A waste liquid filtering pipeline structure of a heat exchange station in caustic soda production

Abstract

The utility model provides a kind of waste liquid filtering pipeline structure in heat exchange station in caustic soda production, including filter pipe shell, upper control valve and lower control valve are all screw thread connection in the upper and lower ends of filter pipe shell;The lower part of filter pipe shell left side is screw thread connection with flow sensor;Filter pipe shell left upper portion is connected with blow-off head structure;The inside lower side of filter pipe shell is welded with connecting seat, and filter cylinder structure is connected in connecting seat, it is characterized in that, the blow-off head structure includes blow-off valve, and the right side outside blow-off valve is connected with sealing ring;Blow-off valve right end is screw thread connection with communicating head, and communicating head left side is connected with sealing ring.The utility model is through the setting of blow-off head structure, and the work of backwashing blow-off is carried out by injecting water from the lower part of filter pipe shell after closing upper control valve.

Description

Technical Field

[0001] This utility model belongs to the field of waste liquid filtration technology, and in particular relates to a waste liquid filtration pipeline structure in a heat exchange station during caustic soda production. Background Technology

[0002] The waste liquid filtration pipeline structure of the heat exchange station is a device structure used in the production process of caustic soda to filter impurities from the waste liquid in the heat exchange station. This structure effectively treats the waste liquid in the heat exchange station, thereby ensuring the long-term, stable and efficient operation of the equipment. However, the repeated disassembly and cleaning during use is relatively complicated and troublesome, and repeated disassembly can easily cause wear and affect the sealing performance. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a waste liquid filtration pipeline structure for heat exchange stations in caustic soda production, which realizes the function of auxiliary backwashing for sewage discharge. This avoids the complicated and troublesome disassembly and assembly work, and thus avoids the problem of repeated disassembly causing wear and affecting the sealing performance.

[0004] The technical solution is as follows: a waste liquid filtration pipeline structure for a heat exchange station in caustic soda production, including a filter tube shell, with an upper control valve and a lower control valve threadedly connected to both ends of the filter tube shell; a flow sensor is threadedly connected to the lower left side of the filter tube shell; a drain head structure is connected to the upper left side of the filter tube shell; a connecting seat is welded to the lower side inside the filter tube shell, and a filter cylinder structure is connected inside the connecting seat. The drain head structure includes a drain valve, with a sealing ring connected to the right side of the drain valve; a connecting head is threadedly connected to the right end of the drain valve, and the left side of the connecting head is connected to the sealing ring.

[0005] Preferably, the connecting head is welded to the left side inside the filter tube shell and is interconnected.

[0006] Preferably, the sealing ring is clamped between the drain valve and the connecting head to cooperate with the drain valve for sealing installation.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, the drain valve is designed to allow water to be injected from the bottom of the filter housing for backwashing and draining after the upper control valve is closed. This achieves the function of assisting backwashing for draining, thus avoiding complex and troublesome disassembly and assembly work, and preventing repeated disassembly from causing wear and affecting the sealing performance.

[0008] In this invention, the sealing ring and the connecting head are connected to the filter tube shell in conjunction with the drain valve for connection. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a schematic diagram showing the structural positions of the filter tube shell, filter cylinder structure, and connecting seat of this utility model.

[0011] Figure 3 This is a schematic diagram of the filter cartridge structure of this utility model.

[0012] Figure 4 This is a schematic diagram of the structure of the drain head of this utility model.

[0013] In the picture: 1. Filter housing; 2. Upper control valve; 3. Lower control valve; 4. Flow sensor; 5. Drain head structure; 51. Drain valve; 52. Sealing ring; 53. Connecting head; 6. Filter cartridge structure; 61. Filter basket; 62. Filter bag; 63. Filter element; 7. Connecting seat. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: Example:

[0015] As attached Figure 1 As shown, a waste liquid filtration pipeline structure for a heat exchange station in caustic soda production includes a filter tube shell 1. Both ends of the filter tube shell 1 are threadedly connected to an upper control valve 2 and a lower control valve 3. A flow sensor 4 is threadedly connected to the lower left side of the filter tube shell 1. A drain head structure 5 is connected to the upper left side of the filter tube shell 1. A connecting seat 7 is welded to the lower inside of the filter tube shell 1, and a filter cartridge structure 6 is connected inside the connecting seat 7.

