A filtering and impurity removing device for rice insecticide production and its filtering method

Abstract

The present invention relates to the technical field of solution filtration, and discloses a filtering and impurity-removing device and a filtering method for the production of rice insecticides, including a power machine. One end of the output shaft of the power machine is fixedly installed with a rotating shaft, and the rotating shaft penetrates through the filtering container and extends into the inner cavity of the filtering container. Blades are fixedly installed at the position of the outer surface of the rotating shaft inside the filtering container. A liquid outlet hole is opened at a position near the upper part of the outer surface of the filtering container, and a filtering device is fixedly installed at a position on the inner wall of the filtering container below the liquid outlet hole. During the operation of the power machine, the blades are driven to rotate by the rotating shaft. During the rotation of the blades, the liquid inside the filtering container is driven to rotate synchronously. At the same time, the liquid inside the filtering container generates a vortex under the action of centrifugal force, the liquid level near the outside becomes higher, and the liquid level near the center becomes lower, so that this part of the liquid passes through the filter screen, and the impurities in the liquid are blocked by the filter screen during the passing process, thus achieving the filtering effect.

Description

Technical Field

[0001] The present invention relates to the technical field of solution filtration, and particularly to a filtering and impurity removing device and a filtering method for the production of rice insecticides. Background Art

[0002] In agricultural production, insecticides are used to prevent crops from being damaged by pests, which can limitedly increase the yield of crops. During the preparation of insecticides, impurities in the liquid need to be filtered, so a filtering and impurity removing device is used to process it. The common filtering and impurity removing device consists of a filtering device, a feeding device, and a liquid collecting device. During use, the liquid with impurities is transported into the container through the feeding device. When passing through the filter screen in the filtering device, the impurities in the liquid are filtered. The filtered liquid enters the liquid collecting device through the liquid collecting pipe to complete the filtration. This type of filtering and impurity removing device with this structure is the most widely used at present, and has the advantages of simple structure, convenient use, and low cost.

[0003] Although the existing filtering and impurity removing device has many above-mentioned advantages, there are still certain limitations in actual use. Since the liquid passes through from the top of the filter screen for filtration, this causes the impurities in the liquid to adhere to the top of the filter screen. At this time, the adhesion direction between the filter screen and the impurities is the same as the gravity direction of the impurities, resulting in the difficulty of removing the impurities. And under the impact of the liquid, more and more impurities will adhere to the surface of the filter screen, and finally, due to too many impurities, the filtration efficiency will be reduced. In view of this, this application document proposes a filtering and impurity removing device and a filtering method for the production of rice insecticides, aiming to solve the problems mentioned above. Summary of the Invention

[0004] In view of the deficiencies existing in the use of the existing filtering and impurity removing device and its filtering method for the production of rice insecticides in the background art, the present invention provides a filtering and impurity removing device and a filtering method for the production of rice insecticides, which have the advantage of eliminating the problem of reduced filtration efficiency caused by the adhesion of impurities, and solve the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: A filtering and impurity removing device for rice insecticide production and its filtering method, including a filtering container, characterized in that: A power machine is fixedly installed at the top of the filtering container, one end of the output shaft of the power machine is fixedly installed with a rotating shaft, the rotating shaft penetrates through the filtering container and extends into the inner cavity of the filtering container, blades are fixedly installed at a position on the outer surface of the rotating shaft inside the filtering container, a liquid outlet hole is opened at a position on the outer surface of the filtering container near the upper part, a filtering device is fixedly installed at a position on the inner wall of the filtering container below the liquid outlet hole, an annular liquid storage bin is fixedly installed at a position on the outer surface of the filtering container corresponding to the liquid outlet hole, a liquid guiding pipe is fixedly installed at the bottom of the annular liquid storage bin, one end of the liquid guiding pipe is connected to a collecting device, and the liquid guiding pipe is communicated with the inner cavity of the annular liquid storage bin, a feeding device is fixedly installed at a position on one side of the outer surface of the filtering container below the annular liquid storage bin, a drain pipe is fixedly installed at a position on the other side of the outer surface of the filtering container near the bottom, the drain pipe is communicated with the inner cavity of the filtering container, a drain pump is fixedly installed at one end of the drain pipe, and a balancing device is fixedly installed at the bottom of the filtering container.

