Flow control device for fertilization system

Abstract

The flow control device comprises a valve body, a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are symmetrically and fixedly connected to the outer surface of the valve body, a filter screen plate is arranged on the inner wall of the liquid outlet pipe, guide grooves which are symmetrical up and down are formed in the inner wall of the liquid outlet pipe, and the filter screen plate is arranged in the guide grooves. Two opposite limiting openings are formed in one side of the inner wall of the guide groove, the filter screen plate can be jacked to move towards the liquid outlet pipe through impact force generated when fluid enters the liquid inlet pipe, the filter screen plate is installed in the installation frame, the two ends of the installation frame are elastically supported by the connecting springs, and therefore after the valve body is in a closed use state, the filter screen plate can be separated from the liquid outlet pipe. When fluid impact force disappears, the mounting frame can be pulled by the connecting spring to reset, then the filter screen plate can be downwards ejected out of the push-out groove to be cleaned and replaced, the structure of the device is optimized, the sealed use state can be kept, and the filter screen plate can be conveniently and rapidly cleaned and replaced.

Description

Technical Field

[0001] The utility model relates to the field of flow control devices, in particular to a flow control device for a fertilization system. Background Art

[0002] In the existing agricultural fertilization system, precise control of fertilizer flow is one of the key factors to achieve efficient and scientific fertilization. Solenoid valve, as a commonly used flow control device, plays an important role in the fertilization system.

[0003] However, in actual applications, the fluid used for fertilization is often not completely pure and may contain various impurities, particulate matter, etc. If these impurities are not processed and directly pass through the solenoid valve, it is easy to cause the impurities to accumulate inside the solenoid valve, gradually affecting the normal operation of the valve core, resulting in inaccurate flow control, and may even cause the solenoid valve to be blocked, making it unable to work normally, seriously affecting the operating efficiency and stability of the fertilization system. After use, the existing solenoid valves with added filtering devices cannot quickly remove and clean the filtering devices, which also leads to a lack of practicality during use.

[0004] Therefore, a flow control device for a fertilization system is proposed. Utility Model Content

[0005] In view of the above problems, the utility model provides a flow control device for a fertilization system to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is:

[0007] A flow control device for a fertilization system comprises a valve body, a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe and the liquid outlet pipe are symmetrically fixedly connected to the outer surface of the valve body, a filter screen is arranged on the inner wall of the liquid outlet pipe, a guide groove symmetrically arranged in the upper and lower parts is provided on the inner wall of the liquid outlet pipe, two relative limiting openings are provided on one side of the inner wall of the guide groove, a block is arranged on the inner wall of the limiting opening, a connecting spring is fixedly connected between the block and the inner wall of the guide groove, a mounting frame is fixedly connected between the four blocks, a socket matching the thickness of the filter screen is arranged on the upper and lower ends of the mounting frame, a push-out groove penetrating the liquid outlet pipe is arranged on the lower guide groove, a sealing plate is inserted on the inner wall of the push-out groove, an ejection assembly is arranged between the upper guide groove and the liquid outlet pipe, and the filter screen is normally opposite to the push-out groove.

[0008] In a further technical solution, the ejection assembly includes a slide opening, which is opened on the top surface of the liquid outlet pipe, the slide opening is opposite to the middle part of the guide groove located above, a sealing strip is inserted into the inner wall of the slide opening, and a pressure block is fixedly connected to the top end of the sealing strip.

[0009] The sealing strip can maintain the sealing performance of the liquid outlet pipe when it is located on the inner wall of the sliding port, and can push the filter screen plate inside the socket out of the slot when the sealing strip is inserted into the inside of the liquid outlet pipe.

[0010] In a further technical solution, a support spring is fixedly connected between the bottom surface of the pressing block and the surface of the liquid outlet pipe, and the pressing block and the support spring both have elliptical cross-sections.

[0011] The stability of the supporting sealing strip can be improved, while the resetting effect of the sealing strip after being pressed down can be maintained.

[0012] In a further technical solution, a liquid outlet is provided on the surface of the installation frame, and the liquid outlet is communicated with a hole on the surface of the filter screen plate.

[0013] It is convenient to insert the filter screen while keeping the surface filtering unobstructed.