[0016] As attached Figure 2 As shown in the above embodiment, specifically, the drain head structure 5 includes a drain valve 51, and a sealing ring 52 is connected to the right side of the drain valve 51; a connecting head 53 is threadedly connected to the right end of the drain valve 51, and the left side of the connecting head 53 is connected to the sealing ring 52.

[0017] As attached Figure 3 As shown in the above embodiment, specifically, the filter cartridge structure 6 includes a filter basket 61, a filter bag 62 is threadedly connected inside the filter basket 61, and a filter core 63 is inserted inside the filter bag 62.

[0018] In the above embodiments, specifically, the connecting head 53 is welded to the left side inside the filter tube shell 1 and is interconnected.

[0019] In the above embodiments, specifically, the sealing ring 52 is clamped between the drain valve 51 and the connecting head 53 to cooperate with the drain valve 51 for sealing installation.

[0020] In the above embodiments, specifically, the sealing ring 52 is a rubber ring, and the sealing ring 52 is tightly attached to the end of the drain valve 51 and the connecting head 53.

[0021] In the above embodiments, specifically, the outer side of the upper part of the connecting seat 7 is provided with an annular threaded groove and is threadedly connected to the lower part of the filter basket 61, and the inner side of the upper part of the connecting seat 7 is provided with a threaded hole and is threadedly connected to the lower part of the filter element 63.

[0022] In the above embodiments, specifically, the filter bag 62 is disposed between the filter basket 61 and the filter element 63.

[0023] In the above embodiments, specifically, the upper control valve 2, the lower control valve 3, the flow sensor 4, and the drain valve 51 are all controlled by a PLC, and the PLC is electrically connected to a computer for interaction.

[0024] Working principle

[0025] The working principle of this utility model is as follows: When filtering waste liquid in a heat exchange station, the filter tube shell 1 is threadedly connected to the discharge pipe through the upper control valve 2 and the lower control valve 3. After the connection is made, the waste liquid enters the filter tube shell 1 from the upper control valve 2 and passes through the filter basket 61, filter bag 62 and filter element 63 in sequence. Finally, it flows out from the lower control valve 3 at the bottom of the filter tube shell 1 to complete the filtration work. During use, when the flow sensor 4 detects that the flow rate has decreased and flushing is required, the upper control valve 2 is closed and the drain valve 51 is opened. In this way, water can be sprayed into the filter tube shell 1 from the lower control valve 3 to flush the filter element 63, filter bag 62 and filter basket 61. The sewage is discharged from the connector 53 and the drain valve 51 to complete the backwashing work.

[0026] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A waste liquid filtration pipeline structure for a heat exchange station in caustic soda production, comprising a filter tube shell (1), with an upper control valve (2) and a lower control valve (3) threadedly connected to both the upper and lower ends of the filter tube shell (1); a flow sensor (4) threadedly connected to the lower left side of the filter tube shell (1); a drain head structure (5) connected to the upper left side of the filter tube shell (1); a connecting seat (7) welded to the lower side inside the filter tube shell (1), and a filter cylinder structure (6) connected inside the connecting seat (7), characterized in that, The drain head structure (5) includes a drain valve (51), and a sealing ring (52) is connected to the right side of the drain valve (51); a connecting head (53) is threaded to the right end of the drain valve (51), and the left side of the connecting head (53) is connected to the sealing ring (52).

2. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 1, characterized in that, The filter cartridge structure (6) includes a filter basket (61), a filter bag (62) is threaded inside the filter basket (61), and a filter element (63) is inserted inside the filter bag (62).

3. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 1, characterized in that, The connecting head (53) is welded to the left side inside the filter tube shell (1) and is connected to each other.

4. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 1, characterized in that, The sealing ring (52) is clamped between the drain valve (51) and the connecting head (53) to seal the drain valve (51).

5. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 1, characterized in that, The sealing ring (52) is made of rubber and is in close contact with the ends of the drain valve (51) and the connector (53).

6. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 2, characterized in that, The upper outer side of the connecting seat (7) is provided with an annular threaded groove and is threadedly connected to the lower part of the filter basket (61). The upper inner side of the connecting seat (7) is provided with a threaded hole and is threadedly connected to the lower part of the filter element (63).

7. The waste liquid filtration pipeline structure in the heat exchange station of caustic soda production as described in claim 2, characterized in that, The filter bag (62) is disposed between the filter basket (61) and the filter element (63).

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