Manual backwashing filter

Abstract

The utility model discloses a manual backwash filter, relates to the technical field of backwash filters, and aims to solve the problems that the conventional manual backwash filter adopts a handle or a knob and the like to carry out backwash operation, and the handle is possibly touched by mistake under the condition that an operator does not pay attention in the actual use process, so that unnecessary backwash operation is caused, and the backwash efficiency is high. The utility model relates to a filter, in particular to a filter, which solves the problems that some dirt difficult to wash still can be remained in the filter after long-term use, and the filtering effect is influenced, and comprises an inlet block and an outlet block, a valve body assembly and a filter cartridge are arranged between the inlet block and the outlet block, one end of the valve body assembly is connected with the inlet block, and the other end of the valve body assembly is connected with the outlet block through the filter cartridge; the inlet block, the valve body assembly and the outlet block are connected through the long screw, by arranging the locking assembly, misoperation of the handle is effectively limited, unnecessary backwashing is avoided, the filtering efficiency and the water resource utilization rate are improved, and meanwhile equipment damage possibly caused by misoperation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of backwash filter technology, and in particular to a manual backwash filter. Background Technology

[0002] Backwash filters restore filtration performance by periodically backwashing the filter element to remove trapped dirt. Compared to traditional filters that require manual disassembly, cleaning, or replacement of the filter element, backwash filters offer advantages such as ease of operation and long maintenance cycles. Chinese patent CN202420778288.4 discloses a mining-grade backwash filter where the flow direction of water inside the device can be controlled by rotating an adjustment component, thereby controlling backwashing. Since the entire device relies on the cooperation between fixed components to achieve its function, it does not require external energy, resulting in lower operating costs and improved efficiency. However, existing manual backwash filters use a handle to adjust the filter's filtration or backwashing status. In actual use, especially in confined spaces or when operators are not paying attention, the handle may be accidentally touched, leading to unnecessary backwashing operations, affecting filtration efficiency and water resource utilization. Other objects around the equipment may also interfere with the handle, causing misoperation or even damage to the equipment. Even after backwashing, after long-term use, some difficult-to-wash dirt may still remain inside the filter element or other filter components, affecting the filtration effect.

[0003] Therefore, this application provides a manual backwash filter to meet the requirements. Utility Model Content

[0004] The purpose of this application is to provide a manual backwash filter, aiming to solve the problem that existing manual backwash filters use handles or knobs for backwashing. In actual use, especially in confined spaces or when operators are not paying attention, the handle may be accidentally pressed, leading to unnecessary backwashing operations, affecting filtration efficiency and water resource utilization. Other objects around the equipment may also interfere with the handle, causing misoperation or even damage to the equipment. Even after backwashing, after long-term use, some difficult-to-wash dirt may still remain inside the filter element or other filter components, affecting the filtration effect.

[0005] To achieve the above objectives, this application provides the following technical solution: a manual backwash filter, comprising an inlet block and an outlet block, with a valve body assembly and a filter cartridge disposed between the inlet block and the outlet block. One end of the valve body assembly is connected to the inlet block, and the other end of the valve body assembly is connected to the outlet block via the filter cartridge. The inlet block, the valve body assembly, and the outlet block are connected by a long screw, which is fixed by bolts. The valve body assembly and the outlet block are connected by a short screw, the short screw being matched to the size of the filter cartridge, which contains a filter element. The valve body assembly also contains a ball valve, which is connected to a locking component via a connecting rod, allowing the equipment to be easily and quickly switched to the backwash state.

[0006] Preferably, the valve body assembly is provided with water passage holes and ball grooves. There are multiple sets of water passage holes, and the positions of the water passage holes are adapted to the positions of the filter cartridges. Multiple sets of guide holes connected to the water passage holes are provided in the ball grooves. The ball grooves are adapted to the ball valves, so that the filter can control the internal liquid flow direction.

[0007] Preferably, the valve body assembly is further provided with a mounting hole adapted to the connecting rod, and a plug is provided in the mounting hole. A drain port is provided below the mounting hole, and the drain port is connected to the inlet block through the connecting hole and the ball groove to facilitate the discharge of residue.

[0008] Preferably, both the inlet block and the outlet block are provided with diversion holes, which are adapted to the position and size of the filter cartridge. The diversion holes on the inlet block are connected to the ball groove through connecting holes to improve the filtration efficiency of the filter.

