Device for culturing periphyton

Abstract

The invention relates to the technical field of periphyton incubators, and discloses a device for culturing periphyton, which comprises an incubator body, a control operation panel connected to the top of the incubator body and a culture container connected in the incubator body. Through mutual cooperation of an arc-shaped box, a chain, a chain wheel and a lamp shaft seat, the visible light simulation illumination lamp with the wavelength of 400-700 nm can move and is similar to rising of the sun from low to high and then gradually reduced, so that the illumination position is dynamically changed, a more natural growth environment is simulated, the illumination intensity and the duration time are synchronously controlled, and the illumination effect is improved. Therefore, the proper growth temperature in the incubator is maintained, the change rule of the illumination intensity and the illumination angle in one day is truly represented, artificial stable growth conditions closer to the natural environment are provided for periphyton, and efficient growth and metabolism of periphyton at the proper temperature are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of peribiotic incubators, in particular to a device for culturing peribiotics. Background Art

[0002] Periclonial biota, formed by attached communities of bacteria, fungi, algae, and small protozoa, offer unique advantages in wastewater treatment. They secrete extracellular polymeric substances (EPS) to form biofilms, effectively adsorbing and degrading organic matter (such as COD and BOD) and pollutants such as nitrogen and phosphorus in wastewater. Compared to traditional activated sludge processes, Periclonial biota systems offer strong shock load resistance, low sludge production, and reduced operating costs, making them suitable for industrial wastewater, domestic sewage, and river restoration. Periclonial biota require pre-cultivation in a biochemical incubator. Precisely controlling parameters such as temperature, pH, and dissolved oxygen allows for the selection of dominant strains and enhanced pollutant metabolism. Combined with biofilm carrier technology, the optimized bacterial communities in the incubator can rapidly colonize systems such as biofilters and floating beds, improving shock load resistance and reducing sludge production. Therefore, biochemical incubators are often used for Periclonial biota cultivation.

[0003] For example, patent publication number CN217868896U discloses a biochemical incubator, including a box body. This device mainly solves the problems of being applicable to different containers, easy to disassemble and clean, but it is not suitable for the cultivation of periphyton. For another example, patent publication number CN105624025B discloses a culture device for periphyton, including: an incubator; a periphyton attachment system provided in the incubator for periphyton attachment and growth; a lighting system provided in the incubator and above the periphyton attachment system for providing a light source and a heat source for the growth of periphyton; a water supply system for supplying water to the periphyton attachment system for providing a water flow environment for the growth of periphyton; a water quality parameter detection system provided in the incubator for detecting the water quality conditions for the growth of periphyton; a support system for supporting and adjusting the inclination of the incubator relative to the horizontal plane, for changing the river conditions of the periphyton attachment system in the incubator by adjusting the inclination of the incubator. Although this device is suitable for the cultivation of periphyton, it still has the following defects: When cultivating periphyton, in order to more accurately simulate its natural growth environment, it is usually necessary to replicate the dynamic changes in light position similar to those in nature. However, the lighting system currently used can only provide a light source in a fixed position, and cannot achieve the dynamic change process of the light position moving from a low angle to a gradually lowered position in space, making it difficult to restore the changes in light angle and incident direction caused by the movement of the sun throughout the day. This limitation weakens the ability to simulate the dynamic changes in the wavelength distribution and irradiation angle of natural visible light, making it difficult to effectively reproduce the photosynthetic rhythm and physiological response of periphyton under natural lighting conditions, which may affect its photosynthetic efficiency, growth status and circadian rhythm regulation, thereby affecting its population structure composition and functional remodeling in water treatment. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a device for culturing periphyton to solve the problems raised in the background art, so that the incubator can facilitate dynamic illumination simulation of periphyton.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A device for culturing periphyton, comprising an incubator body, a control operation panel connected to the top of the incubator body, and a culture container connected to the incubator body, an arc-shaped box being installed on the inner wall of the incubator body, an illumination lamp being connected to the outer wall of the arc-shaped box, the illumination lamp being located above the culture container, a lamp shaft seat being fixedly connected to the end of the illumination lamp, an arc-shaped cover being fixedly installed on the outer side of the arc-shaped box, an arc-shaped groove being provided on the top of the arc-shaped cover and the arc-shaped box, a chain and two sprockets being connected between the arc-shaped cover and the arc-shaped box, the two sprockets being located at the two end arcs of the arc-shaped box, the chain being sleeved on the outer sides of the two sprockets, and the lamp shaft seat being fixedly connected to the chain plate of the chain through the arc-shaped groove.

