Ultraviolet sterilizer for aquaculture

Abstract

The invention relates to the technical field of aquaculture ultraviolet sterilization, in particular to an aquaculture ultraviolet sterilizer which comprises a main body pipe, a water inlet pipe and a water outlet pipe are arranged on the side face of the main body pipe, the side face of the main body pipe is sleeved with a sealing plate in a threaded mode, and the other side of the main body pipe is sleeved with a sealing pipe in a threaded mode. A connecting pipe is installed on the other side of the sealing pipe in a threaded mode, a disinfection assembly is arranged in the center of the sealing pipe, a matching assembly is arranged on the side face of the sealing pipe, and an auxiliary assembly is arranged in the main body pipe. By arranging the disinfection assembly and the matching assembly, the interior of the main body pipe can be subjected to regional operation, so that the flowing time of water flow in the main body pipe is longer, the disinfection effect is better, and the sterilization lamp set is arranged in the center of the main body pipe, so that the sterilization lamp set is more durable, and the emission efficiency is more concentrated; in addition, the sterilization lamp set and the copper ion generator are convenient to assemble and disassemble and can be directly replaced from the side face, and installation and maintenance are convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of ultraviolet sterilization in aquaculture, in particular to an ultraviolet sterilizer used in aquaculture. Background Art

[0002] Aquaculture is a production activity of breeding, cultivating and harvesting aquatic plants and animals under human control. Aquaculture UV sterilizer is an auxiliary device used to sterilize the aquaculture waters during the aquaculture process. There are many types (pipeline UV sterilizer, submersible UV sterilizer and immersion UV sterilizer, etc.), which are widely used in the field of aquaculture. Among them, the pipeline ultraviolet sterilizer has the advantages of compact design and small space occupation, and is the most widely used type in the market. However, it is found that there are still certain problems in its actual application: the removal, cleaning or replacement of existing ultraviolet lamps is inconvenient, and the rear cover or front cover of the sterilization circulation pipeline needs to be disassembled and opened as a whole before the operation can be carried out; and scale is easily accumulated inside the sterilization circulation pipeline, making it inconvenient to clean it later; in addition, the sterilization of ultraviolet lamps is carried out by emitting ultraviolet light, and the emission range of ultraviolet light is limited, and it cannot guarantee the disinfection effect of all areas inside the water flow. It is necessary to set up multiple groups of ultraviolet lamps for use. For this reason, we propose an ultraviolet sterilizer for aquaculture. Summary of the invention

[0003] In order to overcome the technical problems existing in the above-mentioned prior art, the present invention provides an ultraviolet sterilizer for aquaculture.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a main body pipe, a water inlet pipe and a water outlet pipe are arranged on the side of the main body pipe, a sealing plate is threadedly sleeved on the side of the main body pipe, a sealing pipe is threadedly sleeved on the other side of the main body pipe, a connecting pipe is threadedly installed on the other side of the sealing pipe, a disinfection component is arranged at the center of the sealing pipe, a matching component is arranged on the side of the sealing pipe, and an auxiliary component is arranged inside the main body pipe; The disinfection assembly includes a mounting plate, a diffuser tube is arranged between the mounting plates, the mounting plate and the diffuser tube separate the internal area of ​​the main tube, and a germicidal lamp group is arranged inside the diffuser tube; A matching assembly matching plate, wherein a copper ion generator is arranged inside the matching plate; The auxiliary component comprises an auxiliary rod, a stirring block and a mounting block are arranged on the side of the auxiliary rod, a movable rod is arranged on the side of the mounting block, a cleaning rod is arranged on the side of the movable rod, and the cleaning rod can be elastically supported by the movable rod.

[0005] Furthermore, the disinfection component includes a mounting groove opened on the side of the main tube, a mounting plate movably installed inside the mounting groove, a connecting groove is opened on the side of the mounting plate away from the water inlet pipe, the diffuser tube is fixedly installed between the mounting plates, a cover sealing block is threadedly installed on the inner side of the cover sealing block away from the sealing plate, and the sterilization lamp group is threadedly installed on the inner side of the cover sealing block.

