Teaching and practical training device for filtering and fertilizing system

Abstract

The utility model discloses a teaching and practical training device for a filtering and fertilizing system. According to the technical scheme, the device comprises a tray, a frame arranged on the tray and a filtering and fertilizing mechanism arranged on the tray, and is characterized in that the filtering and fertilizing mechanism comprises a fertilizing mechanism, a filtering mechanism, a water replenishing bypass, a fertilizer absorbing bypass and a water return pipeline; the fertilizing mechanism comprises a fertilizing tank, and a metering pump and a stirrer which are mounted at the top of the fertilizing tank; the filtering mechanism comprises a centrifugal filter, a three-way ball valve 1 #, an electric three-way valve 1 #, a sand filtering tank, a three-way ball valve 2 #, a three-way ball valve 3 #, a three-way ball valve 4 #, an electric three-way valve 2 #, an automatic intake and exhaust valve, an electric three-way valve 3 # and a laminated filter which are sequentially connected through a pipeline; an inlet of the water replenishing bypass is positioned on a transverse pipe between the three-way ball valve 4 # and the electric three-way valve 2 # and is used for injecting water for dispensing into the fertilization tank; the water supplementing bypass is sequentially connected with an electromagnetic valve and a diaphragm valve.

Description

Technical Field

[0001] The utility model belongs to the field of teaching equipment, and specifically relates to a teaching and training device for a filtering and fertilizing system. Background Art

[0002] Irrigation and drainage engineering is a core compulsory professional course for agricultural water conservancy engineering majors. It is also a professional course or professional auxiliary course for hydrology and water resources engineering, soil and water conservation and desertification control, agronomy and other majors. It is a discipline that pays great attention to the combination of theory and practice. However, the existing practical training teaching is often carried out in the form of theoretical explanations and short-term internships. It lacks regular and periodic practical training, neglects the cultivation of basic engineering qualities, and causes the lack of hands-on ability training. At the same time, the relevant equipment also lacks comprehensiveness and design. It is often fixed in model and occupies a large area. It cannot be disassembled and assembled, and it is not resistant to tossing. It cannot be closely connected with the actual engineering. It has not kept up with the development and reform of professional teaching methods, is not conducive to the development of teaching work, and does not meet the needs of employment positions. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a teaching and training device for a filtering and fertilizing system.

[0004] In order to solve the above problems, the technical solution adopted by the utility model includes: a tray, a frame arranged on the tray and a filtering and fertilizing mechanism arranged on the tray, characterized in that: the filtering and fertilizing mechanism includes a fertilizing mechanism, a filtering mechanism, a water supply bypass, a fertilizer absorption bypass and a return water pipeline; the fertilizing mechanism includes a fertilizing tank, a metering pump and a mixer installed on the top of the fertilizing tank; the filtering mechanism includes a centrifugal filter, a three-way ball valve 1#, an electric three-way valve 1#, a sand filter tank, a three-way ball valve 2#, a three-way ball valve 3#, a three-way ball valve 4#, an electric three-way valve 2#, an automatic air inlet and outlet valve connected in sequence through pipelines , electric three-way valve 3# and laminated filter; the inlet of the water replenishment bypass is located on the horizontal pipe between the three-way ball valve 4# and the electric three-way valve 2#, and is used to inject the preparation water into the fertilization tank; the water replenishment bypass is connected with a solenoid valve and a diaphragm valve in sequence; the inlet of the fertilizer absorption bypass is connected with the electric three-way valve 2#, and the outlet merges into the pipeline of the filtering mechanism, which is used to absorb the liquid in the fertilization tank; the fertilizer absorption bypass is connected with a check valve, a proportional pump and a pipeline filter in sequence; the return water pipeline is connected with the pipeline of the filtering mechanism through a three-way ball valve 5#, and is used for the return of pipeline flushing water.

[0005] The teaching and training device for the filtering and fertilizing system is characterized in that a float switch, a pH meter, and a conductivity meter are arranged in the fertilizing tank.

[0006] The teaching and training device for the filtration and fertilization system is characterized in that it also includes a high-voltage control box and a low-voltage control box. The high-voltage control box is used to control the metering pump, the mixer, the electric three-way valve 1#, the electric three-way valve 2# and the electromagnetic, and the low-voltage control box is used to control the float switch, the pH meter and the conductivity meter.

