Ultrasonic cleaning device for drip irrigation tape

Abstract

An ultrasonic cleaning device for drip irrigation tape includes a cleaning tank containing cleaning liquid, an ultrasonic vibration assembly arranged in the cleaning tank, a drip irrigation tape positioning assembly for positioning the drip irrigation tape in the cleaning tank, and a drip irrigation tape conveying mechanism for conveying the drip irrigation tape through the cleaning tank, wherein the cleaning device further includes a pumping assembly for injecting cleaning liquid into the drip irrigation tape. The ultrasonic cleaning device according to the present application injects cleaning liquid into the drip irrigation tape through the pumping assembly, thereby enabling the cleaning liquid in the cleaning tank to form a continuous fluid with the cleaning liquid in the drip irrigation tape outside the cleaning tank, so as to transmit the ultrasonic vibration of the cleaning liquid in the cleaning tank to the corresponding part of the drip irrigation tape containing the cleaning liquid, so as to ultrasonically clean the corresponding part, and improve the cleaning effect of the drip irrigation tape.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural irrigation technology, and more particularly to an apparatus for cleaning drip irrigation tape. BACKGROUND

[0002] Drip irrigation is one of the most water-saving and efficient irrigation technologies in the world. Emitters, also known as water applicators, are the most critical components of drip irrigation hoses. Their role is to allow the pressurized water flow to pass through the internal flow channel to dissipate the energy, so that the water is dripped into the soil at a stable and uniform low flow rate. The flow rate of the emitter is very small, usually only 1-8 L / h per emitter. The internal flow channel structure of the emitter is mostly zigzag or labyrinth-shaped, and the flow channel width is relatively narrow, usually only about 0.3-2 mm. Therefore, the emitter is easily clogged by impurities in the water, resulting in scrap.

[0003] According to the causes of clogging, emitter clogging can be divided into several types such as physical clogging, chemical clogging and biological clogging. Physical clogging refers to the clogging of emitters by organic or inorganic suspended matter in the water, such as biological residues, sand, silt and clay particles, etc. Chemical clogging mainly refers to the chemical substances dissolved in the water, which will become insoluble under certain conditions and precipitate in the water applicator to cause clogging. Biological clogging refers to the clogging of emitters by water-borne organisms, such as algae, plankton, bacteria and slime, etc. These organisms may grow and reproduce after entering the drip irrigation system, causing the flow channel area of the emitter to decrease and causing clogging of the emitter. The clogging of the emitter flow channel will cause the uniformity of the drip irrigation system to decrease, resulting in a decrease in the efficiency of the drip irrigation system, and even the entire drip irrigation system may be scrapped.

[0004] The capital investment for a drip irrigation system is relatively high, so once the drip irrigation system is built, it usually needs to be used continuously for 3 to 5 years to recover the construction cost and generate a profit. Currently, in order to avoid emitter clogging and ensure the service life of the drip irrigation system, the main measure is to take a "prevention first" approach to avoid clogging, such as filtering the irrigation water more strictly to reduce impurities in the water, thereby reducing the probability of physical clogging; chemically treating the irrigation water to make it weakly acidic (pH < 7), thereby reducing the chemical precipitation of calcium, magnesium and other ions in the emitter flow channel, and at the same time making the water slightly acidic to reduce the reproduction of algae and some plankton in the flow channel; in addition, the problem of emitter clogging is a cumulative process over time, and the problem of emitter clogging becomes more serious as the drip irrigation tape is used for a longer period of time. By using a "disposable" low-cost drip irrigation tape, it will be discarded after a period of use. However, the existence of such "disposable" drip irrigation tape cannot be completely recycled and causes environmental pollution, so its use also has certain environmental risks.

[0005] In view of the above problems existing in the prior art, it is necessary to propose a technology capable of prolonging the service life of the drip irrigation tape so as to enable the drip irrigation tape to have a longer service life under the premise of ensuring its irrigation performance and efficiency. SUMMARY

[0006] To solve at least one aspect of the above technical problems, embodiments of the present application provide a drip irrigation tape ultrasonic cleaning device, which comprises:

[0007] a cleaning tank, in which a cleaning liquid is contained;

[0008] an ultrasonic generator, which is arranged in the cleaning tank and is used to generate ultrasonic vibration in the cleaning liquid;

[0009] a drip irrigation tape positioning assembly, which is used to position the drip irrigation tape in the cleaning tank so that the cleaning liquid can immerse the part of the drip irrigation tape arranged in the cleaning tank;

[0010] a drip irrigation tape conveying mechanism, which is used to convey the drip irrigation tape through the cleaning tank;

[0011] wherein the drip irrigation tape ultrasonic cleaning device further comprises a pumping assembly for injecting the cleaning liquid into the drip irrigation tape during the ultrasonic cleaning of the drip irrigation tape.