[0006] Furthermore, the mounting plate is a ladder-shaped plate and the side of the mounting plate is covered with an elastic rubber layer. One side of the diffuser tube passes through the sealing tube and the other side extends to the inside of the sealing plate. The germicidal lamp group is movably arranged inside the diffuser tube.

[0007] Furthermore, the mating component includes a mating plate fixedly installed at the bottom of the inner side of the main tube, a groove is provided on the side of the mating plate away from the water outlet pipe, a mounting hole is provided on the side of the sealing tube corresponding to the position of the mating plate, and the copper ion generator is threadedly installed inside the mounting hole.

[0008] Furthermore, the matching plate covers the water outlet pipe, and the copper ion generator penetrates the matching plate to its inner position.

[0009] Furthermore, the auxiliary component includes an auxiliary rod arranged inside the main tube, and the stirring blocks are fixedly sleeved on the sides of the two groups of auxiliary rods at equal intervals in staggered directions. The side of the sealing tube is provided with a matching groove corresponding to the position of the auxiliary rod, and a locking block is movably installed inside the matching groove.

[0010] Furthermore, the auxiliary component also includes a mounting block fixedly sleeved on the side of the auxiliary rod, a fixing rod is fixedly mounted on the side of the mounting block, a movable cavity is opened on the side of the fixing rod away from the mounting block, the movable rod is movably mounted inside the movable cavity, a support tube is fixedly connected between the side of the movable rod and the inner wall of the movable cavity, and the cleaning rod is fixedly mounted on the side of the movable rod.

[0011] Furthermore, one end of the auxiliary rod is movably arranged inside the sealing plate and the other end is attached to the side of the sealing tube. The locking block penetrates into the internal position of the auxiliary rod, the movable rod extends out of the movable cavity, and the support tube is movably arranged inside the movable cavity.

[0012] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. The present invention can perform zone-based operations on the inside of the main tube by setting a disinfection component and a matching component, so that water flows through the inside of the main tube for a longer time and the disinfection effect is better. The germicidal lamp group is set at the center of the main tube to make it more durable and the emission efficiency is more concentrated. Only a single germicidal lamp group is needed to ensure the sterilization effect and reduce energy consumption. In addition, the germicidal lamp group and the copper ion generator are easy to install and disassemble, and can be directly replaced from the side, which is convenient for installation and maintenance.

[0013] 2. The present invention can stir the water flowing through the main tube by setting auxiliary components, so that the water flow can circulate and fit close to the side of the diffuser tube to ensure that all bacteria in the water flow are killed. In addition, the cleaning rod is elastically fitted to the side of the passing component by other components to perform a cleaning operation, making subsequent cleaning and maintenance easier, and can clean the side of the diffuser tube to ensure the ultraviolet emission effect of the sterilization lamp group.

[0014] 3. The present invention provides a mounting plate, which can support the diffuser tube, making it easy to install and disassemble. The mounting plate is tapered near the side of the diffuser tube, which can increase the area of ​​the diffuser tube emitting ultraviolet rays. In addition, the mounting plate cooperates with the diffuser tube to perform zone-dividing operations on the inside of the main tube, which is easy to use.

[0015] 4. The present invention sets a locking block. When the locking block is installed, it limits the sealing tube. The thread is installed on the inner side of the bearing inside the auxiliary rod, which can seal the side of the sealing tube and support the auxiliary rod at the same time. The auxiliary rod is supported by the locking block and the sealing plate to rotate stably, ensuring the effect of the cleaning rod's rotation and stirring. When the locking block is removed, the auxiliary rod will not interfere with the sealing tube, which is convenient for the later removal of the sealing tube.

[0016] 5. The present invention provides a movable rod, a support tube and peripheral components. The movable rod provides elastic support for the cleaning rod, so that when the cleaning rod rotates, each component can be cleaned in close proximity. In addition, when the auxiliary rod is installed and disassembled, the movable rod makes the cleaning rod fit against the inner side of the main tube to provide stable support for the auxiliary rod, ensuring that the position of the auxiliary rod will not shift during installation and disassembly, and the combination operation of each component is simpler.