[0006] Furthermore, the axis of the two sprockets is fixedly connected to a fixed shaft, and the fixed shaft passes through the arc box and is rotatably connected thereto, wherein the outer side of one of the fixed shafts is fixedly connected to a transmission shaft, and the outer wall of the incubator body is fixedly mounted with a motor fixedly connected to the transmission shaft.

[0007] Furthermore, the illumination lamp is a long lamp tube, and the wavelength of the light wave irradiated by it is 400-700nm.

[0008] Furthermore, the top surface of the arc cover is fixedly connected to the top plate, the inner side wall of the arc box is fixedly connected to the inner plate, the top surfaces of the inner plate and the top plate are fixedly connected to a plurality of vertical plates, and the top plate and the inner plate are both arranged in two sections, and the plurality of vertical plate inner walls on the top surface of the front half of the top plate and the plurality of vertical plate inner walls on the top surface of the rear half of the inner plate are fixedly connected with teeth, and the teeth on the plurality of vertical plates on the top surface of the front half of the top plate and the teeth on the plurality of vertical plates on the top surface of the rear half of the inner plate are symmetrical and staggered, and a knob for adjusting the brightness of the illumination lamp is fixedly installed on the outer side of the lamp shaft seat, and a gear connected to the knob is sleeved on the outer side of the lamp shaft seat, and the gear is meshed with the teeth on the inner walls of the plurality of vertical plates, and the bottom of the arcs at both ends of the arc box are respectively fixedly connected with a first switch and a second switch that can be opened and closed by the lamp shaft seat.

[0009] Furthermore, a fixing box is fixedly installed on the outer wall of the incubator body, a heating block is fixedly installed on the inner wall of the fixing box, the outer wall of the fixing box is connected to the air blower through a pipe, a hot air channel is opened in the incubator body, and the air blower is connected to the interior of the incubator body through the pipe, the fixing box, the heating block, and the hot air channel.

[0010] Furthermore, an annular seat is fixedly installed on the outer side of the lamp shaft seat, and the annular seat is located on the inner side of the gear. The multiple vertical plates on the top of the top plate and the inner walls of the multiple vertical plates on the top of the inner plate are fixedly connected with fixed contacts, and the two opposite fixed contacts are electrically connected through cables. A follower contact for connecting the two fixed contacts is fixedly installed in the annular seat, and the two sides of the outer wall of the follower contact correspond to the two opposite fixed contacts respectively.

[0011] Furthermore, the outer walls of the fixed contacts are all installed with protective shells, and the protective shells are located on the outer walls of the fixed contacts. Two symmetrically arranged sliding grooves are opened on the multiple vertical plates, and the outer walls of the protective shells are slidably connected to the sliding grooves through sliders. The bottom surface of the protective shell is fixedly connected with a spring, and the other end of the spring is fixedly installed on the top plate or the top surface of the inner plate.

[0012] Furthermore, the cross sections of the slider and the slide groove are rectangular.

[0013] Furthermore, an inclined plate is fixedly connected to one side of the outer wall of the protective shell, and a fixing ring is provided on the outer wall fixing sleeve of the annular seat, and the bottom surface of the fixing ring is slidably connected to the inclined edge of the inclined plate.