[0007] The teaching and training device for the filtration and fertilization system is characterized in that the metering pump is connected to the pipeline between the three-way ball valve 1# and the electric three-way valve 1# through a first hose.

[0008] The teaching and training device for the filtering and fertilizing system is characterized in that the proportional pump directly draws nutrient solution from the fertilizing tank through the second hose, and sends the nutrient solution to the filtering mechanism after mixing.

[0009] The teaching and training device for the filtration and fertilization system is characterized in that an overrunning pipeline is connected between the three-way ball valve 1# and the three-way ball valve 4#.

[0010] The teaching and training device for the filtering and fertilizing system is characterized in that a digital pressure gauge is provided on the pipeline of the filtering mechanism.

[0011] The advantages of the teaching and training device for the filtration and fertilization system of the utility model are as follows: the filtration and fertilization unit in the actual water-saving irrigation project is condensed into a teaching and training device, which is intuitively displayed, and well solves the problem of the disconnection between theoretical teaching and engineering practice, which is conducive to hands-on and convenient for teaching. The device covers aspects such as fertilization mechanism and filtration mechanism, and mainly presents the core knowledge of related technologies such as pipe network connection, water purification, water-fertilizer integration, and online monitoring. Through the operation training of the teaching and training device for the filtration and fertilization system, students can deepen their understanding of the theoretical knowledge of water conservancy engineering, strengthen their understanding of the filtration and fertilization system, cultivate good engineering quality and practical ability, and improve their comprehensive professional ability and business level.

[0012] The utility model is further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural schematic diagram of the teaching and training device of the utility model filtering and fertilizing system;

[0014] Figure 2 It is a schematic diagram of the back structure of the teaching and training device of the utility model filtering and fertilizing system. DETAILED DESCRIPTION

[0015] Reference Figure 1-2As shown, the field irrigation teaching and training device of the utility model comprises a tray 1, a frame 2 arranged on the tray 1 and a filtering and fertilizing mechanism arranged on the tray 1. The filtering and fertilizing mechanism comprises a fertilizing mechanism, a filtering mechanism, a water supply bypass 3, a fertilizer absorption bypass 4 and a return pipe 5. The fertilizing mechanism comprises a fertilizer tank 6, a metering pump 7 and a mixer 8 installed on the top of the fertilizer tank 6. The filtering mechanism comprises a centrifugal filter 9, a three-way ball valve 1#10, an electric three-way valve 1#11, a sand filter tank 12, a three-way ball valve 2#13, a three-way ball valve 3#14, a three-way ball valve 4#15, an electric three-way valve 2#16, an automatic air intake and exhaust valve 17, an electric three-way valve 3#18 and a laminated filter 19 connected in sequence through a pipeline 36. The inlet of the water supply bypass 3 is located on the horizontal pipe 301 between the three-way ball valve 4#15 and the electric three-way valve 2#16, and is used to inject the preparation water into the fertilizer tank 6. The water replenishment bypass 3 is connected to a solenoid valve 20 and a diaphragm valve 21 in sequence. The inlet of the fertilizer absorption bypass 4 is connected to the electric three-way valve 2#16, and the outlet of the fertilizer absorption bypass 4 merges into the pipe 36 of the filtering mechanism, which is used to absorb the nutrient solution in the fertilization tank 6 and mix it into fertilizer water of different concentrations. The fertilizer absorption bypass 4 is connected to a check valve 22, a proportional pump 23 and a pipeline filter 24 in sequence. The return water pipeline 5 is connected to the pipe 36 of the filtering mechanism through a three-way ball valve 5#26, which is used for the return of pipeline flushing water. With the above structure, the external pressure water can be filtered and treated with medicine (fertilizer), so that it can be sent as qualified irrigation water, which can be used for plant irrigation and fertilization.

[0016] Preferably, a float switch 27 , a pH meter 28 , and a conductivity meter 29 are provided in the fertilization tank 6 for monitoring the state of the nutrient solution in the fertilization tank 6 .

[0017] Preferably, it also includes a strong current control box 30 and a weak current control box 31. The strong current control box 30 is used to control the metering pump 7, the mixer 8, the electric three-way valve 1#11, the electric three-way valve 2#16 and the solenoid valve 20, and the weak current control box 31 is used to control the float switch 27, the pH meter 28 and the conductivity meter 29. A two-way power supply separation structure is adopted to ensure power safety.

