Automatic nutrient solution supply device for soilless culture

Abstract

The utility model relates to the technical field of soilless culture, and discloses an automatic nutrient solution supply device for soilless culture, which comprises a valve body, a solution storage cavity is arranged in the valve body, a solution supply pipe is fixedly arranged on the upper side of the valve body and is communicated with the solution storage cavity, a solution outlet hole is arranged on the side surface of the valve body, and the solution outlet hole is communicated with the solution storage cavity. A guide rod extending to the outer side of the valve body is fixedly installed in the liquid outlet hole, a movable cover is installed on the surface of the guide rod in a sliding mode and covers the opening portion of the liquid outlet hole, and a swing arm and a transmission rod are rotatably installed on the side face of the valve body. According to the device, the movable cover covers the liquid outlet hole of the valve body, the swing arm and the transmission rod which are arranged in an L shape are arranged, the swing arm and the transmission rod serve as levers, the floating ball floats on the liquid level, and when the liquid level descends, the floating ball falls, so that the movable cover can be automatically opened, a nutrient solution flows out from the liquid outlet hole, and the nutrient solution consumed in the culture tank is supplemented; therefore, the effects of automatically supplying liquid and automatically controlling the opening and closing of the movable cover are achieved.

Description

Technical Field

[0001] This utility model relates to the field of soilless cultivation technology, specifically to an automatic nutrient solution supply device for soilless cultivation. Background Technology

[0002] In hydroponics, artificially prepared nutrient solutions are used to supply the plants with their mineral nutrition needs. For example, patent document CN212232530U discloses an automatic nutrient solution supply device for hydroponics. This device includes a supply tank, a third infusion bottle, a second infusion bottle, a first infusion bottle, a first conduit, a control panel, a first output pipe, a second mother liquor tank, a second output pipe, a third mother liquor tank, a third output pipe, a glass box, graduation lines, and an output port. A first automatic flow controller is installed at the bottom of the first infusion bottle. The top of the first conduit is connected to the bottom of the first infusion bottle, and the bottom of the first conduit is connected to the top of the first mother liquor tank. This automatic nutrient solution supply device for hydroponics is equipped with a solenoid valve to control the supply of nutrient solution, and has three output pipes to supply various nutrient solutions via the solenoid valves. An automatic flow controller is also included to dilute different nutrient solutions.

[0003] In actual use, the nutrient solution in the culture tank is consumed over time, and it is necessary to replenish the nutrient solution in a timely manner to ensure a suitable liquid level so that the plant roots can absorb it normally. However, the amount of nutrient solution lost in each culture tank is different. Using the existing automatic nutrient solution supply device, it is difficult to control the liquid level in the culture tank. If various level gauges and solenoid valves are used to monitor the liquid level, the cost is obviously high, which is not conducive to large-scale promotion and use, and further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic nutrient solution supply device for soilless cultivation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic nutrient solution supply device for hydroponics, comprising a valve body, the interior of which is a liquid storage chamber, a supply pipe fixedly installed on the upper side of the valve body, the supply pipe communicating with the liquid storage chamber, an outlet hole opened on the side of the valve body, and a guide rod extending to the outside of the valve body fixedly installed in the outlet hole, a movable cover slidably installed on the surface of the guide rod, the movable cover covering the opening of the outlet hole, a connecting seat rotatably installed on the side of the valve body, a swing arm and a transmission rod fixedly installed on the surface of the connecting seat, a float fixedly installed at the end of the transmission rod, the swing arm and the transmission rod being arranged in an L-shape, when the transmission rod is flipped upward, the swing arm abuts against the movable cover, the L-shaped swing arm and transmission rod acting as a lever, the float rising and falling with the liquid level, controlling the opening and closing of the movable cover, thereby realizing the function of automatically controlling the opening and closing of the movable cover and meeting the needs of automatic nutrient supply.

[0006] Preferably, a pre-tightening spring is sleeved on the surface of the guide rod, and an adjusting nut sleeve is threaded onto the end of the guide rod. The adjusting nut sleeve presses one end of the pre-tightening spring so that the other end of the pre-tightening spring abuts against the end face of the movable cover. Rotating the adjusting nut sleeve can change the compression of the pre-tightening spring, so that the clamping force of the movable cover is adjustable and can be adjusted differently to meet different usage requirements.