[0014] Furthermore, a plurality of fixing ears are fixedly mounted on the outer wall of the arc-shaped box, and the plurality of fixing ears are fixedly mounted to the inner wall of the incubator body via bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the interaction of an arc-shaped box, chain, sprocket, and lamp shaft seat, enables the movable illumination lamp with a wavelength of 400-700 nm, similar to the sun rising from low to high and then gradually lowering, so that the illumination position changes dynamically, simulating a more natural growth environment and facilitating the research of regulating photoreceptors and optical signal elements of peripheral organisms through light simulation. 2. The present invention provides a knob and a gear on the outside of the lamp shaft seat, and utilizes the mutual cooperation between the teeth on the vertical plate of the front half of the top plate and the teeth and gears on the vertical plate of the rear half of the inner plate. While the lamp shaft seat moves along an arc path to realize dynamic changes in the lighting position, the light intensity and duration are synchronously controlled to maintain a suitable growth temperature in the incubator, simulate the dynamic change process of light from rising to setting in the position of the sun in nature, and truly reproduce the change pattern of light intensity and illumination angle within a day, so as to provide artificial stable growth conditions for periphyton that are closer to the natural environment, and promote their efficient growth and metabolism at a suitable temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention as a whole; Figure 3 Schematic diagram of the three-dimensional structure of the arc box, lighting lamp and culture container of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the arc box, chain and arc shell in the unfolded state of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the arc box, top plate, arc groove and lamp shaft seat of the present invention; Figure 6 Schematic diagram of the three-dimensional cross-sectional structure of the arc-shaped shell, chain and arc-shaped box of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the motor, transmission shaft and sprocket of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the inner plate, top plate and side plate of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the lamp shaft seat, annular seat, gears, and multiple vertical plates of the present invention; Figure 10 It is a schematic diagram of the three-dimensional structure of the local state of the illumination lamp, inner plate and top plate of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the follower contact and the fixed ring of the present invention; Figure 12 It is a schematic diagram of the three-dimensional cross-sectional structure of the annular seat of the present invention.

[0017] In the figure: 1. Incubator body; 2. Control operation panel; 3. Incubation container; 4. Light; 5. Arc box; 6. Fixed box; 7. Heating block; 8. Hot air channel; 9. Fixed shaft; 10. Transmission shaft; 11. Arc slot; 12. Motor; 13. First switch; 14. Second switch; 15. Sprocket; 16. Fixed ear; 17. Chain; 18. Arc cover; 19. Ring seat; 20. Lamp shaft seat; 21. Knob; 22. Gear; 23. Inner plate; 24. Vertical plate; 25. Top plate; 26. Follow-up contact; 27. Teeth; 28. Fixed contact; 29. Protective shell; 30. Inclined plate; 31. Spring; 32. Slide groove; 33. Fixed ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figures 1-12 A device for culturing periphyton organisms includes an incubator body 1, a control operation panel 2 connected to the top of the incubator body 1, and a culture container 3 connected to the incubator body 1. An arc box 5 is installed on the inner wall of the incubator body 1. The outer wall of the arc box 5 is connected to a light lamp 4. The light lamp 4 is located above the culture container 3. The end of the light lamp 4 is fixedly connected to a lamp shaft seat 20. An arc cover 18 is fixedly installed on the outer side of the arc box 5. The arc cover 18 and the top of the arc box 5 are provided with an arc groove 11. The arc cover 18 and A chain 17 and two sprockets 15 are connected between the arc boxes 5. The two sprockets 15 are located at the arcs at both ends of the arc box 5. The chain 17 is sleeved on the outside of the two sprockets 15. The lamp shaft seat 20 passes through the arc groove 11 and is fixedly connected to the chain plate of the chain 17. The axis of the two sprockets 15 is fixedly connected to the fixed shaft 9. The fixed shaft 9 passes through the arc box 5 and is rotatably connected to it. A transmission shaft 10 is fixedly connected to the outside of one of the fixed shafts 9, and a motor 12 fixedly connected to the transmission shaft 10 is fixedly installed on the outer wall of the incubator body 1.

