A hydrochloric acid double-layer filtering device

Abstract

The utility model discloses a hydrochloric acid double -layer filter equipment, including primary filter casing, the support frame is fixedly connected on the primary filter casing outer wall, the support frame is fixedly connected with the secondary filter casing below primary filter casing, the lower portion of secondary filter casing top is linked together with the primary filter casing through a pipeline, the lower portion of secondary filter casing is linked together with the drain pipe, the end of drain pipe is equipped with drain valve no.

Description

Technical Field

[0001] This utility model belongs to the technical field of filtration devices, specifically referring to a hydrochloric acid double-layer filtration device. Background Technology

[0002] The working principle of hydrochloric acid filters is mainly based on physical filtration. The filter has a filter membrane inside. When liquid passes through the filter membrane, impurities such as particulate matter, bacteria, and microorganisms are trapped on the surface of the filter membrane, thereby purifying the liquid. The factors that affect the filtration effect mainly include: the pore size of the filter membrane, the filtration speed, the impurity content in the liquid, and the physicochemical properties of the liquid.

[0003] Commonly used hydrochloric acid filtration devices typically consist of a coarse filter layer and a fine filter layer. Their initial design aims to achieve preliminary filtration through the difference in pore size between the two stages. However, they have significant shortcomings in complex operating conditions.

[0004] The impurity interception efficiency is limited, and there is a lack of intermediate transition stages. When the fluid contains a large number of medium-sized impurities, these impurities cannot be effectively intercepted by the coarse filter layer and will directly impact the fine filter layer, causing the fine filter layer to be blocked prematurely. When the filtration requirements are high, replacing the equipment increases the operating cost, making it less economical. Furthermore, the backwashing effect is poor, and the filter media regeneration is difficult. Utility Model Content

[0005] The technical problem this invention aims to solve is that the hydrochloric acid double-layer filtration device has limited impurity interception efficiency, lacks deep purification capability, and has poor backwashing effect during use.

[0006] The technical solution adopted by this utility model is as follows: This utility model proposes a hydrochloric acid double-layer filtration device, including a primary coarse filter housing, a support frame fixedly connected to the outer wall of the primary coarse filter housing, a secondary fine filter housing located below the primary coarse filter housing fixedly connected to the support frame, the upper part of the secondary fine filter housing being connected to the lower part of the primary coarse filter housing through a pipe, the lower part of the secondary fine filter housing being connected to a discharge pipe, a discharge valve being provided at the end of the discharge pipe, a diversion valve being provided on the discharge pipe, and a depth filtration unit;

[0007] The deep filtration unit includes an external filter housing connected to a diversion valve. The external filter housing is equipped with a chelating resin filter membrane for deep filtration of metal ions. The upper part of the external filter housing is equipped with a discharge valve.

[0008] Furthermore, the primary coarse filter housing is equipped with a coarse filter screen to intercept particles larger than 100μm, and the secondary fine filter housing is equipped with a PTFE pleated membrane filter element with a pore size of 1-5μm to retain fine particles of 1-100μm.

[0009] Furthermore, the upper part of the primary coarse filter housing is connected to an inlet valve, the upper part of the inlet valve is connected to an inlet port, and the upper part of the side wall of both the primary coarse filter housing and the secondary fine filter housing is provided with a backwash drain valve.

[0010] Furthermore, a U-shaped mounting frame is fixedly connected to the support frame, a water storage tank is fixedly connected to the U-shaped mounting frame, a pump is connected to the lower part of the water storage tank, and a water supply pipe that penetrates the lower part of the secondary fine filter housing is connected to the outlet end of the pump.

[0011] Furthermore, an inert gas compression tank is provided above the external filter housing, and the lower part of the inert gas compression tank is connected to the external filter housing through a solenoid valve. A cleaning valve is provided on the lower part of the side wall of the external filter housing.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. When designing the filtration device, retain the double-layer filtration structure as the basis, and add a third-stage filtration tank to improve the deep processing capability of fine particles and reduce the overall replacement cost of the filtration equipment;

[0014] 2. Water backwashing and inert gas backwashing are used to improve cleanliness and reduce the lifespan of the filter media. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0017] Figure 3 This is a reference diagram showing the usage status of an inert gas compression tank.

[0018] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0019] The components include: 1. Primary coarse filter housing; 11. Support frame; 12. Secondary fine filter housing; 13. Discharge pipe; 14. Discharge valve one; 15. Diversion valve; 2. External filter housing; 21. Chelated resin filter membrane; 22. Discharge valve two; 3. Coarse filter screen; 31. PTFE pleated membrane filter element; 32. Inlet valve; 33. Inlet port; 34. Backwash drain valve; 4. U-shaped mounting frame; 41. Water storage tank; 42. Pump; 43. Water supply pipe; 5. Inert gas compression tank; 51. Solenoid valve; 52. Cleaning valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] Example 1:

[0023] like Figure 1 , 4 As shown, the present invention proposes a hydrochloric acid dual-layer filtration device, comprising a primary coarse filter housing 1, a support frame 11 fixedly connected to the outer wall of the primary coarse filter housing 1, a secondary fine filter housing 12 fixedly connected to the support frame 11 below the primary coarse filter housing 1, the upper part of the secondary fine filter housing 12 being connected to the lower part of the primary coarse filter housing 1 via a pipe, the lower part of the secondary fine filter housing 12 being connected to a discharge pipe 13, the end of the discharge pipe 13 being provided with a discharge valve 14, the discharge pipe 13 being provided with a diversion valve 15, and a depth filtration unit; the depth filtration unit includes an external filter housing 2 connected to the diversion valve 15, the internal part of the external filter housing 2 being provided with a chelating resin filter membrane 21 for deep filtration of metal ions, and the upper part of the external filter housing 2 being provided with a discharge valve 22.

