Security filter for thickener underflow pump inlet

Abstract

The utility model relates to the technical field of security filters, in particular to a security filter for an underflow pump inlet of a thickener, which comprises a filter barrel, a slurry inlet pipe, a slurry outlet pipe, a stainless steel four-mesh filter screen and a control valve. A control valve is fixedly mounted on the slurry inlet pipe; after slurry in the barrel body of the filter passes through the stainless steel four-mesh filter screen, large-particle impurities in underflow ore pulp of the thickener are effectively filtered, and the ore pulp passes through the filter with low resistance, so that the safety and the efficiency of the underflow pump are improved, and the application of the security filter for the inlet of the underflow pump of the thickener is guaranteed; the device is simple in structure, solves the problem that blockage is easily caused when an underflow pump inlet of an existing thickener uses a traditional filter with an over-dense filter screen for filtration, facilitates normal production, operation and maintenance, prolongs the service life of the device and improves the production efficiency of a workshop.

Description

Technical Field

[0001] The utility model relates to the technical field of security filters, in particular to a security filter used for an inlet of a thickener underflow pump. Background Art

[0002] Whether it is an industrial project, municipal engineering or civil engineering, thickeners, slurry tanks and reagent tank underflow pumps will occasionally encounter some large particles of debris, such as wires, bolts, nuts, rags, welding rods, gloves, wrenches and pliers that fall into the thickeners, slurry tanks and reagent tanks during maintenance; large pieces of materials, stones or scrap iron and other debris that enter the thickeners, slurry tanks and reagent tanks with the reagents during dosing, etc., which will cause great harm to the safe operation of the slurry pump, and may damage the impeller of the underflow pump or block the flow channel of the equipment, causing equipment damage or production suspension; traditional filters are prone to blockage due to over-dense filter mesh and high operating resistance, affecting normal production, and are very troublesome to operate and maintain, which brings great inconvenience to production and maintenance. In addition, due to the poor wear resistance and short service life of pipe fittings, the production efficiency is seriously affected. In response to the above problems, a security filter for the inlet of the underflow pump of the thickener is proposed. Utility Model Content

[0003] The utility model provides a safety filter for the inlet of the thickener underflow pump, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem of easy clogging caused by the traditional filter with too dense filter screen at the inlet of the existing thickener underflow pump.

[0004] In order to solve the above problems, the utility model describes a security filter for the inlet of the thickener underflow pump, comprising a filter barrel, a slurry inlet pipe, a slurry outlet pipe, a stainless steel 4-mesh filter screen and a control valve. The filter barrel is radially symmetrically provided with a slurry inlet pipe and a slurry outlet pipe fixedly connected to the inner side of the filter barrel, and a control valve is fixedly installed on the slurry inlet pipe; a stainless steel 4-mesh filter screen is provided on the inner side of the filter barrel, and the slurry inlet pipe and the slurry outlet pipe are respectively located on both sides of the stainless steel 4-mesh filter screen; a blind plate is fixedly installed above the filter barrel, an exhaust valve is installed on the upper side of the blind plate, and the bottom of the blind plate is lined with wear-resistant rubber.

[0005] A lower connecting flange is provided on the outer side of the upper part of the filter barrel body, and an upper connecting flange matching the lower connecting flange is provided on the outer ring of the blind plate. The upper connecting flange and the lower connecting flange are connected together by bolts.

[0006] A handle is provided at the center of the top of the blind plate.

[0007] The inner wall of the filter barrel, the inner wall of the slurry inlet pipe, the inner wall of the slurry outlet pipe and the top of the lower connecting flange are all lined with wear-resistant rubber.

[0008] The above-mentioned control valve is an ash valve or a gate valve.

