, in this constant temperature structure, the air blower starts frequently, resulting in high energy consumption. During operation, the barrel section occasionally leaks materials, and the powdered materials are ejected and melted when encountering the heating plate, dripping from the gap at the bottom of the two heating plates and falling onto the fan blades of the air blower, causing the fan blades to become unstable and resulting in abnormal vibration and noise.

[0005] Therefore, how to design a constant temperature structure for the barrel section of a twin-screw granulator with a simple structure, low energy consumption, and long service life is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of the utility model is to provide a constant temperature structure for the barrel section of a twin-screw granulator in view of the deficiencies of the prior art. The structure is simple, the use cost is low, and it can maintain the temperature of the barrel section of the twin-screw granulator with low energy consumption for a long time.

[0007] The technical solution of the utility model is: a constant temperature structure for the barrel section of a twin-screw granulator, including a first arc-shaped heating plate and a second arc-shaped heating plate symmetrically arranged on the left and right sides of the barrel section of the twin-screw granulator. It also includes a compressed air pipe and a gas diffusion hopper. The compressed air pipe is arranged below the barrel section, extends along the length direction of the barrel section, and is arranged in a staggered manner. The mouth of the gas diffusion hopper is flat and is adapted to the length of the arc-shaped heating plate. The gas diffusion hopper is fixedly connected to one end of a connecting pipe and is suspended below the barrel section with the mouth of the gas diffusion hopper facing upward, corresponding to the gap between the lower sides of the first arc-shaped heating plate and the second arc-shaped heating plate. The other end of the connecting pipe is connected to the compressed air pipe, and a valve is provided to control the opening and closing.

[0008] Flanges are respectively arranged on the upper and lower sides of the first arc-shaped heating plate and the second arc-shaped heating plate. The first arc-shaped heating plate and the second arc-shaped heating plate are clamped on the barrel section of the twin-screw granulator by passing multiple bolts through the flanges and threadedly matching with nuts.

[0009] The arcs corresponding to the circles where the first arc-shaped heating plate and the second arc-shaped heating plate are located are both inferior arcs.

[0010] The connecting pipe includes a welding pipe and a supporting pipe. One end of the welding pipe is welded to the compressed air pipe and is connected to the compressed air pipe, and the other end extends vertically upward. The supporting pipe has an N-shaped structure. One end of the supporting pipe is connected to the extended end of the welding pipe through a valve, and the other end extends vertically upward, is connected to the gas diffusion bucket and forms a support.

[0011] The compressed gas transported in the compressed air pipe is compressed air.

[0012] The above technical solution has the following beneficial effects:

[0013] 1. The constant temperature structure of the barrel section of the twin-screw granulator includes a first arc heating plate and a second arc heating plate which are symmetrically arranged on the barrel section of the twin-screw granulator, and are used to heat the barrel section of the twin-screw granulator. It also includes a compressed air pipe and a gas diffusion bucket, which are used to cool the heating plate. The compressed air pipe is arranged below the barrel section, extends along the length direction of the barrel section, and is staggered, which is convenient for installation and arrangement of the compressed air pipe. The mouth of the gas diffusion bucket is flat and adapted to the length of the arc heating plate. The bucket body of the gas diffusion bucket forms a buffer space, so that the gas is evenly diffused in the bucket body, and then evenly discharged through the flat bucket mouth. The gas diffusion hopper is fixedly connected to one end of a connecting pipe and is suspended below the cylinder section so that the hopper mouth of the gas source diffusion hopper faces upward, corresponding to the gap between the lower sides of the first arc-shaped heating plate and the second arc-shaped heating plate. The other end of the connecting pipe is connected to the compressed air pipe, and a valve is provided to control the opening and closing. That is, the compressed gas in the compressed air pipe enters the gas diffusion hopper through the connecting pipe, and after being buffered and stabilized, it is evenly discharged through the flat mouth and blown to the gap between the lower sides of the first arc-shaped heating plate and the second arc-shaped heating plate. The first arc-shaped heating plate and the second arc-shaped heating plate are cooled according to demand without generating noise. Even if a small amount of leaked powder melts and drips, it will not affect the normal operation of the gas diffusion hopper, thereby ensuring the long-term normal operation of the constant temperature structure.

[0014] 2. The upper and lower sides of the first arc-shaped heating plate and the second arc-shaped heating plate are respectively provided with folded edges. The first arc-shaped heating plate and the second arc-shaped heating plate are fastened to the barrel section of the twin-screw granulator by passing a plurality of bolts through the folded edges and threadedly matched with nuts. This makes it convenient to install and disassemble the arc-shaped heating plate, and also expands the heat dissipation area of the arc-shaped heating plate, which is beneficial to improving the heat dissipation efficiency of the arc-shaped heating plate.

[0015] 3. The connecting pipe includes a welded pipe and a support pipe. One end of the welded pipe is welded to the compressed air pipe and is in communication with the compressed air pipe, and the other end extends vertically upward. The support pipe is in an N-shaped structure. One end of the support pipe is connected to the extended end of the welded pipe through a valve, and the other end extends vertically upward and is in communication with and forms a support for the gas diffusion hopper. The connecting pipe with this structure is relatively convenient to maintain, and it is convenient to adjust the position of the support pipe, which is beneficial to adjusting the position of the gas diffusion hopper.