[0006] Preferably, the filtering device includes a filter plate, a circular through hole is opened at the center of the top of the filter plate, a bearing is fixedly sleeved inside the circular through hole, the inner ring of the bearing is fixedly sleeved with the rotating shaft, an installation groove is opened at a position outside the center of the top of the filter plate, a filter net is fixedly installed inside the installation groove, and the filter plate is fixedly connected to the inner wall of the filtering container.

[0007] Preferably, the installation groove corresponds to the liquid outlet hole.

[0008] Preferably, the feeding device includes a feeding chamber, the feeding chamber is fixedly installed on one side of the outer surface of the filtering container, the inner cavity of the feeding chamber is communicated with the inner cavity of the filtering container, a partition plate is fixedly installed at the bottom of the inner cavity of the feeding chamber, the partition plate divides the inner cavity of the feeding chamber into two chambers a and b, and the tops of the two chambers are communicated with each other, a feeding pipe is fixedly installed at the bottom of the outer surface of the feeding chamber, one end of the feeding pipe is connected to a liquid supply device, the feeding pipe is communicated with chamber b inside the feeding chamber, a return pipe is fixedly installed on one side of the outer surface of the feeding chamber, one end of the return pipe is connected to a return device, and the return pipe is connected to chamber a inside the feeding chamber.

[0009] Preferably, the balancing device includes a balance chamber fixedly installed at the bottom of the outer surface of the filtering container. The inner cavity of the balance chamber is communicated with the inner cavity of the filtering container. A limiting rod is fixedly installed at the bottom of the inner cavity of the balance chamber. A travel plate is movably sleeved on the outer surface of the limiting rod near the top. A return spring is fixedly installed at the bottom of the travel plate, and the bottom of the return spring is fixedly connected to the bottom of the inner cavity of the balance chamber. A resistance inductor is fixedly installed at the bottom of the inner cavity of the balance chamber. The output end and the input end of the resistance inductor are respectively connected to the travel plate and the bottom of the return spring through wires.

[0010] Preferably, the space between the travel plate and the inner wall of the balance chamber is sealed.

[0011] Preferably, the output end of the resistance inductor is connected to the input end of the liquid discharge pump by signal connection.

[0012] The present invention has the following beneficial effects:

[0013] 1. One end of the output shaft of the power machine of the present invention is fixedly installed with a rotating shaft, which penetrates through the filtering container and extends into the inner cavity of the filtering container. Blades are fixedly installed on the outer surface of the rotating shaft at the position inside the filtering container. During the operation of the power machine, the blades will be driven to rotate by the rotating shaft. During the rotation of the blades, the liquid inside the filtering container will be driven to rotate synchronously. At the same time, the liquid inside the filtering container generates a vortex under the action of centrifugal force, making the liquid level near the outside higher and the liquid level near the center lower. An installation groove is opened at the outer side position of the top of the filter plate, and a filter net is fixedly installed inside the installation groove. Since the liquid level on the outside is higher, this part of the liquid passes through the filter net, and the impurities in the liquid are blocked by the filter net during the passing process, thus achieving the filtering effect. At the same time, the filtered liquid flows out from the liquid outlet hole under the action of centrifugal force, and the filtered liquid is transported to the collection device through the liquid guide pipe. This filtering method allows the liquid to pass through from below the filter net, so that the impurities in the liquid adhere to the bottom of the filter net, making the adhesion force direction between the impurities and the filter net opposite to the gravity direction of the impurities themselves, making it easy for the impurities to fall off. In the traditional device, since the liquid passes through from above the filter net, the adhesion force direction between the impurities and the filter net is the same as the gravity direction of the impurities themselves, and under the impact of the subsequent liquid, the impurities will firmly adhere to the surface of the filter net, resulting in blockage and a reduction in the filtering efficiency. The device involved in this application document well avoids this point and improves the filtering efficiency of the device.

