Chemical pump filter capable of being maintained on line

Abstract

The utility model relates to a chemical pump filter capable of being maintained on line, and belongs to the technical field of chemical equipment in the chemical industry. According to the technical scheme, the filter comprises a valve element (1), a sealing cap (2), a connecting bolt (3), a handle (4), a shell (5), a filter cavity (6), a large filter screen (7), a cavity cover (8) and a small filter screen (11), the large filter screen (7) is arranged in the filter cavity (6), the small filter screen (11) is arranged in the valve element (1), the valve element (1) is arranged in the shell (5), the sealing cap (2) is arranged at the upper end of the shell (5), the handle (4) penetrates through the sealing cap (2) to be connected with the valve element (1), and the lower end of the shell (5) is in threaded connection with the upper end of the filter cavity (6). A cavity cover (8) is arranged at the lower end of the filter cavity (6). The utility model has the beneficial effects that when the large filter screen is blocked, the small filter screen is used by rotating the handle, then the large filter screen can be dismounted on line for cleaning, otherwise, the small filter screen can be cleaned, and the equipment does not stop during the cleaning of the filter screen.

Description

Technical Field

[0001] This utility model relates to a chemical pump filter that can be maintained online, belonging to the technical field of chemical equipment in the chemical industry. Background Technology

[0002] Chemical pumps used in the chemical industry, especially those requiring continuous dosing, generally need to be equipped with filters at the pump inlet. When the filter becomes clogged, the pump must be stopped or a backup pump must be used, which greatly increases the workload and is not conducive to the continuous and stable dosing requirements of the process. Utility Model Content

[0003] The purpose of this invention is to provide a chemical pump filter that can be maintained online. When the large filter screen is clogged, a smaller filter screen can be used by rotating the handle, and then the large filter screen can be removed online for cleaning. Conversely, the small filter screen can also be cleaned online. The equipment can be shut down during the filter cleaning process, thus solving the problems existing in the background technology.

[0004] The technical solution of this utility model is:

[0005] An online maintainable chemical pump filter includes a valve core, a cap, connecting bolts, a handle, a housing, a filter chamber, a large filter screen, a chamber cover, and a small filter screen. The large filter screen is located inside the filter chamber, the small filter screen is located inside the valve core, the valve core is located inside the housing, the upper end of the housing is provided with a cap, the handle passes through the cap and connects to the valve core, the lower end of the housing is threadedly connected to the upper end of the filter chamber, and the lower end of the filter chamber is provided with a chamber cover.

[0006] The valve core is cylindrical, and two pairs of symmetrical blind holes are provided on the upper and lower end faces of the valve core, one pair of blind holes opening downwards and the other pair of blind holes opening upwards.

[0007] The filter chamber is provided with through hole a and through hole b, and the two downward-facing blind holes on the valve core correspond to through hole a and through hole b on the filter chamber, respectively.

[0008] The valve core has radial side holes on both sides, and the housing has a pipe thread interface a. The radial side holes on both sides of the valve core correspond to the pipe thread interface a on the housing.

[0009] A threaded plug is provided on the cap.

[0010] The large filter screen has an O-ring at its filter opening.

[0011] The valve core has a square hole that mates with the handle.

[0012] A sealing ring is provided between the handle and the cap.

[0013] The handle is L-shaped.

[0014] The cap is fixed to the housing by connecting bolts.

[0015] The beneficial effects of this utility model are: when the large filter screen is clogged, the small filter screen can be switched by rotating the handle, and then the large filter screen can be removed online for cleaning; the small filter screen can be cleaned by rotating the handle; the equipment can be shut down during the filter screen cleaning process. Attached Figure Description

[0016] Figure 1 This is the front view of the present utility model;

[0017] Figure 2 This is the main view of the cap of this utility model;

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

[0019] Figure 4 This is a front view of the casing of this utility model;

[0020] Figure 5 This is a schematic diagram of the valve core of this utility model;

[0021] Figure 6 for Figure 5 AA section diagram;

[0022] Figure 7 for Figure 5 BB cross-section diagram;

[0023] Figure 8 This is a schematic diagram of the filter cavity of this utility model;

[0024] Figure 9 This is a schematic diagram of the large filter screen of this utility model;

[0025] In the diagram: 1. Valve core; 2. Sealing cap; 3. Connecting bolt; 4. Handle; 5. Housing; 6. Filter chamber; 7. Large filter screen; 8. Chamber cover; 9. Sealing ring; 10. Plug; 11. Small filter screen; 12. O-ring.

[0026] Pipe thread interface a51, thread interface b52, connecting bolt hole 53;

[0027] Through hole a61, through hole b62, threaded interface c63, threaded interface d64; Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and examples.

[0029] See attached document Figure 1-9A chemical pump filter that can be maintained online includes a valve core 1, a cap 2, a connecting bolt 3, a handle 4, a housing 5, a filter chamber 6, a large filter screen 7, a chamber cover 8, and a small filter screen 11. The large filter screen 7 is disposed in the filter chamber 6, the small filter screen 11 is disposed in the valve core 1, the valve core 1 is disposed in the housing 5, the upper end of the housing 5 is provided with a cap 2, the handle 4 passes through the cap 2 and is connected to the valve core 1, the lower end of the housing 5 is threadedly connected to the upper end of the filter chamber 6, and the lower end of the filter chamber 6 is provided with a chamber cover 8.

