Oil field tripolymer oily sewage filter

Abstract

An oil field tripolymer oily sewage filter relates to the field of dirty oil sewage treatment equipment and comprises a tank body and a ceramic filter element, a liquid outlet cavity and a liquid inlet cavity are formed in the upper portion and the lower portion of the inner space of the tank body respectively, and a liquid inlet pipe and a liquid outlet pipe are arranged on the outer side of the tank body and correspond to the liquid inlet cavity and the liquid outlet cavity respectively. A sleeve is arranged in the tank body, the ceramic filter element is inserted into the sleeve, and a detachable upper cover is arranged at the upper end of the sleeve; a liquid inlet one-way valve is arranged on the lower partition plate and corresponds to the ceramic filter element, the liquid inlet one-way valve is communicated with the liquid inlet cavity, a liquid outlet one-way valve is arranged on the side face of the upper end of the sleeve, and a valve element of the liquid inlet one-way valve is opened due to downward pressure applied by the ceramic filter element. According to the utility model, when a certain ceramic filter element is detached, other filter elements can still work normally, and the ceramic filter elements are detached under the condition of not stopping production, so that the adverse effect on production when the filter elements are detached, cleaned or replaced is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of oily sewage treatment equipment, in particular to an oilfield tripolymer oily sewage filter. Background Art

[0002] The tertiary oil recovery process in oilfields generates a large amount of tri-polymer oily wastewater, which requires multiple stages of treatment to meet environmental standards. Ceramic membrane filters are a new type of oily wastewater treatment equipment. They contain a ceramic filter element with micropores. During operation, the oily wastewater is pressurized, allowing small molecules (primarily water molecules) in the oily wastewater to pass through the micropores, while filtering out larger molecules and particles.

[0003] In production practice, scale forms on the surface of ceramic filter elements, requiring timely cleaning. Existing technology primarily removes scale through backwashing, but this method is incomplete and affects the filtration efficiency of the ceramic filter element. To thoroughly clean the ceramic filter element, it must be removed.

[0004] In the prior art, the ceramic filter element in the ceramic membrane filter can only be disassembled when production is stopped, so disassembling and cleaning the ceramic filter element will have a significant impact on production. Utility Model Content

[0005] The utility model aims to provide an oilfield tripolymer oily wastewater filter, which aims to realize the disassembly of the ceramic filter element without stopping production, thereby reducing the adverse effects on production caused by disassembly, cleaning or replacement of the filter element.

[0006] The technical problem solved by the present invention is achieved by adopting the following technical solution: The present invention provides an oilfield tripolymer oily wastewater filter, comprising a tank body and a ceramic filter element;

[0007] An upper partition and a lower partition are respectively provided at the upper and lower parts of the internal space of the tank body, and the upper partition and the lower partition are respectively separated into a liquid outlet cavity and a liquid inlet cavity at the upper and lower ends of the tank body. A liquid inlet pipe and a liquid outlet pipe are respectively provided on the outside of the tank body corresponding to the liquid inlet cavity and the liquid outlet cavity;

[0008] A sleeve is provided in the tank body, the ceramic filter element is inserted in the sleeve, and a detachable upper cover is provided on the upper end of the sleeve;

[0009] The lower end of the sleeve is fixedly connected to the lower partition, and the upper end of the sleeve passes through the upper partition and the top of the tank body;

[0010] An inner channel is provided in the ceramic filter element, and an outer channel is provided between the ceramic filter element and the sleeve;

[0011] A liquid inlet check valve is provided on the lower partition corresponding to the ceramic filter element, and the liquid inlet check valve is connected to the liquid inlet cavity. A liquid outlet check valve is provided on the side of the upper end of the sleeve, and the liquid outlet check valve is connected to the liquid outlet cavity. At the same time, the liquid inlet check valve and the liquid outlet check valve are connected to the inner channel and the outer channel respectively.

[0012] During operation, under the action of pressure, the sewage in the liquid inlet cavity enters the inner space of the sleeve through the liquid inlet one-way valve. In the inner space of the sleeve, the sewage is filtered by the micropores in the ceramic body between the inner channel and the outer channel. Then, the filtered water is discharged from the sleeve through the liquid outlet one-way valve and enters the liquid outlet cavity, and then discharged to the outside of the tank through the liquid outlet pipe.

[0013] The valve core of the liquid inlet one-way valve is opened due to the downward pressure applied by the ceramic filter element. After the ceramic filter element is taken out upward, the valve core of the liquid inlet one-way valve is closed due to the release of the upper pressure.

[0014] As a preferred solution, the liquid inlet one-way valve is communicated with the lower end of the inner channel, and the liquid outlet one-way valve is communicated with the upper end of the outer channel.

[0015] As a preferred solution, the upper and lower ends of the ceramic filter element are sealedly connected to the upper cover and the liquid inlet one-way valve respectively, thereby isolating the inner channel from the outer channel.

