CN219384985U - Solid-liquid separation device for oil field sewage sludge - Google Patents

Abstract

The utility model belongs to the technical field of oilfield environment-friendly equipment, and particularly relates to an oilfield sludge solid-liquid separation device which comprises a motor, a speed reducer, a gear box, a discharging hopper, a liquid collecting hopper, a liquid discharge pipe, a liquid discharge pump and 5 variable-pitch spiral solid-liquid separation cylinders, wherein the speed reducer is arranged on the motor; the gear box comprises a driving shaft, a transition driving shaft, a first driven shaft and a second driven shaft; the variable pitch spiral solid-liquid separation barrel comprises a feed hopper, an outer barrel and a variable pitch spiral rod, wherein the variable pitch spiral rod is sequentially divided into a first wide pitch spiral blade section, a first narrow pitch spiral blade section, a second wide pitch spiral blade section and a second narrow pitch spiral blade section; the motor is connected with a speed reducer, the speed reducer is connected with a driving shaft of a gear box, and a transmission shaft of the gear box is connected with variable pitch screw rods of 5 variable pitch screw solid-liquid separation cylinders; the blanking barrel at the bottom of the blanking hopper is inserted into the feeding hopper, and the two sieve pore section outer barrels of the variable-pitch spiral solid-liquid separation barrel are both positioned in the liquid collecting hopper. Improves the production efficiency, reduces the production cost, is economical and environment-friendly, and saves energy.

Description

Solid-liquid separation device for oil field sewage sludge

Technical Field

The utility model belongs to the technical field of oilfield environment-friendly equipment, and particularly relates to an oilfield sludge solid-liquid separation device.

Background

The existing solid-liquid separation device for the dirty oil sludge is only suitable for separating and treating the dirty oil sludge of a large batch of oil fields. For a small amount of sludge generated by maintenance of a metering room, an oil transfer station or a well site, firstly, the sludge is packaged and then is conveyed to a sludge treatment plant for treatment; and secondly, a small incinerator is used for carrying out incineration treatment on a small amount of dirty oil sludge, and after the incineration reaches the standard, the treatment such as subsequent burial is carried out. On the one hand, if the oily sludge containing oil and water is directly packaged and transported, the transportation cost is increased; on the other hand, if the dirty oil sludge containing oil and water is directly incinerated, on one hand, crude oil in the dirty oil sludge is not recovered, so that energy waste is caused, and on the other hand, the water content of the wet oil sludge is relatively high, the incineration efficiency is affected, and unnecessary energy waste is also caused. Patent document CN201621185932.9 discloses a bagged oily sludge pretreatment device, which is low in efficiency although solid-liquid separation of the oily sludge is realized by a variable-pitch screw conveying cylinder, on one hand, one motor only drives one variable-pitch screw conveying cylinder, so that the solid-liquid separation efficiency is low; on the other hand, the variable pitch spiral conveying cylinder only has one section of variable pitch spiral section, so that the effect of solid-liquid separation is reduced.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the efficient and environment-friendly oilfield sludge solid-liquid separation device, which realizes solid-liquid separation by simultaneously driving 5 variable-pitch spiral solid-liquid separation cylinders through one motor through a five-shaft gear box, improves the production efficiency and reduces the production cost. On the other hand, each variable pitch spiral solid-liquid separation cylinder is provided with a variable pitch spiral section at two ends, so that the solid-liquid separation effect is improved. The device is suitable for treating a small amount of oil sludge, is economical to use, and is energy-saving and environment-friendly.

The utility model adopts the technical scheme that: the oil field oil sludge solid-liquid separation device comprises a motor, a speed reducer, a gear box, a discharging hopper, a liquid collecting hopper, a liquid discharge pipe, a liquid discharge pump and 5 variable-pitch spiral solid-liquid separation cylinders; the gear box comprises a driving shaft, 2 transition transmission shafts, 2 first driven shafts and 2 second driven shafts, wherein the driving shaft drives the transition transmission shafts through gear transmission, the transition transmission shafts drive the second driven shafts through gear transmission, and the transition transmission shafts drive the first driven shafts through 3 bevel gears; the bottom of the discharging hopper is provided with 5 discharging barrels; the variable pitch spiral solid-liquid separation barrel comprises a feed hopper, an outer barrel and a variable pitch spiral rod, wherein the variable pitch spiral rod is arranged in the outer barrel through a bearing and is sequentially divided into a first wide pitch spiral blade section, a first narrow pitch spiral blade section, a second wide pitch spiral blade section and a second narrow pitch spiral blade section, and sieve holes uniformly distributed in circumference are formed in the outer barrel walls of the first narrow pitch spiral blade section and the second narrow pitch spiral blade section; an output shaft of the motor is connected with an input shaft of the speed reducer, an output shaft of the speed reducer is connected with a driving shaft of the gear box, and the driving shaft of the gear box, the 2 first driven shafts and the 2 second driven shafts are respectively connected with variable-pitch screw rods of the 5 variable-pitch screw solid-liquid separation cylinders; the feeding hopper is characterized in that 5 blanking barrels at the bottom of the blanking hopper are respectively inserted into the feeding hopper of the variable-pitch spiral solid-liquid separation barrel, two sieve pore section outer barrels of the 5 variable-pitch spiral solid-liquid separation barrels are both positioned in the liquid collecting hopper, and a liquid discharge pipe is arranged at the bottom of the liquid collecting hopper and communicated with the liquid discharge pump.