[0017] 6. The present invention can further prolong the time that water flows through the main pipe by providing a copper ion generator and its peripheral components, and further perform concentrated sterilization operations thereon to ensure the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall half-section structure of the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the water inlet pipe of the present invention; Figure 4 It is a schematic diagram of the partial explosion structure of the disinfection assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the matching plate of the present invention; Figure 6 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A; Figure 7 It is a partial structural schematic diagram of the auxiliary component of the present invention; Figure 8 It is a schematic diagram of the partial explosion structure of the auxiliary component of the present invention.

[0019] Among them: 1. Main pipe; 11. Water inlet pipe; 12. Water outlet pipe; 13. Sealing plate; 14. Sealing pipe; 15. Connecting pipe; 2. Disinfection component; 21. Mounting groove; 22. Mounting plate; 221. Connecting groove; 23. Diffuser; 24. Cover block; 25. Germicidal lamp group; 3. Matching component; 31. Matching plate; 32. Slot; 33. Mounting hole; 34. Copper ion generator; 4. Auxiliary component; 41. Auxiliary rod; 411. Stirring block; 42. Matching groove; 43. Locking block; 44. Mounting block; 45. Fixed rod; 46. Movable cavity; 47. Movable rod; 48. Support cylinder; 49. Cleaning rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0021] Example: Figure 1 As shown, an ultraviolet disinfector for aquaculture comprises a main body tube 1, which is a hollow round tube, and an inlet pipe 11 and an outlet pipe 12 are arranged in a staggered mirror image on the side of the main body tube 1, and the inlet pipe 11 and the outlet pipe 12 penetrate to the inner position of the main body tube 1, and the inlet pipe 11 and the outlet pipe 12 are round tubes, and a sealing plate 13 is threadedly sleeved on the side of the main body tube 1, and the sealing plate 13 is a round sealing plate made of transparent material, which can be convenient for observing the operation of the internal structure of the main body tube 1, and a sealing tube 14 is threadedly sleeved on the other side of the main body tube 1, and the sealing tube 14 is a round tube with an I-shaped cross section, and a connecting pipe 15 is threadedly installed on the other side of the sealing tube 14, and the connecting pipe 15 is a round tube, and a disinfection component 2 is arranged at the center of the sealing tube 14, and a matching component 3 is correspondingly arranged on the side of the sealing tube 14, and an auxiliary component 4 is arranged inside the main body tube 1; The provided disinfection assembly 2 can be used to perform centralized disinfection operations and improve the efficiency of disinfection; like Figures 2 to 6As shown, the disinfection component 2 includes a mounting groove 21 symmetrically penetrated and opened on the side of the main tube 1, the mounting groove 21 is a rectangular groove, and a mounting plate 22 is movably installed in the inner part of the mounting groove 21 in a mirror-like manner, the mounting plate 22 is a trapezoidal plate and the side of the mounting plate 22 is covered with an elastic rubber layer, and a connecting groove 221 penetrating it is opened on the side of the mounting plate 22 away from the water inlet pipe 11, and the connecting groove 221 is a rectangular groove, a diffuser tube 23 is fixedly installed between the mounting plates 22, and one side of the diffuser tube 23 penetrates the sealing tube 14 and the other side extends to the inside of the sealing plate 13, the diffuser tube 23 is a hollow circular tube made of transparent material, and a cover sealing block 24 is threadedly installed on the inner side of the cover sealing block 24 away from the sealing plate 13, and the cover sealing block 24 is a hollow hexagonal block. The inner thread is provided with a germicidal lamp group 25, and the germicidal lamp group 25 is movably arranged in the inner position of the diffuser tube 23. The germicidal lamp group 25 is a double-jointed cylinder of ultraviolet germicidal lamp and copper ion with a section of thread. The dual sterilization effect of ultraviolet germicidal lamp and copper ion is better. Specifically, the diffuser tube 23 can be supported by installing the mounting plate 22 in the mounting groove 21, and the interior of the main tube 1 can be divided into two areas, so that the water flow entering the water inlet pipe 11 can flow from the first area to the second area through the provided connecting groove 221, and finally flow out from the water outlet pipe 12, thereby prolonging the residence time of the water flow in the main tube 1. In addition, the germicidal lamp group 25 can be quickly installed and disassembled through the cover block 24, which is convenient for subsequent maintenance. The matching component 3 can cooperate with the disinfection component 2 to perform further disinfection