Waste oil filtering device for oil field well cementation experiment

Abstract

The utility model discloses a waste oil filtering device for an oil field well cementation experiment. The waste oil filtering device comprises a primary filtering box and a secondary filtering box, a top cover is mounted on the primary filter box, and a filter mechanism is arranged in the primary filter box; the filtering mechanism comprises a rotating shaft installed in the primary filtering box, four supporting plates are fixedly installed on the rotating shaft, and filtering nets are installed on the outer sides of the supporting plates. According to the waste oil filtering device for the oil field well cementation experiment, the filtering mechanism with the four independent cavity structures is arranged in the primary filtering box, the filtering net is installed in each cavity, the filtering mechanism is driven by the rotating shaft to rotate, the four cavities are made to conduct primary filtering operation on waste oil in turn, and therefore the filtering efficiency is greatly improved. Under the condition that the device is not shut down, the filter screens can be cleaned in turn, and the operation efficiency of the device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field especially relates to a kind of waste oil filtering device of oilfield cementing experiment. BACKGROUND

[0002] In the petroleum industry, oil well cementing laboratory carries out high temperature and high pressure thickening experiment more frequently, instrument pipeline blockage, filter and the damage of each valve, more than 75% is caused by oil pollution, and the heat conducting oil used in high temperature and high pressure thickening instrument is consumable, and the price is relatively expensive, and about 600-800 yuan of RMB of 5L thickening oil in a bucket, about 200-300ml thickening oil is consumed in a group of thickening experiments, it can be imagined that the oil cost is a large expenditure every year, due to oil pollution, it can cause the damage of other expensive accessories of instrument, in the current advocating low-cost operation, waste thickening oil recovery should be put on the agenda, but waste oil contains a large amount of cement particles, when waste oil containing cement particles is reused, it can cause instrument pipeline blockage, and also can cause instrument filter wear, so that cement particles in waste oil are removed, to recycle it.

[0003] The file with the existing announcement number CN217961478U discloses a kind of waste oil filtering device for oilfield cementing experiment, and its technical scheme is: including bottom plate, bottom plate top middle installation pedestal, the pedestal top installation primary filter device and secondary filter device, the primary filter device includes primary filter box, the primary filter box left side hole installation feed pipe, the primary filter box inside installation filter screen, the primary filter box bottom hole installation discharge port, the discharge port is opened on the hole without screw thread and is installed discharge valve, the four corners on the bottom of the primary filter box are connected with support foot, the beneficial effect of the utility model is: cement particles in waste oil can be removed after twice filtering effect, and the device structure is simple, easy to use, the device can be moved, can be replaced with laboratory place.

[0004] However, the filter screen in the primary filter box in the device is only one, however, as is well known, petroleum is relatively viscous, plus cement particles therein, it is easy to cause filter screen blockage, therefore, filter screen needs to be cleaned regularly, in the process of filter screen dismounting and cleaning, filter device cannot be used, which will undoubtedly cause the use rate of device to reduce, i.e. the working efficiency of device reduces, and experiment progress is prone to delay.

[0005] Therefore, it is necessary to provide a kind of waste oil filtering device of oilfield cementing experiment to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In view of the above, in order to overcome the prior art defects, the utility model provides a kind of waste oil filtering device of oilfield cementing experiment can improve the operation efficiency of device.

[0007] To achieve the above object, the utility model employs the technical scheme as follows:

[0008] The waste oil filtering device of oilfield cementing experiment includes: a primary filter box and a secondary filter box, a top cover is installed on the primary filter box, a filter mechanism is arranged in the primary filter box, the filter mechanism includes a rotating shaft installed in the primary filter box, four support plates are fixedly installed on the rotating shaft, a filter screen is installed on the outer side of the support plate, an outer fixed plate, an inner fixed plate and a large fixed plate are fixedly installed on both sides of the support plate, a sealing ring is installed between the inner fixed plate and the outer fixed plate, and the sealing ring is fixedly connected with the feed pipe.

[0009] Preferably, a supporting groove is arranged on the support plate.

[0010] Preferably, a plurality of plug-in grooves are formed in the supporting groove, and a plurality of plug-in connectors are installed on both sides of the filter screen.

[0011] Preferably, two handles are installed on the filter screen.

[0012] Preferably, a water inlet pipe is installed on the primary filter box.

[0013] Preferably, a motor is installed at the bottom of the primary filter box, a driving pulley is installed at one end of the motor, a driven pulley is installed at the end of the rotating shaft, and the driving pulley is connected with the driven pulley.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model sets a filter mechanism with four independent cavity structures in the primary filter box, and a filter screen is installed in each cavity, the filter mechanism is driven to rotate by the rotating shaft, the four cavities are used for waste oil primary filtration operation in turn, the filter screen can be cleaned in turn without stopping the device, and the operation efficiency of the device is improved.

[0016] (2) The utility model sets a supporting groove on the support plate, which can conveniently limit the filter screen and make its position accurate.

[0017] (3) The utility model sets a plug-in groove and a plug-in connector, the plug-in connector can be plugged into the plug-in groove, and the filter screen can be conveniently disassembled and maintained.