[0014] In a further technical solution, the inner wall of the liquid outlet pipe is provided with a flow guide port, and the flow guide port is square, and the filter screen plate and the mounting frame are both square.

[0015] The filter screen plate can be conveniently placed on the inner wall of the guide port to achieve a fitting effect.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The impact force of the fluid entering through the liquid inlet pipe can push the filter screen plate toward the liquid outlet pipe. Since the filter screen plate is installed inside the installation frame, and both ends of the installation frame are elastically supported by connecting springs, after the valve body is closed for use, the fluid impact force disappears and the installation frame can be pulled back to its original position by the connecting spring. Then the filter screen plate can be pushed downward out of the ejection slot for cleaning and replacement. The structural optimization of the device can not only maintain the sealed use state, but also facilitate the rapid cleaning and replacement of the filter screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the flow guide port and the filter screen of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly structure of the filter screen and the liquid outlet pipe of the utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 5It is a schematic diagram of the assembly structure of the filter screen and the installation frame of the utility model.

[0023] Description of reference numerals:

[0024] 1. Valve body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Diversion port; 5. Filter screen; 6. Guide groove; 7. Limit port; 8. Connecting spring; 9. Stopper; 10. Installation frame; 11. Socket; 12. Push-out groove; 13. Sealing plate; 14. Press block; 15. Slide port; 16. Sealing strip; 17. Support spring; 18. Liquid outlet. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1-5, a flow control device for a fertilization system comprises a valve body 1, a liquid inlet pipe 2, and a liquid outlet pipe 3. The liquid inlet pipe 2 and the liquid outlet pipe 3 are symmetrically fixedly connected to the outer surface of the valve body 1. A filter screen plate 5 is arranged on the inner wall of the liquid outlet pipe 3. A guide groove 6 symmetrically arranged in an upper and lower direction is provided on the inner wall of the liquid outlet pipe 3. Two opposite limiting openings 7 are arranged on one side of the inner wall of the guide groove 6. A stopper 9 is arranged on the inner wall of the limiting opening 7. A connecting spring 8 is fixedly connected between the stopper 9 and the inner wall of the guide groove 6. A mounting frame 10 is fixedly connected between the four stoppers 9. Sockets 11 matching the thickness of the filter screen plate 5 are arranged at both upper and lower ends of the mounting frame 10. A push-out groove 12 penetrating the liquid outlet pipe 3 is arranged in the guide groove 6 at the bottom. A sealing plate 13 is inserted into the inner wall of the push-out groove 12. A push-out assembly is arranged between the guide groove 6 at the top and the liquid outlet pipe 3. The filter screen plate 5 is normally opposite to the push-out groove 12.

[0030] See also Figure 3 and Figure 4 The ejection assembly includes a slide 15, which is opened on the top surface of the liquid outlet pipe 3, and the slide 15 is opposite to the middle of the guide groove 6 located above. A sealing strip 16 is inserted into the inner wall of the slide 15, and a pressure block 14 is fixedly connected to the top of the sealing strip 16.

[0031] The sealing strip 16 can maintain the sealing property of the liquid outlet pipe 3 when it is located on the inner wall of the sliding opening 15 , and can push the filter screen plate 5 inside the socket 11 out of the groove 12 when the sealing strip 16 is inserted into the liquid outlet pipe 3 .

[0032] See also Figure 3 and Figure 4 A support spring 17 is fixedly connected between the bottom surface of the pressing block 14 and the surface of the liquid outlet pipe 3, and both the pressing block 14 and the support spring 17 have elliptical cross-sections.

[0033] The stability of the supporting sealing strip 16 can be improved, while the resetting effect of the sealing strip 16 after being pressed down can be maintained.

[0034] See also Figure 3 and Figure 5 A liquid outlet 18 is provided on the surface of the mounting frame 10 , and the liquid outlet 18 is communicated with the holes on the surface of the filter screen plate 5 .

[0035] The filter screen plate 5 can be conveniently inserted while maintaining smooth surface filtration.

[0036] See also Figure 1 and Figure 3 The inner wall of the liquid outlet pipe 3 is provided with a flow guide port 4, and the flow guide port 4 is square, and the filter screen plate 5 and the mounting frame 10 are both square.

[0037] The filter screen plate 5 can be conveniently placed on the inner wall of the guide port 4 to achieve a fitting effect.