[0018] Preferably, the metering pump 7 is connected to the pipeline between the three-way ball valve 1#10 and the electric three-way valve 1#11 through a first hose 34. The proportional pump 23 directly draws nutrient solution from the fertilization tank 6 through a second hose 35, and sends it to the filtering mechanism after mixing. Through the above connection, the filtering fertilization mechanism can use two different methods to add nutrient solution to the filtering mechanism.

[0019] Preferably, a bypass pipe 32 is connected between the three-way ball valve 1#10 and the three-way ball valve 4#15. Through the bypass pipe 32, the sand filtration step can be skipped by switching the valve according to the water quality parameters of different water sources, so as to achieve the purpose of optimizing the process and saving energy and reducing emissions.

[0020] Preferably, a digital pressure gauge 33 is provided on the pipeline 36 of the filtering mechanism for detecting changes in pipeline pressure.

[0021] The above does not impose any form of limitation on the present invention. Although the present invention has been disclosed as a preferred implementation case as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the equivalent implementation cases of equivalent changes by using the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A teaching and training device for a filtration fertilization system, comprising a tray (1), a frame (2) arranged on the tray (1), and a filtration fertilization mechanism arranged on the tray (1), characterized in that: The filtering and fertilizing mechanism comprises a fertilizing mechanism, a filtering mechanism, a water supply bypass (3), a fertilizer absorption bypass (4) and a return pipe (5); the fertilizing mechanism comprises a fertilizing tank (6), a metering pump (7) and a mixer (8) installed on the top of the fertilizing tank (6); the filtering mechanism comprises a centrifugal filter (9), a three-way ball valve 1# (10), an electric three-way valve 1# (11), a sand filter tank (12), a three-way ball valve 2# (13), a three-way ball valve 3# (14), a three-way ball valve 4# (15), an electric three-way valve 2# (16), an automatic air intake and exhaust valve (17), an electric three-way valve 3# (18) and a laminated filter (19) connected in sequence via a pipe (36); the inlet of the water supply bypass (3) is located at the The horizontal pipe (301) between the three-way ball valve 4# (15) and the electric three-way valve 2# (16) is used to inject the preparation water into the fertilizer tank (6); the water supply bypass (3) is connected to the electromagnetic valve (20) and the diaphragm valve (21) in sequence; the inlet of the fertilizer absorption bypass (4) is connected to the electric three-way valve 2# (16), and the outlet is connected to the pipeline (36) of the filtering mechanism, and is used to absorb the liquid in the fertilizer tank (6); the fertilizer absorption bypass (4) is connected to the check valve (22), the proportional pump (23) and the pipeline filter (24) in sequence; the return water pipeline (5) is connected to the pipeline (36) of the filtering mechanism through the three-way ball valve 5# (26) and is used for the return of pipeline flushing water.

2. The teaching and training device for the filtration and fertilization system according to claim 1 is characterized by: The fertilization tank (6) is provided with a float switch (27), a pH meter (28), and an electrical conductivity meter (29).

3. The teaching and training device for the filtration and fertilization system according to claim 2 is characterized in that: It also includes a strong current control box (30) and a weak current control box (31), wherein the strong current control box (30) is used to control the metering pump (7), the mixer (8), the electric three-way valve 1# (11), the electric three-way valve 2# (16) and the solenoid valve (20), and the weak current control box (31) is used to control the float switch (27), the pH meter (28) and the conductivity meter (29).

4. The teaching and training device for the filtration and fertilization system according to claim 1 is characterized by: The metering pump (7) is connected to the pipeline between the three-way ball valve 1# (10) and the electric three-way valve 1# (11) via a first hose (34).

5. The teaching and training device for the filtration fertilization system according to claim 1 is characterized by: The proportional pump (23) directly draws nutrient solution from the fertilization tank (6) through the second hose (35), mixes the nutrient solution and sends it to the filtering mechanism.

6. The teaching and training device for the filtration fertilization system according to claim 1 is characterized by: An overrunning pipeline (32) is connected between the three-way ball valve #1 (10) and the three-way ball valve #4 (15).

7. The teaching and training device for the filtration and fertilization system according to claim 1 is characterized by: A digital pressure gauge (33) is provided on the pipeline (36) of the filtering mechanism.

Images