[0012] According to some embodiments, the drip irrigation tape conveying mechanism comprises a first reel arranged at a first side of the cleaning tank and a second reel arranged at a second side of the cleaning tank, the uncleaned drip irrigation tape on the first reel is conveyed through the cleaning tank via the drip irrigation tape conveying mechanism, and the cleaned drip irrigation tape is wound on the second reel.

[0013] According to some embodiments, the pumping assembly comprises a pump for pumping the cleaning liquid and a fluid connection assembly fluidly connecting the output port of the pump to the drip irrigation tape.

[0014] According to some embodiments, the fluid connection assembly comprises a first connection pipeline fixedly arranged on the first reel and a rotary joint arranged at the end of the first fluid pipeline connected to the output port of the pump.

[0015] According to some embodiments, the first connection pipeline comprises a coaxial pipeline portion arranged coaxially with the rotation axis of the first reel, a bias pipeline portion offset with respect to the axis of the rotation axis, and a connection pipeline portion connecting the coaxial pipeline portion and the bias pipeline portion, the bias pipeline portion is connected to the side wall of the first reel, so that the bias pipeline portion can pass through the side wall to be connected to the drip irrigation tape.

[0016] According to some embodiments, the drip irrigation tape positioning assembly comprises a first rotating roller arranged at an edge of a first side of the cleaning tank, a second rotating roller arranged at an edge of a second side of the cleaning tank, and a third rotating roller set arranged at the bottom of the cleaning tank.

[0017] According to some embodiments, the third rotating roller set comprises a fourth rotating roller arranged close to the first rotating roller in the horizontal direction of the cleaning liquid, and a fifth rotating roller arranged close to the second rotating roller in the horizontal direction of the cleaning liquid.

[0018] According to some embodiments, the diameters of the axial ends of the first rotating roller and the second rotating roller are greater than the diameter of the axial center, so that the drip irrigation tape is located between the axial ends when being conveyed by the first rotating roller and the second rotating roller.

[0019] According to some embodiments, the first rotating roller and the second rotating roller have a drainage structure, so that the cleaning liquid in the drip irrigation tape can be drained through the drainage structure when the drip irrigation tape is conveyed by the first rotating roller and the second rotating roller.

[0020] According to some embodiments, the drainage structure comprises a drainage hole arranged in the axial end, so that the cleaning liquid drained by the drip irrigation tape wound on the first rotating roller and the second rotating roller is drained through the drainage hole.

[0021] According to some embodiments, the cleaning device further comprises a cleaning liquid collecting assembly arranged at the bottom of the cleaning tank.

[0022] According to some embodiments, the cleaning liquid collecting assembly comprises a liquid return pool for storing cleaning liquid, and a filter screen arranged above the liquid surface of the cleaning liquid in the liquid return pool, the filter screen being used for filtering the cleaning liquid flowing into the liquid return pool, and the pumping pipeline inlet of the pumping assembly being located in the liquid return pool.

[0023] The drip irrigation tape ultrasonic cleaning device according to the present application can inject cleaning liquid into the drip irrigation tape through the pumping assembly, so that the cleaning liquid in the cleaning tank and the cleaning liquid in the drip irrigation tape outside the cleaning tank form a continuous fluid, and the ultrasonic vibration of the cleaning liquid in the cleaning tank is transmitted to the corresponding part of the drip irrigation tape containing the cleaning liquid along the continuous fluid, so as to ultrasonically clean the corresponding part. Since the cleaning liquid is filled in a large part of the drip irrigation tape, the drip irrigation tape can be ultrasonically cleaned in a longer length range, the cleaning time of the drip irrigation tape is prolonged, and thus the cleaning effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure schematic diagram of the drip irrigation tape ultrasonic cleaning device according to the present application is shown.

[0025] Figure 2 Fig. 2 shows a schematic view of the pumping assembly of the drip irrigation tape ultrasonic cleaning device according to the present application.

[0026] Figure 3 Fig. 3 shows a front view of the rotating roller of the drip irrigation tape ultrasonic cleaning device according to the present application.