[0020] The device for cultivating pericytes in the present invention, when the pericytes are being cultivated, in order to better simulate the growth environment of the pericytes in natural form, after the pericytes are inoculated in the culture container 3, the motor 12 can be started, and the output shaft of the motor 12 drives the transmission shaft 10 to rotate, drives the fixed shaft 9 to rotate, drives the sprocket 15 to rotate, and the two sprockets 15 are engaged with the chain 17 to realize the rotation of the chain 17. When the chain 17 rotates, it moves in the arc state of the arc box 5, drives the lamp shaft seat 20 on the outer side of the chain plate of the chain 17 to move in the arc groove 11, and the lamp shaft seat 20 drives the illumination lamp 4 to move. When the lamp shaft seat 20 moves from one end of the arc on the left side of the arc box 5 to the right side (such as Figure 3As shown), a day of illumination is simulated. Here, the movement speed is controlled by the rotation speed of the motor 12, which is controlled by the control panel 2. After completing the illumination position change for a day, the illumination lamp 4 is located at the right arc of the arc box 5 and continues to move. At this time, the night state is simulated. The illumination lamp 4 is turned off and follows the movement of the chain 17 from the right side, rotating from the other side of the arc slot 11 to the left arc of the arc box 5. At this time, the illumination simulation for the second day is performed again, and the cycle repeats. As a preferred technical solution of the present invention, the illumination lamp 4 is provided as an elongated lamp tube.

[0021] Specifically, since the illumination lamp 4 is a long lamp tube, the light source covers the upper position of the culture container 3. When the illumination lamp 4 moves from the left arc to the right arc of the arc box 5 along the arc path, it is like the sun rising and gradually decreasing from low to high, so that the illumination position changes dynamically, simulating a more natural growth environment, which is convenient for more thorough research on the periphyton organisms during cultivation. The wavelength of the illumination lamp 4 is 400-700nm, which can effectively improve the rate of periphyton biofilm formation.

[0022] As a preferred technical solution of the present invention, the top surface of the arc cover 18 is fixedly connected to the top plate 25, the inner side wall of the arc box 5 is fixedly connected to the inner plate 23, the top surfaces of the inner plate 23 and the top plate 25 are fixedly connected to multiple vertical plates 24, the top plate 25 and the inner plate 23 are respectively arranged in two sections, the inner walls of the multiple vertical plates 24 on the top surface of the front half of the top plate 25 and the inner walls of the multiple vertical plates 24 on the top surface of the rear half of the inner plate 23 are fixedly connected with teeth 27, and the upper surfaces of the multiple vertical plates 24 on the top surface of the front half of the top plate 25 are fixedly connected to the inner plate 23. The teeth 27 and the teeth 27 on the multiple vertical plates 24 on the top surface of the rear half of the inner plate 23 are symmetrical and staggered. A knob 21 for adjusting the brightness of the lighting lamp 4 is fixedly installed on the outer side of the lamp shaft seat 20. A gear 22 connected to the knob 21 is sleeved on the outer side of the lamp shaft seat 20. The gear 22 is meshed with the teeth 27 on the inner walls of the multiple vertical plates 24. The bottom of the arc at both ends of the arc box 5 is respectively fixed with a first switch 13 and a second switch 14 that can be opened and closed by the lamp shaft seat 20.