[0024] It should be noted that the discharge pipe 13 serves as the outlet pipe for the primary coarse filter housing 1 and the secondary fine filter housing 12. A branch is added to it, and the external filter housing 2 is used for third-stage filtration by the diversion valve 15. It is activated when the filtration requirements are high to improve the filtration purity; and it is turned off when the purity requirements are low to save energy. After passing through the primary coarse filter housing 1 and the secondary fine filter housing 12, the fluid enters the external filter housing 2, where 0.01-1μm particles and metal ions are intercepted by the chelating resin filter membrane 21. Finally, the filtrate is discharged from the discharge valve 22.

[0025] The first-stage coarse filter housing 1 is equipped with a coarse filter screen 3 inside, which intercepts particles larger than 100μm. The second-stage fine filter housing 12 is equipped with a PTFE pleated membrane filter element 31 inside, with a pore size of 1-5μm, which intercepts fine particles of 1-100μm.

[0026] like Figure 2As shown, the upper part of the primary coarse filter housing 1 is connected to an inlet valve 32, and the upper part of the inlet valve 32 is connected to an inlet port 33. The upper part of the side wall of the primary coarse filter housing 1 and the secondary fine filter housing 12 are both provided with backwash drain valves 34. After the inlet valve 32 is opened, the material to be filtered is injected through the inlet port 33. After long-term use, the coarse filter screen 3 and the PTFE pleated membrane filter element 31 need to be backwashed. After closing the inlet valve 32, the backwash drain valves 34 are opened one by one to discharge impurities.

[0027] like Figure 2 , 4 As shown, a U-shaped mounting frame 4 is fixedly connected to the support frame 11, and a water storage tank 41 is fixedly connected to the U-shaped mounting frame 4. A pump 42 is connected to the lower part of the water storage tank 41, and a water supply pipe 43 that penetrates the lower part of the secondary fine filter housing 12 is connected to the liquid outlet end of the pump 42.

[0028] By storing flushing water in the water storage tank 41, and with the operation of the pump 42, the water is injected from the bottom of the secondary fine filter housing 12 through the water supply pipe 43 to perform a backwashing operation.

[0029] Example 2:

[0030] like Figure 3 As shown, an inert gas compression tank 5 is provided above the external filter housing 2. The lower part of the inert gas compression tank 5 is connected to the external filter housing 2 through a solenoid valve 51. A cleaning valve 52 is provided on the lower part of the side wall of the external filter housing 2.

[0031] When backwashing the external filter housing 2, the discharge valve 22 needs to be closed and the cleaning valve 52 opened. The inert gas compression tank 5 contains compressed nitrogen. After opening the solenoid valve 51, the nitrogen is introduced into the external filter housing 2, which penetrates the filter material, i.e., the chelated resin filter membrane 21, and the trapped impurities are discharged from the cleaning valve 52.

[0032] The above is the entire usage process of a hydrochloric acid double-layer filtration device.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0034] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A hydrochloric acid double-layer filtration device, comprising a primary coarse filter housing (1), a support frame (11) fixedly connected to the outer wall of the primary coarse filter housing (1), and a secondary fine filter housing (12) located below the primary coarse filter housing (1) fixedly connected to the support frame (11), characterized in that: The upper part of the secondary fine filter housing (12) is connected to the lower part of the primary coarse filter housing (1) through a pipe. The lower part of the secondary fine filter housing (12) is connected to a discharge pipe (13). The end of the discharge pipe (13) is provided with a discharge valve (14). The discharge pipe (13) is provided with a diversion valve (15). It also includes a depth filtration unit. The deep filtration unit includes an external filter housing (2) connected to a diversion valve (15). The external filter housing (2) is equipped with a chelating resin filter membrane (21) for deep filtration of metal ions. The external filter housing (2) is equipped with a discharge valve (22) on its upper part.

2. The hydrochloric acid double-layer filtration device according to claim 1, characterized in that: The first-stage coarse filter housing (1) is equipped with a coarse filter screen (3) to intercept particles larger than 100μm. The second-stage fine filter housing (12) is equipped with a PTFE pleated membrane filter element (31) with a pore size of 1-5μm to retain fine particles of 1-100μm.

3. The hydrochloric acid double-layer filtration device according to claim 1, characterized in that: The upper part of the primary coarse filter housing (1) is connected to an inlet valve (32), and the upper part of the inlet valve (32) is connected to an inlet port (33). The upper part of the side wall of the primary coarse filter housing (1) and the secondary fine filter housing (12) are both provided with backwash drain valves (34).

4. The hydrochloric acid double-layer filtration device according to claim 1, characterized in that: A U-shaped mounting frame (4) is fixedly connected to the support frame (11), and a water storage tank (41) is fixedly connected to the U-shaped mounting frame (4). A pump (42) is connected to the lower part of the water storage tank (41), and a water supply pipe (43) that penetrates the lower part of the secondary fine filter housing (12) is connected to the outlet end of the pump (42).

5. The hydrochloric acid double-layer filtration device according to claim 1, characterized in that: An inert gas compression tank (5) is provided above the external filter housing (2). The lower part of the inert gas compression tank (5) is connected to the external filter housing (2) through a solenoid valve (51). A cleaning valve (52) is provided on the lower part of the side wall of the external filter housing (2).

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