[0014] 2. The present invention generates a vortex by means of the liquid inside the filtering container under the action of centrifugal force, causing the liquid level near the outer side to rise and the liquid level near the center to drop. Since the liquid inside the filtering container generates a vortex under the action of centrifugal force, the liquid will continuously impact the bottom of the filter net, enabling the debris attached to the bottom of the filter net to detach under the continuous scouring of the liquid and preventing it from adhering for a long time, thereby ensuring that the filter net remains clean and maintaining the filtering performance of the filter net at a relatively high level, so that it is no longer necessary for the user to stop the machine for cleaning, improving the practicability of the device.

[0015] 3. The present invention is provided with a partition plate fixedly installed at the bottom of the inner cavity of the feeding chamber. The partition plate divides the inner cavity of the feeding chamber into two chambers, a and b, and the tops of the two chambers are interconnected. A feeding pipe is fixedly installed at the bottom of the outer surface of the feeding chamber, and one end of the feeding pipe is connected to a liquid supply device, so that the liquid supply device pumps the unfiltered liquid into chamber b inside the feeding chamber. Since the inner cavity of the feeding chamber is connected to the inner cavity of the filtering container and the tops of chambers a and b are interconnected, the liquid level height inside the filtering container can be made the same as the liquid level height inside the feeding chamber through the principle of the communicating cavity. When the liquid level height inside the filtering container is too high, the liquid pumped in from the feeding pipe can enter the inside of the filtering container for replenishment. When the liquid level height inside the feeding chamber is too high, it can be discharged through chamber b inside the feeding chamber and the return pipe, thereby stabilizing the liquid level height inside the filtering container and ensuring that when the liquid inside the filtering container generates a vortex, the liquid level height on the outer side can exceed the filter net to achieve the filtering function, improving the stability during the operation of the device.

[0016] 4. The present invention is provided with a limiting rod fixedly installed at the bottom of the inner cavity of the balance chamber. A travel plate is movably sleeved on the outer surface of the limiting rod near the top. When the liquid level height inside the filtering container is too high, the pressure received by the top of the travel plate increases at this time. At this time, the travel plate moves along the axis direction of the limiting rod under the action of the pressure, so that the liquid inside the filtering container enters the inner cavity of the balance chamber, thereby reducing the liquid level height inside the filtering container and avoiding the problem that the filtering effect is reduced due to the liquid level height inside the filtering container being too high and submerging the filter net, improving the stability during the operation of the device.

[0017] 5. In the present invention, the output end and the input end of the resistance inductor are respectively connected to the bottom of the travel plate and the return spring through wires. When the travel plate moves along the axis direction of the limit rod, the length of the part of the limit rod connected to the circuit decreases, reducing the total resistance in the circuit. Since the output end of the resistance inductor is connected to the input end of the liquid discharge pump by signal connection, the pumping efficiency of the liquid discharge pump is controlled to increase, thereby reducing the liquid level inside the filter container until the liquid level inside the filter container drops to the normal value. At this time, the travel plate resets, the resistance value of the part of the limit rod connected to the circuit returns to normal, and at the same time, the pumping efficiency of the liquid discharge pump returns to normal, ensuring the normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a front view schematic structural diagram of the present invention;

[0020] Figure 3 is the structure of the present invention Figure 2 sectional view taken along line A-A in the structure;

[0021] Figure 4 is a schematic structural diagram of the filtering device of the present invention;

[0022] Figure 5 is a top view schematic structural diagram of the filtering device of the present invention;

[0023] Figure 6 is the structure of the present invention Figure 5 sectional view taken along line B-B in the structure;

[0024] Figure 7 is a schematic structural diagram of the feeding device of the present invention;

[0025] Figure 8 is a front view schematic structural diagram of the feeding device of the present invention;

[0026] Figure 9 is the structure of the present invention Figure 8 sectional view taken along line C-C in the structure;

[0027] Figure 10 is a schematic structural diagram of the balancing device of the present invention;

[0028] Figure 11 is a front view schematic structural diagram of the balancing device of the present invention;

[0029] Figure 12 is the structure of the present invention Figure 11 sectional view taken along line D-D in the structure.