[0027] Figure 4 Fig. 4 shows a side view of the rotating roller of the drip irrigation tape ultrasonic cleaning device according to the present application. DETAILED DESCRIPTION

[0028] Reference will now be made in detail to the various embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description of embodiments, numerous specific details are set forth in order to provide a thorough understanding of the various described embodiments. However, it will be apparent to one skilled in the art that the various described embodiments can be practiced without these specific details. In other instances, well-known methods, procedures, components, etc. have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

[0029] The field length of a drip irrigation tape is typically in the range of 150-200 meters. For a conventional drip irrigation system, once the drip irrigation tape is laid in the field, it is usually used continuously for a long period of time. Since the clogging of the drippers is a process that accumulates over time, it is conceivable that after the drip irrigation system has been used for a period of time (e.g. after the end of one or two crop growing seasons), the drip irrigation tape in the field is collected, cleaned in a centralized manner to address the clogging of the drippers, and then re-laid in the field for continued use. It is important to note, however, that due to the small size of the flow channels of the drippers, conventional physical cleaning methods, such as cleaning by immersion or brushing, are not able to completely clean the flow channels of the drippers, and thus the cleaned drip irrigation tape cannot be completely regenerated and reused. Therefore, the present application proposes an ultrasonic cleaning device that is able to clean the flow channels of the drip irrigation tape to the maximum extent possible, thereby ensuring the drip irrigation performance and efficiency of the drip irrigation tape.

[0030] The present application proposes a drip irrigation tape ultrasonic cleaning device 100, as shown in Figure 1As shown, the ultrasonic cleaning device 100 for drip irrigation tape includes a cleaning tank 120 containing cleaning fluid, an ultrasonic vibration component 140 disposed within the cleaning tank 120, a drip irrigation tape positioning component 160 for positioning the drip irrigation tape 200 within the cleaning tank 120, and a drip irrigation tape conveying mechanism 180 for conveying the drip irrigation tape 200 through the cleaning tank 120. The ultrasonic cleaning device 100 according to the present invention also includes a pumping component 190 for injecting cleaning fluid into the drip irrigation tape 200. The cleaning fluid for cleaning the drip irrigation tape 200 is stored in the cleaning tank 120, ensuring that the drip irrigation tape 200 is fully immersed in the cleaning fluid during the cleaning process, thus achieving thorough cleaning. The ultrasonic vibration component 140, disposed within the cleaning tank 120, generates ultrasonic vibrations within the cleaning fluid, thereby cleaning the inner wall of the drip irrigation tape 200 and the drippers, removing impurities from the inner wall of the drip irrigation tape 200 and inside the drippers. The drip tape positioning assembly 160 allows the ultrasonically cleaned portion of the drip tape 200 to be immersed in the cleaning solution in the cleaning tank 120, facilitating cleaning of the drip tape 200 with the cleaning solution. The drip tape conveying mechanism 180 allows the drip tape 200 to continuously pass through the cleaning tank 120 for continuous cleaning. The pumping assembly 190 continuously injects cleaning solution into the drip tape 200 during the cleaning process, ensuring that the drip tape 200 is substantially continuously filled with cleaning solution during cleaning. Ultrasonic vibrations are transmitted through the cleaning solution, resulting in thorough and comprehensive ultrasonic cleaning of the interior of the drip tape 200.

[0031] The ultrasonic cleaning device 100 for drip irrigation tape according to the present invention injects cleaning fluid into the drip irrigation tape 200 via a pumping assembly 190. This allows the cleaning fluid in the cleaning tank 120 to form a continuous fluid with the cleaning fluid in the drip irrigation tape 200 located outside the cleaning tank 120. This allows the ultrasonic vibration of the cleaning fluid in the cleaning tank 120 to be transmitted along the continuous fluid to the corresponding portion of the drip irrigation tape 200 containing the cleaning fluid, thus ultrasonically cleaning that portion. Therefore, although only a portion of the drip irrigation tape 200 is immersed in the cleaning fluid in the cleaning tank 120, because a large portion of the drip irrigation tape 200 is filled with cleaning fluid, ultrasonic cleaning of the drip irrigation tape 200 can be performed over a relatively long length, extending the cleaning time and resulting in a better cleaning effect.

[0032] The ultrasonic vibration assembly 140 may include an ultrasonic generator and a transducer. The ultrasonic generator converts AC power into ultrasonic frequency power, typically ranging from 16kHz to 68kHz, and up to 1000kHz. The transducer, also known as a vibrating plate, converts the electromagnetic vibration generated by the ultrasonic generator into ultrasonic vibration of the transducer itself, which is then transmitted to the cleaning fluid in the cleaning tank 120 to generate cavitation. The transducer is usually located at the bottom of the cleaning tank 120. Alternatively, the transducer may be located on the side wall of the cleaning tank 120, or simultaneously on both the bottom and side wall of the cleaning tank 120.

