CN211688388U

CN211688388U - Slag scraping machine of water treatment air floatation equipment

Info

Publication number: CN211688388U
Application number: CN202020102799.6U
Authority: CN
Inventors: 柳国政; 刘萍; 张志权; 杜道平
Original assignee: Daqing Haiyouqing Petroleum Science & Technology Co ltd
Current assignee: Daqing Haiyouqing Petroleum Science & Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-16
Anticipated expiration: 2030-01-17

Abstract

The invention belongs to the technical field of oil-containing sewage treatment devices in oil fields, and particularly relates to a residue scraping machine of water treatment air floatation equipment, which comprises a water treatment container, a motor, a speed reducer, a driving shaft, a driven shaft, a driving chain wheel, a driven chain wheel, chains, a scraper component bearing and a bearing seat, wherein the driving shaft and the driven shaft are respectively fixed at two opposite ends of the upper part of the water treatment container through the bearing and the bearing seat, two closed-loop chains are respectively matched with two pairs of chain wheels, the scraper component comprises a scraper body, a buoy fixing belt and a pin shaft, the scraper body is formed by bending and integrally forming a plate, the cross section of the scraper body is in an L shape, two ends of one long edge of the scraper body are hinged with the chains through the pin shaft, the buoy fixing belt fixes the buoy on the bending surface of the scraper body far away from the, the collision of two structural features has produced powerful multiple effect in the water treatment mud scraping field.

Description

Slag scraping machine of water treatment air floatation equipment

Technical Field

The invention belongs to the technical field of oil-containing sewage treatment devices in oil fields, and particularly relates to a slag scraper used in water treatment air floatation separation equipment.

Background

In the treatment of oilfield produced water, air floatation equipment is often used for separating and removing free oil and suspended particles which cannot be removed in the sedimentation process in sewage. The principle is that gas-dissolving water dissolved in air is mixed into water to be treated through a releaser, micro bubbles (10-30 mu m) are released uniformly by sudden pressure reduction, dense micro bubbles collide and adsorb micro suspended particles in the water in the rising process, and suspended matters wrapping the bubbles continuously float upwards and are continuously accumulated on the liquid surface, so that the separation of the suspended matters is realized. The slag scraper is used for scraping the scum of the foam-shaped solid floating on the liquid surface to the discharge end so as to collect and discharge the scum.

The common slag scraper is generally composed of a scraper, a chain, a driving shaft, a driven shaft, a bearing support, a motor and a speed reducer. The driving shaft and the driven shaft are respectively fixed at two opposite ends of the upper part of the water treatment container through a bearing and a bearing support; two ends of the two shafts are respectively provided with a chain wheel, and the two closed-loop chains are respectively matched with the two pairs of chain wheels; a plurality of scraping plates are vertically and uniformly distributed on a closed ring formed by the whole chain along the direction of the chain; the motor drives the transmission shaft and the chain wheel through the speed reducer to drive the two chains to synchronously move, the scraper moves to the other end from one end of the bottom of the chain ring along with the chains, then bypasses the chain wheel at the opposite end, returns to the starting end from the upper part, and sequentially reciprocates; the scraper is arranged below the chain ring from one end to the other end in a stroke, one part of the scraper is positioned below the liquid level and is used for scraping scum on the liquid level, and when the scum scraped by the scraper is close to the tail end scum outlet, the accumulated scum can be pushed into the scum outlet in a centralized way through an upward slope.

The scraper mounting rack of the existing slag scraper is fixedly connected with a chain at a right angle; the scraper is fixed on the scraper mounting frame and made of flexible materials, so that the scraper can pass through the slag discharge hole slope.

The existing slag scraper still has the following problems when in use:

due to the limitation of mounting accuracy, abrasion or deformation and other factors, the chain wheels on the two sides may have rotation phase difference, the fixed rigid connection part between the chain and the scraper mounting seat has stress concentration, fatigue fracture is easy to occur frequently, the scraper falls off, when only one end of the scraper is separated from the chain, the other end of the scraper can cause the other chain to be tired, so that the scraper is separated from the groove or damaged, and immediate production stop and maintenance are needed.

In order to prevent the flexible scraper from deforming under stress in the scraping process, the scraper is usually thickened, so that the scraper is thicker and heavier, the weight is increased, and when the chain is very long and a nylon chain is used, the chain is also very heavy, and chain brackets are needed for the upper and lower sections of the chain to bear the weight of the chain and the scraper; in many cases, due to the limitation of a connecting structure of the scraper and the chain and the field space, the arrangement of a bracket and a track at the lower section of the chain is difficult;

the liquid level of the liquid to be treated usually floats up and down by about 100mm, and the scraper blade is required to be wider to ensure that the scraper blade is always inserted below the liquid level surface.

In order to pass through the slope of the slag discharging port, a part of flexible materials are required to be used for the prior scraper, and the flexible materials are easy to deform.