[0030] In this embodiment, refer to the appendix Figure 1-9 The chemical pump filter includes a valve core 1, a sealing cap 2, a connecting bolt 3, a handle 4, a housing 5, a filter chamber 6, a large filter screen 7, a chamber cover 8, a sealing ring 9, a plug 10, a small filter screen 11, and an O-ring 12, wherein:

[0031] The valve core 1 is cylindrical, with two pairs of symmetrical blind holes (non-through holes) on the circular surfaces at both ends. One pair of holes opens downwards, allowing the liquid containing impurities to be introduced from the inlet into the filter chamber 6 and then out of the filter chamber 6 to achieve filtration. The other pair of through holes opens upwards, allowing the liquid containing impurities to be introduced from the inlet through the lower cavity of the upper cap 2 and the small filter screen 11 to the outlet.

[0032] A plug 10 is installed on the cap 2. When it is put into operation, the plug 10 is opened first to release the air. At the same time, the thread hole on the cap 2 where the plug 10 is located is aligned with the small filter screen 11. When the small filter screen 11 needs to be cleaned or replaced, it is very convenient to take it out.

[0033] The large filter screen 7 and the filter chamber 6 are connected by a socket type and equipped with an O-ring 12, which makes disassembly convenient and provides a good sealing effect.

[0034] Both the filter chamber 6 and the chamber cover 8 are made of resin glass, making it easy to observe the filtrate effect and the amount of impurities. The chamber cover 8 is threaded to the filter chamber 6, providing a good seal and easy disassembly, which facilitates the installation of the large filter screen 7.

[0035] The handle 4 has an L-shaped structure, which facilitates the removal or installation of the plug 10 and the connecting bolt 3. The lower end of the handle 4 has a square structure, which can be inserted into the square hole above the valve core 1 to enable easy rotation of the valve core.

[0036] The assembly method is as follows:

[0037] First, connect the housing 5 and the filter chamber 6 via the threaded interface c63. Then, insert the filter port of the large filter screen 7 into the through hole a61 and install an O-ring 12 to ensure a good seal. Install the chamber cover 8 onto the filter chamber 6 via the threaded interface d64 and tighten it. Then, place the valve core 1 into the housing 5, ensuring that the opening on the cylindrical surface of the valve core 1 is aligned with the threaded connection port a51 on the housing 5. Pass the handle 4 through the cap 2 and install the sealing ring 9. Then, install the cap 2 onto the housing 5 and secure it to the housing 5 with the connecting bolts 3. Before installation, ensure that the square head at the lower end of the handle 4 is inserted into the square hole above the valve core 1 to allow the handle 4 to rotate the filter element. Through the hole where the plug 10 is located on the cap 2, place the small filter screen 11 into one of the filter holes of the valve core 1, ensuring that this filter hole is located at the liquid outlet during operation. Finally, tighten the plug 10.

[0038] During operation, liquid containing impurities enters valve core 1 through the side inlet of housing 5. One filter hole in valve core 1 directs the liquid to large filter screen 7, where impurities are filtered. The filtrate enters filter chamber 6, passes through through hole b62, and enters another filter hole in valve core 1, flowing through this hole to the side outlet of housing 5. When the amount of impurities in large filter element 7 increases significantly, rotating handle 4 causes valve core 1 to rotate, changing the liquid flow direction from downward to upward. The liquid then passes through the upward-facing filter hole into another filter hole with a small filter element 11, and then flows through this filter hole to the side outlet of housing 5.

Claims

1. A chemical pump filter that can be maintained online, characterized in that: It includes a valve core (1), a cap (2), a connecting bolt (3), a handle (4), a housing (5), a filter chamber (6), a large filter screen (7), a chamber cover (8), and a small filter screen (11). The large filter screen (7) is located inside the filter chamber (6), the small filter screen (11) is located inside the valve core (1), the valve core (1) is located inside the housing (5), the upper end of the housing (5) is provided with a cap (2), the handle (4) passes through the cap (2) and is connected to the valve core (1), the lower end of the housing (5) is threadedly connected to the upper end of the filter chamber (6), and the lower end of the filter chamber (6) is provided with a chamber cover (8).

2. The online maintainable chemical pump filter according to claim 1, characterized in that: The valve core (1) is cylindrical, and two pairs of symmetrical blind holes are provided on the upper and lower end faces of the valve core (1), one pair of blind holes opening downwards and the other pair of blind holes opening upwards.

3. The online maintainable chemical pump filter according to claim 2, characterized in that: The filter cavity (6) is provided with through hole a (61) and through hole b (62), and the two downward-facing blind holes on the valve core (1) correspond to through hole a (61) and through hole b (62) on the filter cavity (6), respectively.

4. The online maintainable chemical pump filter according to claim 2, characterized in that: The valve core (1) has radial side holes on both sides, and the housing (5) has a pipe thread interface a (51). The radial side holes on both sides of the valve core (1) correspond to the pipe thread interface a (51) on the housing (5).

5. The online maintainable chemical pump filter according to claim 1, characterized in that: A plug (10) is provided on the cap (2).

6. The online maintainable chemical pump filter according to claim 1, characterized in that: The large filter screen (7) has an O-ring (12) at its filter opening.

7. The online maintainable chemical pump filter according to claim 1, characterized in that: The valve core (1) has a square hole that matches the handle (4).

8. The online maintainable chemical pump filter according to claim 1, characterized in that: A sealing ring (9) is provided between the handle (4) and the cap (2).

9. A chemical pump filter that can be maintained online according to claim 1, characterized in that: The handle (4) is L-shaped.

10. A chemical pump filter that can be maintained online according to claim 1, characterized in that: The cap (2) is fixed to the housing (5) by connecting bolts (3).

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