Electrostatic and dust removal device for PFA (Polyfluoroalkoxy) pipe

Abstract

The utility model relates to a PFA pipe static electricity and dust removal device which comprises a static electricity removal assembly and an air blowing assembly, the static electricity removal assembly comprises an annular body and a plurality of high-voltage and high-frequency discharge needles, and the high-voltage and high-frequency discharge needles are radially arranged on the inner wall of the annular body at intervals; the blowing assembly comprises an annular air nozzle and an air pump, the annular air nozzle is connected with the annular body, the circle center of the annular body and the circle center of the annular air nozzle are located on the same axis extension line, the annular air nozzle is provided with an annular air outlet, the annular air outlet faces the high-voltage high-frequency spray point, and the air pump is connected with the annular air nozzle. And the air pump is connected with the annular air tap through a pipeline. The method has the effect of improving the cleanliness of the PFA pipe.

Description

Technical Field

[0001] The present application relates to the field of PFA tube production equipment, and in particular to a PFA tube electrostatic dust removal device. Background Art

[0002] PFA tubes are widely used in chemical industry, semiconductor manufacturing, biomedicine and other industries. They are suitable for transferring various strong acid and alkali solutions, solvents and high-purity materials. Therefore, the cleanliness level of PFA tube production itself is required to be relatively high.

[0003] Existing PFA tubes are usually extruded through an extruder and then cooled. In this process, a traction mechanism is needed for traction and transportation. When the traction mechanism pulls the pipe through a belt, it is easy for the pipe surface to have static electricity, which easily attracts dust and reduces the cleanliness of the pipe surface. Therefore, it needs to be improved. Utility Model Content

[0004] In order to improve the cleanliness of PFA tubes, the present application provides a PFA tube electrostatic dust removal device.

[0005] A PFA tube static electricity and dust removal device provided in the present application adopts the following technical solution: a PFA tube static electricity and dust removal device, including a static electricity removal component and a blowing component, the static electricity removal component includes an annular body and a plurality of high-voltage and high-frequency discharge needles, and the plurality of high-voltage and high-frequency discharge needles are radially arranged on the inner wall of the annular body at intervals; the blowing component includes an annular air nozzle and an air pump, the annular air nozzle is connected to the annular body, and the centers of the annular body and the annular air nozzle are on the same axial extension line, the annular air nozzle has an annular air outlet, the annular air outlet faces the high-voltage and high-frequency discharge needles, and the air pump is connected to the annular air nozzle through a pipeline.

[0006] By adopting the above technical solution, the PFA tube passes through the annular body and the annular air nozzle, and the clean air blown out by the annular air nozzle blows a large number of positive and negative charges on the high-voltage and high-frequency discharge needle to the surface of the PFA tube to neutralize the static electricity, and at the same time removes the dust attached to the surface of the tube body. The annular air nozzle arranged in an annular structure and the plurality of high-voltage and high-frequency discharge needles arranged at intervals on the annular body improve the cleaning effect of the tube surface.

[0007] Preferably, the annular air nozzle comprises an air nozzle outer ring and an air nozzle inner ring, the air nozzle inner ring is sleeved on the air nozzle outer ring, an annular cavity is formed between the air nozzle inner ring and the air nozzle outer ring, and the annular cavity gradually closes toward one end to form the annular air outlet.

[0008] By adopting the above technical solution, an annular cavity is conveniently formed by the air nozzle inner ring and the air nozzle outer ring kit, thereby reducing the cost of the annular air nozzle.

[0009] Preferably, the inner wall of the air nozzle outer ring is provided with an internal thread, the outer surface of the air nozzle inner ring is provided with an external thread, and the air nozzle outer ring and the air nozzle inner ring are threadedly connected.

[0010] By adopting the above technical solution, by arranging an internal thread on the inner wall of the outer ring of the air nozzle and arranging an external thread on the outer surface of the inner ring of the air nozzle, it is convenient to fix the connection between the inner ring of the air nozzle and the outer ring of the air nozzle, and at the same time, it is convenient to adjust the position between the outer ring of the air nozzle and the inner ring of the air nozzle, so as to adjust the size of the annular air outlet, and then adjust the air pressure, thereby improving the cleaning degree of PFA tubes with different diameters.

