A diatom culture device and method

Abstract

The present invention relates to the technical field of diatom cultivation, and discloses a diatom cultivation device and method. Among them, a diatom cultivation device includes a support base. Above the support base, there is a water tank. A water inlet pipe is fixedly penetrated through the top of the water tank. A drainage pipe fitting is fixedly connected to the bottom of the water tank. A partition board is fixedly connected between the bottom of the water inlet pipe and the inner wall of the water tank. A valve plate component is rotatably connected to the lower part of the partition board. Yaw components are arranged on the opposite side walls of the support base. When the water tank rotates, the yaw components drive the valve plate component to rotate and open. When the water tank is tilted, the valve plate component opens, and the culture solution flows freely. When the water tank tends to be horizontal, the valve plate component closes. Using the gravitational potential energy, a liquid level difference is formed on both sides of the partition board. The high-level culture solution flows into the circulating water pipe through the drainage pipe fitting and then flows back to the water tank. This contactless circulation method completely avoids the damage of the traditional water pump impeller mechanical shear force to the diatom silica shell structure, significantly reduces the diatom mortality rate, and can effectively improve the diatom yield.

Description

Technical Field

[0001] The present invention relates to the technical field of diatom culture, and in particular to a diatom culture device and method. Background Art

[0002] Diatoms are one of the important sources of the earth's oxygen, and are also the basic producers of the aquatic food chain, and play a key role in fields such as the carbon cycle, water purification, and industrial applications. Therefore, diatom culture has a large market prospect. The tubular photobioreactor is an efficient and controllable closed culture system, which is particularly suitable for the high-density and large-scale culture of photosynthetic microorganisms such as diatoms. Its core design is to form a circulation system through a transparent pipeline to maximize the utilization of light energy and maintain stable culture conditions.

[0003] The tubular photobioreactor mainly drives the culture solution to circulate in the circulation pipeline by a water pump, so that the diatoms can fully receive light and carbon dioxide to achieve rapid growth. However, the mechanical shear force generated by the rotation of the water pump impeller will continuously cut the diatoms, resulting in damage to the silica shell structure of the diatoms. Moreover, the culture period of diatoms is usually not less than one week. Therefore, during the culture period of diatoms, the operation of the water pump will greatly reduce the number of cultured diatoms. At the same time, the dead diatoms will make the culture solution turbid, which will reduce the fluidity of the culture solution and the absorption of light by the diatoms, resulting in a further reduction in the diatom culture effect. Summary of the Invention

[0004] In view of the problem in the prior art that the mechanical shear force generated by the rotation of the water pump impeller damages the diatom structure, a diatom culture device is proposed.

[0005] Its purpose is to set the water tank separating two areas to rotate back and forth. The liquid levels of the culture solution in the two areas are different. The culture solution in the high liquid level area flows into the circulation pipeline through the gravitational potential energy to achieve non-mechanical contact circulation.

[0006] The technical solution of the present invention is a diatom culture device, which includes a support frame and a circulation water pipe installed on the support frame, and further includes a support seat. Above the support seat, there is a water tank in a superior arc structure. A water inlet pipe is fixedly penetrated through the top of the water tank. A drainage pipe fitting is fixedly connected to the bottom of the water tank. The water tank is communicated with the drainage pipe fitting. The upper port of the circulation water pipe is rotationally sleeved with the water inlet pipe. The lower port of the circulation water pipe is connected to the drainage pipe fitting. The water inlet pipe is rotationally connected to the support seat. A driving mechanism is installed on the support seat. The driving mechanism is used to drive the water tank to rotate back and forth. A partition is fixedly connected between the bottom of the water inlet pipe and the inner wall of the water tank. A valve plate member is rotationally connected to the bottom of the partition. Yaw components are arranged on both opposite side walls of the support seat. When the water tank rotates, the yaw components drive the valve plate member to rotate and open. Two groups of regulation components are symmetrically arranged at the bottom of the inner wall of the water tank;

[0007] The regulating component includes an arc-shaped plate hinged to the inner wall of the water tank. The arc-shaped plate is arranged above the drain hole and fits the inner wall of the water tank. Both ends of the arc-shaped plate in the length direction are fixedly connected with lifting plates. A guiding component connected to the valve plate component is arranged on one side of the lifting plate. The guiding component moves synchronously with the valve plate component and drives the arc-shaped plate to rotate.

[0008] With the above technical solution, the driving mechanism drives the water tank to rotate alternately forward and backward. When the water tank rotates to one side, the yaw component drives the valve plate component to rotate in the opposite direction, and a flow channel is formed between the partition plate and the valve plate component. The culture solution on both sides of the partition plate can flow through the flow channel. After the water tank rotates to the maximum angle, the valve plate component coincides with the partition plate, closing the flow channel. At the same time, the valve plate component drives the arc-shaped plate on that side to rotate through the guiding component on the side away from the rotation direction, opening the drain hole on that side. During the reset process of the water tank, the liquid levels of the culture solution on both sides of the partition plate are different, and the culture solution on the high liquid level flows through the opened drain hole into the drainage pipe fitting and then into the circulating water pipe, and then flows back into the water tank again through the upper end of the circulating water pipe, thereby realizing the flow of the culture solution without mechanical power and avoiding damage to diatoms.

