Self-adaptive water and fertilizer supply device and water and fertilizer supply system

Abstract

The utility model aims to provide a self-adaptive water and fertilizer supply device and a water and fertilizer supply system aiming at the defects that when water, nutrients or medicaments are supplemented for trees in the prior art, hanging bags are adopted to supply liquid, and the hanging bags need to be replaced frequently, so that the workload of employees is large, and the efficiency is low. Comprising an outer shell used for storing liquid and a liquid level control valve used for controlling the liquid level in the outer shell, the liquid level control valve is located in the outer shell, and an outer shell liquid outlet is formed in the outer shell and used for being communicated with an external pipeline. By adopting the self-adaptive water and fertilizer supply device and the water and fertilizer supply system, the workload of arranging hanging bags and the like and the inspection workload of employees are greatly reduced, the labor efficiency is improved, the labor cost is reduced, and environmental pollution is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of tree liquid replenishing devices, in particular to a water and fertilizer supply device and a water and fertilizer supply system for replenishing water, liquid fertilizer or medicine for trees. Background Art

[0002] When using a needle to replenish water, nutrient solution or fertilizer to trees, the liquid needs to be placed in a hanging bag, which supplies the liquid to an infusion pump, and the needle of the infusion pump is inserted into the tree to deliver the liquid substance to the tree. When using this type of hanging bag to replenish liquid to trees, the hanging bag needs to be hung on the tree, and the liquid needs to be prepared in advance and poured into the hanging bag. Personnel need to conduct regular inspections to prevent the hanging bag from being empty of liquid. When the hanging bag is empty, the hanging bag needs to be replaced, or when other types of liquids need to be replenished, the hanging bag also needs to be replaced. Trees are planted in large areas, and some are planted in the mountains, which results in a large workload and low work efficiency for personnel. The hanging bags are usually made of plastic and are generally disposable, resulting in a large number of hanging bags being used and discarded, causing environmental pollution. Utility Model Content

[0003] The utility model aims to provide an adaptive water and fertilizer supplier and a water and fertilizer supply system in view of the shortcomings of the prior art that when replenishing water, nutrients or medicines for trees, liquid is supplied by hanging bags, and the hanging bags need to be replaced frequently, resulting in heavy workload and low efficiency for practitioners.

[0004] The technical solution of the utility model to solve the technical problem is as follows:

[0005] An adaptive water and fertilizer supplier comprises a shell for storing liquid and a liquid level control valve for controlling the liquid level in the shell, wherein the liquid level control valve is located in the shell, and a shell liquid outlet is provided on the shell for communicating with an external pipeline, and a liquid inlet of the liquid level control valve is communicated with an external high-pressure water inlet pipe, and the liquid outlet of the liquid level control valve is located in the shell, and the liquid level in the shell is controlled by the liquid level control valve, and when the liquid level reaches the highest position, the liquid level control valve closes the passage between the liquid outlet of the control valve and the liquid inlet of the control valve, and when the liquid level reaches the lowest position, the liquid level control valve opens the passage between the liquid outlet of the control valve and the liquid inlet of the control valve;

[0006] The liquid level control valve comprises a valve body, a valve core, a support plate and a float limit device. The valve body is provided with an inlet channel and a water outlet channel. The inlet channel is connected to the liquid inlet of the control valve, and the water outlet channel is connected to the liquid outlet of the control valve. The liquid inlet of the liquid level control valve is connected to the external high-pressure water inlet pipe, and the liquid outlet of the control valve is connected to the inner cavity of the shell to supply water to the inner cavity of the shell. The valve core is located in the valve body so that the inlet channel and the water outlet channel can be switched between connection and disconnection. The support plate is used to close the lower opening of the valve core hole of the valve body. A valve body drain hole is provided on the support plate to connect the valve core hole with the inner cavity of the shell. The float limit device comprises a float limit plate and a float. The float is hingedly connected to the bottom of one end of the float limit plate, and the other end of the float limit plate is hingedly connected to the support plate. A plug is provided between the position where the limit plate is hinged with the support plate and the float, near the hinge position where the float limit plate and the support plate are hinged. When the float pushes the float limit plate to reach the highest design liquid level, the plug is separated from the valve body drain hole. An upwardly bent limit short plate 1 is provided at one end of the float limit plate on the same side as the support plate hinge position, and a downwardly bent limit short plate 2 is provided at one end of the float limit plate on the same side as the float hinge position. The limit short plate 1 is contacted and connected with the outer peripheral wall of the valve body, and the limit short plate 2 is contacted and connected with the outer peripheral wall of the float. When the plug is closed, the valve core cuts off the water inlet channel and the water outlet channel. When the plug is separated from the valve body drain hole, the valve core withdraws from the closed position to connect the water inlet channel and the water outlet channel.