[0030] In the figure: 1, filtering container; 2, power machine; 3, rotating shaft; 4, blade; 5, liquid outlet hole; 6, filtering device; 61, filter plate; 62, bearing; 63, installation groove; 64, filter mesh; 7, annular liquid storage bin; 8, liquid guide pipe; 9, feeding device; 91, feeding chamber; 92, partition plate; 93, feeding pipe; 94, return pipe; 10, drain pipe; 11, drain pump; 12, balancing device; 121, balancing bin; 122, limiting rod; 123, stroke plate; 124, reset spring; 125, resistance inductor. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 3 , a filtering and impurity removing device and its filtering method for the production of rice insecticides, including a filtering container 1, a power machine 2 is fixedly installed on the top of the filtering container 1, one end of the output shaft of the power machine 2 is fixedly installed with a rotating shaft 3, the rotating shaft 3 penetrates through the filtering container 1 and extends into the inner cavity of the filtering container 1, and blades 4 are fixedly installed on the outer surface of the rotating shaft 3 at a position inside the filtering container 1. During the operation of the power machine 2, the blades 4 will be driven to rotate through the rotating shaft 3. During the rotation of the blades 4, the liquid inside the filtering container 1 will be driven to rotate synchronously. At the same time, the liquid inside the filtering container 1 generates a vortex under the action of centrifugal force, making the liquid level near the outside higher and the liquid level near the center lower. A liquid outlet hole 5 is opened at a position near the upper part of the outer surface of the filtering container 1, and a filtering device 6 is fixedly installed on the inner wall of the filtering container 1 at a position below the liquid outlet hole 5. An annular liquid storage bin 7 is fixedly installed on the outer surface of the filtering container 1 at a position corresponding to the liquid outlet hole 5. A liquid guide pipe 8 is fixedly installed at the bottom of the annular liquid storage bin 7. One end of the liquid guide pipe 8 is connected to a collection device, and the liquid guide pipe 8 is communicated with the inner cavity of the annular liquid storage bin 7. A feeding device 9 is fixedly installed on one side of the outer surface of the filtering container 1 at a position below the annular liquid storage bin 7. A drain pipe 10 is fixedly installed on the other side of the outer surface of the filtering container 1 near the bottom. The drain pipe 10 is communicated with the inner cavity of the filtering container 1. A drain pump 11 is fixedly installed at one end of the drain pipe 10. A balancing device 12 is fixedly installed at the bottom of the filtering container 1.

[0033] Please refer to Figures 1 - 6, the filtering device 6 includes a filter plate 61. A circular through-hole is provided at the center of the top of the filter plate 61. A bearing 62 is fixedly sleeved inside the circular through-hole. The inner ring of the bearing 62 is fixedly sleeved with the rotating shaft 3. An installation groove 63 is provided at the outer side of the top of the filter plate 61. A filter net 64 is fixedly installed inside the installation groove 63. Since the liquid level on the outer side becomes higher, this part of the liquid passes through the filter net 64. During the passing process, the impurities in the liquid are blocked by the filter net 64, thus achieving the filtering effect. At the same time, the filtered liquid flows out from the liquid outlet hole 5 under the action of centrifugal force. The filtered liquid is transported to the collecting device through the liquid guiding pipe 8. This filtering method allows the liquid to pass through from below the filter net 64, so that the impurities in the liquid adhere to the bottom of the filter net 64. The adhesion force direction between the impurities and the filter net 64 is opposite to the gravity direction of the impurities themselves, making it easy for the sundries to fall off. In the traditional device, since the liquid passes through from above the filter net 64, the adhesion force direction between the impurities and the filter net 64 is the same as the gravity direction of the impurities themselves. Under the impact of the subsequent liquid, the impurities will firmly adhere to the surface of the filter net 64, resulting in blockage and a reduction in the filtering efficiency. The device involved in this application document well avoids this point and improves the filtering efficiency of the device. Since the liquid inside the filtering container 1 generates a vortex under the action of centrifugal force, the liquid continuously impacts the bottom of the filter net 64, so that the sundries attached to the bottom of the filter net 64 can be detached under the continuous scouring of the liquid and cannot adhere for a long time, thus ensuring that the filter net 64 can remain clean and keeping the filtering performance of the filter net 64 at a relatively high level, so that it is no longer necessary for the user to stop the machine for cleaning, improving the practicability of the device. The filter plate 61 is fixedly connected to the inner wall of the filtering container 1.

