Device for quickly installing and fixing multistage enamel discharge tube of ozone generator in horizontal direction

Abstract

The utility model relates to the technical field of ozone preparation, in particular to a device for quickly installing and fixing a multistage enamel discharge tube of an ozone generator in the horizontal direction, which comprises a stainless steel outer electrode tube, and a first enamel ozone discharge tube and a second enamel ozone discharge tube are arranged in the stainless steel outer electrode tube. According to the utility model, the first enamel ozone discharge tube is fixedly connected with the internal thread connecting port at the tail end of the first enamel ozone discharge tube, and the internal thread connecting port at the tail end of the first enamel ozone discharge tube is in threaded connection with the internal thread and external thread stainless steel connecting bolt; the internal thread and external thread stainless steel connecting bolt is in threaded connection with a second enamel ozone discharge tube internal thread connecting port, and the second enamel ozone discharge tube internal thread connecting port is fixedly connected with a second enamel ozone discharge tube. The effect of eliminating the bow-shaped arc bending state of the whole enamel ozone generating tube installed in the stainless steel outer electrode tube can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ozone preparation, in particular to a device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in the horizontal direction. Background Art

[0002] An ozone generator is a device used to produce ozone gas.

[0003] Ozone is easy to decompose and cannot be stored. It needs to be produced on site and used on site. Therefore, ozone generators are required in all places where ozone can be used. Ozone generators are widely used in drinking water, sewage, industrial oxidation, food processing and preservation, pharmaceutical synthesis, space sterilization and other fields. However, the discharge air gap between the enamel surface of the enamel ozone discharge tube and the inner wall of the outer electrode stainless steel tube is about 0.5 mm. After being fired at a high temperature of more than 3000 degrees, the enamel ozone discharge tube with a length of more than 500 mm and a length of about (10)00 mm of the enamel surface of the ozone tube has a straightness deviation of more than 1 mm. This deviation is much larger than the discharge air gap of 0.5 mm of the enamel ozone discharge tube. The enamel surface of the enamel ozone discharge tube with a length of about (10)00 mm or even longer is distorted, slightly arched like a bow, and deviated from the horizontal line of the enamel tube by more than 0.1 mm, resulting in the enamel ozone discharge tube being completely unable to be installed in the stainless steel outer electrode tube. Utility Model Content

[0004] The utility model aims to provide a device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in the horizontal direction, so as to solve the problem that the enamel ozone discharge tube proposed in the above background technology cannot be completely installed in a stainless steel outer electrode tube.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in the horizontal direction, comprising a stainless steel outer electrode tube, wherein a first enamel ozone discharge tube and a second enamel ozone discharge tube are arranged inside the stainless steel outer electrode tube, the surfaces of the first enamel ozone discharge tube and the second enamel ozone discharge tube are coated with an ozone tube outer enamel surface, the surface of the ozone tube outer enamel surface is wrapped and connected with an S-shaped tape, the surface of the first enamel ozone discharge tube is wrapped and connected with a left end front tape, the surface of the first enamel ozone discharge tube is wrapped and connected with a middle end front tape, the surface of the first enamel ozone discharge tube is wrapped and connected with a right end front tape, one end of the stainless steel outer electrode tube is provided with an air inlet, the other end of the stainless steel outer electrode tube is provided with an air outlet, and the end of the stainless steel outer electrode tube close to the air inlet is provided with At the high voltage extreme, one end of the stainless steel outer electrode tube close to the air inlet is fixedly connected with the left flower plate, one end of the first enamel ozone discharge tube away from the air inlet is fixedly connected with the internal thread connection port at the tail end of the first enamel ozone discharge tube, the surface of the internal thread connection port at the tail end of the first enamel ozone discharge tube is threadedly connected with internal and external thread stainless steel connecting bolts, the surface of the internal and external thread stainless steel connecting bolts is threadedly connected with the second enamel ozone discharge tube internal thread connection port, the surface of the second enamel ozone discharge tube is penetrated by a stainless steel external thread connecting rod, the surface of the stainless steel external thread connecting rod is threadedly connected with the tail end connecting rod and tightly fixed with a hexagonal nut, the end of the stainless steel outer electrode tube away from the air inlet is fixedly connected with the right flower plate, and the end of the second enamel ozone discharge tube close to the air outlet is fixedly connected with the second enamel ozone discharge tube tail connection port.

[0006] Preferably, the straightness of the enamel surface of the ozone tube meets the requirements, and the size of the enamel surface of the ozone tube is smaller than the size of the stainless steel outer electrode tube.