[0007] The valve core hole comprises an upper portion of the valve core hole and a lower portion of the valve core hole, the valve core comprises a valve core body, an elastic diaphragm and a compression spring, the valve core body is divided into an upper portion of the valve core body and a lower portion of the valve core body, the outer peripheral wall of the upper portion of the valve core body is conical, and the lower portion of the valve core body is straight cylindrical, and the connection between the lower portion of the valve core body and the upper portion of the valve core body has an annular flat shoulder, an annular groove is arranged on the outer peripheral wall at the intersection of the upper portion of the valve core body and the lower portion of the valve core body, and an annular wall is arranged on the upper surface of the support plate, the valve body drain hole is located within the range surrounded by the annular wall, the mold piece has a central through hole and is sealedly connected to the upper outer peripheral wall of the valve core body through the central through hole in the annular groove, the diaphragm is fixedly arranged on the valve body through the annular wall, the upper portion of the valve core body is located in the upper portion of the valve core hole, and the lower portion of the valve core body is located in the lower portion of the valve core hole, the diaphragm separates the upper portion of the valve core hole and the lower portion of the valve core hole into two parts that are not connected to each other, and the water inlet channel and the water outlet channel are connected through the upper portion of the valve core hole The diaphragm and the valve core body are connected, and a water inlet hole is arranged at a relative position on the diaphragm and the valve core body, and the lower part of the valve core hole is connected with the water inlet channel through the water inlet hole. The compression spring is located in the lower part of the valve core hole, and the upper and lower ends are respectively connected to the upper part of the valve core body and the supporting plate, and the supporting plate closes the lower opening of the lower part of the valve core hole. The diaphragm, the valve core body and the supporting plate constitute a water storage chamber of the valve core, and the water inlet speed of the water inlet hole is less than the drainage speed of the valve body drainage hole. When the plugging closes the valve body drainage hole, the high-pressure water entering the water inlet channel enters the water storage chamber through the water inlet hole. When the water storage chamber is full, the valve core body moves upward in the upper part of the valve core hole under the tension of the compression spring and is sealed and connected with the upper part of the valve core hole, closing the water inlet channel and the water outlet channel. When the plugging is separated from the valve body drainage hole, the water in the water storage chamber reduces and loses pressure on the diaphragm. Under the action of the high-pressure water, the diaphragm extends downward and pushes the valve core body downward to separate the upper part of the valve core body from the upper part of the valve core hole, so that the water inlet channel and the water outlet channel are connected, and water is supplied to the shell.

[0008] A convex edge convex outward is provided at the open end of the lower part of the valve core body, the diaphragm has a cavity 1 opening downward, a cavity 2 opening upward is provided around the cavity 1, and a cavity 3 opening downward is provided around the cavity 2, and the diaphragm is connected with the outer wall of the lower part of the valve core body through the inner wall of the cavity 1, the convex edge supports the bottom of the cavity 2, the annular wall of the support plate is located in the cavity 3 and fixes the diaphragm in the lower opening groove provided on the valve body through the cavity 3, and there is a distance between the convex edge and the outer side of the annular wall;

[0009] The tail end of the compression spring is vertically arranged and passes through the diaphragm and the valve core body; or at least two mushroom-shaped connectors are arranged at the flat shoulder of the valve core body, the diaphragm and the valve core body are fixedly connected through the mushroom-shaped connectors, the water inlet hole is arranged in the mushroom-shaped connectors, and the tail end of the compression spring is vertically arranged and movably connected to the water inlet hole;

[0010] The shell is closed, and a shell air hole is provided on the upper part of the shell for the inner cavity of the shell to communicate with the external atmosphere; or the liquid inlet of the control valve is located outside the shell, and the shell is sealed and connected to the water inlet channel end of the valve body;

[0011] The first air hole of the shell is provided with a tubular air hole protection sleeve, which is intersected and fixedly connected with the shell, and the second air hole of the shell is provided at the upper end of the air hole protection sleeve, and a protective cover is provided outside the second air hole of the shell to cover the second air hole of the shell.

[0012] An adaptive water and fertilizer supply system comprises an infusion needle and an infusion pipeline connecting the infusion needle and the adaptive water and fertilizer supplier, and adopts the above-mentioned adaptive water and fertilizer supplier, wherein the infusion pipeline connects the liquid inlet end of the infusion needle and the liquid outlet of the housing of the adaptive water and fertilizer supplier;

[0013] The invention comprises at least two infusion needles, each of which is connected to the self-adaptive water-fertilizer supplier through an infusion pipeline to absorb the liquid therein.