[0011] Preferably, the annular body is made of ceramic insulating material.

[0012] By adopting the above technical solution, the annular body made of ceramic insulating material can have better insulation performance, thereby avoiding conduction short circuit between adjacent high-voltage and high-frequency discharge needles.

[0013] Preferably, a bracket is further included, the bracket includes a base and two vertical rods, the two vertical rods are vertically fixed on the base at intervals, and the surface of the outer ring of the air nozzle away from one end of the annular body is fixedly connected to the two vertical rods.

[0014] By adopting the above technical solution, the static electricity removal and dust removal device can be conveniently moved to the required work station through the bracket to carry out dust removal work on the pipe.

[0015] Preferably, both of the two vertical rods are vertically provided with long waist holes, and the outer ring of the air nozzle is threadedly connected with a tightening bolt passing through the long waist holes.

[0016] By adopting the above technical solution, the height of the annular air nozzle and the annular body can be easily adjusted through the long waist hole vertically arranged on the vertical rod, so as to facilitate the adaptation of the height of the PFA tube in the production process.

[0017] Preferably, the outer ring of the air valve is threadedly connected with a plurality of locking bolts that abut against the inner ring of the air valve at intervals along the circumferential direction.

[0018] By adopting the above technical solution, the inner ring of the air nozzle is sleeved on the outer ring of the air nozzle, and the locking bolt threadedly connected to the outer ring of the air nozzle abuts against the inner ring of the air nozzle, thereby facilitating the fixed sleeve connection between the inner ring of the air nozzle and the outer ring of the air nozzle, and also facilitating the axial movement of the position between the outer ring of the air nozzle and the inner ring of the air nozzle, thereby adjusting the size of the annular air outlet, and then adjusting the air pressure, thereby improving the cleaning degree of PFA tubes of different diameters.

[0019] Preferably, an embedding groove is provided in the circumferential direction of the inner ring of the air nozzle, an annular sealing ring is provided in the embedding groove, and the annular sealing ring contacts the inner wall of the outer ring of the air nozzle.

[0020] By adopting the above technical solution, the annular sealing ring is arranged on the inner ring of the air nozzle, thereby improving the air tightness of the contact between the inner ring of the air nozzle and the outer ring sleeve of the air nozzle.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The PFA tube passes through the annular body and the annular air nozzle. The clean air blown out by the annular air nozzle blows a large number of positive and negative charges on the high-voltage and high-frequency discharge needle to the surface of the PFA tube to neutralize the static electricity, and at the same time removes the dust attached to the surface of the tube body. The annular air nozzle arranged in an annular structure and the several high-voltage and high-frequency discharge needles arranged at intervals on the annular body improve the cleaning effect of the tube surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the installation structure of the static electricity removal component and the air blowing component in Example 1 of the present application.

[0024] Figure 2 It is a front view of the anti-static and dust removal device in Example 1 of the present application.

[0025] Figure 3 It is a schematic diagram of the installation structure of the air nozzle outer ring and the air nozzle inner ring in Example 2 of the present application.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. Anti-static component; 11. Ring body; 12. High-voltage and high-frequency discharge needle; 2. Blowing component; 21. Ring-shaped air nozzle; 211. Outer ring of air nozzle; 212. Inner ring of air nozzle; 2121. Embedded groove; 2122. Ring-shaped sealing ring; 213. Ring-shaped cavity; 214. Ring-shaped air outlet; 215. Interface; 216. Locking bolt; 22. Air pump; 3. Bracket; 31. Base; 32. Vertical rod; 321. Long waist hole; 33. Tightening bolt. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] Example 1: This application example discloses a PFA tube electrostatic dust removal device. Figure 1 The PFA tube static electricity removal and dust removal device includes a static electricity removal component 1 and a blowing component 2. The static electricity removal component 1 and the blowing component 2 are connected. The static electricity removal component 1 is used to generate a large number of positive and negative charges. The blowing component 2 is used to blow clean air to the static electricity removal component 1, and blow the positive and negative charges on the static electricity removal component 1 to the moving PFA tube to neutralize the charge on the surface of the PFA tube, and at the same time remove the dust attached to the surface of the PFA tube.