[0033] The drip irrigation tape conveying mechanism 180 of the ultrasonic cleaning device 100 for drip irrigation tape according to the present invention may include a first reel 182 disposed on a first side of the cleaning tank 120 and a second reel 184 disposed on a second side of the cleaning tank 120. The first reel 182 is used to wind up the unwashed drip irrigation tape 200, and the second reel 184 is used to wind up the washed drip irrigation tape 200. The unwashed drip irrigation tape 200 located on the first reel 182 is conveyed through the cleaning tank 120 via the drip irrigation tape conveying mechanism 180, and the washed drip irrigation tape 200 is wound onto the second reel 184. The drip irrigation tape 200 can be wound onto the first reel 182 before cleaning and onto the second reel 184 after cleaning to achieve bundling of the drip irrigation tape 200, which is beneficial for the storage and transportation of the drip irrigation tape 200.

[0034] In such Figure 1 In the illustrated embodiment, both the first reel 182 and the second reel 184 rotate clockwise, thereby releasing the undiluted drip tape 200 through the first reel 182 while simultaneously winding the cleaned drip tape 200 around the second reel 184. Here, power can be provided only to the second reel 184; for example, the second reel 184 can be driven to rotate by a power mechanism, while the first reel 182 may not have a power mechanism. That is, the first reel 182 rotates under the influence of the rotation of the second reel 184, driven by the drip tape 200. Alternatively, both the first reel 182 and the second reel 184 can be equipped with power mechanisms; there are no particular limitations on the number or location of the power mechanisms. The rotation of the first reel 182 and the second reel 184 drives the drip tape 200 forward slowly, controlling the cleaning speed so that the drippers on the drip tape 200 sequentially pass through the cleaning tank 120 for cleaning, and the cleaned drip tape 200 is wound onto the second reel 184.

[0035] The delivery speed of the drip irrigation tape 200 can be controlled by adjusting the rotation speed of the power mechanism, thereby controlling the cleaning speed of the drip irrigation tape 200. For example, for drip irrigation tape 200 that has been used for a long time or has a lot of internal deposits, the forward speed of the drip irrigation tape 200 can be reduced by lowering the rotation speed of the power mechanism, thereby extending the cleaning time of the drip irrigation tape 200 and improving the cleaning effect; correspondingly, for drip irrigation tape 200 that has been used for a short time or is relatively clean, the rotation speed of the power mechanism can be appropriately increased to improve the cleaning speed.

[0036] Here, the upper edges of the first reel 182 and the second reel 184 for releasing and winding the drip irrigation tape 200 are higher than the upper edge of the cleaning tank 120. This allows the drip irrigation tape 200 to be delivered above the opening of the cleaning tank 120, facilitating the positioning of a portion of the drip irrigation tape 200 within the cleaning solution in the cleaning tank 120 by a positioning component. Of course, the first reel 182 and the second reel 184 can also be positioned at the same height as or below the upper edge of the cleaning tank 120, simply by adding specific additional positioning components accordingly.

[0037] The pumping assembly 190 of the ultrasonic cleaning device 100 for drip irrigation tape of the present invention includes a pump 192 for pumping cleaning fluid and a fluid connection assembly 194 that fluidly connects the output port of the pump 192 to the drip irrigation tape 200. Here, the pumping assembly 190 can be connected to the drip irrigation tape 200 at a first reel 182 via the fluid connection assembly 194, thereby enabling the cleaning fluid to be injected into the drip irrigation tape 200 at the first reel 182. Alternatively, the output port of the pumping assembly 190 can also be fluidly connected to the drip irrigation tape 200 at a second reel 184.

[0038] Since the first reel 182 is constantly rotating during the cleaning of the drip irrigation tape 200, and correspondingly, the drip irrigation tape 200 wound on the first reel 182 is also rotating, a rotary connection device is needed to connect the pump 192 to the drip irrigation tape 200. Here, the fluid connection assembly 194 may include a first connecting pipe 1942 fixedly mounted on the first reel 182 and a rotary joint 1944 at the end of the first fluid pipe 1942 that connects to the output port of the pump 192. The first connecting pipe 1942 mounted on the first reel 182 can rotate together with the first reel 182, thereby allowing the port of the drip irrigation tape 200 to be connected to the first connecting pipe 1942 before or after the drip irrigation tape 200 is wound onto the first reel 182. After connection, since the first connecting pipe 1942 rotates synchronously with the first reel 182, a relatively stable connection can be maintained between the two. In order to fill the drip irrigation tape 200 with a relatively clean cleaning solution, a filter 193 can be installed in the pump 192 to filter the cleaning solution entering the pump 192.

