CN110304747B

CN110304747B - Oil-water separator

Info

Publication number: CN110304747B
Application number: CN201910681967.3A
Authority: CN
Inventors: 王鑫琦
Original assignee: Guangdong Pushi Deze Environmental Protection Co ltd
Current assignee: Guangdong Pushi Deze Environmental Protection Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2024-02-20
Anticipated expiration: 2039-07-26
Also published as: CN110304747A

Abstract

The utility model discloses an oil-water separator. This scheme includes separator body and oil scraping device, oil scraping device includes oil scraping plate and drive assembly, drive assembly sets up outside the separator body, separator body top is provided with holds the chamber, still be provided with the apron on the separator body, drive assembly includes driving motor and chain drive assembly, chain drive assembly includes two sprockets and chain, two sprocket axis vertical settings are connected with the connecting rod on the oil scraping plate, be provided with coupling assembling on the chain, hold the bottom in chamber seted up with separator body inner chamber intercommunication logical groove, the connecting rod passes logical groove and is connected with the oil scraping plate, the width of logical groove is greater than the thickness of oil scraping plate. The driving assembly is arranged outside the separator body and in the accommodating cavity, the accommodating cavity is sealed by the cover plate, the through groove formed in the bottom of the accommodating groove is used for the connecting rod to drive the oil scraping plate to move in the separator body, and the oil scraping plate can be taken out from the through groove, so that the maintenance is convenient.

Description

Oil-water separator

Technical Field

The utility model relates to the field of oil-water separation, in particular to an oil-water separator.

Background

The oil-water separator is a device developed for recycling oil from an oil-water mixture.

At present, the oil-water separation mainly utilizes gravity sedimentation principle or other materialization methods to remove impurities or complete separation of oil and water according to different densities or chemical properties of water and oil.

The main oil-water separation methods include gravity separation, centrifugal separation, electric separation, adsorption separation, air-float separation, etc., wherein the gravity separation and air-float separation have low cost, and the centrifugal separation and starch particle have high cost.

The air-float method is a method for purifying water by forming tiny bubbles in water and carrying the floccules to float up to the liquid level. Provided that bubbles attached to the oil droplets can form oil and gas particles. The rising speed can be obviously improved by replacing the oil density with the particle density because the density difference between water and particles is increased due to the occurrence of bubbles and the particle diameter is larger than that of crude oil drops. I.e. when 1 bubble (or bubbles) is/are attached to 1 oil droplet, the vertical lifting speed can be increased, whereby oil droplets having a diameter much smaller than 50 μm can be removed.

In the prior patent, the Chinese utility model with the application number of 200820178124.9 discloses oil separation equipment, which comprises a box body, a filter screen, a bubble generator and an oil discharge device, wherein the box body of the oil separation equipment of the box body is divided into a water inlet chamber, a treatment chamber and a water discharge chamber which are mutually communicated at the bottom by a left folded plate and a right folded plate, the filter screen is arranged in the water inlet chamber, the treatment chamber is divided into a left treatment chamber and a right treatment chamber which are mutually communicated at the top by a lower folded plate, and the bubble generator is fixedly arranged at the bottom of the left treatment chamber. The oil discharging device comprises a circulating reciprocating oil scraping device driven by a motor, an oil collecting groove and an oil discharging pipe, wherein the oil collecting groove is fixedly arranged at the tail end of the circulating reciprocating oil scraping device and used for receiving dirty oil scraped by the oil scraping plate.

The oil separation device carries out solid-liquid separation on sewage entering the box body through the filter screen, coarse particles, large particles and residues are removed through the filter screen, bubbles are generated through the bubble generator, oil stains in the water are driven to float upwards by the floating bubbles, so that oil and water are separated, the upper-layer oil is circularly stirred into the oil collecting groove to be collected by the scraping plate of the oil scraping device, the lower-layer water enters the water draining chamber to be drained, the oil-water separation process is completed, and the recycling of the oil is realized.