[0009] Preferably, the inlet block has a first pressure measuring hole and a second pressure measuring hole on both sides, and the second pressure measuring hole has multiple sets. The outlet block has a third pressure measuring hole and a fourth pressure measuring hole on both sides, and the fourth pressure measuring hole has multiple sets. All the pressure measuring holes are equipped with ED plugs, which can measure pressure and assist in flushing when the filter is disassembled for major repair.

[0010] Preferably, the locking assembly further includes a rotating block and a handle. The handle is connected to the valve body assembly via a fixing block. A locking block is connected to the rotating block. One end of the handle is connected to the rotating block via a connecting rod. The handle is engaged with a limit block. A groove adapted to the rotating block is provided in the connecting rod. The depth of the groove is greater than the length of the rotating block. A retaining ring is installed in the groove. A retaining groove adapted to the locking block is provided on the retaining ring, so that the position of the handle is protected.

[0011] Preferably, a stop block is connected to the handle via a torsion spring, and the handle is engaged with a limiting block via the stop block. The limiting block has a limiting groove that matches the handle and the stop block, so that the handle is locked.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] In this invention, by setting a locking component, the misoperation of the handle is effectively limited, unnecessary backwashing is avoided, the filtration efficiency and water resource utilization rate are improved, and the equipment damage that may be caused by misoperation is also reduced.

[0014] In this invention, the pressure testing holes allow for rinsing assistance during complete cleaning of the filter, resulting in more thorough cleaning, significantly improved cleaning efficiency, and reduced maintenance time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a first cross-sectional view of the present invention.

[0020] Figure 5 This is an enlarged view of point A in this utility model;

[0021] Figure 6 This is a second cross-sectional view of the present invention.

[0022] Figure 7 This is an enlarged schematic diagram of the handle structure of this utility model.

[0023] In the diagram: 1. Inlet block; 2. Valve body assembly; 3. Filter cartridge; 4. Outlet block; 5. Locking assembly; 6. Long screw; 7. Short screw; 8. Diverter hole; 11. First pressure test hole; 12. Second pressure test hole; 21. Water passage hole; 22. Ball groove; 23. Plug; 24. Drain outlet; 41. Third pressure test hole; 42. Fourth pressure test hole; 51. Ball valve; 52. Connecting rod; 53. Fixing block; 54. Handle; 55. Limiting block; 56. Rotating block; 57. Locking block; 58. Stopping block; 59. Snap ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0025] refer to Figure 1-7 The manual backwash filter shown includes an inlet block 1 and an outlet block 4. A valve body assembly 2 and a filter cartridge 3 are disposed between the inlet block 1 and the outlet block 4. One end of the valve body assembly 2 is connected to the inlet block 1, and the other end of the valve body assembly 2 is connected to the outlet block 4 through the filter cartridge 3. This allows liquid to pass through the inlet block 1, through the valve body assembly 2, and be filtered by the filter element in the filter cartridge 3, before being output through the outlet block 4. The inlet block 1, valve body assembly 2, and outlet block 4 are connected by a long screw 6, which is fixed by bolts, making the filter installation more secure and convenient. The valve body assembly 2 is connected to the outlet block 4 by a short screw 7. The short screw 7 matches the size of the filter cartridge 3, allowing the outlet block 4 and the valve body assembly 2 to clamp and fix the filter cartridge 3 in advance by the short screw 7, making the assembly of the filter more convenient and quick. The valve body assembly 2 is also equipped with a ball valve 51, which is used to control the flow direction of water, allowing the filter to switch between filtration and backwashing states. The ball valve 51 is connected to a locking component 5 via a connecting rod 52, which is used to prevent unnecessary state switching caused by accidental contact during the operation of the filter.