[0014] The advantages and beneficial effects of the utility model are:

[0015] The adaptive water-fertilizer supplier adopts the structure of the utility model, and controls whether the external high-pressure liquid enters the shell according to the water level in the shell through the liquid level control valve arranged in the shell, so that a certain amount of water is maintained in the shell, which neither causes excessive water in the shell to overflow, nor ensures that a certain amount of water is always stored in the shell to provide to the trees, thereby realizing automatic liquid replenishment according to the needs of the trees, and realizing adaptive liquid supply without manual care and checking of the water level. Therefore, the number of inspections and bag changing work of employees can be reduced, thereby reducing labor intensity and improving labor efficiency.

[0016] The adaptive water and fertilizer supply system adopts the structure of the utility model. One adaptive water and fertilizer supply device can be connected to multiple infusion needles to supply liquid to a group of trees. There is no need to use hanging bags. Liquid can be automatically supplied to the sap needles, which greatly reduces the workload of practitioners in setting up hanging bags and patrol workload, improves labor efficiency, reduces labor costs, and does not cause environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model adaptive water and fertilizer supplier;

[0018] Figure 2 for Figure 1 Schematic diagram of DD cross-sectional structure;

[0019] Figure 3 for Figure 1 A schematic top view of

[0020] Figure 4This is a schematic diagram of the structure of an embodiment of the liquid level control valve of the utility model;

[0021] Figure 5 yes Figure 4 AA cross-sectional structural diagram;

[0022] Figure 6 yes Figure 4 Schematic diagram after rotating 90 degrees;

[0023] Figure 7 yes Figure 6 BB cross-sectional structure diagram;

[0024] Figure 8 yes Figure 7 A schematic diagram of the structure of the embodiment of the central core body with the water inlet and outlet channels opened, where FF is a line indicating the direction of no flow;

[0025] Fig. 9 It is a schematic diagram of the front view of the structure of the floating ball limiting plate embodiment;

[0026] Fig.10 for Fig. 9 CC section view;

[0027] Fig.11 for Fig. 9 Schematic top view of .

[0028] Description of Reference Numerals

[0029] 200-liquid level control valve 220-valve body 221-filter screen 222-control valve liquid inlet 223-control valve liquid outlet 224-water inlet channel 225-water outlet channel 226-enclosing wall 227-valve core hole 2271-upper part of valve core hole 2272-lower part of valve core hole 228-cover top inlay groove

[0030] 240-valve core 241-valve core body 2411-upper part of valve core body 2412-lower part of valve core body 2413-annular groove 2414-convex edge 242-diaphragm 2421-cover top 2422-cover wall 2423-cavity one 2424-cavity two 2425-cavity three 2426-cover top edge 2427-mushroom-shaped connector 243-spring 260-support plate 261-valve body drainage hole 262-support plate connecting hole 263-annular wall 264-connecting plate 270-floating ball limit device 271-floating ball limit plate 272-blocking 273-limiting plate connecting shaft 274-limiting short plate one 275-limiting short plate two 276-connecting hole 277-floating ball

[0031] 300-shell 301-pore protective cover 302-shell pore 1 303-shell liquid outlet 304-protective cover 305-shell pore 2 DETAILED DESCRIPTION

[0032] The present invention is further described in detail below through specific embodiments, which are only illustrative and not restrictive, and cannot be used to limit the scope of protection of the present invention. For the convenience of description, the positional relationship between the components is described according to the normal use position of the system.

[0033] In the present invention, water fertilizer is a general term for water, liquid fertilizer, and liquid medicine, and can refer to one liquid or more than two liquids.

[0034] like Figure 1-Figure 5 As shown, the adaptive water and fertilizer supply system of the embodiment of the utility model includes a water and fertilizer supply device, an infusion needle and an infusion pipeline for directly delivering liquid to trees. The liquid inlet end of the infusion needle is connected to the liquid outlet of the water and fertilizer supply device through the infusion pipeline. In the utility model, one water and fertilizer supply device can deliver liquid to multiple water and fertilizer infusion needles.