[0034] Please refer to Figures 1 - 6 , the installation groove 63 corresponds to the liquid outlet hole 5.

[0035] Please refer to Figures 1 - 9, the feeding device 9 includes a feeding chamber 91 which is fixedly installed on one side of the outer surface of the filtering container 1. The inner cavity of the feeding chamber 91 is communicated with the inner cavity of the filtering container 1. A partition plate 92 is fixedly installed at the bottom of the inner cavity of the feeding chamber 91. The partition plate 92 divides the inner cavity of the feeding chamber 91 into two chambers a and b, and the tops of the two chambers are communicated with each other. A feeding pipe 93 is fixedly installed at the bottom of the outer surface of the feeding chamber 91. One end of the feeding pipe 93 is connected to a liquid supply device, so that the liquid supply device pumps the unfiltered liquid into the chamber b inside the feeding chamber 91. Since the inner cavity of the feeding chamber 91 is communicated with the inner cavity of the filtering container 1, and the tops of the two chambers a and b are communicated with each other, the liquid level height inside the filtering container 1 can be made the same as the liquid level height inside the feeding chamber 91 through the principle of the communicating cavity. When the liquid level height inside the filtering container 1 is too high, the liquid pumped in from the feeding pipe 93 can enter the inside of the filtering container 1 for supplement. When the liquid level height inside the feeding chamber 91 is too high, it can be discharged through the chamber b inside the feeding chamber 91 and the return pipe 94, thereby stabilizing the liquid level height inside the filtering container 1 and ensuring that when the liquid inside the filtering container 1 generates a vortex, the liquid level height on the outside can exceed the filter screen 64 to achieve the filtering function, improving the stability during the operation of the device. The feeding pipe 93 is communicated with the chamber b inside the feeding chamber 91. A return pipe 94 is fixedly installed on one side of the outer surface of the feeding chamber 91. One end of the return pipe 94 is connected to a return device, and the return pipe 94 is connected to the chamber a inside the feeding chamber 91.

[0036] Please refer to Figures 1 - 6 and Figures 10 - 12, the balancing device 12 includes a balancing chamber 121 which is fixedly installed at the bottom of the outer surface of the filtering container 1. The inner cavity of the balancing chamber 121 is communicated with the inner cavity of the filtering container 1. A limiting rod 122 is fixedly installed at the bottom of the inner cavity of the balancing chamber 121. A travel plate 123 is movably sleeved on the outer surface of the limiting rod 122 near the top. When the liquid level height inside the filtering container 1 is too high, the pressure received by the top of the travel plate 123 at this time increases. At this time, the travel plate 123 moves along the axis direction of the limiting rod 122 under the action of the pressure, so that the liquid inside the filtering container 1 enters the inner cavity of the balancing chamber 121, thereby reducing the liquid level height inside the filtering container 1, avoiding the problem that the liquid level height inside the filtering container 1 is too high and submerges the filter screen 64, resulting in a reduction in the filtering effect, and improving the stability during the operation of the device. A return spring 124 is fixedly installed at the bottom of the travel plate 123, and the bottom of the return spring 124 is fixedly connected to the bottom of the inner cavity of the balancing chamber 121. A resistance inductor 125 is fixedly installed at the bottom of the inner cavity of the balancing chamber 121. The output end and the input end of the resistance inductor 125 are respectively connected to the bottom of the travel plate 123 and the bottom of the return spring 124 through wires. When the travel plate 123 moves along the axis direction of the limiting rod 122, the length of the part of the limiting rod 122 connected to the circuit decreases, and the total resistance in the circuit decreases.