[0026] In one embodiment of this invention, the valve body assembly 2 is provided with water passage holes 21 and ball grooves 22. Multiple sets of water passage holes 21 are provided, their positions matching the positions of the filter cartridges 3. Two sets of filter cartridges 3 are provided to ensure that water flows evenly through them while improving filtration efficiency. Multiple sets of guide holes connected to the water passage holes 21 are provided in the ball grooves 22 to guide the flow of water in the filter. The ball grooves 22 are adapted to the ball valve 51, ensuring that the ball valve 51 can effectively control the opening and closing of the guide holes. The valve body assembly 2 is also provided with mounting holes adapted to the connecting rod 52. The connecting rod 52 is mounted on one side of the mounting hole, and a plug 23 is mounted on the other side. A drain port 24 is provided below the mounting hole for discharging backwashed waste. The drain port 24 passes through the ball grooves 22 via a connecting hole and is connected to the inlet block 1, forming a... The channels that guide the liquid flow during backwashing are provided with diversion holes 8 on both the inlet block 1 and the outlet block 4. The diversion holes 8 are adapted to the position and size of the filter cartridge 3 to ensure normal water output. The diversion holes 8 on the inlet block 1 are connected to the ball groove 22 through connecting holes to ensure normal water input. The first pressure measuring hole 11 and the second pressure measuring hole 12 are provided on both sides of the inlet block 1. The second pressure measuring hole 12 has multiple sets. The third pressure measuring hole 41 and the fourth pressure measuring hole 42 are provided on both sides of the outlet block 4. The fourth pressure measuring hole 42 has multiple sets. They are used to detect the pressure at the inlet and outlet of the filter to determine the clogging status of the filter element so as to perform backwashing in time. Each of the above pressure measuring holes is equipped with an ED plug. The ED plug is used to close the pressure measuring hole when no pressure detection is performed. At the same time, when the filter is disassembled and completely cleaned, the above pressure measuring holes play an auxiliary flushing role.

[0027] In one embodiment of this invention, the locking component 5 further includes a rotating block 56 and a handle 54. The handle 54 is connected to the valve body assembly 2 via a fixing block 53. A locking block 57 is connected to the rotating block 56. One end of the handle 54 is connected to the rotating block 56 via a connecting rod 52. By rotating the handle 54, the connecting rod 52 and the rotating block 56 are rotated, thereby causing the ball valve 51 to control the flow direction of fluid in the valve body assembly 2. The handle 54 is engaged with a limit block 55 to limit the rotation position of the handle 54 and realize the locking function. A groove adapted to the rotating block 56 is provided in the connecting rod 52, and the depth of the groove is greater than that of the rotating block 56. The length of the rod is 6 to ensure that the rotating block 56 can rotate freely in the groove. A retaining ring 59 is installed in the groove. The retaining ring 59 has a retaining groove that matches the retaining block 57 to connect the connecting rod 52 and the rotating block 56 together. A stop block 58 is connected to the handle 54 through a torsion spring. The handle 54 is engaged with the limit block 55 through the stop block 58. The limit block 55 has a limit groove that matches the handle 54 and the stop block 58. The limit groove is used to limit the movement trajectory of the stop block 58. The torsion spring provides a restoring force so that the stop block 58 can automatically rotate into the limit groove of the limit block 55 after being released, ensuring the reliability of the locking function.

[0028] The working principle of this product is as follows: During use, the liquid first enters the filter through the inlet on the inlet block 1. The liquid then enters the valve body assembly 2 through the diversion hole 8. In the normal state, the ball valve 51 in the valve body assembly 2 blocks the drain port 24. The liquid is then guided through the guide hole in the valve body assembly 2 to the water passage hole 21. The liquid then enters the filter cartridge 3 through the water passage hole 21. The filter element in the filter cartridge 3 filters the liquid. After filtration, the liquid flows to the diversion hole 8 on the outlet block 4 and is output through the outlet on the outlet block 4, thus completing the filtration and output of the liquid.