[0023] Specifically, when the lamp shaft seat 20 moves following the chain plate of the chain 17, the knob 21 on the outside of the lamp shaft seat 20 for controlling the brightness adjustment of the illumination lamp 4 moves accordingly. A gear 22 is provided on the outside of the knob 21. As the lamp shaft seat 20 moves in an arc path, the gear 22 is engaged with the teeth 27 on the multiple vertical plates 24 arranged at equal distances. According to the moving path of the illumination lamp 4, the lamp shaft seat 20 drives the gear 22 to first engage with the teeth 27 on the multiple vertical plates 24 in the front half of the top plate 25. After the gear 22 engages with the teeth 27, it drives the knob 21 to rotate a certain angle. The brightness of the illumination lamp 4 can be adjusted by turning the knob 21, thereby simulating the dynamic change of the illumination position and the change of the illumination intensity. When the lamp shaft seat 20 gradually moves, the illumination intensity is gradually increased by adjusting the knob 21. Because the teeth 27 on the multiple vertical plates 24 at the top of the inner plate 23 and the teeth 27 on the multiple vertical plates 24 on the top surface of the front half of the top plate 25 are symmetrical and staggered, when the gear 22 engages with the teeth 27 on the multiple vertical plates 24 at the top of the inner plate 23, the gear 22 rotates in the opposite direction, driving the knob 21 to adjust the light intensity of the light lamp 4 to gradually decrease. By setting a knob 21 and a gear 22 on the outside of the lamp shaft seat 20, and utilizing the mutual cooperation between the teeth 27 on the vertical plate 24 of the front half of the top plate 25 and the teeth 27 on the vertical plate 24 of the rear half of the inner plate 23 and the gear 22, while the lamp shaft seat 20 moves along the arc path to achieve dynamic changes in the lighting position, the light intensity can also be adjusted synchronously, so that it is adjusted accordingly with the changes in the lighting position. This can not only simulate the dynamic process of the sun's position from low to high and then gradually decreasing in nature, but also truly reproduce the changing pattern of light intensity from weak to strong and then weak again within a day, thereby providing growth conditions for the periphyton that are closer to the natural environment. At the same time, by synchronously controlling the light intensity and duration, it can also maintain a suitable growth temperature in the incubator body 1, providing sufficient protection for the healthy growth of the periphyton.

[0024] As a preferred technical solution of the present invention, a fixing box 6 is fixedly installed on the outer wall of the incubator body 1, a heating block 7 is fixedly installed on the inner wall of the fixing box 6, the outer wall of the fixing box 6 is connected to the air blower through a pipe, a hot air channel 8 is opened in the incubator body 1, and the air blower is connected to the interior of the incubator body 1 through the pipe, the fixing box 6, the heating block 7, and the hot air channel 8.

[0025] Specifically, when the incubator body 1 is culturing the surrounding organisms, in order to control the internal temperature as needed, a blower can be used to supply air through the pipe, and the control panel 2 is used to control the heating block 7 to achieve temperature control in the box.

[0026] As a preferred technical solution of the present invention, an annular seat 19 is also fixedly installed on the outer side of the lamp shaft seat 20. The annular seat 19 is located on the inner side of the gear 22. The multiple vertical plates 24 on the top of the top plate 25 and the inner walls of the multiple vertical plates 24 on the top of the inner plate 23 are fixedly connected with fixed contacts 28. The two opposite fixed contacts 28 are electrically connected through cables. A follower contact 26 for connecting the two fixed contacts 28 is fixedly installed in the annular seat 19, and the two sides of the outer wall of the follower contact 26 correspond to the two opposite fixed contacts 28 respectively.

[0027] Specifically, when the lamp shaft seat 20 moves in an arc path, the lamp shaft seat 20 drives the annular seat 19 to move accordingly. During the movement of the annular seat 19, the follower contact 26 inside it moves accordingly. When the lamp shaft seat 20 moves to the position of the vertical plate 24, it drives the follower contact 26 to connect with the fixed contacts 28 on the top plate 25 and the inner wall of the inner plate 23. When the two ends of the follower contact 26 are respectively connected with the fixed contacts 28, a pathway is formed, which allows the controller in the control operation panel 2 to receive a signal and adjust the temperature, so that the light lamps 4 at different positions correspond to different temperatures, which more comprehensively simulates the natural environment. The temperature control here can be set according to the specific control operation panel 2, and is not specifically limited here.