[0009] Further, the drainage pipe fitting includes a tee pipe fixedly penetrating through the support seat. The bottom end of the tee pipe is fixedly connected to the lower port of the circulating water pipe. An arc-shaped pipe is slidably sleeved inside the top of the tee pipe. A plurality of through holes are formed in the middle of the arc-shaped pipe. Buffer boxes are fixedly connected to both ends of the arc-shaped pipe. The buffer boxes are fixedly connected to the bottom of the outer wall of the water tank.

[0010] With the above technical solution, when the water tank swings back and forth alternately, it drives the arc-shaped pipe to move synchronously. The through holes of the arc-shaped pipe are always located inside the tee pipe, so that the culture solution on the high liquid level side enters the buffer box on that side and then flows to the arc-shaped pipe, and flows into the tee pipe through the through holes and then flows downward.

[0011] Further, the driving mechanism includes a reduction motor fixedly installed on one side of the support seat. The output end of the reduction motor is fixedly connected with a transmission gear. An outer arc rack is meshed and connected above the transmission gear. The outer arc rack is fixedly connected to the bottom of the water tank.

[0012] With the above technical solution, the reduction motor rotates clockwise for several turns and then changes the direction to rotate counterclockwise for the same number of turns. The output shaft of the reduction motor drives the transmission gear to rotate synchronously. The transmission gear and the outer arc rack cooperate to make the water tank first rotate counterclockwise by a certain angle and then rotate clockwise in the opposite direction by the same angle.

[0013] Further, the partition board has a concave structure, and the valve plate member is arranged at the concave structure of the partition board. The valve plate member includes two adjusting plates, and the adjusting plates are in abutting cooperation with the partition board and the water tank. A rubber strip is fixedly connected between the two adjusting plates, and a rotating shaft is fixedly connected to the upper end of the adjusting plate. The rotating shaft movably penetrates through the partition board and the water tank and extends to the outside of the water tank.

[0014] With the above technical solution, the rotation of the rotating shaft can drive the rotation of the adjusting plate. When the adjusting plate abuts against the groove of the partition board and the bottom surface of the inner wall of the water tank, the partition board and the valve plate member cooperate to divide the interior of the water tank into two spaces of the same size. When the adjusting plate does not abut against the groove of the partition board and the bottom surface of the inner wall of the water tank, a flow channel is generated between the valve plate member and the partition board, and the culture solution can flow through the flow channel.

[0015] Further, the yaw assembly includes a transmission rod fixedly connected to the end of the rotating shaft. An elastic member I is jointly connected between the bottom of the transmission rod and the outer wall of the water tank. The yaw assembly further includes an L-shaped plate fixedly connected to the support seat, and two guiding plates are symmetrically rotatably connected to one side of the L-shaped plate facing the transmission rod.

[0016] With the above technical solution, a guide wheel is rotatably connected to the lower end of the transmission rod. When the water tank rotates counterclockwise, the guide wheel moves upward from bottom to top along the inclined surface of the right guiding plate, and the elastic member I is stretched. The deflection of the transmission rod drives the rotation of the rotating shaft, causing the valve plate member to rotate clockwise. At this time, the flow channel is opened. When the water tank rotates counterclockwise to the maximum angle, the guide wheel cancels contact with the guiding plate, and the elastic member I drives the transmission rod to rotate reversely and reset, causing the valve plate member to rotate reversely to coincide with the partition board. At this time, the flow channel is closed. The situation is the same when the water tank rotates clockwise.

[0017] Further, the adjusting plate has a right trapezoidal structure, the inclined surface of the adjusting plate faces downward, and an inclined groove adapted to the adjusting plate is opened at the bottom of the inner wall of the water tank;

[0018] The yaw assembly further includes a trapezoidal plate arranged above the guiding plate. The trapezoidal plate is fixedly connected to the side wall of the L-shaped plate, and the end of the rotating shaft is in sliding contact with the trapezoidal plate.

[0019] With the above technical solution, when the end of the rotating shaft contacts the trapezoidal plate as the water tank rotates, the two rotating shafts drive the two adjusting plates to approach each other and squeeze the rubber strip, causing the vertical side surface of the adjusting plate to move away from the groove of the partition board. At the same time, a gap is generated between the lower inclined surface of the adjusting plate and the inclined groove. Therefore, when the lower end of the valve plate member moves away from the partition board, it contracts from both ends to the middle by itself. Similarly, when the lower end of the valve plate member approaches the partition board, it extends towards both ends. Therefore, the adjusting plate gradually moves to abut against the partition board and the water tank in an oblique movement manner, avoiding friction between the contact surfaces with the partition board and the water tank, thereby shearing and damaging the diatoms.

[0020] Further, the guiding member includes a fixed rod fixedly connected to the side wall of the adjusting plate. A guiding rod is slidably sleeved inside the other end of the fixed rod. An elastic member II is commonly connected between the guiding rod and the fixed rod;

[0021] An elastic member III is commonly connected between the lifting plate and the water tank. And an arc-shaped groove is formed on one side of the lifting plate close to the guiding rod.