[0039] Advantageously, the first connecting conduit 1942 includes a coaxial conduit portion 1945 configured to be coaxial with the rotation axis 1822 of the first reel 182, an offset conduit portion 1946 offset relative to the axis of the rotation axis 1822, and a connecting conduit portion 1947 connecting the coaxial conduit portion 1945 and the offset conduit portion 1946, such as Figure 2 As shown, the biased conduit portion 1946 is connected to the sidewall of the first reel 182, thereby allowing the biased conduit portion 1946 to pass through the sidewall and connect to the drip irrigation tape 200. Here, a through-hole can be provided in the sidewall of the first reel 182, allowing the biased conduit portion 1946 to pass through the through-hole, thereby extending one end of the biased conduit portion 1946 into the interior of the sidewall of the first reel 182, forming a port for connecting to the drip irrigation tape 200. Alternatively, a connection port extending towards the interior of the sidewall can be formed in the sidewall of the first reel 182 for connecting to the drip irrigation tape 200, while the end of the biased conduit portion 1946 is inserted from the outside of the sidewall into the sidewall to achieve fluid communication with the aforementioned connection port. Alternatively, the first connecting pipe 1942 can be directly installed inside the rotating shaft 1822 of the first reel 182, and a rotary joint can be installed at the end of the rotating shaft 1822, thereby realizing the rotary connection between the output port of the pump 192 and the first connecting pipe 1942.

[0040] Since the coaxial tubing section 1945 is coaxial with the rotating shaft 1822 of the first reel 182, when the first reel 182 rotates, the coaxial tubing section 1945 and the rotating shaft 1822 rotate around the same axis. The end of the coaxial tubing section 1945 facing away from the first reel 182 is connected to a rotary joint 1944, so that when the coaxial tubing section 1945 rotates, the pump 192 and its output port do not rotate with the coaxial tubing section 1945, thereby ensuring that the pump 192 can have a relatively fixed installation position.

[0041] As described above, the ultrasonic cleaning device 100 for drip irrigation tape according to the present invention provides a rotary joint between the first connecting pipe 1942 and the pump 192, thereby enabling the pump 192 to fill the drip irrigation tape 200 with cleaning fluid while ensuring that the drip irrigation tape 200 rotates with the first reel 182, so that the drip irrigation tape 200 is always filled with cleaning fluid during the cleaning process, thereby facilitating more parts of the drip irrigation tape to be subjected to ultrasonic cleaning during the entire cleaning process, and correspondingly increasing the ultrasonic cleaning time of the drip irrigation tape 200 to improve the cleaning effect.

[0042] The drip irrigation tape positioning assembly 160 of the ultrasonic cleaning device 100 for drip irrigation tape according to the present invention includes a first rotating roller 162 disposed at the upper edge of a first side of the cleaning tank 120, a second rotating roller 164 disposed at the upper edge of a second side of the cleaning tank 120, and a third rotating roller assembly 166 disposed at the bottom of the cleaning tank 120. The first rotating roller 162 and the second rotating roller 164 ensure that the drip irrigation tape 200 is at a certain distance from the edge of the cleaning tank 120, preventing the drip irrigation tape 200 from contacting or rubbing against the edge of the cleaning tank 120 during the delivery of the cleaning liquid. Figure 1 In the embodiment shown, the first rotating roller 162 and the second rotating roller 164 are respectively inclined toward the interior of the cleaning tank 120, that is, the bracket for supporting the rotating rollers can be inclined on the edge of the cleaning tank 120, so that the drip irrigation tape 200 is away from the edge or side wall of the cleaning tank 120 when it enters the cleaning tank 120.

[0043] A third rotating roller assembly 166, located at the bottom of the cleaning tank 120, is used to position a portion of the drip irrigation tape 200 below the surface of the cleaning liquid, thereby cleaning the drip irrigation tape 200 by ultrasonic vibration. Here, the third rotating roller assembly 166 may include a fourth rotating roller 167 arranged near the first rotating roller 162 in the horizontal direction of the cleaning liquid, and a fifth rotating roller 168 arranged near the second rotating roller 164 in the horizontal direction of the cleaning liquid. The fourth rotating roller 167 and the fifth rotating roller 168 may be configured to have substantially the same height on the planar bottom of the cleaning tank 120, so that the drip irrigation tape 200, extending around and between the fourth rotating roller 167 and the fifth rotating roller 168, is substantially parallel to the planar bottom of the cleaning tank 120. Of course, the orientation of the drip irrigation tape 200 within the cleaning tank 120 is not limited to being parallel to the planar bottom of the cleaning tank 120; it may form any angle with the planar bottom. The third rotating roller assembly 166 is also not limited to including only the fourth rotating roller 167 and the fifth rotating roller 168; it may include any suitable number of rotating rollers.

