Horizontal net type gravel filtering device for agricultural irrigation water

Abstract

The utility model provides an agricultural irrigation water horizontal net type gravel filtering device which comprises a tank body and a sand bed arranged in the tank body, the tank body is further provided with a first connector, a second connector and a water outlet, and the first connector and the second connector are located on the two opposite sides of the sand bed respectively. The water outlet and the first connector are located on the same side of the sand bed, and a filter screen cylinder connected with the first connector and the water outlet is arranged in the tank body. The gravel filter solves the technical problems that an existing gravel filter is complex in structure and high in cost, has the technical effects of simplifying the structure of the gravel filter and facilitating assembly and follow-up maintenance of the gravel filter, and facilitates reduction of production cost and follow-up maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field especially relates to a kind of agricultural irrigation water horizontal net type sand filter device. BACKGROUND

[0002] Sand filter is through homogeneous equal particle size quartz sand to form sand bed as filter carrier to carry out three-dimensional deep filtration filter, with strong ability to intercept dirt, suitable for deep well water filtration, agricultural water treatment, various water treatment process front pretreatment etc., can be used in factory, rural area, hotel, school, horticultural field, waterworks and various places.

[0003] The utility model discloses a sand filter for agricultural irrigation, including main jar body, water inlet, water distribution tray, sand bed, baffle, filter cap and water outlet, further including water guide assembly, water guide assembly is fixedly connected in main jar body, water guide assembly is located below baffle, and water guide assembly can guide the flow of backflush water stream introduced to water outlet to make it flow uniformly upwards.The sand filter for agricultural irrigation described above sets water guide assembly at the bottom of the main jar body to uniformly distribute backflush water, improving backflush cleaning quality.

[0004] The sand filter for agricultural irrigation disclosed in the above utility model patent adopts sand bed and filter cap arranged on the baffle for filtering, since it is necessary to fix the baffle inside the main jar body and arrange a plurality of filter caps on the baffle, the overall structure of the sand filter is complex and the installation is cumbersome, resulting in high manufacturing cost, and the filter cap is usually made of plastic, which is easy to age and damage, thus increasing the maintenance cost in later use. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a kind of agricultural irrigation water horizontal net type sand filter device, which solves the problems of complex structure and high cost of sand filter in the prior art.

[0006] According to the embodiment of the utility model, a kind of agricultural irrigation water horizontal net type sand filter device, including jar body and the sand bed being arranged in the jar body, first interface, second interface and drain outlet are further provided on the jar body, the first interface and the second interface are located at the opposite sides of the sand bed respectively, the drain outlet and the first interface are located at the same side of the sand bed and the first interface and the drain outlet are connected in the jar body with filter screen tube.

[0007] Further, first connecting pipe, second connecting pipe and water outlet pipe are further provided on the jar body, the first connecting pipe is communicated with the first interface, the second connecting pipe is communicated with the second interface, and the water outlet pipe is communicated with the drain outlet.

[0008] Further, the three-way valve and the connecting tee are connected in communication, one of the other two valve ports of the three-way valve is connected with the water inlet pipe, the other is communicated with the first connecting pipe, one of the other two pipe ports of the connecting tee is connected with the blowdown pipe, the other is communicated with the second connecting pipe, and the blowdown pipe is provided with a blowdown valve.

[0009] Further, the second connecting pipe is provided with a hydraulic gauge, and a detection end of the hydraulic gauge extends into the second connecting pipe.

[0010] Further, the second connecting pipe is provided with an air valve, and the air valve is communicated with the second connecting pipe.

[0011] Further, the tank body is further provided with a support frame, the support frame is arranged around the filter screen cylinder and is attached to the outer peripheral wall of the filter screen cylinder, and the support frame is provided with a through slot.

[0012] Further, the sand bed covers the support frame and the filter screen cylinder.

[0013] Further, the tank body is further provided with a water distribution plate, the water distribution plate is located between the second interface and the sand bed, and a plurality of through holes are arranged on the water distribution plate.

[0014] Further, the tank body is further provided with an access opening, the access opening and the second interface are located on the same side of the sand bed, the tank body is further provided with a detachable end cover, and the end cover covers the opening of the access opening.

[0015] Further, the tank body is further provided with a support, and the support is fixedly connected with the tank body.