operations; like Figures 2 to 5 As shown, the matching component 3 includes a matching plate 31 fixedly mounted on the bottom of the inner side of the main pipe 1, and the matching plate 31 covers the water outlet pipe 12. The matching plate 31 is an arc-shaped plate with a hollow lower side. A groove 32 is provided on the side of the matching plate 31 away from the water outlet pipe 12, and the groove 32 is a rectangular groove. A mounting hole 33 is provided on the side of the sealing pipe 14 corresponding to the matching plate 31, and the mounting hole 33 is a circular threaded hole. A copper ion generator 34 is installed on the internal thread of the mounting hole 33, and the copper ion generator The copper ion generator 34 penetrates the matching plate 31 to its internal position. The copper ion generator 34 is cylindrical. It is a prior art and will not be described in detail in this technical solution. Specifically, the copper ion generator 34 can be detachably installed inside the mounting hole 33 to avoid interference with the installation of the sealing tube 14. After the water flow in the two areas inside the main tube 1 is disinfected by the sterilization lamp group 25, it enters the matching plate 31 through the slot 32. At this time, the copper ion generator 34 set up further sterilizes the bacteria inside the water flow, ensuring the sterilization effect. The auxiliary component 4 can stir the water flow and clean other parts, and it is also convenient to install and disassemble later. like Figure 2 , Figure 3 and Figures 5 to 8As shown, the auxiliary component 4 includes auxiliary rods 41 symmetrically arranged on both sides of the diffuser tube 23 inside the main tube 1, and one end of the auxiliary rod 41 is movably arranged inside the sealing plate 13 and the other end is fitted to the side position of the sealing tube 14. The auxiliary rod 41 is a circular rod, and a stirring block 411 is fixedly sleeved equidistantly in the staggered direction of the sides of the two groups of auxiliary rods 41. The auxiliary rod 41 of the auxiliary component 4 is a fan blade ring block, and a matching groove 42 penetrating therethrough is symmetrically opened on the side of the sealing tube 14 corresponding to the position of the auxiliary rod 41. The matching groove 42 is a circular groove, and a locking block 43 is movably installed inside the matching groove 42 and the locking block 43 penetrates to the internal position of the auxiliary rod 41. The auxiliary rod 41 is provided with a threaded inner portion corresponding to the locking block 43. The auxiliary rod 41 is supported by the locking block 43 and the auxiliary rod 41 can rotate later. A mounting block 44 is fixedly sleeved equidistantly on the side of the auxiliary rod 41. The mounting block 44 is a circular ring block. A fixing rod 45 is fixedly mounted on the side of the mounting block 44 in a mirror-image manner. The fixing rod 45 is a circular rod. An active cavity 46 is provided on the side of the fixing rod 45 away from the mounting block 44. The active cavity 46 is a cylindrical cavity with a convex cross-section. An active rod 47 is movably installed inside the active cavity 46 and extends out of the active cavity 46. The active rod 47 is a cylindrical rod with a "T"-shaped cross-section. A support cylinder 48 is fixedly connected between the movable rod 47 and the inner wall of the movable cavity 46 and is movably arranged inside the movable cavity 46. The support cylinder 48 is a spring steel cylinder with a continuous "W"-shaped cross-section. A cleaning rod 49 is fixedly installed on the side of the movable rod 47 away from the mounting block 44 and the cleaning rod 49 is fitted to the inner side of the main tube 1. The cleaning rod 49 is a rectangular rod with bristles on the side. Specifically, when water flows inside the main tube 1, the stirring block 411 is driven by the water flow to drive the auxiliary rod 41 to rotate synchronously, and the stability of the rotation of the auxiliary rod 41 can be guaranteed under the support of the set locking block 43 and the sealing plate 13, and the cleaning rod 49 is always guaranteed to fit the main tube when the auxiliary rod 41 rotates. 1, when the cleaning rod 49 is squeezed, the movable rod 47 slides inside the movable cavity 46 to squeeze the supporting tube 48 to deform, so that the cleaning rod 49 can clean the inside of the main tube 1, the outside of the diffuser tube 23 and the outside of the matching plate 31, and the cleaning rod 49 can stir the water flow to ensure that the water flow can fully approach the side of the diffuser tube 23 for disinfection; in addition, when the auxiliary rod 41 is installed and disassembled, the cleaning rod 49 is attached to the inside of the main tube 1 to support the auxiliary rod 41, and then the locking block 43 is removed by threading to disassemble the connecting tube 15, the sealing tube 14 and the sealing plate 13 in turn to complete the maintenance of each component, and vice versa, each component can be installed and operated, which is convenient to use.

