Special anti-reflux valve device for portable agricultural fertilization pump

Abstract

The utility model discloses a special anti-reflux valve device for a portable agricultural fertilization pump, which comprises a shell, a non-return component and a water flow filtering component are arranged in the shell, sealing components are arranged on the non-return component and the water flow filtering component, the water flow filtering component comprises a telescopic cylinder, and the telescopic cylinder is fixedly connected with the shell. A filter screen is fixedly installed on the outer wall of the telescopic cylinder, threads are arranged on the side wall of the filter screen, a spring rod is fixedly installed on the inner wall of the telescopic cylinder, a telescopic rod is fixedly installed at the other end of the spring rod, a positioning groove is formed in the outer wall of the telescopic rod, and a positioning ball is arranged on the inner wall of the opening end of the telescopic cylinder. And a limiting block is fixedly mounted at the bottom end of the telescopic rod. Through the water flow filtering assembly, water flow entering the anti-reflux valve device is subjected to impurity filtering, impurity attachment is avoided, abrasion to sealing faces of parts is also avoided, and impurities are prevented from being clamped among the parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to anti -backflow valve device technical field, especially in kind of portable agricultural fertilization pump special anti -backflow valve device. BACKGROUND

[0002] Agricultural fertilization pump is a kind of important core equipment in the water and fertilizer integrated system in agriculture, liquid fertilizer or pesticide can be accurately irrigated into irrigation pipeline by certain proportion, to realize the transportation and uniform distribution of water and fertilizer simultaneously.

[0003] Now the agricultural fertilization pump needs to install anti -backflow valve device to avoid the main pipe water flow backflow, but most of the anti -backflow valve device is not provided with perfect impurity filtering component, the inner wall of traditional anti -backflow valve device is easily attached by the impurity in water flow, also easily lead to the sealing surface of anti -backflow valve device internal parts is abraded, influence sealing effect, also can lead to the impurity in water flow is jammed in anti -backflow valve device internal parts, cause valve cannot normally close, reduce the reliability of the function of stopping reverse, and use effect is not good. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of portable agricultural fertilization pump special anti -backflow valve device, the inner wall of anti -backflow valve device is easily attached by the impurity in water flow, also easily lead to the sealing surface of anti -backflow valve device internal parts is abraded, influence sealing effect, also can lead to the impurity in water flow is jammed in anti -backflow valve device internal parts, cause valve cannot normally close, reduce the reliability of the function of stopping reverse.

[0005] To achieve the above object, provide a kind of portable agricultural fertilization pump special anti -backflow valve device, including: shell, the inside of the shell is provided with anti -backflow component and water flow filtering component, the anti -backflow component and water flow filtering component are all provided with sealing assembly;

[0006] The water flow filtering component includes telescopic cylinder, the outer wall of the telescopic cylinder is fixedly installed with filter screen, the side wall of the filter screen is provided with screw thread, the inner wall of the telescopic cylinder is fixedly installed with spring rod, the other end of the spring rod is fixedly installed with telescopic rod, the outer wall of the telescopic rod is provided with positioning groove, the opening end inner wall of the telescopic cylinder is provided with positioning bead, the bottom end of the telescopic rod is fixedly installed with limiting block, the telescopic rod is penetrated in the opening end of telescopic cylinder.

[0007] According to the portable agricultural fertilization pump special anti -backflow valve device, the anti -backflow component includes anti -backflow plate, the one side of the anti -backflow plate is fixedly installed with ring, the other side of the anti -backflow plate is fixedly installed with long pole, the other end side wall of the long pole is slidably installed with connecting ring, the outer wall of the connecting ring is fixedly installed with support rod.

[0008] According to the anti-backflow valve device special for the portable agricultural fertilization pump, the other end of the long rod is fixedly installed on the inner wall of the shell.

[0009] According to the anti-backflow valve device special for the portable agricultural fertilization pump, the outer wall of the long rod is sleeved with a spring, and one end of the spring is fixedly installed on the other side of the anti-backflow plate.

[0010] According to the anti-backflow valve device special for the portable agricultural fertilization pump, the other end of the spring is fixedly installed on the outer wall of the connecting ring, and the outer ring is fixedly installed on the inner wall of the shell.

[0011] According to the anti-backflow valve device special for the portable agricultural fertilization pump, the sealing assembly comprises the mounting ring and the second sealing ring, and the mounting ring is fixedly installed on the inner wall of the shell.

