Liquid pesticide bag filter

Abstract

The utility model discloses a liquid agricultural chemical bag type filter, including filter cylinder shell, the cover of filter cylinder shell has the cylinder cover and is connected with the liquid inlet, liquid outlet, in the inside welding fixed of filter cylinder shell has the installation support plate of transverse distribution, and the evenly distributed multiple internal thread interfaces have on the installation support plate, the internal thread interface forms the column body portion that protrudes to the installation support plate and is towards below, and the reinforced net basket is connected through the column body portion welding, in every reinforced net basket all inserts the filter bag, and the filter bag fixedly connected with the external thread joint, and the external thread joint is connected with internal thread interface screw thread matching, the utility model avoids the shaking situation of traditional suspension fixed reinforced net basket to happen, realizes the good protection to filter bag, and the connection of filter bag and installation support plate can not be affected by the shaking of liquid agricultural chemical flow, reduces the occurrence of abrasion condition, and then effectively maintains the sealing effect of sealing gasket at sealing point, to maintain the filtering effect of liquid agricultural chemical bag type filter.

Description

Technical Field

[0001] This utility model relates to filters, and more particularly to a bag filter for liquid pesticides. Background Technology

[0002] For liquid pesticides with good flowability, such as aqueous solutions, bag filters are typically used to remove medium-sized particulate impurities (such as undissolved active ingredient particles and adjuvant residues). Bag filters primarily utilize the pores in the filter bag to trap impurities, particles, and suspended solids. The filtered clean liquid flows through the filter bag into the filter housing and finally exits from the bottom outlet pipe. After a certain period of use, impurities accumulate inside the filter bag, requiring cleaning; therefore, filter bags are usually designed with a detachable structure. To facilitate the disassembly and cleaning of the filter bag, the common practice is to install the filter bag on a reinforcing mesh basket, and then suspend the reinforcing mesh basket to the mounting plate inside the filter housing using a quick-release hanging ring or similar structure. A seal is also required between the metal mesh basket and the mounting plate. However, while this suspension method facilitates disassembly and assembly, it makes the stability of the metal mesh basket susceptible to the influence of liquid flow, which in turn accelerates the wear of the seal between the metal mesh basket and the mounting plate, thus affecting the filter bag's performance in filtering liquids. Utility Model Content

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a liquid pesticide bag filter.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a liquid pesticide bag filter, including a filter cylinder shell, a cylinder cover covering the top opening of the filter cylinder shell, and the filter cylinder shell is connected to an inlet and an outlet respectively. Inside the filter cartridge shell, there are horizontally distributed mounting supports, and multiple internal threaded interfaces are evenly distributed on the mounting supports. The internal threaded interface has a column portion that protrudes from the mounting support plate and faces downwards, and a reinforcing mesh basket is welded to the column portion; Each reinforced basket contains a filter bag, which is fixedly connected to an external threaded connector, and the external threaded connector is threadedly matched with the internal threaded interface.

[0005] Preferably, the external threaded connector has a liquid inlet opening.

[0006] Preferably, a stepped groove is formed at the top of each internal threaded interface, and a sealing gasket is installed in the stepped groove. A sealing edge is formed by folding around the top of the external threaded connector. When an external threaded connector is threaded onto an internal threaded interface, the sealing edge is pressed against the sealing gasket.

[0007] Preferably, operating rings are symmetrically distributed above the sealing edge.

[0008] Preferably, the reinforced basket includes a connecting rod, a fixing ring, and an anti-detachment base plate; The connecting rod is connected to the cylindrical part of the internal thread interface at the top and to the anti-detachment base plate at the bottom. The anti-detachment base plate has several holes. There are multiple retaining rings, which are arranged vertically on the connecting rod.

[0009] Preferably, the cover is hinged to the filter housing, and a quick-opening clamp structure is provided between the cover and the filter housing.

[0010] Preferably, the quick-release clamp structure includes a locking buckle and a locking groove; The locking buckle is hinged on the fixing lugs around the outer side of the top opening of the filter cartridge, and the locking groove is located at the perimeter of the cartridge cover.

[0011] Preferably, the inlet is connected to a bent pipe, and the cylinder cover is provided with an inlet pipe; When the cover is closed on the filter cartridge, the liquid outlet end of the bend is connected to the liquid inlet end of the inlet pipe.

[0012] Preferably, the cylinder cover is also provided with a pressure valve mounting hole.

[0013] This utility model discloses a liquid pesticide bag filter, in which a reinforced mesh basket is fixedly mounted on a mounting support plate, avoiding the swaying that occurs with traditional suspended reinforced mesh baskets and providing excellent protection for the filter bag. The filter bag and the mounting support plate are detachably connected via an external threaded joint and an internal threaded interface, preventing them from being affected by the swaying of the liquid pesticide flow, reducing wear, and thus effectively maintaining the sealing function of the sealing gasket at the sealing points, thereby preserving the filtration effect of the liquid pesticide bag filter. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 for Figure 1 The main view.