[0016] The following is a further description in conjunction with the drawings and specific embodiments. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is Figure 1 the A-direction view of

[0019] In the drawings, 1 is the first arc-shaped heating plate, 2 is the second arc-shaped heating plate, 3 is the compressed air pipe, 4 is the gas diffusion hopper, 5 is the connecting pipe, 51 is the welded pipe, 52 is the support pipe, 6 is the valve, and 7 is the hem. Specific Embodiments

[0020] See Figure 1 and Figure 2, which is a specific embodiment of the constant temperature structure of the barrel section of a twin-screw granulator. The constant temperature structure of the barrel section of the twin-screw granulator includes a first arc heating plate 1 and a second arc heating plate 2 which are symmetrically arranged on the barrel section of the twin-screw granulator, and also includes a compressed air pipe 3 and a gas diffusion bucket 4. In this embodiment, the arcs corresponding to the circles where the first arc heating plate 1 and the second arc heating plate 2 are located are inferior arcs, that is, the first arc heating plate and the second arc heating plate are closed on the barrel section of the twin-screw granulator, and there are gaps between the upper and lower sides of the first arc heating plate and the second arc heating plate. In order to facilitate installation and disassembly, the upper and lower sides of the first arc heating plate 1 and the second arc heating plate 2 are respectively provided with folded edges 7. The first arc heating plate 1 and the second arc heating plate 2 are clamped on the barrel section of the twin-screw granulator by passing a plurality of bolts through the folded edges and threadedly matching nuts. Usually, the length of the arc heating plate is adapted to the length of the barrel section. A twin-screw granulator has multiple barrel sections, and adjacent barrel sections are connected by flanges to form a whole. The compressed air pipe 3 is arranged below the cylinder section, extends along the length direction of the cylinder section, and is arranged in a staggered manner. The compressed air transported in the compressed air pipe 3 is compressed air. The mouth of the gas diffusion hopper 4 is flat and adapted to the length of the arc-shaped heating plate. The gas diffusion hopper 4 is fixedly connected to one end of a connecting pipe 5, and is suspended below the cylinder section so that the mouth of the gas source diffusion hopper 4 faces upward, corresponding to the gap between the lower sides of the first arc-shaped heating plate 1 and the second arc-shaped heating plate 2. The other end of the connecting pipe 5 is connected to the compressed air pipe 3, and a valve 6 is set to control the opening and closing. In this embodiment, the connecting pipe 5 includes a welding pipe 51 and a support pipe 52. One end of the welding pipe 51 is welded to the compressed air pipe 3 and communicates with the compressed air pipe 3, and the other end extends vertically upward. The support pipe 52 is an N-shaped structure. One end of the support pipe 52 is connected to the extended end of the welding pipe 51 through a valve 6, and the other end extends vertically upward, communicates with the gas diffusion hopper 4 and forms a support.

[0021] The working principle of the utility model is: when the temperature exceeds the set temperature, the valve opens, and the compressed air enters the gas diffusion bucket through the welding pipe and the support pipe, and blows to the gap between the first arc heating plate and the lower edge of the second arc heating plate through the bucket mouth to achieve cooling. When the temperature is lower than the set signal, the heating plate heats up, the valve closes, and the temperature is maintained constant.

Claims

1. A constant temperature structure for the barrel section of a twin-screw granulator, comprising a first arc-shaped heating plate (1) and a second arc-shaped heating plate (2) symmetrically arranged on the barrel section of the twin-screw granulator from left to right, characterized in that: It further includes a compressed air pipe (3) and a gas diffusion hopper (4). The compressed air pipe (3) is arranged below the cylinder section, extends along the length direction of the cylinder section, and is arranged in a staggered manner. The mouth of the gas diffusion hopper (4) is a flat mouth and is adapted to the length of the arc-shaped heating plate. The gas diffusion hopper (4) is fixedly connected to one end of a connecting pipe (5), is suspended below the cylinder section, and the mouth of the gas source diffusion hopper (4) faces upward, corresponding to the gap between the lower edges of the first arc-shaped heating plate (1) and the second arc-shaped heating plate (2). The other end of the connecting pipe (5) is connected to the compressed air pipe (3), and a valve (6) is provided to control the opening and closing.

2. The constant temperature structure of the barrel section of the twin-screw granulator according to claim 1, characterized in that: Flanges (7) are respectively arranged on the upper and lower edges of the first arc-shaped heating plate (1) and the second arc-shaped heating plate (2). The first arc-shaped heating plate (1) and the second arc-shaped heating plate (2) are fastened on the cylinder section of the twin-screw granulator by passing multiple bolts through the flanges and threadedly matching with nuts.

3. The constant temperature structure of the barrel section of the twin-screw granulator according to claim 1 or 2, characterized in that: The arcs corresponding to the circles where the first arc-shaped heating plate (1) and the second arc-shaped heating plate (2) are located are both minor arcs.

4. The constant temperature structure of the barrel section of the twin-screw granulator according to claim 1, wherein: The connecting pipe (5) includes a welded pipe (51) and a support pipe (52). One end of the welded pipe (51) is welded to the compressed air pipe (3) and is communicated with the compressed air pipe (3), and the other end extends vertically upward. The support pipe (52) is in an N-shaped structure. One end of the support pipe (52) is connected to the extended end of the welded pipe (51) through a valve (6), and the other end extends vertically upward and is communicated with the gas diffusion hopper (4) and forms a support.

5. The constant temperature structure of the barrel section of the twin-screw granulator according to claim 1, characterized in that: The compressed gas conveyed in the compressed air pipe (3) is compressed air.

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