[0022] With the above technical solution, when the adjusting plate rotates itself, the guiding rod on the rotating direction side of the adjusting plate moves towards the adjacent lifting plate. When the guiding rod is located above the arc-shaped groove, the elastic member II drives the guiding rod to extend into the arc-shaped groove. At the same time, the guiding rod on the other side of the adjusting plate cancels the contact with the lifting plate on this side, and the elastic member III on this side drives the arc-shaped plate to rotate until it fits against the inner wall of the water tank, closing the drain hole on this side. When the adjusting plate rotates in the reverse direction, the guiding rod located in the arc-shaped groove cooperates with the arc-shaped groove to drive the corresponding lifting plate and arc-shaped plate to rotate, opening the drain hole on this side. At the same time, the guiding rod on the other side moves into the upper end of the arc-shaped groove on this side.

[0023] Further, water inlet holes are formed on the pipe wall of the water inlet pipe located inside the water tank. A water guiding assembly is arranged inside the water inlet pipe. The water guiding assembly includes a water guiding block rotatably connected to the inner wall of the water inlet pipe. A gear I is fixedly connected to the side of the water guiding block away from the water inlet hole. A gear II is meshed and connected to the top of the gear I. The gear II is rotatably connected to the water inlet pipe. And the top of the gear II passes through the water inlet pipe and is meshed and connected to an inner arc rack. The inner arc rack is fixedly connected to the support seat;

[0024] The water guiding block includes a rotating plug rotatably connected to the inner wall of the water inlet pipe. An arc-shaped column is eccentrically connected to the side of the rotating plug facing the water inlet hole. The arc-shaped column fits against the inner wall of the water inlet pipe.

[0025] With the above technical solution, when the water tank rotates and tilts clockwise, the inner arc rack cooperates with the gear II and the gear I to drive the water guiding block to rotate clockwise. The rotation angle of the water guiding block is greater than the rotation angle of the water tank, so that the arc-shaped column drives to block the right water inlet hole, thereby avoiding the culture solution at the high liquid level on the right from moving to the left through the water inlet hole when the water tank is reset. Thus, in a single round-trip rotation cycle of the water tank, the flow rate of the culture solution into the circulation water pipe is further increased. The same principle applies when the water tank rotates counterclockwise.

[0026] Another object of the present invention is to provide a method for culturing diatoms, aiming at: making the culture solution circulate and flow through a non-mechanical contact type power.

[0027] To achieve the above object, the present invention provides the following technical solution: A method for culturing diatoms, including the following steps:

[0028] S1. Pour the culture medium and diatoms into the water tank and fill the circulating water pipe with them, making the liquid level at the upper port of the circulating water pipe level with the liquid level in the water tank.

[0029] S2. The driving mechanism drives the water tank to swing. The valve plate component contacts the yaw component and rotates in the opposite direction, causing more culture medium to accumulate on one side at the lower end of the water tank. Then the water tank resets, and the culture medium on both sides of the partition is distributed at unequal heights.

[0030] S3. When the valve plate component closes, it drives the arc plate on the high liquid level side to rotate upward, opening the drain hole on the high liquid level side. The culture medium at the high liquid level drains through the opened drain hole to the drain pipe fitting and flows back into the water tank through the circulating water pipe.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The driving mechanism drives the water tank to rotate forward and backward alternately, cooperating with the opening and closing of the valve plate component to achieve non-contact circulation of the culture medium. When the water tank tilts, the valve plate component opens, and the culture medium flows freely; when the water tank tends to be horizontal, the valve plate component closes, and using the gravitational potential energy, a liquid level difference is formed on both sides of the partition. The culture medium at the high liquid level flows into the circulating water pipe through the drain pipe fitting and then flows back to the water tank. This non-mechanical-contact circulation method completely avoids the damage to the silica shell structure of diatoms caused by the mechanical shear force of the traditional water pump impeller, significantly reduces the mortality rate of diatoms, and can effectively increase the diatom yield.

[0033] 2. The water guide block is linked with the water inlet pipe and rotates at an angle greater than that of the water tank, and can accurately block the water inlet hole on the tilted side. When the water tank tilts, the water guide block rotates quickly, effectively preventing the culture medium at the high liquid level from flowing to the other side through the water inlet hole, ensuring that more culture medium enters the circulating water pipe through the drain pipe fitting. At the same time, the returned culture medium is directly injected into the low liquid level side, reducing the flow time of the culture medium during subsequent tilting, greatly improving the circulation efficiency of the culture medium, and creating a more efficient environment for the growth of diatoms.

[0034] 3. When the rotating shaft does not contact the trapezoidal plate, the rubber strip plays a role, driving the adjusting plate to translate, achieving smooth fitting with the partition and the water tank, completely eliminating the physical damage to diatoms caused by friction and extrusion in the traditional contact method, and thus further reducing the damage to diatoms during the cultivation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a three-dimensional structural schematic diagram of the diatom cultivation device of the present invention;

[0036] Figure 2 is a structural schematic diagram of the support seat and the water tank of the diatom cultivation device of the present invention;

[0037] Figure 3 is a partial structural side view schematic diagram of the diatom cultivation device of the present invention;

[0038] Figure 4 Schematic cross-sectional view of the water tank and drainage pipe fittings structure of the diatom culture device of the present invention;