[0035] The utility model of the water fertilizer supply device comprises a shell 300 as a liquid storage tank and a liquid level control valve 200 for controlling the liquid level in the shell, and the liquid level control valve is located in the shell. Figure 2As shown, a shell pore 1 302 is provided at the upper part of the shell, preferably at the top position. In order to prevent mosquitoes, dust, etc. from entering the shell, the shell pore 1 is provided as a plurality of small pores. A pore protective sleeve 301 is provided outside the shell pore 1. The pore protective sleeve is tubular and intersecting with the shell. Shell pores are also provided on the outer wall of the pore protective sleeve, called shell pore 2 305. A protective sleeve cover 304 is provided at the top position of the pore protective sleeve. The protective sleeve cover has a cover top, which is used to close the top opening of the pore protective sleeve, and also includes a cover wall. The height of the cover wall can cover the shell pore 2 on the pore protective sleeve. In this way, the inner cavity of the shell can be connected with the outside atmosphere, and mosquitoes, dust, impurities, etc. can be well prevented from entering the shell, so that the liquid in the shell is kept clean and the clogging of the liquid outlet and the needle hole of the infusion needle is prevented. The pores of the shell of the utility model adopt a double-layer pore structure. When the second pore of the shell located on the pore protection cover is damaged or corroded, the second layer of pores located on the shell body, that is, the second pore of the shell, can still perform its function, thereby extending the service life of the shell. The lower part of the shell is preferably provided with a shell liquid outlet 303 at the bottom of the shell for connection with the infusion pipeline. The upper part of the shell is preferably provided with an opening at the top for the pipeline to enter and exit. In the utility model, the shell has two main functions. One is to store liquid and provide liquid to the infusion needle. The other main function is to protect the liquid level control valve located therein. It can prevent damage or corrosion to the internal components by external physical impact, dust, etc., thereby extending the service life of the overall device and providing a stable working environment.

[0036] In this practical type, the liquid level control valve can adopt an electronic control valve or a float type water level control valve. The advantage of adopting a float type water level control valve is that the water control is completed only by mechanical components, without the need to connect to electricity or use batteries. It is particularly suitable for places with inconvenient power supply such as large areas of forests. When a float type water level control valve is adopted, the liquid inlet of the float type water level control valve is connected to the external high-pressure liquid, the liquid outlet of the control valve is located in the outer shell, and its float is located in the liquid in the outer shell or floats on the liquid. The lower part of the outer shell is provided with an outer shell outlet to supply fertilizer water from the outside. When the water level rises to the set height, the liquid level control valve closes and stops supplying water to the outer shell. When the water level is lower than the set height, the liquid level control valve opens to supply water to the outer shell to ensure that the water in the outer shell is within the required range. Figure 4-Figure 7As shown, it is best to use the following structure of the liquid level control valve 200, which includes a valve body 220, a valve core 240, a support plate 260, and a float stopper 270. An inlet channel 224 and an outlet channel 225 are provided in the valve body, and the valve core 240 closes the connection between the inlet channel 224 and the outlet channel 225 on the valve body 220. The float stopper 270 senses the height of the liquid in the shell, so that the position between the valve core and the valve body changes to make the control valve open or close the inlet channel on the valve body. In this technical solution, a control valve liquid inlet 222 is provided at the upper end of the valve body, the water inlet channel 224 is located at the lower part of the valve body and is connected to the control valve liquid inlet 222, the water outlet channel 225 is provided at the lower part of the valve body, and a control valve liquid outlet 223 is provided on the water outlet channel to communicate with the inner cavity of the shell. A valve core hole 227 for accommodating the valve core is also provided at the lower part of the valve body, and the water inlet channel and the water outlet channel are connected through the valve core hole. The valve core hole preferably includes an upper valve core hole portion 2271 and a lower valve core hole portion 2272, and the upper valve core hole portion is connected to the water outlet channel 225. The water inlet channel and the water outlet channel are connected through the valve core hole. The valve core preferably includes a valve core body 241, a diaphragm 242, and a spring 243. The valve core body includes an upper valve core body portion 2411 and a lower valve core body portion 2412. The outer wall of the upper valve core body portion 2411 is conical, and an annular groove 2413 is provided along the circumference of its outer wall. The lower valve core body portion is straight-cylindrical, and an outwardly protruding convex edge 2414 is provided at the lower end of the straight-cylindrical. The upper valve core body portion is located in the upper valve core hole portion and is sealed and connected with the upper valve core hole portion. The lower valve core body portion is located in the lower valve core hole portion. There is a gap between the convex edge 2414 of the lower valve core body portion and the inner wall of the lower valve core hole portion. The diaphragm separates the upper valve core hole portion and the lower valve core hole portion into two parts that are not connected to each other. It is preferred that at least two mushroom-shaped connectors 2427 are provided at the top of the lower part of the valve core body, a matching hole is provided on the diaphragm, the diaphragm is sleeved on the mushroom-shaped connector handle through the matching hole, and the diaphragm is fixed on the valve core body so that the two are connected as one. Water inlet holes (not shown in the figure) are provided at the top of the lower part of the valve core body and the diaphragm at a position opposite to the water inlet channel, the top of the lower part of the valve core body and the water inlet holes of the diaphragm are connected, preferably arranged oppositely, and the water inlet channel is connected to the inner cavity of the lower part of the valve core hole through the valve body drainage hole. The support plate 260 includes a plate body, an annular wall 263 is provided on one side of the plate body, a valve body drainage hole 261 is provided within the range of the annular wall of the support plate, and the valve body drainage hole 261 communicates with both sides of the plate body, and a connecting structure is provided on the side of the support plate opposite to the annular wall, the connecting structure includes two oppositely arranged connecting plates, and the connecting plates are arranged near the edge of the support plate. A connecting hole is provided on the support plate outside the annular wall for fixing the support plate. The annular wall is arranged in the valve core hole, and the support plate closes the lower end opening of the lower part of the valve core hole and is fixedly connected to the valve body through the connecting hole and bolts. Figure 5 and Figure 7As shown, the diaphragm 242 is a special-shaped component, which is in the shape of a cover as a whole, including a cover top 2421 and an annular cover wall 2422 arranged on one side of the cover top. The cover top is concave along its edge so that the diaphragm constitutes a structure with three cavities. Cavity 1 2423 is a central cavity, and the inner surface of its side wall is adapted to the shape and size of the outer wall of the lower part of the valve core body. The diaphragm is connected with the lower part of the valve core body through the side wall of the central cavity. Cavity 2 2424 is an annular groove formed by the concave cover top, and cavity 2 is supported by the convex edge. Cavity 3 2425 is an annular groove with an opening downward formed at the edge of the top of the cover after the top of the cover is concave. The top of the cover at the concave part is called the top edge 2426. The annular wall 263 of the support plate is inserted into the cavity 3 2425 through its top and connected with the cavity 3 in an inserting manner. A top inlay groove 228 for accommodating the top edge of the cover is provided on the side wall of the valve body. The top inlay groove is an annular groove with an opening downward. The top edge 2426 of the diaphragm is arranged in the top inlay groove of the valve body and is inserted and fixed through the annular wall of the support plate. A center hole is provided at the top of the top of the cover of the valve core diaphragm and the valve core, and the center hole is inserted into the annular groove 2413 arranged circumferentially on the outer wall of the valve core and is sealed and matched. The spring 243 is located in the lower part 2272 of the valve core hole. The spring 243 is located between the support plate and the valve core and is in contact connection or fixed connection with the two. Preferably, the tail end of the spring is vertically arranged and passes through the valve core body and the diaphragm, so that when the valve core body descends, it can guide the valve core body and the diaphragm. Preferably, the tail end of the spring passes through the water inlet hole, and preferably a through hole is provided on one of the mushroom-shaped connectors as the water inlet hole, and the tail end of the spring is arranged in the water inlet hole.