[0044] Here, in order to prevent the drip irrigation tape 200 from leaving the position of the rotating rollers during transmission by the drip irrigation tape conveying mechanism 180, the diameters of the axial ends 1621 of the first rotating roller 162 and the second rotating roller 164 are set to be larger than the diameter of their axial center 1622, so that the drip irrigation tape 200 is positioned between the axial ends 1621 on both sides when conveyed by the first rotating roller 162 and the second rotating roller 164. Figure 3 and Figure 4 As shown. That is to say, the first rotating roller 162 and the second rotating roller 164 have a structure that is thin in the middle and thick at both ends, so that they can stabilize the position of the drip irrigation tape 200, that is, prevent the drip irrigation tape 200 from falling off the first rotating roller 162 and the second rotating roller 164.

[0045] Furthermore, the first rotating roller 162 and the second rotating roller 164 have a drainage structure 1623 so that when the drip irrigation tape 200 is conveyed by the first rotating roller 162 and the second rotating roller 164, the cleaning liquid in the drip irrigation tape 200 can be discharged through the drainage structure 1623, thereby preventing splashing of the cleaning liquid. The drainage structure 1623 may include a drainage hole provided in the axial end 1621 so that the cleaning liquid discharged by the drip irrigation tape 200 wound on the first rotating roller 162 and the second rotating roller 164 can be discharged through the drainage hole, and the cleaning liquid discharged through the drainage hole can flow directly into the cleaning tank 120.

[0046] Furthermore, in order to recycle the cleaning solution, the ultrasonic cleaning device 100 for drip irrigation tape according to the present invention also includes a cleaning solution collection assembly 110 disposed at the bottom of the cleaning tank 120, such as... Figure 1 As shown. The cleaning fluid collection assembly 110 can be configured as a trough structure, which can be used to house the cleaning trough 120, the drip irrigation tape conveying mechanism 180 and the pumping assembly 190, thereby completely collecting the cleaning fluid leaked from the drip irrigation tape 200 during the conveying and cleaning process, and pumping the collected cleaning fluid into the drip irrigation tape 200 through the pumping assembly 190.

[0047] Here, the cleaning fluid collection assembly 110 may include a return tank 112 for storing the cleaning fluid and a filter screen 114 disposed above the surface of the cleaning fluid in the return tank 112, through which the recovered cleaning fluid is filtered. The pumping pipeline inlet of the pumping assembly 190 is located in the return tank 112, thereby enabling the pump 192 to pump the cleaning fluid collected during the cleaning process of the drip irrigation tape 200 and filtered by the filter screen 114, thereby saving the amount of cleaning fluid used and avoiding waste of the cleaning fluid.

[0048] To test the cleaning effect of the ultrasonic cleaning device 100 for drip irrigation tape on drip irrigation tape and its dripper channels, 200m of used drip irrigation tape was installed on the cleaning device, as shown in the following installation configuration. Figure 1 As shown. The specific installation and cleaning process is as follows:

[0049] First, the entire drip irrigation tape is wound onto the first reel 182. Then, one end of the drip irrigation tape is led out and passed sequentially through the first rotating roller 162, the fourth rotating roller 167, the fifth rotating roller 168, and the second rotating roller 164 of the drip irrigation tape positioning assembly 160. After passing through the cleaning tank 120, it is finally fixed onto the second reel 184. At the same time, the fluid connection assembly 194 of the pumping assembly 190 is connected to the pump 192 and the other end of the drip irrigation tape 200, respectively.

[0050] Add cleaning fluid to the cleaning tank 120. Stop adding the cleaning fluid when it reaches approximately 2 / 3 of the tank's height and let it stand for 30 minutes to allow the cleaning fluid to seep into the drip irrigation tape through the dripper's outlet holes and ensure full contact between the cleaning fluid and the dripper's flow channel. In this embodiment, the cleaning fluid used is a 10% dilute HCl solution.

[0051] Turn on the power to pump 192 to inject cleaning fluid into the drip tape 200 from the first reel 182. Turn on the ultrasonic generator and adjust the ultrasonic cleaning frequency to 26 kHz (other frequencies can also be selected according to cleaning needs). Rotate the second reel 184 clockwise so that the drip tape 200 passes through the cleaning tank 120 under the support of the positioning component 160, moving slowly (at a speed of 1 m / min). The cleaning process ends when all the drip tape 200 on the first reel 182 is wrapped around the second reel 184.