[0039] Figure 5 Schematic internal structure view of the water tank of the diatom culture device of the present invention;

[0040] Figure 6 Schematic view of the partition plate and valve plate structure of the diatom culture device of the present invention;

[0041] Figure 7 Schematic view of the rotating shaft and yaw assembly structure of the diatom culture device of the present invention;

[0042] Figure 8 Schematic plan view of the adjusting plate and water tank structure of the diatom culture device of the present invention;

[0043] Figure 9 Schematic view of the opening and closing states of the adjusting assembly structure of the diatom culture device of the present invention;

[0044] Figure 10 Schematic view of the control assembly structure of the diatom culture device of the present invention;

[0045] Figure 11 Schematic view of the water guiding assembly structure of the diatom culture device of the present invention;

[0046] Figure 12 Exploded view of the internal structure of the water guiding block of the diatom culture device of the present invention.

[0047] In the figure:

[0048] 1, circulating water pipe; 2, support base; 3, water tank; 4, water inlet pipe; 5, drainage pipe fitting; 51, tee; 52, arc pipe; 53, buffer tank; 6, partition plate; 7, valve plate part; 71, adjusting plate; 72, rubber strip; 73, rotating shaft; 8, driving mechanism; 81, reduction motor; 82, transmission gear; 83, outer arc rack; 9, yaw assembly; 91, transmission rod; 92, L-shaped plate; 93, guide plate; 94, trapezoidal plate; 10, control assembly; 101, arc plate; 102, lifting plate; 103, fixed rod; 104, guide rod; 105, arc groove; 11, water guiding assembly; 111, water guiding block; 112, gear one; 113, gear two; 114, inner arc rack. Detailed implementation manners

[0049] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings of the specification.

[0050] Example 1, referring to Figures 1 - 10, which is the first embodiment of the present invention, provides a diatom culture device, including a support frame and a circulating water pipe 1 installed on the support frame. It further includes a support base 2. Above the support base 2, there is a water tank 3 with a superior arc-shaped structure. A water inlet pipe 4 is fixedly penetrated through the top of the water tank 3. The bottom of the water tank 3 is fixedly connected with a drainage pipe fitting 5, and the water tank 3 is communicated with the drainage pipe fitting 5. The upper port of the circulating water pipe 1 is rotatably sleeved with the water inlet pipe 4, and the lower port of the circulating water pipe 1 is connected to the drainage pipe fitting 5. The water inlet pipe 4 is rotatably connected to the support base 2. A driving mechanism 8 is installed on the support base 2, and the driving mechanism 8 is used to drive the water tank 3 to rotate back and forth. A partition plate 6 is fixedly connected between the bottom of the water inlet pipe 4 and the inner wall of the water tank 3. A valve plate member 7 is rotatably connected to the bottom of the partition plate 6. Yaw assemblies 9 are arranged on both opposite side walls of the support base 2. When the water tank 3 rotates, the yaw assemblies 9 drive the valve plate member 7 to rotate and open. Two groups of regulation assemblies 10 are symmetrically arranged at the bottom of the inner wall of the water tank 3; the regulation assembly 10 includes an arc-shaped plate 101 hinged to the inner wall of the water tank 3. The arc-shaped plate 101 is arranged above the drainage hole and fits with the inner wall of the water tank 3. Both ends in the length direction of the arc-shaped plate 101 are fixedly connected with lifting plates 102. On one side of the lifting plate 102, there is a guiding member connected to the valve plate member 7. The guiding member moves synchronously with the valve plate member 7 and drives the arc-shaped plate 101 to rotate.

[0051] Specifically, the driving mechanism 8 drives the water tank 3 to rotate alternately forward and backward. When the water tank 3 rotates to one side, the yaw assembly 9 drives the valve plate member 7 to rotate in the opposite direction, and a flow channel is formed between the partition plate 6 and the valve plate member 7. The culture solution on both sides of the partition plate 6 can flow through the flow channel. After the water tank 3 rotates to the maximum angle, the valve plate member 7 coincides with the partition plate 6, closing the flow channel. At the same time, the valve plate member 7 drives the arc-shaped plate 101 on that side to rotate through the guiding member on the side away from the rotation direction, opening the drainage hole on that side. During the reset process of the water tank 3, the liquid levels of the culture solution on both sides of the partition plate 6 are different. The culture solution with a high liquid level flows through the opened drainage hole into the drainage pipe fitting 5, and then flows into the circulating water pipe 1, and then flows back into the water tank 3 again through the upper end of the circulating water pipe 1. Thus, it realizes the flow of the culture solution without mechanical power, avoiding damage to diatoms.

[0052] In actual work, an LED lamp tube (not shown in the figure) is installed on the support frame. The LED lamp tube is arranged along the circulating water pipe 1 for supplementing light. The lower end of the circulating water pipe 1 is connected with a gas exchange unit (not shown in the figure), and a carbon source is supplemented into the culture solution through the gas exchange unit to promote the photosynthesis of diatoms.