[0012] According to the anti-backflow valve device special for the portable agricultural fertilization pump, the outer wall of the mounting ring is fixedly installed with the first sealing ring, and the second sealing ring is fixedly installed on one side of the anti-backflow plate.

[0013] The above scheme has the beneficial effects that:

[0014] In the anti-backflow valve device, the water flow filter assembly is arranged, the water flow entering the anti-backflow valve device is effectively filtered, impurities in the water flow are filtered and removed, the impurities are prevented from continuously adhering to the inner wall of the anti-backflow valve device, the sealing surface of the internal parts of the anti-backflow valve device is prevented from being abraded, the sealing of the filter screen and the anti-backflow plate is effectively realized, the phenomenon of impurity leakage at the mounting position of the filter screen is avoided, the filtering effect of the filtering assembly is further improved, the sealing effect of the anti-backflow plate is further improved, the backflow water is prevented from leaking from the gap, and the use effect is good.

[0015] In the anti-backflow valve device, the sealing assembly is arranged, the filter screen and the anti-backflow plate are effectively sealed, the phenomenon of impurity leakage at the mounting position of the filter screen is avoided, the filtering effect of the filtering assembly is further improved, the sealing effect of the anti-backflow plate is further improved, the backflow water is prevented from leaking from the gap, and the use effect is good.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1It is internal plan view of the utility model of a portable agricultural fertilization pump special anti -backflow valve device,

[0019] Figure 2 It is the water flow filter assembly perspective view of the utility model of a portable agricultural fertilization pump special anti -backflow valve device,

[0020] Figure 3 It is the filter screen perspective view of the utility model of a portable agricultural fertilization pump special anti -backflow valve device,

[0021] Figure 4 It is the enlarged view of A of the utility model of a portable agricultural fertilization pump special anti -backflow valve device.

[0022] Figure 5 It is the enlarged view of B of the utility model of a portable agricultural fertilization pump special anti -backflow valve device.

[0023] Legend:

[0024] 1, shell, 2, anti -backflow assembly, 21, connecting ring, 22, support rod, 23, long rod, 24, spring, 25, anti -backflow plate, 26, limit ring, 27, outer ring, 28, insert ring, 3, water flow filter assembly, 31, filter screen, 32, telescopic cylinder, 33, telescopic rod, 34, spring rod, 35, positioning bead, 36, positioning groove, 4, sealing assembly, 41, first sealing ring, 42, mounting ring, 43, second sealing ring. Specific embodiments

[0025] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings, and the drawings are used to supplement the description of the text part, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0026] Reference Figures 1-5 , the utility model embodiment a portable agricultural fertilization pump special anti -backflow valve device, it includes: shell 1, the inside of shell 1 is provided with anti -backflow assembly 2 and water flow filter assembly 3, and anti -backflow assembly 2 and water flow filter assembly 3 are provided with sealing assembly 4,

[0027] The water flow filtering assembly 3 comprises a telescopic cylinder 32, a filter screen 31 fixedly installed on the outer wall of the telescopic cylinder 32, a thread provided on the side wall of the filter screen 31, a thread provided on the inner wall of one end of the shell 1, a spring rod 34 fixedly installed on the inner wall of the telescopic cylinder 32, a telescopic rod 33 fixedly installed on the other end of the spring rod 34, the telescopic cylinder 32 and the telescopic rod 33 forming a telescopic driving rod, the thread of the filter screen 31 being screwed to the inner wall of one end of the shell 1, a positioning groove 36 provided on the outer wall of the telescopic rod 33, a positioning bead 35 provided on the inner wall of the opening end of the telescopic cylinder 32, the telescopic rod 33 being self-locked by the positioning bead 35 and the positioning groove 36, a limiting block fixedly installed on the bottom end of the telescopic rod 33, the telescopic rod 33 being prevented from sliding out of the telescopic cylinder 32 by the limiting block, and the telescopic rod 33 penetrating through the opening end of the telescopic cylinder 32.

[0028] The anti-reverse assembly 2 comprises an anti-reverse plate 25, a plug ring 28 fixedly installed on one side of the anti-reverse plate 25, a long rod 23 fixedly installed on the other side of the anti-reverse plate 25, a connecting ring 21 slidably installed on the other end side wall of the long rod 23, a supporting rod 22 fixedly installed on the outer wall of the connecting ring 21, the other end of the supporting rod 22 being fixedly installed on the inner wall of the shell 1, a limiting ring 26 fixedly installed on the other end of the long rod 23, a spring 24 sleeved on the outer wall of the long rod 23, one end of the spring 24 being fixedly installed on the other side of the anti-reverse plate 25, the other end of the spring 24 being fixedly installed on the outer wall of the connecting ring 21, and an outer ring 27 fixedly installed on the inner wall of the shell 1.