However, after the oil scraping device is used for a period of time, the driving part and the oil scraping plate need to be maintained or replaced, and the oil scraping device is arranged in the inner cavity of the oil separating device, so that the oil-water separator with the oil scraping device is inconvenient to maintain.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an oil-water separator, which has the advantage of convenient maintenance by arranging an oil scraping device outside a separator body.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides an oil-water separator, includes separator body and oil scraping device, oil scraping device includes oil scraping plate and drive oil scraping plate reciprocating motion's drive assembly, drive assembly sets up outside the separator body, separator body top is provided with the holding drive assembly hold the chamber, still be provided with the lid on the separator body and close hold the apron in chamber, drive assembly includes driving motor and chain drive assembly, chain drive assembly includes two sprockets and with two sprocket meshing's chain, two sprocket axis is vertical to be set up, be connected with the connecting rod on the oil scraping plate, be provided with on the chain and connect the coupling assembling of connecting rod upper end, hold the bottom in chamber seted up with separator body inner chamber intercommunication lead to the groove, the connecting rod pass lead to the groove with the oil scraping plate is connected, the width of lead to the groove is greater than the thickness of oil scraping plate.

Through setting up like this, set up drive assembly in the external chamber that holds of separator to connect the scraping plate that is located the separator body through the connecting rod and connect, can take out scraping plate from logical groove, be convenient for maintain drive assembly and scraping plate, will hold the chamber lid through the apron and close, reduce the external debris of separator and get into the separator body by logical groove and to the liquid in it and cause the pollution, through setting up the axis of sprocket as vertical, and be connected sprocket and scraper blade through coupling assembling, thereby driving motor's corotation/upset can drive scraping plate round trip movement, thereby reach the purpose of separating oil reservoir and water layer in the liquid in the separator body.

Preferably, two oil scraping plates are arranged, and the two oil scraping plates are respectively positioned at two sides of the connecting line of the central lines of the two chain wheels.

Through setting up like this, set up two scraping oil boards respectively on the chain of sprocket center line both sides to when driving motor drive chain rotated, the direction of movement of the chain of sprocket center line both sides was opposite, and two scraping oil boards remove along with the chain, can scrape oil to the oil collecting groove alternately, improves the efficiency of scraping oil.

Preferably, the separator body comprises a solid-liquid separation chamber, an oil-water separation chamber and a drainage chamber, the oil scraping device is arranged in the oil-water separation chamber, two oil collecting grooves are arranged in the oil-water separation chamber, the two oil collecting grooves are arranged along the moving direction of the oil scraping plate, one oil collecting groove is arranged close to the solid-liquid separation chamber, and the other oil collecting groove is arranged close to the drainage chamber.

Through setting up like this, when driving motor drive chain rotated, the direction of movement of chain in sprocket center line both sides was opposite, and two scraping plates moved along with the chain, and two scraping plates that move towards opposite direction can scrape oil to the oil collecting groove of both sides respectively, further improves the efficiency of scraping oil.

Preferably, a separation plate is further arranged in the separator body, the separation plate is arranged on the central connecting line of the two chain wheels, and the lower end of the separation plate is positioned below the liquid level in the separator body.

Through setting up like this, when the chain in sprocket central line both sides drives the oil scraping plate towards opposite direction and is close to each other, the liquid level that the oil scraping plate of division board with both sides passed through keeps apart to avoid the oil reservoir of both sides to produce the interference when two oil scraping plates that move towards opposite direction are close to each other, be favorable to keeping the stability of the effect of oil scraping that makes a round trip each time.

Preferably, two driving motors are arranged, the two driving motors respectively drive the two chain wheels to rotate, and the driving directions of the two driving motors are opposite.

Through setting up like this, set up two driving motor, clearance and make two driving motor work in turn, because of the scraper blade needs the back and forth movement, when then only adopting a driving motor, driving motor need frequently carry out positive and negative rotation switching to can influence the life of motor.

Preferably, the connecting rod is further connected with a dust shielding plate, the dust shielding plate is located above the through groove, the separator body is provided with a containing groove for containing the dust shielding plate, and the dust shielding plate is detachably connected with the connecting rod.

Through setting up like this, dustproof sunshade is fixed with the connecting rod, follows the removal of connecting rod and remove, and dustproof sunshade is located the top of spout, through shelter from the impurity outside the separator body, reduces the possibility that causes the pollution to the liquid in the separator body.

Preferably, the dust shield is connected to the link by a screw.