[0028] As a preferred technical solution of the present invention, the outer walls of the fixed contacts 28 are all installed with protective shells 29, and the protective shells 29 are located on the outer walls of the fixed contacts 28. Two symmetrically arranged slide grooves 32 are opened on the multiple vertical plates 24. The outer wall of the protective shell 29 is slidably connected to the slide grooves 32 through a slider, and the bottom surface of the protective shell 29 is fixedly connected to a spring 31, and the other end of the spring 31 is fixedly installed on the top plate 25 or the top surface of the inner plate 23.

[0029] Specifically, when the fixed contact 28 is not in use, it can be protected by the protective shell 29. The two ends of the protective shell 29 slide through the slider and the slide groove 32 on the vertical plate 24. When the fixed contact 28 is needed, the protective shell 29 can be slid open, and when the protective shell 29 moves down, it will squeeze the spring 31. When the protective shell 29 needs to be closed, the elastic potential energy of the spring 31 can automatically lift the protective shell 29 to fix the fixed contact 28.

[0030] As a preferred technical solution of the present invention, the cross-section of the slider and the chute 32 is rectangular. Specifically, the cross-section of the chute 32 and the slider is rectangular, which can facilitate the slider to drive the protective shell 29 vertically up and down, making the movement more stable.

[0031] As a preferred technical solution of the present invention, a slanted plate 30 is fixedly connected to one side of the outer wall of the protective shell 29, and a fixed ring 33 is fixedly provided on the outer wall of the annular seat 19. The bottom surface of the fixed ring 33 is slidably connected to the hypotenuse of the slanted plate 30.

[0032] Specifically, when the lamp shaft seat 20 moves, the annular seat 19 is driven to move accordingly. During the movement of the annular seat 19, the bottom surface of the fixed ring 33 on its outside will be against the oblique side of the inclined plate 30, and as the annular seat 19 moves, the oblique side of the inclined plate 30 is squeezed. The inclined plate 30 drives the protective shell 29 to descend on the outside of the vertical plate 24, exposing the fixed contact 28, thereby facilitating the connection between the follower contact 26 and the fixed contact 28.

[0033] As a preferred technical solution of the present invention, a plurality of fixing ears 16 are fixedly installed on the outer wall of the arc-shaped box 5 , and the plurality of fixing ears 16 are fixed to the inner wall of the incubator body 1 by bolts.

[0034] Specifically, the fixing ears 16 and the bolts can facilitate fixing the arc-shaped box 5 in the incubator body 1 .

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for culturing periphyton, comprising an incubator body (1), a control operation panel (2) connected to the top of the incubator body (1), and a culture container (3) connected to the incubator body (1), characterized in that: An arc box (5) is installed on the inner wall of the incubator body (1), and an illumination lamp (4) is connected to the outer wall of the arc box (5). The illumination lamp (4) is located above the incubation container (3), and the end of the illumination lamp (4) is fixedly connected to a lamp shaft seat (20). An arc cover (18) is fixedly installed on the outer side of the arc box (5), and an arc groove (11) is provided on the top of the arc cover (18) and the arc box (5). A chain (17) and two sprockets (15) are connected between the arc cover (18) and the arc box (5), and the two sprockets (15) are located at the two end arcs of the arc box (5). The chain (17) is sleeved on the outer sides of the two sprockets (15), and the lamp shaft seat (20) passes through the arc groove (11) and is fixedly connected to the chain plate of the chain (17).

2. The device for culturing periphyton according to claim 1, characterized in that: The axes of the two sprockets (15) are fixedly connected to a fixed shaft (9), and the fixed shaft (9) passes through the arc box (5) and is rotatably connected thereto. The outer side of one of the fixed shafts (9) is fixedly connected to a transmission shaft (10), and a motor (12) fixedly connected to the transmission shaft (10) is fixedly mounted on the outer wall of the incubator body (1).

3. The device for culturing periphyton according to claim 1, characterized in that: The illumination lamp (4) is provided as an elongated lamp tube.