[0053] It can be understood that when the water tank 3 is horizontally arranged, the liquid level height of the culture solution in the water inlet pipe 4 is the same as that in the water tank 3. When the water tank 3 rotates and tilts to one side from the horizontal position, with the flow channel open, the liquid level height of the culture solution in the water tank 3 is still the same as that in the water inlet pipe 4. When the flow channel is closed and the water tank 3 rotates from the tilted position back to the horizontal position in the reverse direction, the liquid level height of the culture solution on the lower side of the originally tilted water tank 3 is higher than that on the other side. At this time, the liquid level on the side with a higher liquid level height is higher than the liquid level of the culture solution in the water inlet pipe 4. Under the action of gravitational potential energy, the culture solution on the side with the higher liquid level flows into the circulating water pipe 1 through the drainage pipe fitting 5 and finally flows back into the water tank 3 through the water inlet pipe 4.

[0054] Referring to Figure 4 , the drainage pipe fitting 5 includes a three-way pipe 51 fixedly penetrating and supporting the support base 2. The bottom end of the three-way pipe 51 is fixedly connected to the lower port of the circulating water pipe 1. An arc-shaped pipe 52 is slidably sleeved inside the top of the three-way pipe 51. A plurality of through holes are formed in the middle of the arc-shaped pipe 52. Buffer boxes 53 are fixedly connected to both ends of the arc-shaped pipe 52. The buffer boxes 53 are fixedly connected to the bottom of the outer wall of the water tank 3.

[0055] Specifically, when the water tank 3 swings back and forth alternately, it drives the arc-shaped pipe 52 to move synchronously. The through holes of the arc-shaped pipe 52 are always located inside the three-way pipe 51, so that the culture solution on the side with the higher liquid level enters the buffer box 53 on this side, then flows to the arc-shaped pipe 52, and flows into the three-way pipe 51 through the through holes and then flows downward.

[0056] Among them, a waterproof rubber ring is fixedly provided at the connection between the upper part of the three-way pipe 51 and the arc-shaped pipe 52. The outer wall of the arc-shaped pipe 52 is a smooth surface. The waterproof rubber ring is in sliding contact with the outer wall of the arc-shaped pipe 52, which improves the sealing performance while ensuring smooth sliding and prevents the leakage of the culture solution.

[0057] Referring to Figure 3 , the driving mechanism 8 includes a reduction motor 81 fixedly installed on one side of the support base 2. The output end of the reduction motor 81 is fixedly connected to a transmission gear 82. An outer arc rack 83 is meshed and connected above the transmission gear 82. The outer arc rack 83 is fixedly connected to the bottom of the water tank 3.

[0058] Specifically, after the reduction motor 81 rotates clockwise for several circles, it changes the direction and rotates counterclockwise for the same number of circles. The output shaft of the reduction motor 81 drives the transmission gear 82 to rotate synchronously. The cooperation between the transmission gear 82 and the outer arc rack 83 makes the water tank 3 first rotate counterclockwise by a certain angle and then rotate clockwise by the same angle in the reverse direction.

[0059] It can be understood that the maximum rotation angle of the driving mechanism 8 driving the water tank 3 is an acute angle, and when the water tank 3 rotates to the maximum angle, the liquid level of the water tank 3 is lower than the upper opening of the water tank 3.

[0060] Embodiment 2, referring toFigure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the partition plate 6 has a concave structure, and the valve plate member 7 is arranged at the concave structure of the partition plate 6. The valve plate member 7 includes two adjusting plates 71. The adjusting plates 71 are in abutting cooperation with the partition plate 6 and the water tank 3. A rubber strip 72 is fixedly connected between the two adjusting plates 71. The upper end of the adjusting plate 71 is fixedly connected with a rotating shaft 73. The rotating shaft 73 movably penetrates through the partition plate 6 and the water tank 3 and extends to the outside of the water tank 3.

[0061] Specifically, when the rotating shaft 73 rotates, it can drive the adjusting plate 71 to rotate. When the adjusting plate 71 abuts against the groove of the partition plate 6 and the bottom surface of the inner wall of the water tank 3, the partition plate 6 and the valve plate member 7 cooperate to divide the interior of the water tank 3 into two spaces of the same size. When the adjusting plate 71 does not abut against the groove of the partition plate 6 and the bottom surface of the inner wall of the water tank 3, a flow channel is generated between the valve plate member 7 and the partition plate 6, and the culture solution can flow through the flow channel.

[0062] It can be understood that the elasticity of the rubber strip 72 can make the side wall of the adjusting plate 71 abut tightly against the groove of the partition plate 6, improving the sealing performance.

[0063] Refer to Figure 2 、 Figure 6 and Figure 7 The yaw assembly 9 includes a transmission rod 91 fixedly connected to the end of the rotating shaft 73. An elastic member I is commonly connected between the bottom of the transmission rod 91 and the outer wall of the water tank 3. The yaw assembly 9 further includes an L-shaped plate 92 fixedly connected to the support seat 2. Two guide plates 93 are symmetrically rotatably connected to the side of the L-shaped plate 92 facing the transmission rod 91.

[0064] Specifically, a guide wheel is rotatably connected to the lower end of the transmission rod 91. When the water tank 3 rotates counterclockwise, the guide wheel moves upward from bottom to top along the inclined surface of the right guide plate 93, and the elastic member I is stretched. The transmission rod 91 deflects to drive the rotating shaft 73 to rotate, causing the valve plate member 7 to rotate clockwise. At this time, the flow channel is opened. When the water tank 3 rotates counterclockwise to the maximum angle, the guide wheel cancels contact with the guide plate 93, and the elastic member I drives the transmission rod 91 to rotate reversely and reset, causing the valve plate member 7 to rotate reversely to coincide with the partition plate 6. At this time, the flow channel is closed. The situation is the same when the water tank 3 rotates clockwise.