[0029] Specifically, the static electricity removal component 1 includes a ring body 11 and a plurality of high-voltage high-frequency discharge needles 12, wherein the plurality of high-voltage high-frequency discharge needles 12 are radially arranged at intervals on the inner wall of the ring body 11, and the high-voltage high-frequency discharge needles 12 are connected to an external power supply through a high-voltage high-frequency generator. In order to improve the insulation performance between adjacent high-voltage high-frequency discharge needles 12, the ring body 11 in this embodiment is made of ceramic insulating material, thereby reducing the situation of conduction short circuit between adjacent high-voltage high-frequency discharge needles 12.

[0030] The blowing assembly 2 includes an annular air nozzle 21 and an air pump 22. The annular air nozzle 21 is fixedly connected to the annular body 11, and the centers of the annular body 11 and the annular air nozzle 21 are on the same axis extension line. The annular air nozzle 21 and the annular body 11 allow the PFA tube to pass through. The annular air nozzle 21 includes an air nozzle outer ring 211 and an air nozzle inner ring 212. The air nozzle inner ring 212 is sleeved on the air nozzle outer ring 211. An annular cavity 213 is formed between the air nozzle inner ring 212 and the air nozzle outer ring 211. The annular cavity 213 gradually closes toward one end to form an annular air outlet 214. The annular air outlet 214 faces the high-voltage and high-frequency discharge needle 12. An interface 215 communicating with the annular cavity 213 is provided on the air nozzle outer ring 211, and the air pump 22 is connected to the interface 215 through a pipeline.

[0031] The PFA tube passes through the annular body 11 and the annular air nozzle 21. The clean gas blown out by the annular air nozzle 21 blows a large number of positive and negative charges on the high-voltage and high-frequency discharge needle 12 to the surface of the PFA tube to neutralize static electricity and remove dust attached to the surface of the tube. The annular air nozzle 21 is arranged in an annular structure and a plurality of high-voltage and high-frequency discharge needles 12 are arranged at intervals on the annular body 11, thereby improving the cleaning effect of the surface of the tube.

[0032] In order to adjust the size of the annular air outlet 214 to adapt to the requirements of the cleaning degree of different pipe diameters, the inner wall of the air nozzle outer ring 211 in this embodiment is provided with an internal thread, and the outer surface of the air nozzle inner ring 212 is provided with an external thread, and the air nozzle outer ring 211 and the air nozzle inner ring 212 are threadedly connected. By providing the internal thread on the inner wall of the air nozzle outer ring 211 and the external thread on the outer surface of the air nozzle inner ring 212, it is convenient to fix the connection between the air nozzle inner ring 212 and the air nozzle outer ring 211, and it is convenient to adjust the axial position between the air nozzle outer ring 211 and the air nozzle inner ring 212, so as to adjust the size of the annular air outlet 214, and then adjust the air pressure, so as to improve and adapt the cleaning ability of PFA pipes with different pipe diameters.

[0033] Reference Figure 2, and also includes a bracket 3, the bracket 3 includes a base 31 and two vertical rods 32, the two vertical rods 32 are fixed on the base 31 at intervals, and the surface of the outer ring 211 of the air nozzle away from one end of the annular body 11 is fixedly connected to the two vertical rods 32. Specifically, the two vertical rods 32 are vertically provided with long waist holes 321, and the outer ring 211 of the air nozzle is threadedly connected with a tightening bolt 33 passing through the long waist holes 321. The long waist holes 321 vertically arranged on the vertical rods 32 facilitate the adjustment of the height of the annular air nozzle 21 and the annular body 11, thereby facilitating the adjustment of the height of the electrostatic dust removal device to adapt to the height of the PFA pipe during transportation during the production process.

[0034] The implementation principle of a PFA tube anti-static and dust removal device in an embodiment of the present application is as follows: the PFA tube produced by the extruder is subjected to a cooling process through a traction mechanism and then anti-static and dust removal is carried out. The PFA tube passes through an annular body 11 and an annular air nozzle 21. The clean gas blown out by the annular air nozzle 21 blows a large number of positive and negative charges on the high-voltage and high-frequency discharge needle 12 to the surface of the PFA tube to neutralize the static electricity, and at the same time removes the dust attached to the surface of the tube body.