[0037] Please refer to Figures 10 - 12 , the space between the travel plate 123 and the inner wall of the balancing chamber 121 is sealed.

[0038] Please refer to Figures 1 - 3 and Figures 10 - 12 , the output end of the resistance inductor 125 is connected to the input end of the liquid discharge pump 11 by signal connection, so as to control the liquid discharge pump 11 to improve the pumping efficiency, thereby reducing the liquid level inside the filtering container 1 until the liquid level inside the filtering container 1 drops to the normal value. At this time, the travel plate 123 resets, the resistance value of the part of the limiting rod 122 connected to the circuit returns to normal, and at the same time, the pumping efficiency of the liquid discharge pump 11 returns to normal, ensuring that the device can operate normally.

[0039] The usage method of the present invention is as follows:

[0040] During use, when the power machine 2 drives the blade 4 to rotate, the liquid inside the filter container 1 is driven to rotate synchronously. At the same time, the liquid inside the filter container 1 generates a vortex under the action of centrifugal force, causing the liquid level near the outside to rise and the liquid level near the center to drop. Since the liquid level near the outside rises, this part of the liquid passes through the filter mesh 64. During the passing process, the impurities in the liquid are blocked by the filter mesh 64, thus achieving the filtering effect. At the same time, the filtered liquid flows out from the liquid outlet hole 5 under the action of centrifugal force, and the filtered liquid is transported to the collection device through the liquid guide pipe 8. This filtering method allows the liquid to pass through from below the filter mesh 64, so that the impurities in the liquid adhere to the bottom of the filter mesh 64, making the adhesion force direction of the impurities to the filter mesh 64 opposite to the direction of the self-gravity of the impurities, making it easy for the sundries to fall off. Since the liquid inside the filter container 1 generates a vortex under the action of centrifugal force, the liquid will continuously impact the bottom of the filter mesh 64, enabling the sundries attached to the bottom of the filter mesh 64 to break away under the continuous scouring of the liquid and preventing them from adhering for a long time, thereby ensuring that the filter mesh 64 can remain clean and keeping the filtering performance of the filter mesh 64 at a relatively high level. The liquid supply device pumps the unfiltered liquid into the b chamber inside the feeding chamber 91. Since the inner cavity of the feeding chamber 91 is connected to the inner cavity of the filter container 1, and the tops of the a and b chambers are interconnected, the liquid level height inside the filter container 1 can be made the same as the liquid level height inside the feeding chamber 91 through the principle of the communicating chamber. When the liquid level height inside the filter container 1 is too high, the liquid pumped in from the feeding pipe 93 can enter the inside of the filter container 1 for replenishment. When the liquid level height inside the feeding chamber 91 is too high, it can be discharged through the b chamber and the reflux pipe 94 inside the feeding chamber 91, thereby stabilizing the liquid level height inside the filter container 1. When the liquid level height inside the filter container 1 is too high, the pressure received by the top of the travel plate 123 increases at this time. At this time, the travel plate 123 moves along the axis direction of the limit rod 122 under the action of the pressure, so that the liquid inside the filter container 1 enters the inner cavity of the balance chamber 121, thereby reducing the liquid level height inside the filter container 1. During the process of the travel plate 123 moving along the axis direction of the limit rod 122, the length of the part of the limit rod 122 connected to the circuit decreases, reducing the total resistance in the circuit. The output end of the resistance inductor 125 is connected to the input end of the drain pump 11 through a signal connection method, thereby controlling the drain pump 11 to increase the pumping efficiency, thus reducing the liquid level inside the filter container 1 until the liquid level inside the filter container 1 drops to the normal value.