[0016] Compared with the prior art, the sandstone filtering device has the following beneficial effects: the sand bed arranged in the tank body is used to filter irrigation water, the first interface is closed when the irrigation water is filtered, and the irrigation water is injected into the tank body from the second interface, so that the irrigation water passes through the sand bed and the filter screen cylinder in sequence and the impurities in the irrigation water are intercepted, and the filtered irrigation water is discharged from the drain port, when backwashing of the sand bed and the filter screen cylinder is needed, the drain port is closed and the washing water is injected into the tank body from the first interface, the washing water passes through the filter screen cylinder and the sand bed in sequence and is discharged from the second interface, so that the impurities on the filter screen cylinder and the sand bed are washed out of the tank body, and when backwashing, the washing water is uniformly distributed along the filter screen cylinder to the sand bed, so that the sand bed is washed clean, and when the sandstone filtering device is assembled, only the filter screen cylinder needs to be assembled into the tank body and connected with the first interface and the drain port, which solves the technical problems of complex structure and high cost of the existing sandstone filter, generates the technical effects of simplifying the structure of the sandstone filter, facilitating assembly and subsequent maintenance of the sandstone filter, and reduces production cost and subsequent maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic view of the agricultural irrigation water horizontal net type sand and stone filter device of the utility model embodiment for filtering irrigation water;

[0018] Figure 2 It is the partial sectional view of the agricultural irrigation water horizontal net type sand and stone filter device of the utility model embodiment;

[0019] Figure 3 It is the sectional view of the agricultural irrigation water horizontal net type sand and stone filter device of the utility model embodiment;

[0020] Figure 4 It is the structure schematic view of the agricultural irrigation water horizontal net type sand and stone filter device of the utility model embodiment when backwashing.

[0021] In the above drawing: 1, blowdown pipe; 2, water inlet pipe; 3, first connecting pipe; 4, three-way valve; 5, blowdown valve; 6, second connecting pipe; 7, filter screen cylinder; 8, support frame; 9, water outlet pipe; 10, water distribution plate; 11, sand bed; 12, tank body; 13, first interface; 14, second interface; 15, drain outlet; 16, connecting tee; 17, hydraulic gauge; 18, air valve; 19, slot; 20, access hole; 21, end cover; 22, support. DETAILED DESCRIPTION

[0022] The technical scheme in the utility model will be further explained in connection with the drawings and embodiments.

[0023] As Figures 1 to 4 shown, the utility model embodiment proposes an agricultural irrigation water horizontal net type sand and stone filter device for filtering agricultural irrigation water to remove impurities and dirt in irrigation water and prevent irrigation equipment from being blocked by impurities or dirt in irrigation water.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , the agricultural irrigation water horizontal net type sand and stone filter device includes a tank body 12 and a sand bed 11 arranged in the tank body 12, and a first interface 13, a second interface 14 and a drain outlet 15 are further arranged on the tank body 12, the first interface 13 and the second interface 14 are respectively located on opposite sides of the sand bed 11, the drain outlet 15 is located on the same side of the sand bed 11 as the first interface 13, and a filter screen cylinder 7 is arranged in the tank body 12 to connect the first interface 13 and the drain outlet 15.

[0025] Specifically, when the agricultural irrigation water horizontal net type sand filter device is used to filter irrigation water, the first interface 13 is closed and irrigation water is injected into the tank body 12 from the second interface 14. The irrigation water enters the tank body 12 and then passes through the sand bed 11 and the filter screen cylinder 7 in sequence. The impurities in the irrigation water are filtered by the sand bed 11 and the filter screen cylinder 7. The filtered irrigation water flows along the filter screen cylinder 7 to the water outlet 15 and is discharged out of the tank body 12. When backwashing of the filter screen cylinder 7 and the sand bed 11 in the tank body 12 is needed, the water outlet 15 is closed and washing water is injected into the tank body 12 from the first interface 13. The washing water enters the tank body 12 and then passes through the filter screen cylinder 7 and the sand bed 11 in sequence. When the washing water acts on the filter screen cylinder 7 and the sand bed 11, the retained impurities can be flushed out of the tank body 12 from the first interface 13, so as to clean the inside of the tank body 12. During the backwashing process, the washing water is uniformly distributed to the sand bed 11 along the filter screen cylinder 7, so as to ensure that the sand bed 11 is cleaned thoroughly. The agricultural irrigation water horizontal net type sand filter device provided in the embodiment replaces the partition plate and the plastic water filter cap in the existing sand filter by arranging the filter screen cylinder 7, which simplifies the overall structure of the agricultural irrigation water horizontal net type sand filter device and reduces the number of parts, facilitates assembly and subsequent maintenance of the agricultural irrigation water horizontal net type sand filter device, and the filter screen cylinder 7 can be made of stainless steel, so that the filter screen cylinder 7 has good durability and is conducive to reducing production cost and subsequent maintenance cost.