[0009] The utility model connects the equipment or slurry outlet pipeline to be connected, controls the slurry inlet through the control valve, and the slurry in the filter barrel passes through the stainless steel 4-mesh filter screen and flows out from the slurry outlet pipe, which can effectively filter the large particles of debris in the underflow slurry of the thickener, and pass the slurry through the filter with low resistance, thereby improving the safety and efficiency of the underflow pump and ensuring the application of the safety filter for the inlet of the underflow pump of the thickener; and the device has a simple structure, which solves the problem of easy clogging of the traditional filter filtration with too dense filter screen at the inlet of the underflow pump of the existing thickener, facilitates normal production, and is convenient for operation and maintenance, thereby improving the service life of the device and the production efficiency of the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0012] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0013] Figure 3 It is a schematic diagram of the top view of the blind plate of the utility model.

[0014] Figure 4 It is a structural schematic diagram of the blind plate of the utility model.

[0015] Figure 5 for Figure 4 A partially enlarged cross-sectional view of .

[0016] In the figure: 1-filter barrel, 2-slurry inlet pipe, 3-slurry outlet pipe, 4-stainless steel 4-mesh filter, 5-control valve, 6-blind plate, 7-upper connecting flange, 8-handle, 9-water line, 10-exhaust valve, 11-lower connecting flange. DETAILED DESCRIPTION

[0017] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0018] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0019] like Figure 1-5As shown, a security filter for the inlet of the thickener underflow pump includes a filter barrel 1, a slurry inlet pipe 2, a slurry outlet pipe 3, a stainless steel 4-mesh filter screen 4 and a control valve 5. The filter barrel 1 is radially symmetrically provided with a slurry inlet pipe 2 and a slurry outlet pipe 3 fixedly connected to the inner side of the filter barrel 1, and the control valve 5 is fixedly installed on the slurry inlet pipe 2; a stainless steel 4-mesh filter screen 4 is provided on the inner side of the filter barrel 1, and the slurry inlet pipe 2 and the slurry outlet pipe 3 are respectively located on both sides of the stainless steel 4-mesh filter screen 4, a blind plate 6 is fixedly installed above the filter barrel 1, an exhaust valve 10 is installed on the upper side of the blind plate 6, and the bottom of the blind plate 6 is lined with wear-resistant rubber.

[0020] The filter barrel body 1 has multiple specifications to choose from, including D820, D1020, D1120, D1230, D1330, D1430, and D1530 according to the diameter of the filter barrel body 1, and its pressure resistance level has multiple levels to choose from, including 1.00MPa, 1.60MPa, 2.00MPa, 2.50MPa, and 4.00MPa.

[0021] The above-mentioned slurry inlet pipe 2 and slurry outlet pipe 3 have multiple specifications to choose from, including DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN550, and DN600 according to the diameter of the slurry inlet pipe 2 and the slurry outlet pipe 3, and the pressure resistance level has multiple levels to choose from, including 1.00MPa, 1.60MPa, 2.00MPa, 2.50MPa, and 4.00MPa.

[0022] The blind plate 6 is lined with 12mm thick wear-resistant rubber, which extends the service life of the filter barrel 1 and the tube body and saves costs. The wear-resistant rubber is made of elastic airbags, which does not scale or accumulate dust, closes tightly, does not leak slurry, and is safe and reliable. Among them, at least four water lines 9 are provided on the bottom of the blind plate 6, which are concentric with the blind plate 6, to increase the contact friction and sealing between the blind plate 6 and the wear-resistant rubber.

[0023] The specific working process of this utility model is as follows:

[0024] When in use, first install the device between the slurry inlet pipe 2 and the slurry outlet pipe 3. If connection difficulties occur, rubber force transmission joints or pressure-resistant rubber steel wire hoses can be installed on the slurry inlet and outlet pipes 3 to correct joint deviations and smoothly install the device in place, completing the installation. Subsequently, connect the equipment or slurry outlet pipe 3 to be connected, and control the slurry inlet through the control valve 5. The slurry in the filter barrel 1 is filtered through the stainless steel 4-mesh filter screen 4 and flows out from the slurry outlet pipe 3, which can effectively filter out large particles of debris in the thickener underflow slurry and pass the slurry through the filter with low resistance, thereby improving the safety and efficiency of the underflow pump and ensuring the application of the safety filter for the inlet of the thickener underflow pump. In addition, the device has a simple structure, which solves the problem of easy blockage caused by the traditional filter filtering with too dense filter screen at the inlet of the existing thickener underflow pump, facilitates normal production, and is convenient for operation and maintenance, thereby improving the service life of the device and the production efficiency of the workshop.