[0016] As a preferred solution, the liquid inlet one-way valve is communicated with the lower end of the outer channel, and the liquid outlet one-way valve is communicated with the upper end of the inner channel.

[0017] As a preferred solution, a lower plug is provided between the lower end of the ceramic filter element and the liquid inlet one-way valve, and the upper and lower ends of the ceramic filter element are sealedly connected to the upper cover and the lower plug respectively, thereby isolating the inner channel from the outer channel;

[0018] The upper end of the valve core of the liquid inlet one-way valve abuts against the bottom of the lower plug. After the ceramic filter element moves upward, the lower plug moves synchronously with the ceramic filter element, thereby releasing the valve core of the liquid inlet one-way valve.

[0019] The beneficial effects of the utility model are:

[0020] The utility model is equipped with an inlet check valve and an outlet check valve. The ceramic filter element applies pressure to the valve core of the inlet check valve to maintain the conduction of the inlet check valve. Based on this structure, when the ceramic filter element is removed upward, the inlet check valve closes, preventing liquid in the inlet chamber from entering the sleeve. At the same time, the outlet check valve prevents liquid in the outlet chamber from flowing back into the sleeve. This structural design allows the removal of one ceramic filter element while the other filter elements continue to operate normally. This allows the removal of ceramic filter elements without interrupting production, thereby reducing the adverse impact on production caused by the removal, cleaning, or replacement of the filter elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the first embodiment of the present utility model.

[0022] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0023] Figure 3 It is a structural schematic diagram of the second embodiment of the present utility model.

[0024] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0025] Figure 1 Middle: 1. Tank body; 2. Upper partition; 3. Casing; 4. Ceramic filter element; 5. Inner channel; 6. Outer channel; 7. Lower partition; 8. Liquid inlet pipe; 9. Liquid inlet check valve; 10. Valve core; 11. Liquid outlet pipe; 12. Upper cover; 13. Liquid outlet check valve; 14. Lower plug. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] First embodiment

[0028] like Figure 1 As shown, this embodiment includes a tank body 1 and a ceramic filter element 4. An upper baffle 2 and a lower baffle 7 are provided at the upper and lower portions of the interior space of the tank body 1, respectively. The upper baffle 2 and the lower baffle 7 separate the liquid outlet chamber and the liquid inlet chamber at the upper and lower ends of the tank body 1, respectively. A liquid inlet pipe 8 and a liquid outlet pipe 11 are provided on the outside of the tank body 1, corresponding to the liquid inlet chamber and the liquid outlet chamber, respectively. The above structure already exists in the prior art and will not be described in detail here.

[0029] like Figure 1 As shown, in this embodiment, a sleeve 3 is provided within the tank body 1, and the ceramic filter element 4 is inserted into the sleeve 3. The lower end of the sleeve 3 is fixedly connected to the lower partition 7, and the upper end of the sleeve 3 passes through the upper partition 2 and the top of the tank body 1. A detachable upper cover 12 is provided on the upper end of the sleeve 3. After removing the upper cover 12, the ceramic filter element 4 can be removed from the upper end of the sleeve 3.

[0030] like Figure 1 As shown, an inner channel 5 is provided in the ceramic filter element 4, and an outer channel 6 is provided between the ceramic filter element 4 and the sleeve 3; after the sewage enters the inner channel 5, it passes through the micropores in the ceramic filter element 4, and the macromolecules and particulate matter are filtered out, and the small molecules (mainly water molecules) reach the outer channel 6, thereby achieving filtration.

[0031] like Figure 1 and 2As shown, an inlet check valve 9 is provided on the lower partition 7, corresponding to the ceramic filter element 4. The inlet check valve 9 is connected to the liquid inlet cavity. A liquid outlet check valve 13 is provided on the side of the upper end of the sleeve 3, and the liquid outlet check valve 13 is connected to the liquid outlet cavity. Simultaneously, the inlet check valve 9 is connected to the lower end of the inner channel 5, and the outlet check valve 13 is connected to the upper end of the outer channel 6. During operation, under the action of pressure, sewage in the liquid inlet cavity passes through the inlet check valve 9 and enters the space inside the sleeve 3. Within the space inside the sleeve 3, the sewage is filtered by the micropores in the ceramic body between the inner channel 5 and the outer channel 6. The filtered water then exits the sleeve 3 through the outlet check valve 13, enters the liquid outlet cavity, and is then discharged to the outside of the tank body 1 through the outlet pipe 11.

[0032] like Figure 1 and 2 As shown, in this embodiment, the upper and lower ends of the ceramic filter element 4 are sealedly connected to the upper cover 12 and the liquid inlet one-way valve 9 respectively, thereby isolating the inner channel 5 from the outer channel 6.

[0033] like Figure 1 and 2 As shown, the valve core 10 of the liquid inlet check valve 9 opens due to the downward pressure applied by the ceramic filter element 4, thereby ensuring the communication between the liquid inlet cavity and the inner channel 5. After the ceramic filter element 4 is upwardly removed, the valve core 10 of the liquid inlet check valve 9 closes due to the release of the upward pressure, thereby preventing the liquid in the liquid inlet cavity from entering the sleeve 3 after the ceramic filter element 4 is removed.