4. The device for culturing periphyton according to claim 1, characterized in that: The top surface of the arc-shaped cover (18) is fixedly connected to a top plate (25), the inner side wall of the arc-shaped box (5) is fixedly connected to an inner plate (23), the top surfaces of the inner plate (23) and the top plate (25) are fixedly connected to a plurality of vertical plates (24), the top plate (25) and the inner plate (23) are both arranged in two sections, the inner walls of the plurality of vertical plates (24) on the top surface of the front half of the top plate (25) and the inner walls of the plurality of vertical plates (24) on the top surface of the rear half of the inner plate (23) are fixedly connected to teeth (27), the teeth (27) on the plurality of vertical plates (24) on the top surface of the front half of the top plate (25) are fixedly connected to the inner wall of the plurality of vertical plates (24) on the top surface of the rear half of the inner plate (23) The teeth (27) on the plurality of vertical plates (24) on the top surface of the rear half of the inner plate (23) are symmetrical and staggered. A knob (21) for adjusting the brightness of the illumination lamp (4) is fixedly mounted on the outer side of the lamp shaft seat (20). A gear (22) connected to the knob (21) is sleeved on the outer side of the lamp shaft seat (20). The gear (22) is meshed and connected with the teeth (27) on the inner walls of the plurality of vertical plates (24). A first switch (13) and a second switch (14) that can be opened and closed by the lamp shaft seat (20) are fixedly connected to the bottom of the arc at both ends of the arc box (5).

5. The device for culturing periphyton according to claim 1, characterized in that: A fixing box (6) is fixedly mounted on the outer wall of the incubator body (1), a heating block (7) is fixedly mounted on the inner wall of the fixing box (6), the outer wall of the fixing box (6) is connected to a blower via a pipe, a hot air channel (8) is provided in the incubator body (1), and the blower is connected to the interior of the incubator body (1) via the pipe, the fixing box (6), the heating block (7), and the hot air channel (8).

6. The device for culturing periphyton according to claim 4, characterized in that: An annular seat (19) is also fixedly installed on the outer side of the lamp shaft seat (20), and the annular seat (19) is located on the inner side of the gear (22). The inner walls of the multiple vertical plates (24) on the top of the top plate (25) and the multiple vertical plates (24) on the top of the inner plate (23) are fixedly connected with fixed contacts (28), and the fixed contacts (28) facing each other are electrically connected through cables. A follower contact (26) for connecting the two fixed contacts (28) is fixedly installed in the annular seat (19), and the outer walls of the follower contact (26) correspond to the two opposite fixed contacts (28) respectively.

7. The device for culturing periphyton according to claim 6, characterized in that: The outer wall of the fixed contact (28) is installed with a protective shell (29), and the protective shell (29) is located on the outer wall of the fixed contact (28). Two symmetrically arranged sliding grooves (32) are opened on the plurality of vertical plates (24). The outer wall of the protective shell (29) is slidably connected to the sliding groove (32) through a slider. The bottom surface of the protective shell (29) is fixedly connected with a spring (31), and the other end of the spring (31) is fixedly installed with the top surface of the top plate (25) or the top surface of the inner plate (23).

8. The device for culturing periphyton according to claim 7, characterized in that: The cross sections of the slider and the slide groove (32) are rectangular.

9. The device for culturing periphyton according to claim 7, characterized in that: An inclined plate (30) is fixedly connected to one side of the outer wall of the protective shell (29), and a fixed ring (33) is provided on the outer wall fixed sleeve of the annular seat (19). The bottom surface of the fixed ring (33) is slidably connected to the oblique side of the inclined plate (30).

10. The device for culturing periphyton according to claim 1, characterized in that: A plurality of fixing ears (16) are fixedly mounted on the outer wall of the arc-shaped box (5), and the fixing ears (16) are fixedly mounted to the inner wall of the incubator body (1) via bolts.

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