The chain is very long, if the lower section of the chain is not provided with a bracket and is influenced by gravity, the lower section of the chain is difficult to avoid into an arc shape, the depths of the groups of the scrapers at the lower section of the chain which are vertically inserted below the liquid level are different, the depth of the scrapers at the arc top of the lower section of the chain which are inserted is too deep, so that the resistance is large, the scrapers at the arc edge of the lower section of the chain which are inserted is too shallow or not inserted below the liquid level, so that the scraping is not in place or the scraping function is.

Disclosure of Invention

In order to solve the use problems of the existing residue scraper in the background technology, the invention provides the residue scraper of the water treatment air floatation equipment, which has the characteristics of difficult deformation of a scraper component, consistent depth of the scraper extending into the residue scraper, good scraping effect and the like.

The technical scheme provided by the invention is as follows: a water treatment air floatation device slag scraping machine comprises a water treatment container, a motor, a speed reducer, a driving shaft, a driven shaft, a driving chain wheel, a driven chain wheel, chains, a scraper component bearing and a bearing seat, wherein the driving shaft and the driven shaft are respectively fixed at two opposite ends of the upper part of the water treatment container through the bearing and the bearing seat, the driving chain wheel is fixedly arranged at two ends of the driving shaft, the driven chain wheel is fixedly arranged at two ends of the driven shaft, two closed-loop chains are respectively matched with two pairs of chain wheels, the scraper component is not less than 1 group, the scraper component is perpendicular to the trend of the chains and is arranged on a closed loop formed by the whole chains, the motor drives the driving shaft and the driving chain wheel to rotate through the speed reducer to drive the two chains to synchronously move, the scraper component moves along with the chain loop, and comprises a scraper body, the scraper blade body bend integrated into one piece for panel, the cross section of scraper blade body is the L type, the both ends on one of them long limit of scraper blade body are articulated through round pin axle and chain to the scraper blade body can rotate relative to the chain, the flotation pontoon fixed band fix the flotation pontoon on the scraper blade body face of bending of keeping away from the chain.

The two ends of the scraper body are hinged with the chain through the middle connecting piece, and the scraper body is hinged with the middle connecting piece through the movable shaft.

The float bowl is fixedly installed on the back side of the bent scraper body.

The invention has the beneficial effects that:

1. the chain and the scraper component adopt a hinged mode, and a floating barrel is arranged on the scraper body. Firstly, one end of the scraper body can float up and down along with the liquid level under the driving of the buoyancy of the buoy, so that a part of the scraper body is always inserted below the liquid level, the scraper does not need to be wide, and the whole weight of the scraper is reduced; secondly, the depth of all the scraper assemblies inserted below the liquid level at the lower section of the chain is ensured to be the same, compared with the prior art, the problem that the scraper assemblies at the middle part of the lower section of the chain are inserted too deeply and the scraper assemblies at the two sides are inserted too shallowly is avoided, the problem of uneven scraping is solved, and the scraping effect is well improved; thirdly, the slope of the slag discharging port is not required to pass through by means of deformation of the scraper component; fourthly, due to the buoyancy of the floating barrel, the load of the dead weight of the scraper body on the chain is reduced, and the chain support of the lower section of the chain is omitted.

2. The scraper blade body is formed by bending rigid materials integrally, a folded plate structure rigid body is formed, and the scraper blade body is very small in deformation when stressed, so that the concentrated stress of a connecting point of the scraper blade body and a chain is reduced.

3. Compared with the prior art that the chain and the scraper mounting seat are fixedly and rigidly connected, the chain and the scraper assembly are hinged, so that the fracture of the joint of the scraper and the chain caused by stress concentration is avoided.

4. Because the two ends of the scraper body are respectively connected with the two chains, the two chains are difficult to complete, if the chains and the scraper are in hard connection, the generated torque can generate concentrated stress at the connection part, and the connection point structure and the adjacent related parts of the chains are easy to damage; the scraper body is connected with the chain through two mutually vertical shafts, has two shafts and four degrees of freedom, can not generate torque in the operation process, and prolongs the service life of the whole device.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a partial structural schematic diagram of the present invention.

In the figure: 1-, 2-driving shaft, 3-driving chain wheel, 4-driven shaft, 5-driven chain wheel, 6-chain, 7-scraper component, 71-pin shaft, 72-float, 73-float fixing belt, 74-scraper body, 75-middle connecting piece, 76-movable shaft, 77-connecting hole, 8-liquid level and 9-scum level.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment comprises a water treatment container, a motor, a speed reducer, a driving shaft 2, a driven shaft 4, a driving chain wheel 3, a driven chain wheel 5, chains 6, a scraper assembly 7, a bearing and a bearing seat, wherein the driving shaft 2 and the driven shaft 4 are respectively fixed at two opposite ends of the upper part of the water treatment container through the bearing and the bearing seat, the driving chain wheel 3 is fixedly arranged at two ends of the driving shaft 2, the driven chain wheel 5 is fixedly arranged at two ends of the driven shaft 4, the two closed-loop chains 6 are respectively matched with the two pairs of chain wheels, the scraper assembly 7 is not less than 1 group, the scraper assembly 7 and the chains 6 are perpendicular to each other and are uniformly arranged on a closed ring formed by the whole chains 6, the motor drives the driving shaft 2 and the driving chain wheel 3 to rotate through the speed reducer to drive the two chains 6 to synchronously move, the scraper assembly 7 moves along, and will not be described in detail herein.