[0034] Second embodiment

[0035] The difference between this embodiment and the first embodiment lies in the direction in which sewage flows through the ceramic filter element 4. In this embodiment, sewage enters the ceramic filter element 4 from the outer channel 6 and flows out of the ceramic filter element 4 from the inner channel 5.

[0036] like Figure 3 and 4 As shown, in this embodiment, the liquid inlet check valve 9 is connected to the lower end of the outer channel 6, and the liquid outlet check valve 13 is connected to the upper end of the inner channel 5. A lower plug 14 is provided between the lower end of the ceramic filter element 4 and the liquid inlet check valve 9. The upper and lower ends of the ceramic filter element 4 are sealed to the upper cover 12 and the lower plug 14, respectively, thereby isolating the inner channel 5 from the outer channel 6. The upper end of the valve core 10 of the liquid inlet check valve 9 abuts the bottom of the lower plug 14.

[0037] During operation, under pressure, sewage in the liquid inlet chamber passes through the liquid inlet check valve 9 and enters the outer channel 6. The sewage is then filtered by the micropores in the ceramic body between the outer channel 6 and the inner channel 5. The filtered water then exits the sleeve 3 through the liquid outlet check valve 13, enters the liquid outlet chamber, and is then discharged to the outside of the tank body 1 through the liquid outlet pipe 11. When the ceramic filter element 4 is removed, after the ceramic filter element 4 moves upward, the lower plug 14 moves synchronously with the ceramic filter element 4, thereby releasing the valve core 10 of the liquid inlet check valve 9, closing the liquid inlet check valve 9.

Claims

1. An oilfield tripolymer oily wastewater filter, comprising a tank body (1) and a ceramic filter element (4), characterized in that: An upper partition (2) and a lower partition (7) are respectively provided at the upper and lower parts of the internal space of the tank body (1). The upper partition (2) and the lower partition (7) separate the liquid outlet cavity and the liquid inlet cavity at the upper and lower ends of the tank body (1). A liquid inlet pipe (8) and a liquid outlet pipe (11) are respectively provided on the outside of the tank body (1) in correspondence with the liquid inlet cavity and the liquid outlet cavity. A sleeve (3) is provided in the tank body (1), the ceramic filter element (4) is inserted in the sleeve (3), and a detachable upper cover (12) is provided at the upper end of the sleeve (3); The lower end of the sleeve (3) is fixedly connected to the lower partition (7), and the upper end of the sleeve (3) passes through the upper partition (2) and passes through the top of the tank body (1); An inner channel (5) is provided in the ceramic filter element (4), and an outer channel (6) is provided between the ceramic filter element (4) and the sleeve (3); A liquid inlet check valve (9) is provided on the lower partition (7) corresponding to the ceramic filter element (4), and the liquid inlet check valve (9) is connected to the liquid inlet cavity. A liquid outlet check valve (13) is provided on the side surface of the upper end of the sleeve (3), and the liquid outlet check valve (13) is connected to the liquid outlet cavity. At the same time, the liquid inlet check valve (9) and the liquid outlet check valve (13) are respectively connected to the inner channel (5) and the outer channel (6); The valve core (10) of the liquid inlet one-way valve (9) is opened due to the downward pressure applied by the ceramic filter element (4). After the ceramic filter element (4) is taken out upward, the valve core (10) of the liquid inlet one-way valve (9) is closed due to the release of the upper pressure.

2. The oilfield tripolymer oily wastewater filter according to claim 1, characterized in that: The liquid inlet one-way valve (9) is in communication with the lower end of the inner channel (5), and the liquid outlet one-way valve (13) is in communication with the upper end of the outer channel (6).

3. The oilfield trimer oily wastewater filter according to claim 2, characterized in that: The upper and lower ends of the ceramic filter element (4) are respectively sealed to the upper cover (12) and the liquid inlet one-way valve (9), thereby isolating the inner channel (5) from the outer channel (6).

4. The oilfield trimer oily wastewater filter according to claim 1, characterized in that: The liquid inlet one-way valve (9) is in communication with the lower end of the outer channel (6), and the liquid outlet one-way valve (13) is in communication with the upper end of the inner channel (5).

5. The oilfield trimer oily wastewater filter according to claim 4, characterized in that: A lower plug (14) is provided between the lower end of the ceramic filter element (4) and the liquid inlet one-way valve (9), and the upper and lower ends of the ceramic filter element (4) are sealedly connected to the upper cover (12) and the lower plug (14), respectively, thereby isolating the inner channel (5) from the outer channel (6); The upper end of the valve core (10) of the liquid inlet one-way valve (9) abuts against the bottom of the lower plug (14). After the ceramic filter element (4) moves upward, the lower plug (14) moves synchronously with the ceramic filter element (4), thereby releasing the valve core (10) of the liquid inlet one-way valve (9).

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