Further, the diameter of the sieve holes is not more than 4 mm.

Further, the motor, the speed reducer, the gear box and the variable pitch spiral solid-liquid separation barrel are arranged and fixed on the supporting frame.

Further, a ball valve is arranged on the liquid discharge pipe.

Further, the first and second narrow pitch flight sections are not less than 1 meter in length.

The utility model has the beneficial effects that: the utility model provides a high-efficient environmental protection's oil field oil sludge solid-liquid separation device realizes that a motor drives 5 pitch spiral solid-liquid separation section of thick bamboo simultaneously through five gear boxes and realizes solid-liquid separation, has improved production efficiency, reduces and is manufacturing cost on the one hand. On the other hand, each variable pitch spiral solid-liquid separation cylinder is provided with a variable pitch spiral section at two ends, so that the solid-liquid separation effect is improved. The device is suitable for treating a small amount of oil sludge, can carry out subsequent treatment after bagging the oil sludge after solid-liquid separation, can also carry out incineration treatment on the oil sludge after solid-liquid separation, and is economical to use, energy-saving and environment-friendly.

Drawings

Fig. 1 is a schematic diagram of a front view structure of a first embodiment;

FIG. 2 is a schematic top view of the first embodiment;

FIG. 3 is a schematic diagram of the transmission of the gearbox of the first embodiment;

FIG. 4 is a schematic top view of the blanking hopper in the first embodiment;

FIG. 5 is a schematic side view of the blanking hopper in the first embodiment;

FIG. 6 is a schematic diagram showing the front view of a variable pitch screw solid-liquid separation cartridge according to the first embodiment;

FIG. 7 is a schematic top view of a variable pitch screw solid-liquid separation cartridge according to the first embodiment;

fig. 8 is a schematic front view of the outer cylinder in the first embodiment.

Detailed Description

Examples

Referring to the figures, the oilfield sewage sludge solid-liquid separation device comprises a motor 1, a speed reducer 2, a gear box 3, a blanking hopper 4, a liquid receiving hopper 5, a liquid discharge pipe 6, a liquid discharge pump 7 and 5 variable-pitch spiral solid-liquid separation cylinders 8; the gear box 3 comprises a driving shaft 31, 2 transitional driving shafts 32, 2 first driven shafts 33 and 2 second driven shafts 34, wherein the driving shaft 31 drives the transitional driving shafts 32 through gear transmission, the transitional driving shafts 32 drive the second driven shafts 34 through gear transmission, and the transitional driving shafts 32 drive the first driven shafts 33 through 3 bevel gears; the bottom of the discharging hopper 4 is provided with 5 discharging barrels 41; the variable pitch spiral solid-liquid separation cylinder 8 comprises a feed hopper 81, an outer cylinder 82 and a variable pitch spiral rod 83, wherein the variable pitch spiral rod 83 is arranged in the outer cylinder 82 through a bearing, the variable pitch spiral rod 83 is sequentially divided into a first wide pitch spiral blade section 84, a first narrow pitch spiral blade section 85, a second wide pitch spiral blade section 86 and a second narrow pitch spiral blade section 87, and sieve holes 88 uniformly distributed in circumference are formed in the outer cylinder walls of the first narrow pitch spiral blade section 85 and the second narrow pitch spiral blade section 87; an output shaft of the motor 1 is connected with an input shaft of the speed reducer 2, an output shaft of the speed reducer 2 is connected with a driving shaft 31 of the gear box 3, and the driving shaft 31, 2 first driven shafts 33 and 2 second driven shafts 34 of the gear box 3 are respectively connected with variable pitch screw rods 83 of the 5 variable pitch screw solid-liquid separation cylinders 8; the 5 blanking barrels 41 at the bottom of the blanking hopper 4 are respectively inserted into the feed hopper 81 of the variable-pitch spiral solid-liquid separation barrel 8, the outer barrels of two sieve pore sections of the 5 variable-pitch spiral solid-liquid separation barrels 8 are both positioned in the liquid collecting hopper 5, the bottom of the liquid collecting hopper 5 is provided with a liquid discharge pipe 6, and the liquid discharge pipe 6 is communicated with the liquid discharge pump 7; the diameter of the mesh openings 88 is no greater than 4 mm; the motor 1, the speed reducer 2, the gear box 3 and the variable pitch spiral solid-liquid separation cylinder 8 are arranged and fixed on the support frame; a ball valve is arranged on the liquid discharge pipe 6; the first narrow pitch flight section 85 and the second narrow pitch flight section 87 are not less than 1 meter in length.