[0016] Figure 3 This is a schematic diagram of the structure of the reinforced basket of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the filter bag of this utility model.

[0018] In the diagram: 1. Filter housing; 2. Inlet; 3. Bend; 4. Outlet; 5. Outlet end; 6. Inlet end; 7. Inlet pipe; 8. Cover; 9. Locking groove; 10. Locking buckle; 11. Fixing lug; 12. Pressure valve mounting hole; 13. Mounting support plate; 14. Internal thread interface; 14a. Column part; 15. Stepped ring groove; 16. Sealing gasket; 17. Reinforcing mesh basket; 171. Connecting rod; 172. Fixing ring; 173. Anti-detachment bottom plate; 18. Filter bag; 19. External thread interface; 20. Sealing edge; 21. Operating ring. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment discloses a liquid pesticide bag filter, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a filter housing 1, a cover 8 that can be sealed and closed with the filter housing 1 is provided at the top opening position, a liquid outlet 4 is provided at the bottom of the filter housing 1, and a liquid inlet 2 is provided on one side.

[0021] The filter housing 1 is made of 316L stainless steel, which has good mechanical strength and corrosion resistance to adapt to the working medium environment of liquid pesticide filtration; and the inner wall of the filter housing is smooth to ensure that the filtered liquid flows down smoothly.

[0022] Inlet 2 is used to feed the liquid pesticide to be filtered. Usually, the liquid pesticide is sent from inlet 2 into filter housing 1 by a pump.

[0023] A filter bag 18 and a reinforcing mesh basket 17 are installed in the internal cavity of the filter housing 1 to accommodate the filter bag installation. The liquid pesticide sent into the filter housing 1 from the inlet 2 is trapped in the inner filter bag by the filter bag 18, which traps impurities, particles and suspended solids. The filtered clear liquid settles at the bottom of the filter housing 1 under the action of gravity and finally flows out from the inlet 2.

[0024] For the reinforced Nets 17, its structural design is as follows: Figure 3 As shown, unlike traditional bag filters, the reinforcing basket 17 in this embodiment is directly mounted on the mounting support plate 13 by welding. The mounting support plate 13 is set to match the cross-sectional shape of the inner cavity of the filter housing 1, and is then distributed laterally and welded to the filter housing 1 so that the reinforcing basket 17 is fixed inside the filter housing 1.

[0025] Furthermore, such as Figure 3 and Figure 4As shown, the filter bag 18 is detachably installed on the reinforcing basket 17 and the mounting support plate 13 through a threaded joint and interface structure to meet the usage requirements of easy disassembly and cleaning of the filter bag 18.

[0026] First, such as Figure 3 As shown, multiple internal threaded interfaces 14 are evenly distributed on the mounting support plate 13. It should be noted that the specific number of internal threaded interfaces 14 is selected and set according to the diameter of the mounting support plate 13 and the aperture of the filter bag 18.

[0027] Secondly, due to the setting of the internal thread interface 14, a column portion 14a is formed on the mounting support plate 13 that protrudes from the lower surface of the mounting support plate 13 and faces downward. The column portion 14a is used to weld and connect with the reinforcing mesh basket 17. A set of filter bags 18 is placed in each reinforcing mesh basket 17. Furthermore, such as Figure 4 As shown, the filter bag 18 is fixedly connected to an external threaded connector 19, which is threadedly matched with the internal threaded interface 14.

[0028] Therefore, it can be seen that the filter bag 18 is detachably connected to the mounting support plate 13 and the reinforcing basket 17 through the threaded connection between the external threaded connector 19 and the internal threaded interface 14.

[0029] Preferably, considering the sealing performance when the external threaded connector 19 is connected to the internal threaded interface 14, such as... Figure 3 As shown, a stepped groove 15 is formed at the top opening of each internal threaded interface 14, and a sealing gasket 16 is installed in the stepped groove 15. Correspondingly, as... Figure 4 As shown, the top perimeter of the external threaded connector 19 is folded to form a sealing edge 20. When the external threaded connector 19 is threaded into the internal threaded interface 14, the sealing edge 20 presses against the sealing gasket 16, thereby compressing and sealing the sealing gasket 16 between the sealing edge 20 and the stepped ring groove 15. This allows liquid pesticides from the inlet 2 to the mounting support plate 13 to enter the filter bag 18 through the inlet opening 22 on the external threaded connector 19, thus completing the filtration of the liquid pesticides.