[0052] Five sections of drip irrigation tape were randomly selected, numbered 1-5, before and after cleaning. Each section had five drippers. Water was filled into the drip irrigation tape to expel air and ensure all five sections were filled. The pressure was then gradually increased (approximately 20 seconds) to the rated working pressure (100 kPa) and maintained. Water was collected from each section using a water collector, for example, collecting water from each section within 4 minutes. The water volume in each collector was measured using a graduated cylinder. The flow rate (L / h) of each dripper was calculated, and the outflow time was at least 3 minutes. The water temperature, pressure, outflow time, and outflow rate of each dripper section were recorded. Based on the test results, and in accordance with GB / T 19812.3-2017 "Plastic Water-Saving Irrigation Equipment Part 3: Embedded Drip Irrigation Pipes and Tapes", the values ​​of each drip tape portion in the test were calculated.

[0053] Average flow rate of the dripper The standard deviation S and flow deviation rate C of the dripper's drip orifice flow rate v The calculation results are shown in Table 1 below.

[0054] Table 1 Calculation results of relevant parameters for drip irrigation tape flow uniformity

[0055]

[0056] As shown in Table 1, a comparison reveals that the average flow rate of the drip irrigation tape after ultrasonic cleaning... Compared to before ultrasonic cleaning, the flow rate increased by 0.47 L / h, and the flow deviation rate C vThe number of drip irrigation tapes decreased by 14% after cleaning compared to before cleaning. These statistical results clearly demonstrate that the ultrasonic cleaning device for drip irrigation tapes involved in this invention has a good cleaning effect on drip irrigation tapes and their emitters, and can effectively solve the problem of drip emitter clogging.

[0057] The ultrasonic cleaning device for drip irrigation tape according to the present invention can utilize the cavitation effect generated by ultrasound in the cleaning solution to clean all parts of the drip irrigation tape, regardless of the complex shape of the surface of the part being cleaned. For example, cavities, grooves, slits, deep holes, or micropores on the surface of the part being cleaned can all be thoroughly cleaned, while these parts or components cannot be cleaned by conventional brushing methods. Therefore, no matter how complex the shape of the dripper channel is, as long as it is placed in the cleaning solution, the ultrasonic cleaning action can achieve ultrasonic cleaning of the relevant parts as long as it can contact the cleaning solution. Especially for workpieces with complex shapes and structures that cannot be completely and effectively cleaned manually or by other cleaning methods, ultrasonic cleaning has a significant cleaning effect.

[0058] A pumping assembly 190 is connected to the front end of the drip irrigation tape 200 near the first reel 182 used for its release. During cleaning, the drip irrigation tape 200 is filled with cleaning fluid. A movable joint 1944 is provided between the pump 192 of the pumping assembly 190 and the fluid connection assembly 194, thereby ensuring that the pump 192 and its corresponding output pipe do not rotate with the first reel 182. At the same time, the bubbles generated in the cleaning fluid are very uniform, which can achieve a very ideal cleaning effect on the flow channel of the drip irrigation tape 200.

[0059] Depending on the type of clogging in the drippers of the 200 drip irrigation tape, different solvents can be added to the cleaning tank 120 as the ultrasonic cleaning medium. For example, for drippers with severe chemical precipitation, chloric acid or hydrochloric acid can be used as the cleaning agent. Choosing the right cleaning agent can accelerate the separation and dissolution of contaminants, effectively improving the cleaning effect and increasing cleaning efficiency.

[0060] The residence time (i.e., cleaning time) of the drip irrigation tape 200 in the cleaning tank 120 and its forward conveying speed are controlled by the rotational speeds of the first reel 182 and the second reel 184. Depending on the degree of clogging of the drippers, the cleaning time and cleaning effect can be controlled by adjusting the rotational speeds of the first reel 182 and the second reel 184. This invention controls the sequential passage of each part (each dripper) of the drip irrigation tape 200 through the cleaning tank 120 through the cooperation of the reels and the conveying mechanism. This allows the use of a small-sized cleaning tank, while the length of the drip irrigation tape 200 to be cleaned is not limited (i.e., infinitely long).