[0041] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering and impurity removing device for rice insecticide production, comprising a filtering container (1), characterized in that: A power machine (2) is fixedly installed at the top of the filtering container (1). One end of the output shaft of the power machine (2) is fixedly installed with a rotating shaft (3). The rotating shaft (3) penetrates through the filtering container (1) and extends into the inner cavity of the filtering container (1). Blades (4) are fixedly installed at a position on the outer surface of the rotating shaft (3) inside the filtering container (1). A liquid outlet hole (5) is formed in the outer surface of the filtering container (1) near the upper part. A filtering device (6) is fixedly installed at a position on the inner wall of the filtering container (1) below the liquid outlet hole (5). An annular liquid storage bin (7) is fixedly installed at a position on the outer surface of the filtering container (1) corresponding to the liquid outlet hole (5). A liquid guide pipe (8) is fixedly installed at the bottom of the annular liquid storage bin (7). The liquid guide pipe (8) is communicated with the inner cavity of the annular liquid storage bin (7). A feeding device (9) is fixedly installed at a position on one side of the outer surface of the filtering container (1) below the annular liquid storage bin (7). A drain pipe (10) is fixedly installed at a position on the other side of the outer surface of the filtering container (1) near the bottom. The drain pipe (10) is communicated with the inner cavity of the filtering container (1). A drain pump (11) is fixedly installed at one end of the drain pipe (10). A balancing device (12) is fixedly installed at the bottom of the filtering container (1); The filtering device (6) includes a filter plate (61). A circular through hole is formed in the center of the top of the filter plate (61). A bearing (62) is fixedly sleeved inside the circular through hole. The inner ring of the bearing (62) is fixedly sleeved with the rotating shaft (3). An installation groove (63) is formed at a position on the outer side of the top of the filter plate (61). A filter net (64) is fixedly installed inside the installation groove (63). The filter plate (61) is fixedly connected with the inner wall of the filtering container (1); The feeding device (9) includes a feeding chamber (91). The feeding chamber (91) is fixedly installed on one side of the outer surface of the filtering container (1). The inner cavity of the feeding chamber (91) is communicated with the inner cavity of the filtering container (1). A partition plate (92) is fixedly installed at the bottom of the inner cavity of the feeding chamber (91). The partition plate (92) divides the inner cavity of the feeding chamber (91) into two chambers, namely chamber a and chamber b. The tops of the two chambers are communicated with each other. A feeding pipe (93) is fixedly installed at the bottom of the outer surface of the feeding chamber (91). The feeding pipe (93) is communicated with chamber b inside the feeding chamber (91). A reflux pipe (94) is fixedly installed on one side of the outer surface of the feeding chamber (91). The reflux pipe (94) is connected with chamber a inside the feeding chamber (91); The balance device (12) includes a balance chamber (121), the balance chamber (121) is fixedly installed at the bottom of the outer surface of the filter container (1), the inner cavity of the balance chamber (121) is communicated with the inner cavity of the filter container (1), a limiting rod (122) is fixedly installed at the bottom of the inner cavity of the balance chamber (121), a travel plate (123) is movably sleeved on the outer surface of the limiting rod (122) near the top, a return spring (124) is fixedly installed at the bottom of the travel plate (123), the bottom of the return spring (124) is fixedly connected with the bottom of the inner cavity of the balance chamber (121), a resistance inductor (125) is fixedly installed at the bottom of the inner cavity of the balance chamber (121), and the output end and the input end of the resistance inductor (125) are respectively connected with the travel plate (123) and the bottom of the return spring (124) through wires; The output end of the resistance inductor (125) is connected with the input end of the liquid discharge pump (11) in a signal connection manner.

2. The filtering and impurity removing device for producing rice insecticide according to claim 1, characterized in that: The installation groove (63) corresponds to the liquid outlet hole (5).

3. A filtering and impurity removing device for rice insecticide production according to claim 1, characterized in that: A sealing treatment is performed between the travel plate (123) and the inner wall of the balance chamber (121).

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