[0035] Example 2: Reference Figure 3 , which is different from the first embodiment, is the fixing method between the air nozzle outer ring 211 and the air nozzle inner ring 212. Specifically, the air nozzle outer ring 211 is threadedly connected with a plurality of locking bolts 216 that abut against the air nozzle inner ring 212 at intervals along the circumferential direction. The air nozzle inner ring 212 is sleeved on the air nozzle outer ring 211, and the locking bolts 216 threadedly connected to the air nozzle outer ring 211 abut against the air nozzle inner ring 212, thereby facilitating the fixed sleeve connection between the air nozzle inner ring 212 and the air nozzle outer ring 211, and also facilitating the axial movement of the position between the air nozzle outer ring 211 and the air nozzle inner ring 212, thereby adjusting the size of the annular air outlet 214, and then adjusting the air pressure, improving and adapting the cleaning ability of PFA tubes with different diameters.

[0036] The valve inner ring 212 is provided with an embedding groove 2121 in the circumferential direction, and an annular sealing ring 2122 is provided in the embedding groove 2121, and the annular sealing ring 2122 contacts the inner wall of the valve outer ring 211. By providing the annular sealing ring 2122 on the valve inner ring 212, the airtightness of the valve inner ring 212 and the valve outer ring 211 is improved.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PFA tube electrostatic dust removal device, characterized in that: The invention comprises a static electricity removal component (1) and an air blowing component (2), wherein the static electricity removal component (1) comprises an annular body (11) and a plurality of high-voltage high-frequency discharge needles (12), wherein the plurality of high-voltage high-frequency discharge needles (12) are radially arranged at intervals on the inner wall of the annular body (11); the air blowing component (2) comprises an annular air nozzle (21) and an air pump (22), wherein the annular air nozzle (21) is connected to the annular body (11), and the centers of the annular body (11) and the annular air nozzle (21) are on the same axis extension line, the annular air nozzle (21) has an annular air outlet (214), and the annular air outlet (214) faces the high-voltage high-frequency discharge needles (12), and the air pump (22) is connected to the annular air nozzle (21) via a pipeline.

2. The PFA tube electrostatic dust removal device according to claim 1, characterized in that: The annular air nozzle (21) comprises an air nozzle outer ring (211) and an air nozzle inner ring (212); the air nozzle inner ring (212) is sleeved on the air nozzle outer ring (211); an annular cavity (213) is formed between the air nozzle inner ring (212) and the air nozzle outer ring (211); the annular cavity (213) gradually closes toward one end to form the annular air outlet (214).

3. The PFA tube electrostatic dust removal device according to claim 2, characterized in that: The inner wall of the air nozzle outer ring (211) is provided with an internal thread, the outer surface of the air nozzle inner ring (212) is provided with an external thread, and the air nozzle outer ring (211) and the air nozzle inner ring (212) are threadedly connected.

4. The PFA tube electrostatic dust removal device according to claim 1, characterized in that: The annular body (11) is made of ceramic insulating material.

5. The PFA tube electrostatic dust removal device according to claim 2, characterized in that: The invention also comprises a bracket (3), wherein the bracket (3) comprises a base (31) and two vertical rods (32), wherein the two vertical rods (32) are fixed on the base (31) at intervals in a vertical direction, and a surface of an end of the outer ring (211) of the air nozzle away from the annular body (11) is fixedly connected to the two vertical rods (32).

6. The PFA tube electrostatic dust removal device according to claim 5, characterized in that: The two vertical rods (32) are both vertically provided with long waist holes (321), and the outer ring (211) of the air nozzle is threadedly connected with a tightening bolt (33) passing through the long waist holes (321).

7. The PFA tube electrostatic dust removal device according to claim 2, characterized in that: The air nozzle outer ring (211) is threadedly connected with a plurality of locking bolts (216) spaced apart along the circumferential direction and abutting against the air nozzle inner ring (212).

8. The PFA tube electrostatic dust removal device according to claim 7, characterized in that: The air nozzle inner ring (212) is provided with an embedding groove (2121) in the circumferential direction, and an annular sealing ring (2122) is provided in the embedding groove (2121), and the annular sealing ring (2122) is in contact with the inner wall of the air nozzle outer ring (211).

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