[0037] like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, in the present technical solution, the preferred float stop device 270 includes a float stop plate 271 and a float 277. One end of the float stop plate close to the valve body drain hole 261 is rotatably connected to the connection plate 241 provided below the support plate through the stop plate connection shaft 273. The float stop plate is located directly below the valve body drain hole. A plug 272 is provided at the position of the float stop plate corresponding to the valve body drain hole. A float is hingedly provided at one end of the float stop plate away from the stop plate connection shaft. When the float rises, it drives the float stop plate to rotate around the stop plate connection shaft. When it rises to a certain height, the plug closes the valve body drain hole, so that the diaphragm, the lower part of the valve core hole and the support plate form a water storage chamber. The two ends of the float limit plate are respectively provided with limit short plates, and the limit short plates at both ends are 60-90 degrees with the float limit plate. The limit short plate close to one end of the limit plate connection axis is called limit short plate 1, which is bent toward the valve core body, and the limit short plate away from one end of the limit plate connection axis is called limit short plate 2, which is bent toward the float. The limit short plate 1 is in contact with the outer wall of the support plate, and the limit short plate 2 is in contact with the outer wall of the float, which limits the rotation angle of the float relative to the float limit plate, and prevents the float from flipping at a large angle and losing the function of controlling the water level. The connection position of the float limit plate and the support plate is close to the plug, which is located between the connection between the float limit plate and the support plate and the connection with the float, and the float limit plate constitutes a lever structure. When the float limit plate reaches the horizontal position, the plug completely closes the valve body drain hole. When the inclination of the float limit plate reaches a predetermined angle, the plug is separated from the valve body drain hole, and the valve body drain hole is fully opened.