[0018] (4) The utility model installs two handles on the filter screen, which can conveniently disassemble and maintain the filter screen, and is more convenient to use.

[0019] (5)The utility model discloses a install water inlet pipe on primary filter box, can conveniently dilute waste oil, reduce the viscosity of waste oil, reduce the possibility of waste oil to block filter screen, improve the through speed of waste oil in primary filter box.

[0020] (6)The utility model discloses a set up motor, drive pulley and driven pulley, can conveniently drive rotation shaft rotation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides the structure schematic diagram of waste oil filter device of oilfield cementing experiment for the utility model provides the structure schematic diagram of waste oil filter device of oilfield cementing experiment.

[0022] Figure 2 For Figure 1 Another direction's structure schematic diagram of waste oil filter device of oilfield cementing experiment shown in the figure.

[0023] Figure 3 For Figure 1 The structure schematic diagram of filter mechanism in waste oil filter device of oilfield cementing experiment shown in the figure.

[0024] Figure 4 For Figure 1 The explosion structure schematic diagram of filter mechanism in waste oil filter device of oilfield cementing experiment shown in the figure.

[0025] Figure 5 For Figure 1 The connecting structure schematic diagram of rotation shaft and support plate in waste oil filter device of oilfield cementing experiment shown in the figure.

[0026] Figure 6 For Figure 1 The structure schematic diagram of filter screen in waste oil filter device of oilfield cementing experiment shown in the figure.

[0027] Figure 7 For Figure 1 Another view's structure schematic diagram of filter mechanism in waste oil filter device of oilfield cementing experiment shown in the figure.

[0028] Among them, the name corresponding to the figure mark is: 1-primary filter box, 2-secondary filter box, 3-top cover, 4-filter mechanism, 5-feeding pipe, 6-rotation shaft, 7-support plate, 8-filter screen, 9-outer fixed plate, 10-inner fixed plate, 11-sealing ring, 12-large fixed plate, 13-chock, 14-insertion slot, 15-insertion head, 16-handle, 17-water inlet pipe, 18-motor, 19-drive pulley, 20-driven pulley. DETAILED DESCRIPTION

[0029] The utility model will be further explained below combining with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.

[0030] Embodiment 1:

[0031] As Figures 1-7 shown, the waste oil filtering device for oilfield cementing experiment provided by the utility model, including: primary filter box 1 and secondary filter box 2, wherein the secondary filter box 2 adopts the technical scheme disclosed in CN217961478U, and its structure will not be repeated here, the present application is the improvement of the primary filter box 1, in the embodiment, the primary filter box 1 is provided with a top cover 3 that can be turned up, the primary filter box 1 is provided with a filter mechanism 4, one side of the primary filter box 1 is provided with a feeding pipe 5, the feeding pipe 5 is connected with the filter mechanism 4, the filter mechanism 4 comprises a rotating shaft 6 installed in the primary filter box 1, four supporting plates 7 are uniformly installed on the rotating shaft 6, the outer side of the supporting plate 7 is provided with a filter screen 8, the outer side of the supporting plate 7 is fixedly provided with an outer fixed plate 9, an inner fixed plate 10 and a large fixed plate 12, wherein a sealing ring 11 is installed between the inner fixed plate 10 and the outer fixed plate 9, the sealing ring 11 is connected with the feeding pipe 5, the feeding pipe 5 penetrates through the sealing ring 11, through the above structure, the filter mechanism 4 becomes a square box structure with four independent cavities, and each cavity is provided with a filter plate 8 on the outer side, and the feeding pipe 5 is aligned with the lowermost cavity, in use, the waste oil of the oilfield cementing experiment enters the lowermost cavity of the filter mechanism 4 from the feeding pipe 5, is filtered through the filter screen 8 at the bottom of the cavity, and the cement particles with large particles in the waste oil are removed, and then the waste oil is input into the secondary filter box 2 for subsequent treatment, when the filter screen 8 below the filter mechanism is seriously blocked, the rotating shaft 6 can be driven to rotate by 90 degrees, and then the four cavities of the filter mechanism 4 are used in turn, when the filter screen 8 that is seriously blocked is rotated to the uppermost position, the top cover 3 is opened, the filter screen 8 is disassembled and cleaned, and during this period, the filter screen 8 at the lowermost position can normally work, the device does not need to stop, and then the device can continuously perform the filtering operation, greatly improving the operation efficiency of the device and not easily delaying the progress of the experiment.

[0032] By setting the filter mechanism 4 with four independent cavity structures in the primary filter box 1, and installing the filter screen 8 in each cavity, the filter mechanism 4 is driven to rotate by the rotating shaft 6, the four cavities are used in turn for the waste oil filtering operation, the filter screen 8 can be cleaned in turn without stopping the device, and the operation efficiency of the device can be improved.

[0033] Embodiment 2:

[0034] As Figure 5 shown, the supporting plate 7 is provided with a groove 13, the edge of the filter screen 8 is lapped on the groove 13 and fixed, and the position of the filter screen 8 is limited by the groove 13, so that the position is accurate.