[0007] Preferably, the opening of the liquid outlet is conical, the inner side of the movable cover is a conical protrusion, the conical protrusion is slidably inserted into the conical opening of the liquid outlet, two positioning pins are fixedly installed on the end face of the movable cover, a pin hole is opened on the side of the valve body, the positioning pin is slidably inserted into the pin hole, a sealing ring is embedded inside the movable cover, the sealing ring is slidably sleeved on the surface of the guide rod, so that the movable cover can reciprocate along the length direction of the guide rod.

[0008] Preferably, a mounting block is fixedly installed on the surface of the swing arm, and an adjusting bolt is threaded onto the mounting block. The end of the adjusting bolt abuts against the end face of the movable cover. The different extension and retraction lengths of the adjusting bolts allow the transmission rod to be tilted at different angles for fine-tuning, so that the float can float on the liquid surface.

[0009] Preferably, the transmission rod includes a sleeve and a telescopic inner rod. The end of the sleeve is fixedly connected to the connecting seat, the telescopic inner rod is slidably installed inside the sleeve, the float is fixedly connected to the end of the telescopic inner rod, and a locking bolt is threaded on the surface of the sleeve to make the length of the transmission rod adjustable.

[0010] Preferably, a waste discharge hole is provided on the lower side of the valve body, which is connected to the liquid storage chamber, and a plug is threadedly installed in the waste discharge hole. The plug can be removed to facilitate the cleaning of blockages and impurities in the valve body. Beneficial effects

[0011] This utility model provides an automatic nutrient solution supply device for hydroponics, which has the following beneficial effects:

[0012] 1. This device utilizes a movable cover to close the liquid outlet of the valve body. Through the L-shaped arrangement of the swing arm and transmission rod, and using the swing arm and transmission rod as levers, a float floats on the liquid surface. When the liquid level drops, the float falls, allowing the movable cover to open automatically, and nutrient solution flows out from the liquid outlet to replenish the nutrient solution lost in the culture tank, until the liquid level rises and the movable cover seals the liquid outlet, achieving the effect of automatic liquid supply and automatic control of the opening and closing of the movable cover.

[0013] 2. This device, by setting pre-tightening springs and adjusting nut sleeves on the surface of the guide rod, uses the pre-tightening springs to press against the movable cover, keeping the movable cover in a normally closed state. Under normal conditions, the storage chamber and supply pipe are filled with nutrient solution, ensuring sensitive dispensing response. This design allows control of the opening of the movable cover by increasing the pumping pressure of the nutrient solution, facilitating the delivery of nutrient solution. Rotating the adjusting nut sleeve changes the compression of the pre-tightening spring, making the clamping force on the movable cover adjustable. When multiple devices are used, they can be connected in parallel on the same water delivery pipe for differentiated adjustments to meet different usage needs, making it more practical. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the orthographic section of the present invention;

[0016] Figure 3 A three-dimensional structural diagram of the valve body;

[0017] Figure 4 This is a schematic diagram of the installation of this utility model.

[0018] In the diagram: 1 Valve body, 2 Liquid storage chamber, 3 Liquid supply pipe, 4 Liquid outlet, 5 Guide rod, 6 Movable cover, 7 Connecting seat, 8 Swing arm, 9 Transmission rod, 10 Float, 11 Pre-tightening spring, 12 Adjusting nut sleeve, 13 Sealing ring, 14 Positioning pin, 15 Adjusting bolt, 16 Rod sleeve, 17 Telescopic inner rod, 18 Locking bolt, 19 Plug, 20 Culture tank, 21 Nutrient solution tank. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4This utility model provides a technical solution: an automatic nutrient solution supply device for hydroponics, including a valve body 1, the interior of the valve body 1 being a liquid storage chamber 2, a liquid supply pipe 3 fixedly installed on the upper side of the valve body 1, the liquid supply pipe 3 communicating with the liquid storage chamber 2, a liquid outlet hole 4 opened on the side of the valve body 1, and a guide rod 5 extending to the outside of the valve body 1 fixedly installed in the liquid outlet hole 4, a movable cover 6 slidably installed on the surface of the guide rod 5, the movable cover 6 covering the opening of the liquid outlet hole 4, wherein the opening of the liquid outlet hole 4 has a conical structure, the inner side of the movable cover 6 has a conical protrusion, the conical protrusion slides into the conical opening of the liquid outlet hole 4, increasing its contact surface and improving the sealing performance of the movable cover 6.