[0029] When backwashing the filter is required, the operator first rotates the stop block 58 connected to the handle 54, causing the stop block 58 to rotate 90 degrees within the limiting groove of the limiting block 55, making the stop block 58 perpendicular to the handle 54. Then, the handle 54 and the stop block 58 are pulled outward from the limiting block 55. The handle 54 drives the rotating block 56 and the locking block 57 to move outward from the filter, causing the locking block 57 to move into the locking groove of the retaining ring 59. Then, the handle 54 is rotated 90 degrees around the rotating block 56 as the axis. The rotating block 56 drives the retaining ring 59 to rotate synchronously through the locking block 57. The retaining ring 59 drives the ball valve 51 to rotate through the connecting rod 52, so that the ball valve 51 no longer blocks the drain port 24. Then, the outlet port on the outlet block 4 is closed, and the liquid enters from the inlet port of the inlet block 1. The liquid enters the valve through the diversion hole 8. In valve body assembly 2, liquid is guided through the guide hole to the water inlet 21. The liquid is then fed into the filter cartridge 3 through the water inlet 21. The filter element in the filter cartridge 3 filters the liquid. After filtration, the liquid flows to the diversion hole 8 on the outlet block 4. Because the outlet of the outlet block 4 is closed and the ball valve 51 in valve body assembly 2 no longer blocks the drain port 24, the liquid flows in reverse and is output through the drain port 24 in valve body assembly 2. At the same time, the filter residue in the filter is carried away by the filter. Then, the ball valve 51 can be reset by rotating the handle 54. At the same time, the handle 54 and the stop block 58 on the handle 54 are pushed and rotated, so that the handle 54 and the stop block 58 are reset to the limit block 55, so as to avoid accidental contact caused by the handle 54 interfering with the personnel or other equipment when the filter is working.

[0030] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0031] Components not described in detail in this article are existing technologies.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manually backwashed filter, characterized in that: It includes an inlet block (1) and an outlet block (4). A valve body assembly (2) and a filter cartridge (3) are provided between the inlet block (1) and the outlet block (4). One end of the valve body assembly (2) is connected to the inlet block (1), and the other end of the valve body assembly (2) is connected to the outlet block (4) through the filter cartridge (3). The inlet block (1), the valve body assembly (2) and the outlet block (4) are connected by a long screw (6), which is fixed by bolts. The valve body assembly (2) is connected to the outlet block (4) by a short screw (7), the short screw (7) is matched with the size of the filter cartridge (3), and the filter cartridge (3) is provided with a filter element; The valve body assembly (2) is also provided with a ball valve (51), which is connected to a locking assembly (5) via a connecting rod (52).

2. A manual backwashing filter according to claim 1, characterized in that: The valve body assembly (2) is provided with a water passage hole (21) and a ball groove (22). The water passage hole (21) is provided in multiple sets. The position of the water passage hole (21) is adapted to the position of the filter cartridge (3). The ball groove (22) is provided with multiple sets of guide holes connected to the water passage hole (21). The ball groove (22) is adapted to the ball valve (51).

3. A manual backwashing filter according to claim 2, characterized in that: The valve body assembly (2) is also provided with an installation hole that is compatible with the connecting rod (52). The installation hole is also provided with a plug (23). A drain port (24) is provided below the installation hole. The drain port (24) is connected to the inlet block (1) through the ball groove (22) via a connecting hole.

4. A manual backwashing filter according to claim 3, characterized in that: Both the inlet block (1) and the outlet block (4) are provided with diversion holes (8). The diversion holes (8) are adapted to the position and size of the filter cartridge (3). The diversion holes (8) on the inlet block (1) are connected to the ball groove (22) through connecting holes.

5. A manual backwash filter according to claim 4, characterized in that: The inlet block (1) has a first pressure measuring hole (11) and a second pressure measuring hole (12) on both sides. The second pressure measuring hole (12) has multiple sets. The outlet block (4) has a third pressure measuring hole (41) and a fourth pressure measuring hole (42) on both sides. The fourth pressure measuring hole (42) has multiple sets. Each of the above pressure measuring holes is equipped with an ED plug.

6. A manual backwash filter according to claim 3, characterized in that: The locking assembly (5) further includes a rotating block (56) and a handle (54). The handle (54) is connected to the valve body assembly (2) via a fixing block (53). A locking block (57) is connected to the rotating block (56). One end of the handle (54) is connected to the rotating block (56) via a connecting rod (52). The handle (54) engages with a limit block (55). A groove adapted to the rotating block (56) is provided in the connecting rod (52). The depth of the groove is greater than the length of the rotating block (56). A retaining ring (59) is installed in the groove. A retaining groove adapted to the locking block (57) is provided on the retaining ring (59).

7. A manual backwash filter according to claim 6, characterized in that: The handle (54) is connected to a stop (58) by a torsion spring. The handle (54) is engaged with the limiting block (55) through the stop (58). The limiting block (55) has a limiting groove that is compatible with the handle (54) and the stop (58).

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