[0038] It is best to set a filter screen 221 at the liquid inlet of the control valve to filter the water entering the valve body. The upper end of the control valve body extends out of the opening for the pipeline to enter and exit the outer shell, and is sealed and connected to the outer shell opening. In this way, the liquid inlet of the control valve is located outside the outer shell, which is convenient for connecting with the pipeline. Of course, the opening of the liquid inlet of the control valve can also be flush with the top of the outer shell or located inside the outer shell. The drainage speed of the valve body drain hole is greater than the water inlet speed of the water inlet hole set on the diaphragm and the valve core.

[0039] The working principle of the utility model is as follows: when the liquid level control valve is opened, high-pressure liquids such as water and fertilizer enter the valve body after being filtered through the filter installed at the liquid inlet of the control valve, and enter the outer shell through the water inlet channel, the water outlet channel and the liquid outlet of the control valve. As the liquid level in the outer shell rises, the end of the float limit plate connected to the float is gradually lifted up by the float, and after rising to a certain height, it blocks and closes the drain hole of the valve body, cutting off the connection between the water storage chamber and the outer shell. Since the water storage chamber is connected to the water inlet channel through the water inlet hole arranged on the diaphragm and the valve core, the water in the water storage chamber is full. Therefore, the water pressure on the upper and lower sides of the diaphragm is equal. Under the action of the spring, the diaphragm and the valve core move upward, close the water inlet channel and the water outlet channel, and no longer supply liquid to the outer shell, that is, the liquid in the outer shell reaches the highest level. At this time, since the water inlet channel and the water outlet channel in the valve body are closed by the valve core, the water in the water inlet channel becomes high-pressure water under the action of the water inlet pressure. As the trees absorb liquids such as water, fertilizer, etc., the liquid level in the shell drops, and the float drops with the drop in the liquid level, driving the end of the float limit plate connected to the float to also move downward. When the float limit plate drops to a certain height, the seal on the float limit plate separates from the valve body drain hole on the support plate, the valve body drain hole is opened, and the water storage chamber formed by the valve core and the support plate is connected to the inner cavity of the shell to drain water into the shell. Since the drainage speed of the valve body drain hole is greater than the water inlet speed of the water inlet hole, the water level in the water storage chamber drops and loses pressure on the diaphragm. Since the pressure of the high-pressure liquid is greater than the tension of the spring, the diaphragm is pressed down and deformed under the action of the high-pressure liquid pressure. Since the diaphragm is elastic, the diaphragm drives the valve core to drop. At the same time, the spring is compressed and the valve core moves downward, the liquid inlet channel and the liquid outlet channel are opened, and the channel for supplying water and fertilizer to the shell is opened. As the liquid enters the shell, the liquid level in the shell rises, and the float pushes the lower end of the float limit plate, which is the end connected to the float, to rise. When the liquid level reaches a certain height, the seal on the float limit plate blocks the drain hole of the valve body again, and the water storage cavity is re-formed. The liquid enters the water storage cavity from the water inlet hole set on the diaphragm and the valve core, causing the water level in the water storage cavity to rise. At the same time, the pressure of the water in the water storage cavity is equal to the pressure of the water above the diaphragm, both of which are high pressure. Under the action of the tension of the compression spring, the valve core returns to its position upward, blocking the water inlet channel and the water outlet channel, and closing the supply of water fertilizer. In the technical solution of this patent, due to the action of the float, the liquid level is always below the float limit plate, and the drain hole of the valve body is always in a gas environment and will not be submerged in liquid. As the liquid in the shell is used, the liquid level in the shell drops, and the height of the float drops, driving the end of the float limit plate connected to the float to drop synchronously. When it drops to a certain height, the blockage separates from the drain hole of the valve body, and the water storage chamber is connected to the inner cavity of the shell, causing the water level in the water storage chamber to drop and lose pressure on the diaphragm, and the next water supply to the shell begins.The purpose of setting the limiting short plate 1 and the limiting short plate 2 is to prevent the posture of the float from changing greatly after the water level drops, so that its position changes greatly, causing the float limiting device to lose its limiting function and lose control of the water level, so that the shell is filled with liquid and loses the function of regulating the water level. Since the float and the float limiting plate are hingedly connected, when the float drops, it swings along the hinge axis under the action of the buoyancy of the liquid, making the position of the float uncertain. When the limiting short plate 1 and the limiting short plate 2 are set, the limiting short plate 2 limits the position of the float, and the limiting short plate 1 limits the inclination angle of the float limiting plate, so that the float can be prevented from turning over greatly and the limiting function of the float limiting device can be maintained. With this structure, the posture of the float is maintained by relying on the mutual position limiting effect between the limiting short plates set at both ends of the float limiting plate and the support plate and the float, so that the float is in a stable posture, so the structure is simple, reliable to use, and not easy to damage.

