Oil-water separator

Abstract

The utility model provides an oil-water separator and belongs to the technical field of processing equipment. The problem that an existing oil-water separator is inconvenient to use is solved. The oil-water separator comprises a main box body and a pump body, the upper end of the main box body is communicated with the upper end of the pump body, the lower end of the pump body is connected with a liquid inlet pipe, the liquid inlet end of the liquid inlet pipe is connected with a floating ball, the pump body is provided with a stepped-hole-shaped overflowing hole formed in the vertical direction, and the hole wall face of the overflowing hole is provided with two steps with the hole diameters becoming larger from bottom to top. Two balls capable of moving up and down are installed in the overflowing hole, the two balls abut against the two steps respectively to block the overflowing hole, a corrugated pipe communicated with the overflowing hole is fixed to the position, between the two steps, of the pump body, the end, opposite to the overflowing hole, of the corrugated pipe is closed, and a motor is further fixedly connected to the main box body; the motor is connected with the corrugated pipe and can drive the corrugated pipe to stretch out and draw back. The oil-water separator is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to processing equipment technical field relates to an oil water separator. BACKGROUND

[0002] Oil water separator is very common in industrial production, and mixed liquid with oil is often produced in industrial production process, such as cutting fluid, coolant and the like, which can be recycled after filtering and removing oil, avoiding waste. There are three types of industrial oil water separators: 1. using aeration method to decompose oil; 2. using density difference to separate oil; 3. using the principle of oil scraping to separate oil and water.

[0003] Among the oil water separators using density difference to separate oil, the oil seal of oil is generally smaller than that of water, and the oil on the water surface is separated by being sucked away, such as a kind of pneumatic pump oil water separation machine disclosed in Chinese patent document [announcement: CN220467657U], which comprises a liquid collecting barrel, a water pump is arranged in the liquid collecting barrel, one end of the water pump located in the liquid collecting barrel is connected with a floating ball, the end of the water pump away from the floating ball is connected with a pneumatic pump, the water pump is connected with the water inlet end of the pneumatic pump, one side of the liquid collecting barrel is fixedly connected with an oil water separation tank, the oil water separation tank is provided with a water storage tank, an oil collecting tank and a water collecting tank, the water separated by the oil water separation tank enters the water collecting tank, and the oil separated by the oil water separation tank enters the oil collecting tank, the water outlet end of the pneumatic pump extends into the water storage tank through the water pipe, so that the liquid pumped by the pneumatic pump enters the water storage tank, the bottom between the water storage tank and the water collecting tank is provided with a water outlet, one side of the water collecting tank is provided with a water discharge assembly for discharging the separated water, and one side of the oil collecting tank is provided with an oil discharge assembly for discharging the separated oil.

[0004] When working, the pneumatic pump draws the liquid on the upper layer of the liquid collecting barrel into the water storage tank through the water pump, and the water on the lower layer of the water storage tank enters the water collecting tank and is discharged to the outside through the water discharge assembly; the oil on the upper layer of the water storage tank enters the oil collecting tank and is discharged to the outside through the oil discharge assembly. Since the pneumatic pump is used to pump the liquid, a compressor needs to be added to provide power for the pneumatic pump. In this way, the pneumatic pump oil water separation machine needs to additionally increase a compressor when used, which not only increases the cost of equipment, but also needs to provide a place for the compressor before use and connect the compressor, and then connect the power supply to start using, which is inconvenient to use. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in the prior art, and provides an oil water separator, which solves the technical problem of inconvenient use of the existing oil water separator.

[0006] The utility model can be realized by the following technical schemes:

[0007] An oil-water separator comprises a main tank and a pump body, the upper end of the main tank and the upper end of the pump body are communicated, the lower end of the pump body is connected with a liquid inlet pipe, the liquid inlet end of the liquid inlet pipe is connected with a float, characterized in that the pump body is provided with a flow hole in the vertical direction, the flow hole is a stepped hole, the hole wall surface of the flow hole is provided with two steps with the hole diameter increasing from bottom to top, two balls capable of moving up and down are installed in the flow hole, and the two balls are respectively abutted on the two steps to block the flow hole, a corrugated pipe communicated with the flow hole is fixed between the two steps on the pump body, the end of the corrugated pipe away from the flow hole is closed, and a motor is further fixedly connected on the main tank, the motor is connected with the corrugated pipe and can drive the corrugated pipe to stretch and contract.