Preferably, dust collecting grooves are formed in two sides of the dust shielding plate on the separator body, dust removing scraping plates are arranged on the oil-water separator, dust removing grooves for the dust shielding plate to penetrate through are formed in the dust removing scraping plates, and the dust removing grooves are in contact with the upper surface and two side surfaces of the dust shielding plate.

Through setting up like this, through setting up the dust removal scraper blade, the dust removal groove is passed to the dust removal sunshade, and then the dust removal scraper blade scrapes the impurity that is attached on dust removal sunshade upper surface and the side to the dust collection groove in, reduces the possibility that brings the impurity into the separator body because of the in-process that the dust removal sunshade removed along with the connecting rod.

Preferably, the connecting assembly comprises a fixed block, a movable block and a connecting piece, wherein the fixed block is fixed with the chain, the movable block is detachably connected with the fixed block through the connecting piece, and clamping grooves attached to the outer wall of the connecting rod are formed in the fixed block and the movable block.

Through the arrangement, when the connecting rod is connected, the connecting rod passes through the clamping groove between the fixed block and the movable block, the fixed block and the movable block are fixed through the connecting piece, and then the clamping groove on the fixed block and the movable block is abutted with the outer wall of the connecting rod, so that the connecting rod is fixed.

Preferably, one side of the movable block is hinged with the fixed block.

Through such setting, articulated movable block and fixed block, the trouble that need take off the movable block from the fixed block when reducing to dismantle, easy to assemble and dismantlement.

Preferably, an anti-slip rubber pad is arranged in the clamping groove.

Through setting up like this, the antiskid callus on the sole can protect the connecting rod on the one hand, avoids squeezing the connecting rod to cause the damage to the connecting rod, on the other hand can increase the joint strength of connecting rod and fixed block, connecting block, compensate the gap that probably appears between connecting rod and the grip slot that temperature, vibration arouse.

Preferably, the anti-skid rubber pad is provided with anti-skid grains.

Through such setting, the joint strength of connecting rod, fixed block, connecting block is further increased to anti-skidding line.

Compared with the prior art, the utility model has the beneficial technical effects that:

1. the driving assembly is arranged outside the separator body and in the accommodating cavity, the accommodating cavity is sealed by the cover plate, the through groove formed in the bottom of the accommodating groove is used for the connecting rod to drive the oil scraping plate to move in the separator body, and the oil scraping plate can be taken out from the through groove, so that the maintenance is convenient.

2. Through setting up two scrapers, scrape the oil in turn, improve the efficiency of scraping the oil.

3. Through setting up two oil sumps, cooperation round trip movement's two scraping plates, further improve the efficiency of scraping oil.

4. Through setting up the division board, reduce to produce the interference between two scraping boards that come and go and remove, keep the stability of scraping the oily effect.

5. By arranging two driving motors to alternately operate, the situation that the service life is shortened due to the fact that one motor needs to frequently operate in forward and reverse directions is avoided, and the maintenance period of a driving assembly is prolonged.

6. Through setting up coupling assembling to including fixed block, movable block and connecting piece, through setting up the centre gripping groove on fixed block and movable block, conveniently realize the detachable connection between connecting rod and the chain.

7. Through setting up the dustproof sunshade to the connecting rod removal, shield logical groove, reduce the dirt and pollute the inside liquid of separator body through logical groove.

8. Through setting up dustproof scraper blade and dust collection groove, clean the dust shutter, further reduce the dirt and pollute the inside liquid of separator body through logical groove.

Drawings

FIG. 1 is an overall schematic of a separator body in an embodiment of the utility model;

FIG. 2 is a schematic plan view of the interior of a separator body in an embodiment of the utility model;

FIG. 3 is a schematic perspective view of the interior of a separator body according to an embodiment of the present utility model;

FIG. 4 is a schematic top view of the separator body with the cover removed in accordance with an embodiment of the present utility model;

fig. 5 is an enlarged view of a portion a in fig. 4;

fig. 6 is an enlarged view of the portion B in fig. 4.