[0021] The movable cover 6 is fitted with a sealing ring 13, which is slidably sleeved on the surface of the guide rod 5. Two positioning pins 14 are fixedly installed on the end face of the movable cover 6. The side of the valve body 1 is provided with a pin hole, and the positioning pin 14 is slidably inserted into the pin hole, so that the movable cover 6 can move back and forth along the length of the guide rod 5.

[0022] A connecting seat 7 is rotatably mounted on the side of the valve body 1. A rocker arm 8 and a transmission rod 9 are fixedly mounted on the surface of the connecting seat 7. A float 10 is fixedly mounted on the end of the transmission rod 9. The rocker arm 8 and the transmission rod 9 are arranged in an L-shape. When the transmission rod 9 is flipped upwards, the rocker arm 8 abuts against the movable cover 6. Specifically, a mounting block is fixedly mounted on the surface of the rocker arm 8, and an adjusting bolt 15 is threaded onto the mounting block. The end of the adjusting bolt 15 abuts against the end face of the movable cover 6. (See reference...) Figure 4 The extension and retraction lengths of the adjusting bolt 15 are different, so that the transmission rod 9 is tilted at different angles for fine-tuning, allowing the float 10 to float on the liquid surface.

[0023] A waste discharge hole is provided on the lower side of the valve body 1. The waste discharge hole is connected to the liquid storage chamber 2, and a plug 19 is threadedly installed in the waste discharge hole.

[0024] In this embodiment, the transmission rod 9 includes a rod sleeve 16 and a telescopic inner rod 17. The end of the rod sleeve 16 is fixedly connected to the connecting seat 7. The telescopic inner rod 17 is slidably installed inside the rod sleeve 16. The float 10 is fixedly connected to the end of the telescopic inner rod 17. The surface of the rod sleeve 16 is threaded with a locking bolt 18. The telescopic inner rod 17 can be pulled out, so that the length of the transmission rod 9 can be adjusted.

[0025] A preload spring 11 is fitted on the surface of the guide rod 5, and an adjusting nut sleeve 12 is threaded onto the end of the guide rod 5. The adjusting nut sleeve 12 presses one end of the preload spring 11 so that the other end of the preload spring 11 abuts against the end face of the movable cover 6.

[0026] By setting a pre-tightening spring 11 and an adjusting nut sleeve 12 on the surface of the guide rod 5, the pre-tightening spring 11 presses against the movable cover 6, keeping the movable cover 6 in a normally closed state. Under normal conditions, the liquid storage chamber 2 and the liquid supply pipe 3 are filled with nutrient solution, ensuring its liquid discharge response is sensitive. This design can also control the opening of the movable cover 6 by increasing the pumping pressure of the nutrient solution, providing convenience for the delivery of nutrient solution. Rotating the adjusting nut sleeve 12 can change the compression of the pre-tightening spring 11, making the clamping force on the movable cover 6 adjustable. When multiple devices are used, they are connected in parallel on the same water delivery pipe. Due to the different installation positions of the valve body 1, differentiated adjustments can be made to meet different usage needs, making it more practical.

[0027] The device uses a movable cover 6 to cover the outlet hole 4 of the valve body 1. By setting up an L-shaped swing arm 8 and a transmission rod 9, and using the swing arm 8 and transmission rod 9 as levers, a float 10 floats on the liquid surface. When the liquid level drops, the float 10 falls, which allows the movable cover 6 to open automatically, and nutrient solution flows out from the outlet hole 4 to replenish the nutrient solution lost in the culture tank 20 until the liquid level rises and the movable cover 6 blocks the outlet hole, thus achieving the effect of automatic liquid supply and automatic control of the opening and closing of the movable cover 6.