[0030] Furthermore, as a preferred option, such as Figure 4 As shown, operating rings 21 are symmetrically distributed above the sealing pressure edge 20. The operating rings 21 can be used with the help of auxiliary accessories such as a screwing rod to complete the screwing or unscrewing operation of the external threaded connector 19 and the internal threaded interface 14.

[0031] In addition, it should be noted that the filter bag 18 and the external threaded connector 19 need to be pre-fixed so that the filter bag 18 can be easily disassembled and assembled by relying on the assembly relationship between the external threaded connector 19 and the internal threaded interface 14.

[0032] As for the connection between the filter bag 18 and the external threaded connector 19, it is necessary to ensure that the connection between the filter bag 18 and the external threaded connector 19 will not leak unfiltered liquid pesticides. For example, a slot structure can be formed at the bottom of the external threaded connector 19, the top of the filter bag 18 can be inserted into the slot and then glued to fix it, so that the filter bag 18 and the external threaded connector 19 are firmly connected and there is no side leakage.

[0033] In summary, the liquid pesticide bag filter disclosed in this embodiment has the following technical advantages compared with the prior art: 1) The reinforced net basket is directly fixed to the mounting support plate, which keeps the reinforced net basket in a stable state at all times, avoiding the shaking of the traditional suspended reinforced net basket, and achieving good protection for the filter bag. At the same time, since there is no need to set a sealing structure between the mounting support plate and the reinforced net basket, the structure of this new type is simplified and the maintenance cost is lower. 2) The filter bag and mounting plate are detachably connected via external threaded joints and internal threaded interfaces, meeting the need for convenient disassembly and cleaning of the filter bag. Furthermore, the specific positioning and assembly relationship of the external threaded joints and internal threaded interfaces prevent them from being affected by the swaying of liquid pesticide flow, reducing wear and effectively maintaining the sealing function of the sealing gasket. This allows the liquid pesticide shell above the mounting plate to effectively enter the filter bag for filtration, maintaining the filtration effect of the liquid pesticide bag filter in this embodiment.

[0034] Example 2 This embodiment discloses a liquid pesticide bag filter, which further defines the structural configuration of the reinforced mesh basket 17 based on the structure disclosed in Embodiment 1.

[0035] like Figure 3 As shown, the internal threaded interface 14 is welded to the reinforcing basket 17 through the column part 14a. The reinforcing basket 17 includes a connecting rod 171, a fixing ring 172 and an anti-detachment bottom plate 173. The connecting rod 171 is fixedly connected to the column part 14a of the internal thread interface 14 at the top end and to the anti-detachment base plate 173 at the bottom end. Meanwhile, multiple fixing rings 172 are provided, and the multiple fixing rings 172 are arranged vertically on the connecting rod 171 and fixedly connected to the connecting rod 171.

[0036] Thus, the connecting rod 171 and multiple fixing rings 172 form a limiting protection on the side, and the anti-detachment bottom plate 173 provides support and protection at the bottom. When the filter bag 18 is threadedly connected to the inner thread interface 14 of the inner support plate 13 through the external threaded joint 19, the filter bag 18 is placed inside the reinforced basket 17 formed by the three.

[0037] Preferably, the anti-detachment bottom plate 173 has several holes to facilitate the smooth entry of the filtered liquid at the bottom into the filter housing 1.

[0038] The liquid pesticide bag filter disclosed in this embodiment utilizes a reinforced mesh basket 17 with multiple layers of fixed rings to form a reinforced mesh basket that limits and protects the filter bag. It has a liquid outlet area larger than that of ordinary pores, which facilitates the rapid outflow of the filtered liquid without affecting the smooth passage of the filter bag through the interior of the reinforced mesh basket 17.

[0039] Example 3 This embodiment discloses a liquid pesticide bag filter. Based on the structure disclosed in Embodiment 1 or Embodiment 2, firstly, regarding the setting of the cylinder cover 8, as follows: Figure 1 and Figure 2 As shown, the cover 8 is connected to the filter housing 1 by a hinged connection, and a sealing ring is provided at the top opening of the filter housing 1. Additionally, a quick-opening clamp structure is provided between the cover 8 and the filter housing 1 to meet the requirements of quick opening and sealing of the cover 8.

[0040] like Figure 1 As shown, the quick-opening clamp structure includes a locking buckle 10 and a locking groove 9. The locking buckle 10 is hinged to the fixing lugs 11 around the outer perimeter of the top opening of the filter cartridge shell 1, and the locking groove 9 is located at the perimeter of the cover 8. Thus, the cover 8 can be closed or opened by manually rotating the locking buckle 10 to engage or disengage it from the locking groove 9.