[0029] The sealing assembly 4 comprises a mounting ring 42 and a second sealing ring 43, the mounting ring 42 being fixedly installed on the inner wall of the shell 1, the first sealing ring 41 being fixedly installed on the outer wall of the mounting ring 42, the telescopic cylinder 32 being tightly attached to the first sealing ring 41 after the filter screen 31 is screwed, and the sealing effect of the thread of the filter screen 31 being realized, the second sealing ring 43 being fixedly installed on one side of the anti-reverse plate 25, and the second sealing ring 43 being inserted into a groove provided on the outer ring 27 to achieve the sealing effect.

[0030] Working principle: the telescopic rod 33 is first pulled outwards, the plug groove provided on the outer wall of the telescopic rod 33 being separated from the positioning bead 35 provided on the telescopic cylinder 32, the telescopic rod 33 being moved out of the telescopic cylinder 32, the side wall of the filter screen 31 being provided with a thread, the inner wall of one end of the shell 1 also being provided with a thread, the side wall of the filter screen 31 being aligned with the inner wall of one end of the shell 1, the telescopic rod 33 being rotated, the telescopic rod 33 driving the telescopic cylinder 32 to rotate through the spring rod 34, the telescopic cylinder 32 driving the filter screen 31 to rotate, the filter screen 31 being screwed to the inner wall of one end of the shell 1, and the filter screen 31 being tightly attached to the first sealing ring 41.

[0031] After the anti-backflow valve device is installed to the portable agricultural fertilization pump, the water flow passes through the anti-backflow valve device, the water flow impacts the anti-backflow plate 25 to make it displace, the anti-backflow plate 25 displaces, the anti-backflow plate 25 separates from the outer ring 27 to open the water inlet, the anti-backflow plate 25 moves to extrude the spring 24 to make it in a compressed state, after the water flow stops flowing, the anti-backflow plate 25 is not impacted any more, the anti-backflow plate 25 is reset by the elastic force of the spring 24, the anti-backflow plate 25 coincides with the outer ring 27, the second sealing ring 43 on the anti-backflow plate 25 is inserted into the sealing groove arranged on the outer ring 27, and the inserting ring 28 is inserted into the groove arranged on the outer ring 27.

[0032] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A portable agricultural fertilizer pump anti-backflow valve device comprising: The shell (1) is characterized in that the inside of the shell (1) is provided with a non-return assembly (2) and a water flow filtering assembly (3), and the non-return assembly (2) and the water flow filtering assembly (3) are provided with sealing assemblies (4). The water flow filtering assembly (3) comprises an elastic cylinder (32), a filter screen (31) is fixedly installed on the outer wall of the elastic cylinder (32), a thread is arranged on the side wall of the filter screen (31), a spring rod (34) is fixedly installed on the inner wall of the elastic cylinder (32), the other end of the spring rod (34) is fixedly installed with an elastic rod (33), a positioning groove (36) is arranged on the outer wall of the elastic rod (33), a positioning bead (35) is arranged on the inner wall of the opening end of the elastic cylinder (32), a limiting block is fixedly installed at the bottom end of the elastic rod (33), and the elastic rod (33) penetrates through the opening end of the elastic cylinder (32).

2. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 1, characterized in that, The non-return assembly (2) comprises a non-return plate (25), an insertion ring (28) is fixedly installed on one side of the non-return plate (25), and a long rod (23) is fixedly installed on the other side of the non-return plate (25).

3. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 2, characterized in that, The other end of the long rod (23) is fixedly installed with a limiting ring (26).

4. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 3, characterized in that, A spring (24) is sleeved on the outer wall of the long rod (23), one end of the spring (24) is fixedly installed on the other side of the non-return plate (25).

5. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 4, characterized in that, The other end of the spring (24) is fixedly installed on the outer wall of the connecting ring (21), and an outer ring (27) is fixedly installed on the inner wall of the shell (1).

6. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 1, characterized in that, The sealing assembly (4) comprises a mounting ring (42) and a second sealing ring (43), and the mounting ring (42) is fixedly installed on the inner wall of the shell (1).

7. A portable agricultural fertilizer pump special anti-backflow valve device according to claim 6, characterized in that, A first sealing ring (41) is fixedly installed on the outer wall of the mounting ring (42), and the second sealing ring (43) is fixedly installed on one side of the non-return plate (25).

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