[0040] The float can control the liquid level in the water and fertilizer supply device according to the change of liquid level through the buoyancy. When the liquid level drops, the float will sink, loosen the plugging of the float limit plate, and start the water and fertilizer supply. When the liquid level rises, the float will float up, triggering the plugging of the float limit plate to block the drain hole of the valve body, and stop the water and fertilizer supply. Through the rise and fall of the float, the liquid level can be accurately controlled to ensure that the liquid level in the supply device is stable within the set range.

[0041] When in use, the liquid outlet of the shell is connected to the infusion needle through a connecting pipe, and multiple infusion needles can be connected through the connecting pipe. The infusion needle is inserted into the tree, and nutrient solution, medicine or pure water is added into the shell according to the needs of the tree for the tree to absorb. Since the water and fertilizer supply device in the utility model automatically replenishes liquid through the control of the liquid level control valve, it can be used with multiple infusion needles, and it is only necessary to mix the required medicine or fertilizer into the high-pressure liquid. Compared with the infusion bag of the prior art, there is no need to frequently replace the infusion bag because the liquid supply is long-term. Therefore, it can replace watering, which greatly reduces the workload of practitioners and improves labor efficiency. It is particularly suitable for irrigation and fertilization in arid and rainless areas.

Claims

1. An adaptive water and fertilizer supplier, characterized in that: The invention comprises a shell for storing liquid and a liquid level control valve for controlling the liquid level in the shell. The liquid level control valve is located in the shell. A shell liquid outlet is arranged on the shell for communicating with an external pipeline. A liquid inlet of the liquid level control valve is communicated with an external high-pressure water inlet pipe. The liquid outlet of the liquid level control valve is located in the shell. The liquid level in the shell is controlled by the liquid level control valve. When the liquid level reaches the highest position, the liquid level control valve closes the passage between the liquid outlet of the control valve and the liquid inlet of the control valve. When the liquid level reaches the low position, the liquid level control valve opens the passage between the liquid outlet of the control valve and the liquid inlet of the control valve.

2. The adaptive water and fertilizer supplier according to claim 1, characterized in that: The liquid level control valve comprises a valve body, a valve core, a support plate and a float limit device. The valve body is provided with an inlet channel and a water outlet channel. The inlet channel is connected to the liquid inlet of the control valve, and the water outlet channel is connected to the liquid outlet of the control valve. The liquid inlet of the liquid level control valve is connected to the external high-pressure water inlet pipe, and the liquid outlet of the control valve is connected to the inner cavity of the shell to supply water to the inner cavity of the shell. The valve core is located in the valve body so that the inlet channel and the water outlet channel can be switched between connection and disconnection. The support plate is used to close the lower opening of the valve core hole of the valve body. A valve body drain hole is provided on the support plate to connect the valve core hole with the inner cavity of the shell. The float limit device comprises a float limit plate and a float. The float is hingedly connected to the bottom of one end of the float limit plate, and the other end of the float limit plate is hingedly connected to the support plate. A seal is provided between the position where the limit plate is hinged with the support plate and the float, near the hinge position where the float limit plate and the support plate are hinged. When the float pushes the float limit plate to reach the highest design liquid level, the seal is separated from the valve body drain hole. An upwardly bent limit short plate 1 is provided at one end of the float limit plate on the same side as the support plate hinge position, and a downwardly bent limit short plate 2 is provided at one end of the float limit plate on the same side as the float hinge position. The limit short plate 1 is in contact with and connected to the outer peripheral wall of the valve body, and the limit short plate 2 is in contact with and connected to the outer peripheral wall of the float. When the seal is applied to close the drain hole of the valve body, the valve core cuts off the water inlet channel and the water outlet channel. When the seal is separated from the valve body drain hole, the valve core withdraws from the closed position to connect the water inlet channel and the water outlet channel.