[0022] Working principle: Before use: First, install the sealing plate 13 on the side of the main tube 1 with threads, then insert the mounting plate 22 into the mounting groove 21 to fix the diffuser tube 23, insert the auxiliary rod 41 into the side of the sealing plate 13, and use the cleaning rod 49 to elastically fit the inner side of the main tube 1 to stabilize the auxiliary rod 41, and complete the installation of most parts of the auxiliary assembly 4; In the second step, the sealing tube 14 is threadedly installed at the other side of the main tube 1, and the diffuser tube 23 is inserted into the center of the sealing tube 14, and then the cover block 24 is threadedly installed on the inner side of the diffuser tube 23 to squeeze and seal the diffuser tube 23 and the sealing tube 14. Finally, the locking block 43 is threadedly installed in the threaded bearing inside the auxiliary rod 41, the germicidal lamp group 25 is threadedly installed on the inner side of the cover block 24 to the diffuser tube 23, the copper ion generator 34 is threadedly installed in the mounting hole 33 to the inside of the matching plate 31, and the connecting tube 15 is threadedly installed on the inner side of the sealing tube 14. In this way, the combined installation of various components is completed, otherwise they can be disassembled accordingly later, making the later maintenance convenient; When in use: the first step is to start the disinfection operation by entering the water flow through the water inlet pipe 11, and the sterilization lamp group 25 and the copper ion generator 34 are energized for disinfection. The water flows into the first area inside the main tube 1 and is sterilized by the ultraviolet rays of the sterilization lamp group 25 inside the first side of the diffuser tube 23. The water flows from the connecting groove 221 to the second area inside the main tube 1 and is sterilized by the ultraviolet rays of the sterilization lamp group 25 inside the other side of the diffuser tube 23, so that the water flow can flow through the main tube 1 for a longer time, and the ultraviolet rays emitted from the side of the diffuser tube 23 can better contact the entire water flow; In the second step, the water flow sterilized by the germicidal lamp group 25 enters the interior of the matching plate 31 from the slot 32, and the synchronous copper ion generator 34 works and contacts with the water flow, further playing a disinfection and sterilization operation, ensuring the sterilization and disinfection effect of the water flow; In the third step, when the water flows through the inside of the main tube 1, the stirring block 411 is driven by the water flow to drive the auxiliary rod 41 to rotate, and the auxiliary rod 41 then drives the cleaning rod 49 to rotate and stir the water flow inside the main tube 1, so that each part of the water flow can circulate close to the side of the diffuser tube 23 to ensure the sterilization effect. The synchronous cleaning rod 49 can clean the sides of each component passing through, which is convenient for subsequent maintenance and cleaning, thereby achieving the effect of killing bacteria in the water flow inside the limited space.