[0028] Working principle: As shown in Figure 4, valve body 1 is installed in culture tank 20, which is filled with culture medium. Float 10 floats on the surface of the culture medium. Supply pipe 3 is connected to nutrient solution tank 21. Nutrient solution in nutrient solution tank 21 flows into storage chamber 2. The internal pressure of storage chamber 2 is balanced with the pressure of pre-tightening spring 11 and swing arm 8 on movable cover 6. When the level of nutrient solution in culture tank 20 drops, float 10 falls, transmission rod 9 and swing arm 8 rotate a certain angle, reducing the pressure of swing arm 8 on movable cover 6. Nutrient solution in storage chamber 2 pushes open movable cover 6 and flows into culture tank 20 through outlet hole 4, replenishing the nutrient solution lost in culture tank 20. As the level of nutrient solution in culture tank 20 rises, float 10 floats up, causing swing arm 8 to press against movable cover 6 again. Movable cover 6 closes outlet hole 4, stopping the output of culture medium, thus realizing the function of automatically controlling the opening and closing of movable cover 6.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic nutrient solution supply device for hydroponics, comprising a valve body (1), characterized in that: The inside of the valve body (1) is a liquid storage chamber (2). A liquid supply pipe (3) is fixedly installed on the upper side of the valve body (1). The liquid supply pipe (3) is connected to the liquid storage chamber (2). A liquid outlet hole (4) is opened on the side of the valve body (1). A guide rod (5) extending to the outside of the valve body (1) is fixedly installed in the liquid outlet hole (4). A movable cover (6) is slidably installed on the surface of the guide rod (5). The movable cover (6) covers the opening of the liquid outlet hole (4). A connecting seat (7) is rotatably installed on the side of the valve body (1). A swing arm (8) and a transmission rod (9) are fixedly installed on the surface of the connecting seat (7). A float ball (10) is fixedly installed at the end of the transmission rod (9). The swing arm (8) and the transmission rod (9) are arranged in an L-shape. When the transmission rod (9) is flipped upward, the swing arm (8) presses against the movable cover (6).

2. The automatic nutrient solution supply device for hydroponics according to claim 1, characterized in that: The guide rod (5) is fitted with a pre-tightening spring (11), and the end of the guide rod (5) is threaded with an adjusting nut sleeve (12). The adjusting nut sleeve (12) presses one end of the pre-tightening spring (11) so that the other end of the pre-tightening spring (11) abuts against the end face of the movable cover (6).

3. The automatic nutrient solution supply device for hydroponics according to claim 2, characterized in that: The movable cover (6) is fitted with a sealing ring (13), which is slidably sleeved on the surface of the guide rod (5).

4. The automatic nutrient solution supply device for hydroponics according to claim 3, characterized in that: Two positioning pins (14) are fixedly installed on the end face of the movable cover (6), and a pin hole is opened on the side of the valve body (1), and the positioning pin (14) is slidably inserted into the pin hole.

5. The automatic nutrient solution supply device for hydroponics according to claim 4, characterized in that: An mounting block is fixedly installed on the surface of the swing arm (8), and an adjusting bolt (15) is threaded onto the mounting block. The end of the adjusting bolt (15) abuts against the end face of the movable cover (6).

6. The automatic nutrient solution supply device for hydroponics according to claim 5, characterized in that: The transmission rod (9) includes a rod sleeve (16) and a telescopic inner rod (17). The end of the rod sleeve (16) is fixedly connected to the connecting seat (7). The telescopic inner rod (17) is slidably installed inside the rod sleeve (16). The float (10) is fixedly connected to the end of the telescopic inner rod (17). The surface of the rod sleeve (16) is threaded with a locking bolt (18).

7. An automatic nutrient solution supply device for hydroponics according to any one of claims 1-6, characterized in that: The opening of the liquid outlet (4) is a conical structure, and the inner side of the movable cover (6) is a conical protrusion. The conical protrusion is slidably inserted into the conical opening of the liquid outlet (4).

8. The automatic nutrient solution supply device for hydroponics according to claim 7, characterized in that: The valve body (1) has a waste discharge hole on its lower side, which is connected to the liquid storage chamber (2), and a plug (19) is threaded into the waste discharge hole.

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