[0038] During operation, first, when no fluid enters the valve body 1, the installation frame 10 is supported by the connecting spring 8 in the middle of the inner wall of the guide groove 6, and the filter screen plate 5 is opposite to the opening of the push-out groove 12. At this time, the sealing plate 13 is located on the inner wall of the push-out groove 12, and the sealing strip 16 is located on the inner wall of the sliding opening 15 to maintain the sealing of the liquid outlet pipe 3. When the valve body 1 begins to pass the fluid, the flow impact force of the liquid can impact the filter screen plate 5 inside the liquid outlet pipe 3. During the process, the block 9 is elastically pulled by the connecting spring 8 to slide toward the inner wall of the limit opening 7. When the valve body 1 remains in use, the filter screen plate 5 can be filtered normally. When the valve body 1 is closed, the reset of the connecting spring 8 can drag the installation frame 10 back to its original position. At this time, the socket 11 and the push-out groove 12 are opposite to each other, and the staff can press the pressure block 14 downward to compress the support spring 17. At the same time, the sealing strip 16 passes through the lower slide 15 and enters the guide groove 6 at the top, and then passes through the guide groove 6 to enter the socket 11, and the filter screen plate 5 on the inner wall of the socket 11 can be pushed downward into the push-out groove 12. At this time, the sealing plate 13 on the inner wall of the push-out groove 12 can be pushed out for a distance. At this time, the sealing plate 13 is pulled out, and then the sealing strip 16 is continued to be pressed down to allow the bottom end of the filter screen plate 5 to pass through the bottom of the push-out groove 12 for replacement. When replacing the filter screen plate 5, the sealing plate 13 can be used as a pushing device to plug the filter screen plate 5 into the inner wall of the socket 11.

[0039] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A flow control device for a fertilization system, comprising a valve body (1), a liquid inlet pipe (2), and a liquid outlet pipe (3), wherein the liquid inlet pipe (2) and the liquid outlet pipe (3) are symmetrically fixedly connected to the outer surface of the valve body (1), characterized in that: The inner wall of the liquid outlet pipe (3) is provided with a filter screen plate (5), the inner wall of the liquid outlet pipe (3) is provided with a guide groove (6) symmetrical in the upper and lower directions, one side of the inner wall of the guide groove (6) is provided with two opposite limiting openings (7), the inner wall of the limiting opening (7) is provided with a stopper (9), a connecting spring (8) is fixedly connected between the stopper (9) and the inner wall of the guide groove (6), a mounting frame (10) is fixedly connected between the four stoppers (9), the upper and lower ends of the mounting frame (10) are provided with a plug opening (11) matching the thickness of the filter screen plate (5), the guide groove (6) located at the bottom is provided with a push-out groove (12) penetrating the liquid outlet pipe (3), a sealing plate (13) is inserted into the inner wall of the push-out groove (12), an ejection assembly is provided between the guide groove (6) located at the top and the liquid outlet pipe (3), and the filter screen plate (5) is normally opposite to the push-out groove (12).

2. The flow control device for a fertilization system according to claim 1, characterized in that: The ejection assembly comprises a sliding opening (15), the sliding opening (15) being arranged on the top surface of the liquid outlet pipe (3), the sliding opening (15) being opposite to the middle part of the guide groove (6) located above, a sealing strip (16) being inserted into the inner wall of the sliding opening (15), and a pressing block (14) being fixedly connected to the top end of the sealing strip (16).

3. The flow control device for a fertilization system according to claim 2, characterized in that: A support spring (17) is fixedly connected between the bottom surface of the pressing block (14) and the surface of the liquid outlet pipe (3), and both the pressing block (14) and the support spring (17) have elliptical cross-sections.

4. The flow control device for a fertilization system according to claim 1, characterized in that: A liquid outlet (18) is provided on the surface of the installation frame (10), and the liquid outlet (18) is communicated with a hole on the surface of the filter screen plate (5).

5. The flow control device for a fertilization system according to claim 1, characterized in that: The inner wall of the liquid outlet pipe (3) is provided with a flow guide port (4), and the flow guide port (4) is square.

6. The flow control device for a fertilization system according to claim 1, characterized in that: The filter screen plate (5) and the mounting frame (10) are both square.

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