When the solid-liquid separation is carried out on the oily water-containing oil sludge of the oil field, the oil sludge respectively enters 5 variable-pitch spiral solid-liquid separation cylinders through 5 blanking cylinders of the blanking hopper to carry out the solid-liquid separation. The motor drives the pitch-changing screw rods of the 5 pitch-changing screw solid-liquid separation cylinders to rotate in the same direction through the gear boxes of the 5 output shafts. The dirty oil sludge is conveyed to the tail end in the separating cylinder, the dirty oil sludge is in a normal spiral conveying state when passing through the first wide-pitch spiral blade section, when the dirty oil sludge is conveyed to the first narrow-pitch spiral blade section, the dirty oil sludge is extruded for the first time because the pitch of the spiral blade is reduced, oily sewage in the extruded dirty oil sludge enters the liquid collecting hopper through the sieve pores, and the dirty oil sludge subjected to solid-liquid separation by the first extrusion is continuously conveyed to the tail end through the second wide-pitch spiral blade section. When the dirty oil sludge passes through the second narrow-pitch helical blade section, the dirty oil sludge is extruded for the second time, and the dirty oil sludge is discharged from the tail end of the outer cylinder after being subjected to the solid-liquid separation for the second time. The oil sludge after solid-liquid separation can be recovered by bagging for subsequent treatment, or the oil sludge after solid-liquid separation is transmitted into an incinerator for incineration treatment. The separated oily sewage is pumped to a storage tank through a liquid discharge pump or is integrated into an oily sewage pipe network for subsequent treatment. On the one hand, the five-axis gear box realizes that one motor drives 5 variable-pitch spiral solid-liquid separation cylinders simultaneously to realize solid-liquid separation, improves the production efficiency, and reduces the production cost. On the other hand, each variable pitch spiral solid-liquid separation cylinder is provided with a variable pitch spiral section at two ends, so that the solid-liquid separation effect is improved.

Claims (5)

1. The utility model provides an oil field fatlute solid-liquid separation device which characterized in that: the oilfield sewage sludge solid-liquid separation device comprises a motor (1), a speed reducer (2), a gear box (3), a discharging hopper (4), a liquid receiving hopper (5), a liquid discharge pipe (6), a liquid discharge pump (7) and 5 variable-pitch spiral solid-liquid separation cylinders (8); the gear box (3) comprises a driving shaft (31), 2 transitional driving shafts (32), 2 first driven shafts (33) and 2 second driven shafts (34), wherein the driving shaft (31) drives the transitional driving shafts (32) through gear transmission, the transitional driving shafts (32) drive the second driven shafts (34) through gear transmission, and the transitional driving shafts (32) drive the first driven shafts (33) through 3 bevel gears; the bottom of the discharging hopper (4) is provided with 5 discharging barrels (41); the variable-pitch spiral solid-liquid separation barrel (8) comprises a feed hopper (81), an outer barrel (82) and a variable-pitch spiral rod (83), wherein the variable-pitch spiral rod (83) is installed in the outer barrel (82) through a bearing, the variable-pitch spiral rod (83) is sequentially divided into a first wide-pitch spiral blade section (84), a first narrow-pitch spiral blade section (85), a second wide-pitch spiral blade section (86) and a second narrow-pitch spiral blade section (87), and sieve holes (88) uniformly distributed in circumference are formed in the outer barrel walls of the first narrow-pitch spiral blade section (85) and the second narrow-pitch spiral blade section (87); an output shaft of the motor (1) is connected with an input shaft of the speed reducer (2), an output shaft of the speed reducer (2) is connected with a driving shaft (31) of the gear box (3), and the driving shaft (31), 2 first driven shafts (33) and 2 second driven shafts (34) of the gear box (3) are respectively connected with variable-pitch spiral rods (83) of the 5 variable-pitch spiral solid-liquid separation cylinders (8); 5 feed cylinders (41) at the bottom of the feed hopper (4) are respectively inserted into a feed hopper (81) of a variable-pitch spiral solid-liquid separation cylinder (8), two sieve mesh section outer cylinders of the 5 variable-pitch spiral solid-liquid separation cylinders (8) are both positioned in a liquid collecting hopper (5), a liquid discharge pipe (6) is arranged at the bottom of the liquid collecting hopper (5), and the liquid discharge pipe (6) is communicated with a liquid discharge pump (7).

2. The oilfield sludge solid-liquid separation device according to claim 1, wherein: the diameter of the sieve holes (88) is not more than 4 mm.

3. The oilfield sludge solid-liquid separation device according to claim 1, wherein: the motor (1), the speed reducer (2), the gear box (3) and the variable-pitch spiral solid-liquid separation cylinder (8) are arranged and fixed on the support frame.

4. The oilfield sludge solid-liquid separation device according to claim 1, wherein: and a ball valve is arranged on the liquid discharge pipe (6).

5. The oilfield sludge solid-liquid separation device according to claim 1, wherein: the first narrow pitch flight section (85) and the second narrow pitch flight section (87) are not less than 1 meter in length.