[0007] Preferably, the size difference between the enamel surface of the ozone tube and the stainless steel outer electrode tube is consistent with the thickness of the S-shaped tape, and the S-shaped tape is wound around the surface of the enamel surface of the ozone tube in an "S" shape.

[0008] Preferably, the first enamel ozone discharge tube and the second enamel ozone discharge tube are fixedly connected to the stainless steel outer electrode tube by an S-shaped tape, and the angle between the S-shaped tape and the horizontal direction is °.

[0009] Preferably, thread grooves are provided on the surfaces of the internally threaded and externally threaded stainless steel connecting bolts, and the stainless steel externally threaded connecting rod is threadedly connected to the thread grooves.

[0010] Preferably, the left flower plate and the right flower plate are both plate-shaped, the stainless steel external thread connecting rod is long rod-shaped, and the left flower plate and the right flower plate are distributed in two groups on the surface of the stainless steel outer electrode tube.

[0011] Preferably, the S-shaped tape is distributed in two groups on the surfaces of the first enameled ozone discharge tube and the second enameled ozone discharge tube respectively, and the first enameled ozone discharge tube is connected to the second enameled ozone discharge tube through internal thread and external thread stainless steel connecting bolts, the internal thread connection port at the tail end of the first enameled ozone discharge tube and the internal thread connection port of the second enameled ozone discharge tube.

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

[0013] 1. Through the fixed connection between the first enamel ozone discharge tube and the internal thread connection port at the tail end of the first enamel ozone discharge tube, the threaded connection between the internal thread connection port at the tail end of the first enamel ozone discharge tube and the internal thread and external thread stainless steel connecting bolts, the threaded connection between the internal thread and external thread stainless steel connecting bolts and the internal thread connection port of the second enamel ozone discharge tube, the fixed connection between the internal thread connection port of the second enamel ozone discharge tube and the second enamel ozone discharge tube, the fixed connection between the first enamel ozone discharge tube and the second enamel ozone discharge tube and the stainless steel outer electrode tube, the enamel tube is made into a short tube After the enameled ozone discharge tubes are connected and fixed in series, the length required for the ozone output required by the design of the ozone generating tube can be achieved, which can improve the linear accuracy of the fired enameled ozone discharge tube, ensure the outer circle geometric dimensions, ensure that the straightness of the enameled surface of the ozone tube meets the requirements, and ensure that the discharge air gap on all sides of the circle between the enameled surface of the ozone tube and the inner wall of the stainless steel outer electrode tube is consistent and uniform. By assembling a multi-stage enameled ozone generating tube in a stainless steel outer electrode tube, the bow-shaped arc bending state of the entire enameled ozone generating tube installed in the stainless steel outer electrode tube can be eliminated.

[0014] 2. Through the fixed connection between the stainless steel outer electrode tube and the first and second enameled ozone discharge tubes, the winding connection between the enameled surface of the ozone tube and the S-shaped tape, the fixed connection between the stainless steel outer electrode tube and the left flower plate, the fixed connection between the first enameled ozone discharge tube and the internal threaded connection port at the tail end of the first enameled ozone discharge tube, the threaded connection between the internal threaded connection port at the tail end of the first enameled ozone discharge tube and the internal threaded and external threaded stainless steel connecting bolts, the threaded connection between the internal threaded and external threaded stainless steel connecting bolts and the internal threaded connection port of the second enameled ozone discharge tube, the second enameled ozone discharge tube and the stainless steel The through connection of the steel external thread connecting rod, the threaded connection of the stainless steel external thread connecting rod and the tail end connecting rod and the hexagonal nut tightly fixed, the fixed connection of the stainless steel outer electrode tube and the right flower plate, and the fixed connection of the second enamel ozone discharge tube and the tail connection port of the second enamel ozone discharge tube make the entire ozone generator simple in structure, easy to install, and the installation process is clear at a glance. It can ensure the efficient, safe and stable operation of the enamel ozone discharge tube, as well as the long-term stable operation of the ozone generator equipment, increase the maintenance-free period, and reduce maintenance costs, effectively saving expenses, generating revenue and increasing benefits for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the improved structure of the horizontal installation and fixation of the multi-stage enamel discharge tube of the ozone generator of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0018] In the figure: 1. The first enameled ozone discharge tube; 2. The second enameled ozone discharge tube; 3. The air inlet; 4. The high voltage terminal; 5. The left side flower plate; 6. The left end front tape; 7. The middle end front tape; 8. The right end front tape; 9. The S-shaped tape; 10. The enameled surface of the ozone tube; 11. The stainless steel outer electrode tube; 12. The internal and external threaded stainless steel connecting bolts; 13. The internal threaded connection port at the tail end of the first enameled ozone discharge tube; 14. The internal threaded connection port at the second enameled ozone discharge tube; 15. The stainless steel external threaded connection rod; 16. The tail end connection rod and the hexagonal nut are tightened; 17. The air outlet; 18. The right side flower plate; 19. The tail end connection port of the second enameled ozone discharge tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 , an embodiment provided by the utility model:

[0021] A device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in the horizontal direction comprises a stainless steel outer electrode tube 11, a first enamel ozone discharge tube 1 and a second enamel ozone discharge tube 2 are arranged inside the stainless steel outer electrode tube 11, the surfaces of the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 are coated with an ozone tube outer enamel surface 10, the straightness of the ozone tube outer enamel surface 10 meets the requirements, the surface of the ozone tube outer enamel surface 10 is wound and connected with an S-shaped tape 9, the surface of the first enamel ozone discharge tube 1 is wound and connected with a left end front tape 6, and the first enamel ozone discharge tube 1 is wound and connected with a left end front tape 6. The surface of the ozone discharge tube 1 is wound with a middle end front tape 7, the surface of the first enamel ozone discharge tube 1 is wound with a right end front tape 8, the angle between the S-shaped tape 9 and the horizontal direction is 45 degrees, one end of the stainless steel outer electrode tube 11 is provided with an air inlet 3, the function of the air inlet 3 is to introduce an oxygen-containing gas source, the other end of the stainless steel outer electrode tube 11 is provided with an air outlet 17, the function of the air outlet 17 is to flow out the prepared ozone gas, and the end of the stainless steel outer electrode tube 11 close to the air inlet 3 is provided with a high voltage terminal 4, the high voltage terminal 4 plays a role in discharge, The end of the stainless steel outer electrode tube 11 close to the air inlet 3 is fixedly connected to the left flower plate 5, the end of the first enamel ozone discharge tube 1 away from the air inlet 3 is fixedly connected to the first enamel ozone discharge tube tail end internal thread connection port 13, the surface of the first enamel ozone discharge tube tail end internal thread connection port 13 is threadedly connected with an internal thread and an external thread stainless steel connecting bolt 12, the surface of the internal thread and the external thread stainless steel connecting bolt 12 is provided with a thread groove, and the surface of the internal thread and the external thread stainless steel connecting bolt 12 is threadedly connected with the second enamel ozone discharge tube internal thread connection port 14 The surface of the second enamel ozone discharge tube 2 is penetrated by a stainless steel external thread connecting rod 15, the surface of the stainless steel external thread connecting rod 15 is threadedly connected with a tail end connecting rod and tightly fixed with a hexagonal nut 16, the tail end connecting rod is rotated and the hexagonal nut 16 is tightly fixed to fix the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2, the end of the stainless steel outer electrode tube 11 away from the air inlet 3 is fixedly connected to the right side flower plate 18, and the end of the second enamel ozone discharge tube 2 close to the air outlet 17 is fixedly connected to the second enamel ozone discharge tube tail connection port 19.

[0022] Furthermore, the straightness of the enamel surface 10 of the ozone tube meets the requirements, and the size of the enamel surface 10 of the ozone tube is smaller than the size of the stainless steel outer electrode tube 11, so that the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 can be placed in the interior of the stainless steel outer electrode tube 11, and the oxygen-containing gas source can pass smoothly through the stainless steel outer electrode tube 11.

[0023] Furthermore, the size difference between the enamel surface 10 on the outer surface of the ozone tube and the stainless steel outer electrode tube 11 is consistent with the thickness of the S-shaped tape 9. The S-shaped tape 9 is wrapped around the surface of the enamel surface 10 on the outer surface of the ozone tube in an "S" shape, so that the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 can be placed just inside the stainless steel outer electrode tube 11 and fixedly connected to the stainless steel outer electrode tube 11.

[0024] Furthermore, the first enameled ozone discharge tube 1 and the second enameled ozone discharge tube 2 are fixedly connected to the stainless steel outer electrode tube 11 through the S-shaped tape 9, the angle between the S-shaped tape 9 and the horizontal direction is 45°, the S-shaped tape 9 and the inner wall of the stainless steel outer electrode tube 11 can be separated to maintain an "S"-shaped air gap channel, the S-shaped tape 9 is an insulating material, and the stainless steel outer electrode tube 11 is located in the left flower plate 5 and the right flower plate 18 as a low voltage extreme.