[0025] like Figure 1-3 As shown, a lower connecting flange 11 is provided on the outer side of the upper portion of the filter barrel 1, and an upper connecting flange 7 matching the lower connecting flange 11 is provided on the outer ring of the blind plate 6. The upper connecting flange 7 and the lower connecting flange 11 are connected together by bolts. Thus, a fixed connection between the blind plate 6 and the filter barrel 1 is achieved.

[0026] The flange and sealing blind plate 6 are available in various specifications including DN800, DN1000, DN1200 and DN1500 according to their diameters, and their pressure resistance grades are available in various levels including 1.00MPa, 1.60MPa, 2.00MPa, 2.50MPa and 4.00MPa.

[0027] like Figure 1-4 As shown, a handle 8 is provided at the top center of the blind plate 6. It is used to open the blind plate 6 for disassembly during maintenance and to facilitate the lifting of the entire distribution barrel.

[0028] As needed, wear-resistant rubber is provided on the inner wall of the filter barrel 1, the inner wall of the slurry inlet pipe 2, the inner wall of the slurry outlet pipe 3, and the top of the lower connecting flange 11. By providing the wear-resistant rubber, the service life of the distribution barrel 1 and the pipe body is extended, and costs are saved. The wear-resistant rubber is made of elastic airbags, which does not scale or accumulate dust, closes tightly, does not leak slurry, and is safe and reliable.

[0029] like Figure 1 、 2As shown, control valve 5 is an ash valve or gate valve. When conveying slurry, a dedicated ash valve for slurry management is recommended. This valve is corrosion-resistant, wear-resistant, and has a long service life. Available diameters include DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN550, and DN600. Pressure ratings include 1.00 MPa, 1.60 MPa, 2.00 MPa, 2.50 MPa, and 4.00 MPa.

[0030] Among them, gate valves can be used when transporting clean water.

Claims

1. A safety filter for the inlet of a thickener underflow pump, characterized in that: It includes a filter barrel body, a slurry inlet pipe, a slurry outlet pipe, a stainless steel 4-mesh filter screen and a control valve. The filter barrel body is radially symmetrically provided with a slurry inlet pipe and a slurry outlet pipe which are fixedly connected to the inner side of the filter barrel body, and a control valve is fixedly installed on the slurry inlet pipe; a stainless steel 4-mesh filter screen is provided on the inner side of the filter barrel body, and the slurry inlet pipe and the slurry outlet pipe are respectively located on both sides of the stainless steel 4-mesh filter screen. A blind plate is fixedly installed above the filter barrel body, an exhaust valve is installed on the upper side of the blind plate, and the bottom of the blind plate is lined with wear-resistant rubber.

2. A safety filter for the inlet of a thickener underflow pump according to claim 1, characterized in that: A lower connecting flange is provided on the outer side of the upper part of the filter barrel body, and an upper connecting flange matching the lower connecting flange is provided on the outer ring of the blind plate. The upper connecting flange and the lower connecting flange are connected together by bolts.

3. The safety filter for the inlet of the thickener underflow pump according to claim 1, characterized in that: There is a handle at the top center of the blind plate.

4. A safety filter for the inlet of a thickener underflow pump according to claim 2, characterized in that: The inner wall of the filter barrel, the inner wall of the slurry inlet pipe, the inner wall of the slurry outlet pipe and the top of the lower connecting flange are all lined with wear-resistant rubber.

5. The safety filter for the inlet of the thickener underflow pump according to claim 2, characterized in that: The control valve is an ash valve or a gate valve.

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