[0035] By setting the support plate 7 with the bracket 13, the filter screen 8 can be conveniently limited, and its position is accurate.

[0036] Embodiment 3:

[0037] As shown in Figure 5 and Figure 6 A plurality of plug-in grooves 14 are formed on the bracket 13, and a plurality of plug-in heads 15 are installed on both sides of the filter screen 8. When in use, the filter screen 8 is slightly bent as a whole, so that the plug-in heads 15 on both sides are close to each other, and then the plug-in heads 15 on both sides are inserted into the corresponding plug-in grooves 14, so that the filter screen 8 can be quickly installed.

[0038] By setting the plug-in groove 14 and the plug-in head 15, the plug-in head 15 and the plug-in groove 14 can be plugged in, so that the filter screen 8 can be conveniently disassembled and maintained.

[0039] Embodiment 4:

[0040] As shown in Figure 6 Two handles 16 are installed on the filter screen 8. When in use, the filter screen 8 can be conveniently bent and moved by holding the two handles 16, so that the use is more convenient.

[0041] By installing two handles 16 on the filter screen 8, the filter screen 8 can be conveniently disassembled and used more conveniently.

[0042] Embodiment 5:

[0043] As shown in Figure 1 A water inlet pipe 17 is installed on the primary filter box 1. When in use, the primary filter box 1 can be filled with water through the water inlet pipe 17 for washing and diluting the waste oil, so as to reduce the viscosity of the waste oil, reduce the possibility of the waste oil blocking the filter screen 8, and improve the passing speed of the waste oil in the primary filter box 1.

[0044] By installing the water inlet pipe 17 on the primary filter box 1, the waste oil can be conveniently diluted, the viscosity of the waste oil can be reduced, the possibility of the waste oil blocking the filter screen 8 can be reduced, and the passing speed of the waste oil in the primary filter box 1 can be improved.

[0045] Embodiment 6:

[0046] As shown in Figure 1 A motor 18 is installed at the bottom of the primary filter box 1. The motor 18 is a low-speed motor, one end of which is provided with a driving pulley 19, and the end of the rotating shaft 6 is provided with a driven pulley 20. The driving pulley 19 and the driven pulley 20 are connected through a belt. When in use, the driving pulley 19 is driven to rotate at low speed by the motor 18, the driven pulley 20 is driven to rotate by the driving pulley 19, and the rotating shaft 6 is driven to rotate by the driven pulley 20.

[0047] By setting the motor 18, drive pulley 19 and driven pulley 20, can facilitate drive rotating shaft 6 rotation.

[0048] Working principle: when using, the waste oil of oilfield cementing experiment enters the lowermost cavity of the filtering mechanism 4 from the feed pipe 5, and the larger cement particles in the waste oil are removed through the filter screen 8 at the bottom of the cavity, and then the waste oil is input into the secondary filtering box 2 for subsequent treatment. When the filter screen 8 below the filtering mechanism is seriously blocked, the rotating shaft 6 is driven to rotate 90 degrees, so that the four cavities of the filtering mechanism 4 are used in turn. When the seriously blocked filter screen 8 is rotated to the uppermost position, the top cover 3 is opened, the filter screen 8 is disassembled and cleaned, and during this period, the lowermost filter screen 8 can normally work, so the device does not need to stop working, and the device can continuously work, greatly improving the working efficiency of the device and not easily delaying the progress of the experiment.

Claims

1. A waste oil filtration device for oilfield cementing experiments, characterized in that, Include: Primary filter box (1) and secondary filter box (2); The top cover (3) is installed on the primary filter box (1), one side of the primary filter box (1) is provided with a feeding pipe (5), and the primary filter box (1) is provided with a filter mechanism (4); The filter mechanism (4) comprises a rotating shaft (6) installed in the primary filter box (1), four support plates (7) are fixedly installed on the rotating shaft (6), a filter screen (8) is installed on the outer side of the support plate (7), outer fixed plates (9), inner fixed plates (10) and large fixed plates (12) are fixedly installed on both sides of the support plate (7), a sealing ring (11) is installed between the inner fixed plate (10) and the outer fixed plate (9), and the sealing ring (11) is fixedly connected with the feeding pipe (5).

2. The waste oil filtering device for oilfield cementing experiment of claim 1, wherein, The support plate (7) is provided with a supporting groove (13).

3. The waste oil filtering device for oilfield cementing experiment of claim 2, wherein, A plurality of plug-in grooves (14) are formed in the supporting groove (13), and a plurality of plug-in heads (15) are installed on both sides of the filter screen (8).

4. The waste oil filtering device for oilfield cementing experiment of claim 1, wherein, Two handles (16) are installed on the filter screen (8).

5. The waste oil filtering device for oilfield cementing experiment of claim 1, wherein, The primary filter box (1) is provided with a water inlet pipe (17).

6. The waste oil filtering device for oilfield cementing experiment of claim 1, wherein, A motor (18) is installed at the bottom of the primary filter box (1), a driving belt pulley (19) is installed at one end of the motor (18), a driven belt pulley (20) is installed at the end of the rotating shaft (6), and the driving belt pulley (19) is connected with the driven belt pulley (20).

Images