[0025] Furthermore, a thread groove is provided on the surface of the internally threaded and externally threaded stainless steel connecting bolt 12, and the stainless steel externally threaded connecting rod 15 is threadedly connected to the thread groove. The outer surface of the internally threaded and externally threaded stainless steel connecting bolt 12 is also distributed with threads, which are respectively threadedly connected to the internally threaded connecting port 13 at the tail end of the first enameled ozone discharge tube and the internally threaded connecting port 14 of the second enameled ozone discharge tube.

[0026] Furthermore, the left flower plate 5 and the right flower plate 18 are both plate-shaped, the stainless steel external thread connecting rod 15 is long rod-shaped, and the left flower plate 5 and the right flower plate 18 are distributed in two groups on the surface of the stainless steel outer electrode tube 11. The oxygen-containing gas source enters the air gap channel between the enamel surface 10 of the ozone tube and the stainless steel outer electrode tube 11 from the air inlet 3, flows along both sides of the S-shaped tape 9, passes through the high voltage extreme point 4 and the low voltage extreme point corona discharge to form ozone gas, and flows out from the air outlet 17.

[0027] Furthermore, the S-shaped tape 9 is distributed in two groups on the surfaces of the first enameled ozone discharge tube 1 and the second enameled ozone discharge tube 2 respectively. The S-shaped tape 9 fixes the first enameled ozone discharge tube 1 and the second enameled ozone discharge tube 2 on the inner wall of the stainless steel outer electrode tube 11. The first enameled ozone discharge tube 1 is connected to the second enameled ozone discharge tube 2 through internal and external threaded stainless steel connecting bolts 12, the internal threaded connection port 13 at the tail end of the first enameled ozone discharge tube and the internal threaded connection port 14 of the second enameled ozone discharge tube.

[0028] Working principle: The S-shaped tape 9 wound on the enamel surface 10 of the ozone tube is an insulating material with a thickness of about 0.5mm and a width of 5mm. The S-shaped channel increases the length by about 30% compared with the straight-line distance. When the ozone tube is placed horizontally, the S-shaped tape 9 wound on the enamel surface 10 of the ozone tube places the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 on the inner wall of the stainless steel outer electrode tube 11, and at the same time separates the enamel surface 10 of the ozone tube from the inner wall of the stainless steel outer electrode tube 11 to maintain an S-shaped air gap channel. The first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 are connected to each other. The high voltage pole 4 is made of metal steel, and the stainless steel outer electrode tube 11 is located inside the left flower plate 5 and the right flower plate 18 as the low voltage pole. The first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 are fixedly installed on the inner wall of the stainless steel outer electrode tube 11 through the S-shaped tape 9. The oxygen-containing gas source enters the air gap channel between the enamel surface 10 of the ozone tube and the stainless steel outer electrode tube 11 from the air inlet 3, flows along both sides of the S-shaped tape 9, passes through the high voltage pole 4 and the stainless steel outer electrode tube 11, and corona discharges to form ozone gas that flows out from the air outlet 17, completing the preparation process of forming ozone from oxygen.