[0026] Please refer to Figure 1 , Figure 2 and Figure 4 , the tank body 12 is further provided with a first connecting pipe 3, a second connecting pipe 6 and a water outlet pipe 9. The first connecting pipe 3 is in communication with the first interface 13, the second connecting pipe 6 is in communication with the second interface 14, and the water outlet pipe 9 is in communication with the water outlet 15. The first connecting pipe 3, the second connecting pipe 6 and the third connecting pipe are arranged on the tank body 12 and are in communication with the first interface 13, the second interface 14 and the water outlet 15 respectively. The first connecting pipe 3 is used to guide washing water to enter the tank body 12 from the first interface 13. The second connecting pipe 6 is used to guide irrigation water to enter the tank body 12 from the second interface 14 and guide washing water to be discharged out of the tank body 12 from the second interface 14. The water outlet pipe 9 is used to guide filtered irrigation water to be discharged out of the tank body 12 from the water outlet 15 and guide irrigation water to be introduced into subsequent irrigation equipment, so as to ensure that irrigation water and washing water are stably input into or discharged out of the tank body 12, and facilitate improvement of stability of the agricultural irrigation water horizontal net type sand filter device during operation.

[0027] Optionally, the agricultural irrigation water horizontal screen sand and gravel filter device further comprises a three-way valve 4 and a connecting tee 16 in communication, one of the other two valve ports of the three-way valve 4 is connected with the water inlet pipe 2, and the other is communicated with the first connecting pipe 3, one of the other two pipe ports of the connecting tee 16 is connected with the blowdown pipe 1, and the other is communicated with the second connecting pipe 6, and the blowdown pipe 1 is provided with a blowdown valve 5. By setting the three-way valve 4 and the connecting tee 16 in communication, and setting the water inlet pipe 2 connected with the three-way valve 4 and the water outlet pipe 9 connected with the connecting tee 16, a water circulation flow path is formed, wherein the water inlet pipe 2 is used to connect an external water source to inject irrigation water or flushing water, and the blowdown pipe 1 is used to guide the flushing water after flushing the filter screen cylinder 7 and the sand bed 11 into a designated sewage treatment place, and the flow direction of the irrigation water or flushing water in the agricultural irrigation water horizontal screen sand and gravel filter device can be controlled by operating the three-way valve 4 and the connecting tee 16.

[0028] Specifically, when the agricultural irrigation water horizontal screen sand and gravel filter device is used to filter irrigation water, the three-way valve 4 is operated to communicate the water inlet pipe 2 with the second connecting pipe 6 and block the connection between the water inlet pipe 2 and the first connecting pipe 3, at the same time, the blowdown valve 5 is closed and the water inlet pipe 2 is connected with the water source of irrigation water, at this time, the irrigation water enters the tank 12 through the water inlet pipe 2, the three-way valve 4 and the second connecting pipe 6, and is filtered through the sand bed 11 and the filter screen cylinder 7, and then is discharged from the water outlet pipe 9; when the agricultural irrigation water horizontal screen sand and gravel filter device is backwashed, the three-way valve 4 is operated to communicate the water inlet pipe 2 with the first connecting pipe 3 and block the connection between the water inlet pipe 2 and the second connecting pipe 6, at the same time, the blowdown valve 5 is opened and the water outlet pipe 9 is closed, the water inlet pipe 2 is connected with the water source of flushing water, so that the flushing water enters the tank 12 through the water inlet pipe 2, the three-way valve 4 and the first connecting pipe 3, and then flows through the second connecting pipe 6, the blowdown valve 5 and the blowdown pipe 1 to discharge the tank 12, so as to achieve the purpose of discharging the impurities retained in the filter screen cylinder 7 and the sand bed 11 during the filtering process.

[0029] As shown in Figure 2 The second connecting pipe 6 is provided with a hydraulic pressure gauge 17, and the detection end of the hydraulic pressure gauge 17 extends into the second connecting pipe 6. The hydraulic pressure gauge 17 is used to measure the pressure in the second connecting pipe 6, so as to monitor the working state of the agricultural irrigation water horizontal screen sand and gravel filter device.

[0030] In the embodiment, the second connecting pipe 6 is provided with an air valve 18 which communicates with the second connecting pipe 6. The air valve 18 provided on the second connecting pipe 6 is used to inflate or deflate the inside of the agricultural irrigation water horizontal net type sandstone filter device, so that the air pressure in the agricultural irrigation water horizontal net type sandstone filter device is kept within an adaptive range, and the injected irrigation water or flushing water can flow smoothly in the agricultural irrigation water horizontal net type sandstone filter device.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , the tank 12 is also provided with a support frame 8 which is arranged around the filter screen cylinder 7 and is attached to the outer peripheral wall of the filter screen cylinder 7, and the support frame 8 is provided with a through slot 19. The support frame 8 is used to support the filter screen cylinder 7, so that the position of the filter screen cylinder 7 in the tank 12 remains stable, preventing the filter screen cylinder 7 from deforming and affecting the normal filtration of the agricultural irrigation water horizontal net type sandstone filter device, and the through slot 19 provided on the support frame 8 is used for irrigation water or flushing water to pass through the support frame 8, ensuring that irrigation water or flushing water can enter the filter screen cylinder 7.