Wherein, the technical characteristics that each reference sign indicates are as follows:

1. a separator body; 101. a solid-liquid separation chamber; 102. a bubble generation chamber; 103. an oil-water separation chamber; 104. a drain chamber; 105. an oil sump; 106. an oil drain pipe; 107. a drainage channel; 108. a drain pipe; 109. an exhaust port; 2. an oil scraping device; 201. a wiper plate; 2011. a connecting rod; 20111. an abutting portion; 202. a drive assembly; 2021. a driving motor; 2022. a chain drive assembly; 20221. a sprocket; 20222. a chain; 3. a partition plate; 4. a filter screen; 5. a bubble generator; 6. a connection assembly; 601. a fixed block; 602. a movable block; 6021. a connecting sheet; 603. a connecting piece; 7. a partition plate; 8. a receiving plate; 9. a dust shield; 10. a storage groove; 11. a taking and placing groove; 12. a dust cover; 13. a screw; 14. a dust collection tank; 15. a dust removal scraper; 16. and a cover plate.

Detailed Description

The present utility model will be further described in detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, but the scope of the present utility model is not limited to the following specific examples.

Examples

Referring to fig. 1, 2 and 3, the present embodiment discloses an oil-water separator, which comprises a separator body 1 and an oil scraping device 2, wherein a partition board 3 is arranged in the separator body 1, the partition board 3 divides a space in the separator body 1 into a solid-liquid separation chamber 101, a bubble generation chamber 102, an oil-water separation chamber 103 and a drainage chamber 104, a filter screen 4 is arranged in the solid-liquid separation chamber 101 and is used for filtering solid impurities to realize solid-liquid separation;

the bubble generation chamber 102 is provided with a bubble generator 5, the oil scraping device 2 is arranged in the oil-water separation chamber 103, in the embodiment, the bubble generator 5 is a micro-bubble generator 5 commonly used in the market, the bubble generator 5 generates bubbles, and the floating bubbles float the greasy dirt in the sewage;

referring to fig. 2 and 3, two oil sumps 105 are disposed in the oil-water separation chamber 103, one of the oil sumps 105 is disposed near the solid-liquid separation chamber 101, the other oil sump 105 is disposed near the water drain chamber 104, an oil drain pipe 106 is disposed at the bottom of the oil sump 105 and is connected to the outside of the separator body 1, and an oil drain valve (not shown) is disposed on the oil drain pipe 106.

Referring to fig. 2 and 3, a drain tank 107 is disposed in the drain chamber 104, a drain pipe 108 is connected to the bottom of the drain tank 107, a drain valve (not shown in the figure) is disposed on the drain pipe 108, an exhaust port 109 is further disposed above the drain chamber 104, and an exhaust valve (not shown in the figure) is disposed at the exhaust port 109.

Referring to fig. 2, 3 and 4, the oil scraping device 2 includes an oil scraping plate 201 and a driving component 202 for driving the oil scraping plate 201 to reciprocate, the driving component 202 is disposed outside the separator body 1, a containing cavity (not labeled in the drawing) for containing the driving component 202 is disposed at the top of the separator body 1, and a cover plate 16 for covering the containing cavity is further disposed on the separator body 1;

referring to fig. 3 and 4, the driving assembly 202 includes a driving motor 2021 and a chain transmission assembly 2022, the chain transmission assembly 2022 includes two sprockets 20221 and a chain 20222 meshed with the two sprockets 20221, axes of the two sprockets 20221 are vertically arranged, a connecting rod 2011 is connected to the oil scraping plate 201, a connecting assembly 6 connected to an upper end of the connecting rod 2011 is arranged on the chain 20222, a through groove communicated with an inner cavity of the separator body 1 is formed in a bottom of the accommodating cavity, the connecting rod 2011 penetrates through the through groove and is connected with the oil scraping plate 201, and the width of the through groove is larger than the thickness of the oil scraping plate 201, so that the oil scraping plate 201 can be taken out from the through groove.

In this embodiment, the driving motor 2021 drives one of the sprockets 20221 to rotate through a belt transmission assembly.

As an alternative embodiment, the chain drive assembly 2022 in this embodiment may also be provided as a timing belt drive assembly.

Referring to fig. 2, 3 and 4, two oil scraping plates 201 are provided, and the two oil scraping plates 201 are respectively located at both sides of the line connecting the center lines of the two sprockets 20221.

Referring to fig. 2 and 3, a partition plate 7 is further provided in the separator body 1, the partition plate 7 is provided on the center line of the two sprockets 20221, and the lower end of the partition plate 7 is located below the liquid surface in the separator body 1.