[0065] Among them, the two guide plates 93 are arranged in a V shape, and the lower ends are in contact with the L-shaped plate 92, and the bottom surface height of the rotating shaft 73 is higher than the top surface height of the guide plates 93. When the water tank 3 rotates from horizontal to inclined, the guide wheel rolls and contacts the upper inclined surface of the corresponding guide plate 93. Since the guide plate 93 abuts against the L-shaped plate 92 and cannot rotate, the guide wheel drives the transmission rod 91 to rotate. When the water tank 3 rotates from inclined to horizontal, the guide wheel contacts the lower inclined surface of the corresponding guide plate 93 and drives the guide plate 93 to rotate and rise. When the water tank 3 is horizontally arranged, the guide wheel cancels contact with the guide plate 93, and the guide plate 93 rotates reversely to abut against the L-shaped plate 92.

[0066] Referring to Figures 6 - 8 , the adjusting plate 71 has a right trapezoidal structure, the inclined surface of the adjusting plate 71 is arranged downward, and an inclined groove adapted to the adjusting plate 71 is opened at the bottom of the inner wall of the water tank 3; the yaw assembly 9 further includes a trapezoidal plate 94 arranged above the guide plate 93, the trapezoidal plate 94 is fixedly connected to the side wall of the L-shaped plate 92, and the end of the rotating shaft 73 is in sliding contact with the trapezoidal plate 94.

[0067] Specifically, when the rotating shaft 73 rotates following the water tank 3, the end contacts the trapezoidal plate 94, so that the two rotating shafts 73 drive the two adjusting plates 71 to approach each other and squeeze the rubber strip 72, making the vertical side surface of the adjusting plate 71 away from the groove of the partition plate 6. At the same time, a gap is generated between the lower inclined surface of the adjusting plate 71 and the inclined groove. Thus, when the lower end of the valve plate member 7 moves away from the partition plate 6, it contracts from both ends to the middle by itself. Similarly, when the lower end of the valve plate member 7 approaches the partition plate 6, it extends towards both ends by itself. Therefore, the adjusting plate 71 gradually moves to abut against the partition plate 6 and the water tank 3 in an oblique movement manner, avoiding friction between the contact surfaces with the partition plate 6 and the water tank 3, thereby shearing and damaging the diatoms.

[0068] It can be understood that during the process of the adjusting plate 71 abutting against the partition plate 6 and the water tank 3 by translation, the side surface of the adjusting plate 71 can first push away the surrounding liquid and then gradually abut tightly against the partition plate 6 and the water tank 3 to achieve sealing. On the one hand, it can avoid the extrusion damage to the diatoms caused by the traditional sliding friction abutment. On the other hand, it can avoid the wear of the adjusting plate 71 itself and the abutment of the partition plate 6 and the water tank 3, and maintain the long-term sealing performance.

[0069] Referring to Figure 9 and Figure 10 , the guiding member includes a fixing rod 103 fixedly connected to the side wall of the adjusting plate 71. The other end of the fixing rod 103 is slidably sleeved with a guiding rod 104, and an elastic member II is jointly connected between the guiding rod 104 and the fixing rod 103; an elastic member III is jointly connected between the lifting plate 102 and the water tank 3, and an arc-shaped groove 105 is opened on the side of the lifting plate 102 close to the guiding rod 104.

[0070] Specifically, when the adjusting plate 71 rotates itself, the guide rod 104 on the side of the rotating direction of the adjusting plate 71 moves towards the adjacent lifting plate 102. When the guide rod 104 is located above the arc-shaped groove 105, the second elastic member drives the guide rod 104 to extend into the arc-shaped groove 105. At the same time, the guide rod 104 on the other side of the adjusting plate 71 cancels the contact with the lifting plate 102 on this side, and the third elastic member on this side drives the arc-shaped plate 101 to rotate and fit against the inner wall of the water tank 3, closing the drain hole on this side. When the adjusting plate 71 rotates in the reverse direction, the guide rod 104 located in the arc-shaped groove 105 cooperates with the arc-shaped groove 105 to drive the corresponding lifting plate 102 and arc-shaped plate 101 to rotate, opening the drain hole on this side. At the same time, the guide rod 104 on the other side moves into the upper end of the arc-shaped groove 105 on this side.

[0071] Among them, the first elastic member, the second elastic member, and the third elastic member all adopt springs. It can be understood that the total elastic force of all the first elastic members is greater than the total elastic forces of the second elastic member and the third elastic member, so that when the first elastic member drives the valve plate member 7 to reset, the guide rod 104 on one side can overcome the elastic force of the third elastic member to drive the arc-shaped plate 101 to rotate and rise.

[0072] In actual use, referring to Figure 10 , a relief inclined surface is provided on the side of the lifting plate 102 facing the guide rod 104, so that when the guide rod 104 moves towards the arc-shaped groove 105, it contacts the relief inclined surface and contracts into the fixed rod 103. The remaining structure is the same as that of Embodiment 1.