3. The adaptive water and fertilizer supplier according to claim 2, characterized in that: The valve core hole comprises an upper portion of the valve core hole and a lower portion of the valve core hole, the valve core comprises a valve core body, an elastic diaphragm and a compression spring, the valve core body is divided into an upper portion of the valve core body and a lower portion of the valve core body, the outer peripheral wall of the upper portion of the valve core body is conical, the lower portion of the valve core body is straight cylindrical, the connection between the lower portion of the valve core body and the upper portion of the valve core body is provided with an annular flat shoulder, an annular groove is provided on the outer peripheral wall at the intersection of the upper portion of the valve core body and the lower portion of the valve core body, an annular wall is provided on the upper surface of the support plate, the valve body drain hole is located within the range surrounded by the annular wall, the diaphragm has a central through hole and is sealed and connected to the upper outer peripheral wall of the valve core body through the central through hole in the annular groove, the diaphragm is fixedly arranged on the valve body through the annular wall, the upper portion of the valve core body is located in the upper portion of the valve core hole, the lower portion of the valve core body is located in the lower portion of the valve core hole, the diaphragm separates the upper portion of the valve core hole and the lower portion of the valve core hole into two parts that are not connected to each other, and the water inlet channel and the water outlet channel pass through the valve core hole. The upper part is connected, and a water inlet hole is arranged at a relative position on the diaphragm and the valve core body, and the lower part of the valve core hole is connected with the water inlet channel through the water inlet hole, the compression spring is located in the lower part of the valve core hole, and the upper and lower ends are respectively connected to the upper part of the valve core body and the supporting plate, and the supporting plate closes the lower opening of the lower part of the valve core hole, the diaphragm, the valve core body and the supporting plate constitute a water storage chamber of the valve core, and the water inlet speed of the water inlet hole is less than the drainage speed of the valve body drainage hole. When the plugging closes the valve body drainage hole, the high-pressure water entering the water inlet channel enters the water storage chamber through the water inlet hole. When the water storage chamber is full, the valve core body moves upward in the upper part of the valve core hole under the tension of the compression spring and is sealed and connected with the upper part of the valve core hole, closing the water inlet channel and the water outlet channel. When the plugging is separated from the valve body drainage hole, the water in the water storage chamber reduces and loses pressure on the diaphragm, and the diaphragm extends downward under the action of the high-pressure water to push the valve core body downward, so that the upper part of the valve core body is separated from the sealed connection with the upper part of the valve core hole, so that the water inlet channel and the water outlet channel are connected, and water is supplied to the outer shell.

4. The adaptive water and fertilizer supplier according to claim 3, characterized in that: A convex edge convexing outward is arranged at the open end of the lower part of the valve core body, and the diaphragm has a cavity one opening downward, a cavity two opening upward is arranged around the cavity one, and a cavity three opening downward is arranged around the cavity two. The diaphragm is connected with the outer wall of the lower part of the valve core body through the inner wall of the cavity one, and the convex edge supports the bottom of the cavity two. The annular wall of the support plate is located in the cavity three and the diaphragm is fixed in the lower opening groove arranged on the valve body through the cavity three. There is a distance between the convex edge and the outer side of the annular wall.

5. The adaptive water and fertilizer supplier according to claim 3, characterized in that: The tail end of the compression spring is vertically arranged and passes through the diaphragm and the valve core body; or at least two mushroom-shaped connecting heads are arranged at the flat shoulder of the valve core body, the diaphragm and the valve core body are fixedly connected through the mushroom-shaped connecting heads, the water inlet hole is arranged in the mushroom-shaped connecting heads, and the tail end of the compression spring is vertically arranged and movably connected to the water inlet hole.

6. The adaptive water and fertilizer supplier according to claim 1, characterized in that: The shell is closed, and a shell air hole is arranged on the upper part of the shell for the shell inner cavity to communicate with the external atmosphere; or the control valve liquid inlet is located outside the shell, and the shell is sealed and connected to the water inlet channel end of the valve body.

7. The adaptive water and fertilizer supplier according to claim 6, characterized in that: The first air hole of the shell is provided with a tubular air hole protection sleeve, which is intersected and fixedly connected with the shell, and the second air hole of the shell is provided at the upper end of the air hole protection sleeve, and a protective cover is provided outside the second air hole of the shell to cover the second air hole of the shell.

8. An adaptive water and fertilizer supply system, comprising an infusion needle and an infusion pipeline connecting the infusion needle and the adaptive water and fertilizer supplier, characterized in that: The adaptive water and fertilizer supplier according to any one of claims 1 to 7 is adopted, wherein the infusion pipeline connects the liquid inlet end of the infusion needle and the liquid outlet of the housing of the adaptive water and fertilizer supplier.

9. The adaptive water and fertilizer supply system according to claim 8, characterized in that: The invention comprises at least two infusion needles, each of which is connected to the self-adaptive water-fertilizer supplier through an infusion pipeline to absorb the liquid therein.

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