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An ultraviolet sterilizer for aquaculture, comprising a main body tube (1), a water inlet tube (11) and a water outlet tube (12) being arranged on the side of the main body tube (1), a sealing plate (13) being threadedly sleeved on the side of the main body tube (1), a sealing tube (14) being threadedly sleeved on the other side of the main body tube (1), a connecting tube (15) being threadedly mounted on the other side of the sealing tube (14), a disinfection component (2) being arranged at the center of the sealing tube (14), a matching component (3) being arranged on the side of the sealing tube (14), and an auxiliary component (4) being arranged inside the main body tube (1); Features: The disinfection assembly (2) comprises a mounting plate (22), a diffuser tube (23) is arranged between the mounting plates (22), the mounting plates (22) and the diffuser tube (23) separate the internal area of ​​the main tube (1), and a sterilization lamp group (25) is arranged inside the diffuser tube (23); The matching component (3) includes a matching plate (31), wherein a copper ion generator (34) is arranged inside the matching plate (31); The auxiliary component (4) comprises an auxiliary rod (41), a stirring block (411) and a mounting block (44) are arranged on the side of the auxiliary rod (41), a movable rod (47) is arranged on the side of the mounting block (44), a cleaning rod (49) is arranged on the side of the movable rod (47), and the cleaning rod (49) can be elastically supported by the movable rod (47).

2. The ultraviolet sterilizer for aquaculture according to claim 1, characterized in that: The disinfection assembly (2) comprises a mounting groove (21) provided on a side of the main tube (1), a mounting plate (22) movably mounted inside the mounting groove (21), a connecting groove (221) provided on a side of the mounting plate (22) away from the water inlet pipe (11), a diffuser tube (23) fixedly mounted between the mounting plates (22), a cover sealing block (24) threadedly mounted on an inner side of the cover sealing block (24) away from the sealing plate (13), and a sterilizing lamp assembly (25) threadedly mounted on the inner side of the cover sealing block (24).

3. The ultraviolet sterilizer for aquaculture according to claim 2, characterized in that: The mounting plate (22) is a ladder-shaped plate and the side surface of the mounting plate (22) is covered with an elastic rubber layer. One side of the light-scattering tube (23) penetrates through the sealing tube (14) and the other side extends to the inside of the sealing plate (13). The germicidal lamp group (25) is movably arranged inside the light-scattering tube (23).

4. The ultraviolet sterilizer for aquaculture according to claim 3, characterized in that: The matching component (3) comprises a matching plate (31) fixedly mounted on the inner bottom of the main pipe (1); a groove (32) is provided on the side of the matching plate (31) away from the water outlet pipe (12); a mounting hole (33) is provided on the side of the sealing pipe (14) corresponding to the position of the matching plate (31); and a copper ion generator (34) is threadedly mounted inside the mounting hole (33).

5. The ultraviolet sterilizer for aquaculture according to claim 4, characterized in that: The matching plate (31) covers the water outlet pipe (12), and the copper ion generator (34) penetrates the matching plate (31) to an internal position thereof.

6. The ultraviolet sterilizer for aquaculture according to claim 5, characterized in that: The auxiliary component (4) comprises auxiliary rods (41) arranged inside the main tube (1), agitator blocks (411) are fixedly sleeved on the sides of two groups of auxiliary rods (41) in staggered directions and at equal intervals, a matching groove (42) is provided on the side of the sealing tube (14) at a position corresponding to the auxiliary rods (41), and a locking block (43) is movably installed inside the matching groove (42).

7. The ultraviolet sterilizer for aquaculture according to claim 6, characterized in that: The auxiliary component (4) further comprises a mounting block (44) fixedly sleeved on a side of the auxiliary rod (41); a fixing rod (45) is fixedly mounted on the side of the mounting block (44); a movable cavity (46) is provided on a side of the fixing rod (45) away from the mounting block (44); a movable rod (47) is movably mounted inside the movable cavity (46); a supporting cylinder (48) is fixedly connected between the side of the movable rod (47) and the inner wall of the movable cavity (46); and a cleaning rod (49) is fixedly mounted on the side of the movable rod (47).

8. The ultraviolet sterilizer for aquaculture according to claim 7, characterized in that: One end of the auxiliary rod (41) is movably arranged inside the sealing plate (13) and the other end is attached to the side of the sealing tube (14). The locking block (43) penetrates into the interior of the auxiliary rod (41). The movable rod (47) extends out of the movable cavity (46). The support tube (48) is movably arranged inside the movable cavity (46).

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