[0061] The ultrasonic cleaning device 100 for drip irrigation tape can efficiently clean clogged drip irrigation tape 200, achieving good cleaning results and effectively alleviating clogging problems in the drippers and drip irrigation tape, thus enabling the reuse of the drip irrigation tape. The rotating roller of the drip irrigation tape positioning component has a drainage structure, such as a drainage hole, which effectively prevents splashing of cleaning fluid inside the drip irrigation tape and also lubricates the rotating roller. The rotating roller, located at the upper edge of the cleaning tank 120, is inclined inwards towards the cleaning tank 120, ensuring that some cleaning fluid directly seeps into the cleaning tank 120. Furthermore, the ultrasonic cleaning device for drip irrigation tape of this invention also includes a cleaning fluid collection component 110 at the bottom of the cleaning tank 120 and the conveying mechanism 180, mainly used for recycling and reusing the cleaning fluid, thereby saving cleaning fluid consumption and reducing cleaning costs.

[0062] Regarding the embodiments of the present invention, it should also be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0063] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ultrasonic cleaning device for drip irrigation tape, characterized in that, The cleaning device includes: A cleaning tank containing a cleaning solution; An ultrasonic generator is disposed in the cleaning tank and is used to generate ultrasonic vibrations in the cleaning solution. A drip irrigation tape positioning assembly is used to position the drip irrigation tape in the cleaning tank so that the cleaning liquid can immerse a portion of the drip irrigation tape placed in the cleaning tank. A drip irrigation tape conveying mechanism is used to convey the drip irrigation tape through the cleaning tank; The ultrasonic cleaning device for drip irrigation tape also includes a pumping component for injecting cleaning fluid into the drip irrigation tape during the ultrasonic cleaning process. The drip irrigation tape conveying mechanism includes a first reel disposed on a first side of the cleaning tank and a second reel disposed on a second side of the cleaning tank. Unwashed drip irrigation tape located on the first reel is conveyed through the cleaning tank via the drip irrigation tape conveying mechanism, and the washed drip irrigation tape is wound onto the second reel. The pumping assembly includes a pump for pumping cleaning fluid and a fluid connection assembly that fluidly connects the outlet of the pump to the drip irrigation tape. The fluid connection assembly includes a first connecting pipe fixedly disposed on the first reel and a rotary joint disposed at the end of the first connecting pipe that connects to the output port of the pump.

2. The ultrasonic cleaning device for drip irrigation tape according to claim 1, characterized in that, The first connecting conduit includes a coaxial conduit portion configured to be coaxial with the rotation axis of the first reel, an offset conduit portion offset relative to the axis of the rotation axis, and a connecting conduit portion connecting the coaxial conduit portion and the offset conduit portion. The offset conduit portion is connected to the side wall of the first reel, thereby enabling the offset conduit portion to pass through the side wall and connect to the drip irrigation tape.

3. The ultrasonic cleaning device for drip irrigation tape according to claim 1, characterized in that, The drip irrigation tape positioning assembly includes a first rotating roller disposed at the upper edge of the first side of the cleaning tank, a second rotating roller disposed at the upper edge of the second side of the cleaning tank, and a third rotating roller assembly disposed at the bottom of the cleaning tank.

4. The ultrasonic cleaning device for drip irrigation tape according to claim 3, characterized in that, The third rotating roller assembly includes a fourth rotating roller arranged close to the first rotating roller in the horizontal direction of the cleaning liquid, and a fifth rotating roller arranged close to the second rotating roller in the horizontal direction of the cleaning liquid.

5. The ultrasonic cleaning device for drip irrigation tape according to claim 3, characterized in that, The diameters of the axial ends of the first and second rotating rollers are greater than the diameter of the axial center, so that the drip tape is located between the axial ends when it is conveyed through the first and second rotating rollers.

6. The ultrasonic cleaning device for drip irrigation tape according to claim 5, characterized in that, The first rotating roller and the second rotating roller have a drainage structure so that the cleaning liquid in the drip irrigation tape can be discharged through the drainage structure when the drip irrigation tape is conveyed by the first rotating roller and the second rotating roller.

7. The ultrasonic cleaning device for drip irrigation tape according to claim 6, characterized in that, The drainage structure includes a drainage hole disposed in the axial end, so that the cleaning liquid discharged by the drip irrigation tape wound on the first rotating roller and the second rotating roller can be discharged through the drainage hole.

8. The ultrasonic cleaning device for drip irrigation tape according to claim 1, characterized in that, The cleaning device also includes a cleaning fluid collection assembly located at the bottom of the cleaning tank.

9. The ultrasonic cleaning device for drip irrigation tape according to claim 8, characterized in that, The cleaning fluid collection assembly includes a return tank for storing the cleaning fluid and a filter screen disposed above the surface of the cleaning fluid in the return tank. The filter screen is used to filter the cleaning fluid flowing into the return tank. The pumping pipeline inlet of the pumping assembly is located in the return tank.

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