[0073] Embodiment 3, referring to Figure 5 、 Figure 11 And Figure 12 , is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: a water inlet hole is provided on the pipe wall of the water inlet pipe 4 located in the water tank 3, and a water guiding component 11 is provided in the water inlet pipe 4. The water guiding component 11 includes a water guiding block 111 rotatably connected to the inner wall of the water inlet pipe 4. A first gear 112 is fixedly connected to the side of the water guiding block 111 away from the water inlet hole. A second gear 113 is meshed with the top of the first gear 112. The second gear 113 is rotatably connected to the water inlet pipe 4, and the top of the second gear 113 passes through the water inlet pipe 4 and is meshed with an inner arc rack 114. The inner arc rack 114 is fixedly connected to the support base 2; the water guiding block 111 includes a rotating plug rotatably connected to the inner wall of the water inlet pipe 4. An arc-shaped column is eccentrically connected to the side of the rotating plug facing the water inlet hole, and the arc-shaped column is in contact with the inner wall of the water inlet pipe 4.

[0074] Specifically, when the water tank 3 rotates clockwise and tilts, the inner arc rack 114 cooperates with the second gear 113 and the first gear 112 to drive the water guide block 111 to rotate clockwise. The rotation angle of the water guide block 111 is greater than that of the water tank 3, so that the arc-shaped column is driven to block the right water inlet hole. Thus, when the water tank 3 resets, the culture solution with a high liquid level on the right side can be prevented from flowing to the left side through the water inlet hole. Therefore, in a single round-trip rotation cycle of the water tank 3, the flow rate of the culture solution into the circulation water pipe 1 is further increased. The same applies when the water tank 3 rotates counterclockwise.

[0075] Wherein, after the arc-shaped column abuts against one side of the water inlet hole, the culture solution in the circulation water pipe 1 directly flows into the water tank 3 on the side with a lower liquid level through the through hole opened on the other side. When the water tank 3 changes from an inclined state to a horizontal state, the liquid levels on both sides of the partition plate 6 are the same again, thus avoiding a height difference between the liquid levels on both sides, and further shortening the flow time of the culture solution when the water tank 3 tilts next time, which helps to improve the circulation speed of the culture solution. The rest of the structure is the same as that of Embodiment 2.

[0076] Combining Embodiments 1-3, the working principle of the present invention is as follows: Pour the culture solution and diatoms into the water tank 3 in a horizontal state, make the liquid level at the upper end of the circulation water pipe 1 flush with the liquid level of the water tank 3, and the driving mechanism 8 drives the water tank 3 to perform alternating forward and reverse tilting movements. When the water tank 3 rotates clockwise and tilts, the guide wheel of the transmission rod 91 contacts the inclined surface of the left guide plate 93, causing the valve plate member 7 to rotate counterclockwise. A part of the culture solution on the left side of the partition plate 6 flows to the right side of the partition plate 6 through the flow channel. When the water tank 3 rotates clockwise to the maximum angle, the guide wheel cancels contact with the guide plate 93, and the first elastic member drives the valve plate member 7 to close. At the same time, the right guide rod 104 cooperates with the arc-shaped groove 105 to drive the arc-shaped plate 101 to rotate upward, opening the right drain hole. When the water tank 3 rotates towards the horizontal state, the liquid level on the right side of the partition plate 6 is higher than that on the left side. The culture solution on the right side enters the drainage pipe member 5 through the right drain hole and flows into the circulation water pipe 1, and finally the culture solution returns to the water tank 3 again. The same applies when the water tank 3 tilts counterclockwise, thereby realizing the circulation and flow of the culture solution without mechanical contact.

[0077] Embodiment 4, referring to Figures 1 - 10 , is the fourth embodiment of the present invention, providing: A method for culturing diatoms, comprising the following steps:

[0078] S1. Pour the culture solution and diatoms into the water tank 3 and fill the circulation water pipe 1, and make the liquid level at the upper port of the circulation water pipe 1 flush with the liquid level of the water tank 3;

[0079] S2. The driving mechanism 8 drives the water tank 3 to swing, the valve plate member 7 contacts the yaw assembly 9 and rotates in the opposite direction, so that more culture solution accumulates on the low-end side of the water tank 3, and then the water tank 3 resets, and the culture solutions on both sides of the partition plate 6 are distributed at unequal heights;

[0080] When the valve plate member 7 closes, it drives the arc-shaped plate 101 on the high liquid level side to rotate upward, opening the drain hole on the high liquid level side. The culture solution at the high liquid level is discharged through the opened drain hole to the drain pipe fitting 5 and flows back into the water tank 3 again through the circulation water pipe 1.