The innovation points of the invention are as follows: the scraper component 7 comprises a scraper body 74, a buoy 72, a buoy fixing belt 73 and a pin shaft 71, wherein the scraper body 74 is formed by bending plates into a whole, the cross section of the scraper body 74 is L-shaped, the L-shaped bending is used for enhancing the deformation resistance of the scraper and improving the rigidity of the scraper, and the scraper body 74 is deformed very little when stressed, so that the concentrated stress of the connecting point of the scraper body 74 and the chain 6 is reduced.

Compared with the prior art in which the chain 6 and the scraper mounting seat are fixedly and rigidly connected, the scraper body 74 has the advantages that the chain 6 and the scraper component 7 are hinged, and the fracture of the connection between the scraper and the chain 6 caused by stress concentration is avoided.

The utility model discloses a scraper blade assembly 7, including scraper blade body 74, flotation pontoon fixed band 73, the flotation pontoon 72 is fixed on the scraper blade body 74 face of bending of keeping away from chain 6 with the flotation pontoon 72, flotation pontoon 72 fixed mounting is in the scraper blade body 74 back side of bending, because the opposite side of back is for scraping the sediment side, when scraper blade body 74 gets into the chain 6 hypomere through driven sprocket 5, receive the dead weight effect, one side flagging of scraper blade body 74 inserts below dross face 9, simultaneously with the flotation pontoon 72 of scraper blade body 74 fixed together also partially sink below dross face 9, scraper blade assembly 7 stabilizes at last in the balanced position of buoyancy and gravity, at this moment, the lower level of scraper blade body 74 is below the liquid level, the.

The chain 6 and the scraper component 7 are hinged, and the floating barrel 72 is arranged on the scraper body 74, so that the collision of the two structural characteristics produces strong multiple effects in the field of water treatment and mud scraping. Firstly, one end of the scraper plate body 74 can float up and down along with the liquid level under the driving of the buoyancy of the buoy 72, so that a part of the scraper plate body 74 is ensured to be inserted below the liquid level 8 all the time, the scraper plate does not need to be wide, and the whole weight of the scraper plate is reduced; secondly, the depth of all the scraper assemblies 7 at the lower section of the chain 6 inserted below the liquid level is ensured to be the same, compared with the prior art, the problem that the scraper assemblies 7 at the middle part of the lower section of the chain 6 are inserted too deeply and the scraper assemblies 7 at the two sides are inserted too shallowly is avoided, the problem of uneven scraping is solved, and the scraping effect is well improved; thirdly, the slope of the slag discharging hole is not required to pass through by means of deformation of the scraper component 7; fourthly, due to the buoyancy of the buoys 72, the load of the scraper body 74 on the chain 6 by its own weight is reduced, and the chain support of the lower chain 6 is omitted.

Referring to fig. 3, two ends of the scraper body 74 are connected with the chain through the middle connecting piece 75, one end of the middle connecting piece 75 is connected with the chain 6 through a pin shaft, the other end of the middle connecting piece 75 is hinged with the scraper body 74 through the movable shaft 76, the scraper body 74 is connected with the chain through two mutually perpendicular shafts, two shafts and four degrees of freedom are provided, torque cannot be generated in the installation or operation process, and the service life of the whole device is prolonged.

Claims

1. The utility model provides a sediment machine is scraped to water treatment air supporting equipment, includes water treatment container, motor, reduction gear, drive shaft (2), passive axle (4), driving sprocket (3), passive sprocket (5), chain (6), scraper blade subassembly, bearing and bearing frame, its characterized in that: scraper blade subassembly include scraper blade body (74), flotation pontoon (72), flotation pontoon fixed band (73) and round pin axle (71), scraper blade body (74) bend integrated into one piece for panel, the cross section of scraper blade body (74) is the L type, the both ends on one of them long limit of scraper blade body (74) are passed through round pin axle (71) and are articulated with chain (6) to scraper blade body (74) can rotate chain (6) relatively, flotation pontoon fixed band (73) fix flotation pontoon (72) on scraper blade body (74) the face of bending far away from chain (6).

2. The water treatment air-flotation device slag scraping machine according to claim 1, characterized in that: the scraper chain is characterized in that two ends of the scraper body (74) are hinged with the chain (6) through middle connecting pieces (75), and the scraper body (74) is hinged with the middle connecting pieces (75) through movable shafts (76).

3. The water treatment air-flotation device slag scraping machine according to claim 1, characterized in that: the float bowl (72) is fixedly arranged on the back side of the ridge of the bent scraper body (74).