[0032] Optionally, the sand bed 11 covers the support frame 8 and the filter screen cylinder 7. Covering the sand bed 11 on the support frame 8 and the filter screen cylinder 7 makes the irrigation water pass through the sand bed 11 before entering the filter screen cylinder 7, avoiding the irrigation water containing impurities directly entering the filter screen cylinder 7 and being discharged out of the tank 12, which is beneficial to improve the reliability of the agricultural irrigation water horizontal net type sandstone filter device.

[0033] As shown in Figure 1 and Figure 3 , the tank 12 is also provided with a water distribution plate 10 which is located between the second interface 14 and the sand bed 11 and is provided with a plurality of through holes on the plate. In the embodiment, the water distribution plate 10 is arranged below the second interface 14 and above the sand bed 11. After the irrigation water enters the tank 12 from the second interface 14, it first contacts the water distribution plate 10, and the irrigation water is dispersed onto the sand bed 11 under the action of the through holes on the water distribution plate 10, so that the irrigation water is uniformly distributed to the sand bed 11, thereby enhancing the filtration effect of the agricultural irrigation water horizontal net type sandstone filter device.

[0034] Optionally, the tank body 12 is further provided with an access hole 20, the access hole 20 is located at the same side of the sand bed 11 as the second interface 14, the tank body 12 is further provided with a detachable end cover 21, and the end cover 21 covers the opening of the access hole 20. After the end cover 21 is detached from the tank body 12, the inside of the tank body 12 can be observed through the access hole 20 to determine whether the agricultural irrigation water horizontal net type sand and gravel filter device needs to be overhauled, and quartz sand can also be filled into the tank body 12 from the access hole 20, which facilitates subsequent maintenance of the agricultural irrigation water horizontal net type sand and gravel filter device.

[0035] As shown in Figure 1 and Figure 2 In the present embodiment, the tank body 12 is further provided with a support 22, and the support 22 is fixedly connected with the tank body 12. The support 22 provided on the tank body 12 is used to support the tank body 12, so that the agricultural irrigation water horizontal net type sand and gravel filter device can remain stable on the working surface and prevent the agricultural irrigation water horizontal net type sand and gravel filter device from toppling over.

[0036] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. An agricultural irrigation water in-ground sand filter comprising a tank and a sand bed disposed within the tank, characterised in that: The tank body is further provided with a first interface, a second interface and a drainage port, the first interface and the second interface are respectively located at opposite sides of the sand bed, the drainage port is located at the same side of the sand bed as the first interface, and the tank body is provided with a filter screen cylinder connecting the first interface and the drainage port.

2. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 1, characterized in that: The tank body is further provided with a first connecting pipe, a second connecting pipe and a water outlet pipe, the first connecting pipe communicates with the first interface, the second connecting pipe communicates with the second interface, and the water outlet pipe communicates with the drainage port.

3. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 2, characterized in that: A three-way valve and a connecting tee are further included and communicate with each other, one of the other two valve ports of the three-way valve is connected with a water inlet pipe, and the other is communicated with the first connecting pipe, one of the other two pipe ports of the connecting tee is connected with a blowdown pipe, and the other is communicated with the second connecting pipe, and the blowdown pipe is provided with a blowdown valve.

4. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 2, characterized in that: The second connecting pipe is provided with a hydraulic pressure gauge, and a detection end of the hydraulic pressure gauge extends into the second connecting pipe.

5. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 2, characterized in that: The second connecting pipe is provided with an air valve, and the air valve communicates with the second connecting pipe.

6. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 1, characterized in that: The tank body is further provided with a support frame, the support frame is arranged around the filter screen cylinder and is attached to the outer peripheral wall of the filter screen cylinder, and the support frame is provided with a through slot.

7. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 6, characterized in that: The sand bed covers the support frame and the filter screen cylinder.

8. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 1, characterized in that: The tank body is further provided with a water distribution plate, the water distribution plate is located between the second interface and the sand bed, and a plurality of through holes are arranged on the water distribution plate at intervals.

9. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 1, characterized in that: The tank body is further provided with an access opening, the access opening and the second interface are located at the same side of the sand bed, the tank body is further provided with a detachable end cover, and the end cover covers the opening of the access opening.

10. An agricultural irrigation water lying net sand filter apparatus as claimed in claim 1, characterized in that: The tank body is further provided with a support, and the support is fixedly connected with the tank body.

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