The oil sump 105 is provided with a receiving plate 8 extending toward the liquid surface in the direction of the oil-water separation chamber 103, and the lower edge of the partition plate 7 is located at the middle lower portion of the receiving plate 8.

Referring to fig. 4, two driving motors 2021 are provided, the two driving motors 2021 respectively drive the two sprockets 20221 to rotate, the two driving motors 2021 intermittently operate, and the driving directions of the two driving motors 2021 are opposite, so that the purpose of driving the oil scraper 201 back and forth is achieved.

Referring to fig. 2, 3 and 4, two sides of the connecting rod 2011 are further connected with a dustproof shielding plate 9, the dustproof shielding plate 9 is arranged along the extending direction of the through groove, the width of the dustproof shielding plate 9 is larger than that of the through groove, the dustproof shielding plate 9 is covered above the through groove, so that the through groove is shielded, a containing groove 10 for containing the dustproof shielding plate 9 is formed in the separator body 1, a picking and placing groove 11 communicated with the through groove is formed in the separator body 1, the picking and placing groove 11 is perpendicular to the through groove, the width of the picking and placing groove 11 is larger than the thickness of the oil scraping plate 201, the oil scraping plate 201 is conveniently taken out from the separator body 1, and the trouble that the oil scraping plate 201 is required to be taken out from the through groove after being rotated is reduced; the upper cover of the taking and placing groove 11 is provided with a dust cover 12, and one end of the dust cover 12 can be hinged with the separator body 1, and the other end is a movable end, so that the dust cover 12 can rotate around the hinge shaft to open the taking and placing groove 11 or close the taking and placing groove 11.

Referring to fig. 4 and 5, the dust shield 9 is detachably connected to the link 2011, and in this embodiment, the dust shield 9 is connected to the link 2011 by a screw 13.

Referring to fig. 4 and 6, the bottom of the accommodating cavity is provided with dust collecting grooves 14, the dust collecting grooves 14 are provided in plurality, the plurality of dust collecting grooves 14 are arranged along the moving direction of the dust removing shielding plate 9 and are distributed on two sides of the dust removing shielding plate 9, a dust removing scraping plate 15 is further arranged in the accommodating cavity, the dust removing scraping plate 15 is provided with dust removing grooves (not marked in the drawing) for the dust removing shielding plate 9 to pass through, the dust removing grooves are in contact with the upper surface and two side surfaces of the dust removing shielding plate 9, the dust removing shielding plate 9 passes through the dust removing grooves, and the dust removing scraping plate 15 scrapes off the dust removing shielding plate, and dust on the dust removing shielding plate is collected in the dust collecting grooves 14.

Referring to fig. 4 and 5, the connecting assembly 6 includes a fixed block 601, a movable block 602, and a connecting piece 603, where the fixed block 601 is fixed to the chain 20222, the movable block 602 is detachably connected to the fixed block 601 through the connecting piece 603, and clamping grooves (not labeled in the drawing) attached to the outer walls of the connecting rods 2011 are formed in the fixed block 601 and the movable block 602.

Referring to fig. 4 and 5, one side of the movable block 602 is hinged with the fixed block 601, the other side is provided with a connecting piece 6021, the connecting piece 6021 is abutted with the top of the movable block 602, the connecting piece 603 is a screw, and the connecting piece 603 passes through the connecting piece 6021 to be fixed with the fixed block 601; an anti-slip rubber pad (not shown in the figure) can be further arranged in the clamping groove, and anti-slip lines (not shown in the figure) are arranged on the anti-slip rubber pad and used for enhancing the connection strength of the connecting assembly 6 and the connecting rod 2011.

Referring to fig. 4 and 5, the top of the link 2011 is provided with an abutment 20111, and the abutment 20111 contacts the top of the movable block 602 to limit the downward movement of the link 2011, and the abutment 20111 may be integrally formed with the link 2011 or fixedly connected to the link 2011 by conventional means such as welding or riveting.