[0041] Preferably, the liquid inlet 2 uses a bend 3 and an inlet pipe 7 as a flow guiding structure, so that the liquid pesticide to be filtered pumped into the filter cartridge shell 1 falls more smoothly onto the mounting support plate 13, and then flows into each filter bag 18 for filtration.

[0042] Specifically, the inlet 2 is connected to the bend 3, and the cover 8 is provided with an inlet pipe 7 at the corresponding position. When the cover 8 is closed on the filter housing 1, the outlet end 5 of the bend is connected to the inlet end 6 of the inlet pipe 7.

[0043] Preferably, a sealing ring is provided between the contact surfaces of the liquid inlet end 6 and the liquid outlet end 5, such as... Figure 1 It can be seen that the sealing ring is preferably set at the liquid outlet 5 so that the bend 3 and the liquid inlet 7 are connected accordingly.

[0044] When the cover 8 is closed on the filter housing 1, the outlet end of the liquid inlet pipe 8 is located above the mounting support plate 13, thereby meeting the design requirements of the liquid flow direction from top to bottom during filtration.

[0045] The cap 8 is also provided with a pressure valve mounting hole 12 for installing a pressure gauge to monitor the pressure value when liquid pesticides pass through the filter bag.

[0046] Therefore, in the liquid pesticide bag filter disclosed in this utility model, the reinforced mesh basket is fixedly mounted on the mounting support plate, avoiding the swaying of the traditional suspended reinforced mesh basket and achieving good protection for the filter bag. The filter bag and the mounting support plate are detachably connected through external threaded joints and internal threaded interfaces, which is not affected by the swaying of the liquid pesticide flow, reducing wear and tear, and thus effectively maintaining the sealing function of the sealing gasket at the sealing point, effectively maintaining the filtration effect of the liquid pesticide bag filter.

[0047] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A liquid pesticide bag filter, comprising a filter housing (1), characterized in that: The top opening of the filter housing (1) is covered with a cover (8), and the filter housing (1) is connected to an inlet (2) and an outlet (4). A horizontally distributed mounting support plate (13) is welded and fixed inside the filter housing (1), and multiple internal threaded interfaces (14) are evenly distributed on the mounting support plate (13). The internal threaded interface (14) has a column portion (14a) that protrudes from the mounting support plate (13) and faces downwards, and a reinforcing mesh basket (17) is welded to the column portion (14a). A filter bag (18) is placed in each of the reinforced baskets (17), and the filter bag (18) is fixedly connected to an external threaded connector (19), which is threadedly matched with an internal threaded interface (14).

2. The liquid pesticide bag filter according to claim 1, characterized in that: The external threaded connector (19) has a liquid inlet opening (22).

3. The liquid pesticide bag filter according to claim 2, characterized in that: Each of the internal threaded interfaces (14) has a stepped ring groove (15) formed at its top, and a sealing gasket (16) is installed in the stepped ring groove (15). The top of the external threaded connector (19) is folded around to form a sealing edge (20). When the external threaded connector (19) is threaded into the internal threaded interface (14), the sealing edge (20) is pressed against the sealing gasket (16).

4. The liquid pesticide bag filter according to claim 3, characterized in that: Operating rings (21) are symmetrically distributed above the sealing edge (20).

5. The liquid pesticide bag filter according to claim 4, characterized in that: The reinforced basket (17) includes a connecting rod (171), a fixing ring (172), and an anti-detachment bottom plate (173). The connecting rod (171) is connected to the cylindrical part of the internal thread interface (14) at the top and to the anti-detachment base plate (173) at the bottom. The anti-detachment base plate (173) has several holes. The fixing rings (172) are provided in multiple ways, and the multiple fixing rings (172) are arranged vertically on the connecting rod (171).

6. The liquid pesticide bag filter according to claim 1 or 5, characterized in that: The cylinder cover (8) is hinged to the filter cylinder shell (1), and a quick-opening clamp structure is provided between the cylinder cover (8) and the filter cylinder shell (1).

7. The liquid pesticide bag filter according to claim 6, characterized in that: The quick-opening clamp structure includes a locking buckle (10) and a locking groove (9); The locking buckle (10) is hinged to the fixing lug (11) around the outer side of the top opening of the filter cylinder shell (1), and the locking groove (9) is located at the edge of the cylinder cover (8).

8. The liquid pesticide bag filter according to claim 7, characterized in that: The inlet (2) is connected to a bend (3), and the cylinder cover (8) is provided with an inlet pipe (7). When the cap (8) is closed on the filter housing (1), the liquid outlet (5) of the bent pipe is connected to the liquid inlet (6) of the liquid inlet pipe (7).

9. The liquid pesticide bag filter according to claim 8, characterized in that: The cylinder cover (8) is also provided with a pressure valve mounting hole (12).

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