[0029] The stainless steel external thread connecting rod 15 passes through the middle of the second enamel ozone discharge tube 2, and the front end of the stainless steel external thread connecting rod 15 is screwed into the internal thread hole of the internal thread and the external thread stainless steel connecting bolt 12. The external thread tail end of the stainless steel external thread connecting rod 15 is installed with a tail end connecting rod and a hexagonal nut 16 is tightly fixed. The tail end connecting rod is rotated and the hexagonal nut 16 is tightly fixed, so that the second enamel ozone discharge tube 2 and the first enamel ozone discharge tube tail end internal thread connection port 13 are tightly fixed and installed, and the tightening degree reaches 70%, that is, the second enamel ozone discharge tube 2 cannot be completely tightened, leaving about 30% of the tightness, and the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 assembly that is initially connected and fixed is slowly screwed into the stainless steel outer electrode tube 11 to a predetermined position, and then the tail end connection on the tail end of the stainless steel external thread connecting rod 15 is tightened with a socket wrench. The pull rod is tightened and the hexagonal nut 16 is fixed, so that the second enamel ozone discharge tube 2 is completely tightened. Because the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 assembly are connected with about 30% of tightness, after being installed in the stainless steel outer electrode tube 11, they are naturally horizontal and straight, and after the tail end connection pull rod is tightly fixed and the hexagonal nut 16 is tightly fixed, the horizontal straight line is still maintained without forming a bow-shaped arc bend, ensuring that the straightness of the enamel surface 10 of the ozone tube meets the requirements, achieving the discharge air gap on the circumference of the enamel surface 10 of the ozone tube and the inner wall of the stainless steel outer electrode tube 11 is consistent and uniform, the first enamel ozone discharge tube 1 and the second enamel ozone discharge tube 2 are always at a uniform size distance of the corona discharge air gap, which can ensure the efficient, safe and stable operation of the enamel ozone discharge tube, and achieve the effect of long-term stable operation of the ozone generator equipment.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in the horizontal direction, comprising a stainless steel outer electrode tube (11), characterized in that: The stainless steel outer electrode tube (11) is provided with a first enamel ozone discharge tube (1) and a second enamel ozone discharge tube (2) inside. The surfaces of the first enamel ozone discharge tube (1) and the second enamel ozone discharge tube (2) are coated with an ozone tube outer enamel surface (10). The surface of the ozone tube outer enamel surface (10) is wound with an S-shaped adhesive tape (9). The surface of the first enamel ozone discharge tube (1) is wound with a left end front adhesive tape (6). ) is wound around the surface of a middle end front adhesive tape (7), the surface of the first enamel ozone discharge tube (1) is wound around the surface of a right end front adhesive tape (8), an air inlet (3) is provided at one end of the stainless steel outer electrode tube (11), an air outlet (17) is provided at the other end of the stainless steel outer electrode tube (11), a high voltage terminal (4) is provided at one end of the stainless steel outer electrode tube (11) close to the air inlet (3), and a fixed The first enamel ozone discharge tube (1) is fixedly connected with a left flower plate (5); the end of the first enamel ozone discharge tube (1) away from the air inlet (3) is fixedly connected with the first enamel ozone discharge tube tail end internal thread connection port (13); the surface of the first enamel ozone discharge tube tail end internal thread connection port (13) is threadedly connected with an internal thread and an external thread stainless steel connecting bolt (12); the surface of the internal thread and the external thread stainless steel connecting bolt (12) is threadedly connected with the second enamel ozone discharge tube internal thread connection port (14); the surface of the second enamel ozone discharge tube (2) is penetrated by a stainless steel external thread connection rod (15); the surface of the stainless steel external thread connection rod (15) is threadedly connected with the tail end connection rod and is tightly fixed with a hexagonal nut (16); the end of the stainless steel outer electrode tube (11) away from the air inlet (3) is fixedly connected with the right flower plate (18); the end of the second enamel ozone discharge tube (2) close to the air outlet (17) is fixedly connected with the second enamel ozone discharge tube tail end connection port (19).

2. According to claim 1, a device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction, characterized in that: The straightness of the enamel surface (10) on the outer surface of the ozone tube meets the requirements, and the size of the enamel surface (10) on the outer surface of the ozone tube is smaller than the size of the stainless steel outer electrode tube (11).

3. The device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction according to claim 1, characterized in that: The size difference between the enamel surface (10) on the outer surface of the ozone tube and the stainless steel outer electrode tube (11) is consistent with the thickness of the S-shaped adhesive tape (9), and the S-shaped adhesive tape (9) is wound around the surface of the enamel surface (10) on the outer surface of the ozone tube in an "S" shape.

4. The device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction according to claim 1, characterized in that: The first enamel ozone discharge tube (1) and the second enamel ozone discharge tube (2) are fixedly connected to the stainless steel outer electrode tube (11) via an S-shaped adhesive tape (9), and the angle between the S-shaped adhesive tape (9) and the horizontal direction is 45°.

5. The device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction according to claim 1, characterized in that: The inner thread and the outer thread stainless steel connecting bolt (12) are provided with thread grooves on their surfaces, and the stainless steel outer thread connecting rod (15) is threadedly connected to the thread grooves.

6. The device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction according to claim 1, characterized in that: The left flower plate (5) and the right flower plate (18) are both plate-shaped, the stainless steel external thread connecting rod (15) is long rod-shaped, and the left flower plate (5) and the right flower plate (18) are both distributed in two groups on the surface of the stainless steel outer electrode tube (11).

7. The device for quickly rotating and fixing a multi-stage enamel discharge tube of an ozone generator in a horizontal direction according to claim 1, characterized in that: The S-shaped adhesive tape (9) is distributed in two groups on the surface of the first enameled ozone discharge tube (1) and the surface of the second enameled ozone discharge tube (2), respectively; the first enameled ozone discharge tube (1) is connected to the second enameled ozone discharge tube (2) via internally threaded and externally threaded stainless steel connecting bolts (12), an internally threaded connecting port (13) at the tail end of the first enameled ozone discharge tube, and an internally threaded connecting port (14) at the second enameled ozone discharge tube.

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