The working process and principle of the embodiment of the utility model are as follows:

when the oil-water separator works normally, solid-liquid mixed sewage enters the solid-liquid separation chamber 101 from the water inlet of the separator body 1, solid impurities are filtered through the solid-liquid separation chamber 101 by the filter screen 4, the filtered liquid is an oil-water mixture, the liquid continuously enters the bubble generation chamber 102, then the bubble generator 5 works to generate bubbles, so that oil in the oil-water mixed liquid is brought to the upper layer of the liquid, then one driving motor 2021 works, so that the chain wheel 20221 is driven to move, the two oil scraping plates 201 on the chain belt are driven to move in opposite directions, the two oil scraping plates 201 scrape oil to the oil collecting grooves 105 on two sides respectively, and the oil on the upper layer of the liquid is collected in the oil collecting grooves 105, so that oil-water separation is realized.

When maintenance is required on the drive assembly 202, the cover plate 16 on the accommodating cavity is opened, and the drive assembly 202 in the accommodating cavity is directly maintained.

When the oil scraper 201 in the separator body 1 needs to be maintained, the cover plate 16 on the accommodating chamber is opened, and when the connecting rod 2011 and the chain 20222 on one side are detached, firstly, the dust-proof shields 9 connected to the two sides of the connecting rod 2011 are detached, the dust-proof shields 9 are accommodated in the accommodating groove 10, then the connecting piece 603 is detached, then the movable block 602 is rotated, the connecting rod 2011 and the chain 20222 are separated, then the connecting rod 2011 is moved to the intersection of the through groove and the taking and placing groove 11, the oil scraper 201 is taken out from the taking and placing groove 11, or the connecting rod 2011 is rotated, and the oil scraper 201 is taken out from the through groove, so that the oil scraper 201 is maintained.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not constitute any limitation on the utility model.

Claims

1. The oil-water separator comprises a separator body and an oil scraping device, wherein the oil scraping device comprises an oil scraping plate and a driving assembly for driving the oil scraping plate to reciprocate, and is characterized in that the driving assembly is arranged outside the separator body, a containing cavity for containing the driving assembly is formed in the top of the separator body, a cover plate for covering the containing cavity is further arranged on the separator body, the driving assembly comprises a driving motor and a chain transmission assembly, the chain transmission assembly comprises two chain wheels and a chain meshed with the two chain wheels, the two chain wheel axes are vertically arranged, a connecting rod is connected to the oil scraping plate, a connecting assembly connected with the upper end of the connecting rod is arranged on the chain, a through groove communicated with an inner cavity of the separator body is formed in the bottom of the containing cavity, the connecting rod penetrates through the through groove and is connected with the oil scraping plate, and the width of the through groove is larger than the thickness of the oil scraping plate;

the number of the oil scraping plates is two, and the two oil scraping plates are respectively positioned at two sides of the connecting line of the central lines of the two chain wheels;

the oil scraping device is arranged in the oil-water separation chamber, two oil collecting grooves are arranged in the oil-water separation chamber, one oil collecting groove is arranged close to the solid-liquid separation chamber, and the other oil collecting groove is arranged close to the drainage chamber;

the connecting rod is also connected with a dustproof shielding plate, the dustproof shielding plate is positioned above the through groove, the separator body is provided with a containing groove for containing the dustproof shielding plate, and the dustproof shielding plate is detachably connected with the connecting rod;

dust collecting grooves are formed in the separator body and located on two sides of the dustproof shielding plate, a dust removing scraping plate is arranged on the oil-water separator, a dust removing groove for the dustproof shielding plate to pass through is formed in the dust removing scraping plate, and the dust removing groove is in contact with the upper surface and two side surfaces of the dustproof shielding plate;

the connecting assembly comprises a fixed block, a movable block and a connecting piece, wherein the fixed block is fixed with the chain, the movable block is detachably connected with the fixed block through the connecting piece, and clamping grooves attached to the outer wall of the connecting rod are formed in the fixed block and the movable block.

2. An oil-water separator as claimed in claim 1, wherein a separator is further provided in the separator body, the separator is provided on a center line of the two sprockets, and a lower end of the separator is located below a liquid surface in the separator body.

3. An oil-water separator according to claim 1, wherein two driving motors are provided, the two driving motors respectively drive the two chain wheels to rotate, and the driving directions of the two driving motors are opposite.

4. An oil-water separator as claimed in claim 1, wherein the dust shield is screwed to the connecting rod.

5. An oil-water separator according to claim 1, wherein one side of the movable block is hinged to the fixed block.