[0081] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A diatom culture device, comprising a support frame and a circulating water pipe installed on the support frame, characterized in that: It further includes a support base, above which there is a water tank in a superior arc structure. The top of the water tank is fixedly penetrated with a water inlet pipe, and the bottom of the water tank is fixedly connected with a drainage pipe fitting. The water tank is communicated with the drainage pipe fitting. The upper port of the circulating water pipe is rotatably sleeved with the water inlet pipe, and the lower port of the circulating water pipe is connected with the drainage pipe fitting. The water inlet pipe is rotatably connected with the support base. A driving mechanism is installed on the support base, and the driving mechanism is used to drive the water tank to rotate back and forth. A partition plate is fixedly connected between the bottom of the water inlet pipe and the inner wall of the water tank. A valve plate part is rotatably connected to the bottom of the partition plate. Yaw components are arranged on both opposite side walls of the support base. When the water tank rotates, the yaw components drive the valve plate part to rotate and open. Two groups of regulation components are symmetrically arranged at the bottom of the inner wall of the water tank; The regulation component includes an arc-shaped plate hinged to the inner wall of the water tank. The arc-shaped plate is arranged above the drain hole and fits with the inner wall of the water tank. Both ends in the length direction of the arc-shaped plate are fixedly connected with lifting plates. A guiding component connected to the valve plate part is arranged on one side of the lifting plate. The guiding component moves synchronously with the valve plate part and drives the arc-shaped plate to rotate.

2. The diatom cultivation device according to claim 1, characterized in that: The drainage pipe fitting includes a tee pipe fixedly penetrating the support base. The bottom end of the tee pipe is fixedly connected to the lower port of the circulating water pipe. An arc-shaped pipe is slidably sleeved in the top of the tee pipe. A plurality of through holes are opened in the middle of the arc-shaped pipe. Buffer boxes are fixedly connected to both ends of the arc-shaped pipe. The buffer boxes are fixedly connected to the bottom of the outer wall of the water tank.

3. The diatom culture device according to claim 1, characterized in that: The driving mechanism includes a reduction motor fixedly installed on one side of the support base. The output end of the reduction motor is fixedly connected with a transmission gear. An outer arc rack is meshed and connected above the transmission gear. The outer arc rack is fixedly connected to the bottom of the water tank.

4. The diatom culture device according to claim 1, wherein: The partition plate has a concave structure. The valve plate part is arranged at the concave structure of the partition plate. The valve plate part includes two adjusting plates. The adjusting plates are in abutting fit with the partition plate and the water tank. A rubber strip is fixedly connected between the two adjusting plates. The upper end of the adjusting plate is fixedly connected with a rotating shaft. The rotating shaft movably penetrates the partition plate and the water tank and extends to the outside of the water tank.

5. The diatom culture device according to claim 4, wherein: The yaw component includes a transmission rod fixedly connected to the end of the rotating shaft. An elastic member I is jointly connected between the bottom of the transmission rod and the outer wall of the water tank. The yaw component further includes an L-shaped plate fixedly connected to the support base. Two guiding plates are symmetrically rotatably connected to one side of the L-shaped plate facing the transmission rod.

6. The diatom culture device according to claim 4, wherein: The adjusting plate has a right trapezoidal structure. The inclined surface of the adjusting plate faces downward. An inclined groove adapted to the adjusting plate is opened at the bottom of the inner wall of the water tank; The yaw component further includes a trapezoidal plate arranged above the guiding plate. The trapezoidal plate is fixedly connected to the side wall of the L-shaped plate, and the end of the rotating shaft is in sliding contact with the trapezoidal plate.

7. The diatom culture device according to claim 1, wherein: The guiding component includes a fixing rod fixedly connected to the side wall of the adjusting plate. A guiding rod is slidably sleeved in the other end of the fixing rod. An elastic member II is jointly connected between the guiding rod and the fixing rod; An elastic member III is jointly connected between the lifting plate and the water tank. An arc-shaped groove is opened on one side of the lifting plate close to the guiding rod.

8. The diatom culture device according to claim 1, wherein: Water inlet holes are formed in the pipe wall of the water inlet pipe located inside the water tank. A water guiding assembly is arranged inside the water inlet pipe. The water guiding assembly includes a water guiding block rotatably connected to the inner wall of the water inlet pipe. A first gear is fixedly connected to one side of the water guiding block away from the water inlet hole. A second gear is meshed and connected to the top of the first gear. The second gear is rotatably connected to the water inlet pipe, and the top of the second gear penetrates through the water inlet pipe and is meshed and connected to an inner arc rack. The inner arc rack is fixedly connected to the support seat. The water guiding block includes a rotating plug rotatably connected to the inner wall of the water inlet pipe. An arc-shaped column is eccentrically connected to one side of the rotating plug facing the water inlet hole. The arc-shaped column is in contact with the inner wall of the water inlet pipe.

9. A method for culturing diatoms, which is applied to the diatom culturing device described in any one of claims 1-8, characterized in that: It includes the following steps: Pour the culture solution and diatoms into the water tank and fill the circulating water pipe with them. The liquid level at the upper port of the circulating water pipe is flush with the liquid level in the water tank. The driving mechanism drives the water tank to swing. The valve plate member contacts the yaw assembly and rotates in the reverse direction, causing more culture solution to accumulate on one side at the lower end of the water tank. Then the water tank resets, and the culture solutions on both sides of the partition are distributed at unequal heights. When the valve plate member closes, it drives the arc-shaped plate on the high liquid level side to rotate upward, opening the drain hole on the high liquid level side. The culture solution at the high liquid level drains to the drain pipe fitting through the opened drain hole and flows back into the water tank again through the circulating water pipe.

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