[0008] In operation, the liquid inlet end of the liquid inlet pipe is put into the oil-containing pool, under the action of the buoyancy of the float, the port of the liquid inlet end of the liquid inlet pipe is located slightly below the oil layer, the oil in the oil layer and the mixed liquid near the oil layer flow into the liquid inlet end of the liquid inlet pipe under the action of gravity, and then the motor works and drives the corrugated pipe to stretch and contract. At the beginning of operation, the corrugated pipe is in a natural stretching and contracting state without external force, i.e. without the motor working, at this time, the air pressure in the corrugated pipe is equal to the atmospheric pressure, and the two balls are respectively abutted on the two steps to block the flow hole under the action of gravity; then when the corrugated pipe is stretched, the volume of the corrugated pipe increases, the air pressure in the corrugated pipe decreases, i.e. the air pressure in the region between the two steps of the flow hole decreases, under the action of the external air pressure, the ball on the upper side is pressed downward to tightly abut on the step to maintain the blocking effect, and the ball on the lower side is pushed upward to be separated, the mixed liquid enters between the two steps through the step on the lower side; then the corrugated pipe is compressed, the volume of the corrugated pipe decreases, the pressure in the corrugated pipe increases, i.e. the pressure in the region between the two steps of the flow hole increases, the ball on the lower side is pressed downward to tightly abut on the step, and the ball on the upper side is pushed upward to be separated, the mixed liquid flows upward into the main tank; then the corrugated pipe is stretched again, the volume of the corrugated pipe increases, the pressure in the corrugated pipe decreases to form a negative pressure effect, so that the ball on the upper side is pressed downward to tightly abut on the step, and the ball on the lower side moves upward, the mixed liquid continues to enter between the two steps through the step on the lower side. In this way, with the motor driving the corrugated pipe to stretch and contract reciprocally, the oil in the oil layer and the mixed liquid near the oil layer are continuously pumped into the main tank to realize preliminary oil-water separation. In use, only the motor needs to be connected with power supply, without the need of connecting an air compressor or other devices, so that the oil-water separator is convenient to use. Therefore, the oil-water separator can pump the oil in the oil layer and the mixed liquid near the oil layer into the main tank by using the negative pressure effect and the pressure increasing effect generated by the stretching and contracting of the corrugated pipe, and only the motor needs to be connected with power supply, without the need of connecting an air compressor or other devices, so that the oil-water separator is convenient to use.

[0009] In the oil-water separator, the two bellows are arranged in parallel and vertically, which can increase the volume change of the bellows during expansion and contraction, thereby providing greater driving force to drive the oil into the main tank and improving the working efficiency.

[0010] In the oil-water separator, the two bellows are arranged in parallel and vertically, which can increase the volume change of the bellows during expansion and contraction, thereby providing greater driving force to drive the oil into the main tank and improving the working efficiency.

[0011] The two bellows are connected by the connecting rod, which ensures that the two bellows expand and contract synchronously, thereby providing a driving force to drive the oil into the main tank and improving the working efficiency.

[0012] In the oil-water separator, the main tank is fixed with a U-shaped guide seat, which includes two guide plates arranged in parallel and vertically and an intermediate part connected between the two guide plates. The two guide plates each have a strip-shaped guide slot arranged in the direction of expansion and contraction of the bellows. The two ends of the connecting rod are respectively inserted into the guide slots of the two guide plates.

[0013] The guide seat has a guiding and positioning effect on the expansion and contraction of the bellows, which ensures that the two bellows expand and contract in the same direction without deviation, thereby providing a stable driving force to make the oil-water separator work stably and conveniently.

[0014] In the oil-water separator, the motor shaft is fixed with an eccentric wheel, and a connecting rod is hinged between the eccentric wheel and the connecting rod.

[0015] When the motor rotates, the eccentric wheel is driven to rotate, the connecting rod is driven to swing, and the connecting rod drives the connecting rod and the connecting pipe to move, thereby driving the bellows to reciprocatingly expand and contract to drive the oil into the main tank.

[0016] In the oil-water separator, a spherical hinge joint is provided between the connecting rod and the eccentric wheel and between the connecting rod and the connecting rod. The spherical hinge joint has a universal function, which can reduce the installation precision requirement between the motor and the bellows, make the oil-water separator easy to assemble, and make the power transmission between the motor and the bellows smooth.

[0017] In the oil-water separator, the main tank is fixed with a cover, the motor and the bellows are located in the cover, and the pump body is fixed on the outer side of the cover. This facilitates the handling of the whole oil-water separator and facilitates use. In addition, the cover has a protective effect on the motor and the bellows, avoiding the influence of the external environment on the working of the motor and the bellows.

[0018] In the oil-water separator, the water collecting tank and the oil collecting tank are fixed on the upper part of the main tank body, a water collecting pipe is arranged and fixed on the bottom of the water collecting tank, the upper end of the water collecting pipe is located in the middle part of the water collecting tank, the lower end of the water collecting pipe is located in the lower part of the main tank body, the side wall of the water collecting tank is provided with a water outlet pipe extending out of the main tank body, the side wall of the oil collecting tank is provided with a gap, the lower opening of the gap is lower than the upper surface of the water collecting tank and higher than the upper end surface of the water collecting pipe, and the side wall of the oil collecting tank is provided with an oil outlet pipe extending out of the main tank body.

[0019] The motor works to gradually draw the oil liquid layer in the pool into the main tank body, and a part of water is mixed into the liquid, the water in the lower layer enters the water collecting tank through the water collecting pipe after the liquid is drawn into the main tank body, and finally flows out from the water outlet pipe, the oil in the upper layer enters the oil collecting tank through the gap, and finally flows out from the oil outlet pipe, so that the oil-water separation is further realized.

[0020] Compared with the prior art, the oil-water separator has the following advantages:

[0021] The motor works to drive the bellows to stretch and retract, so that the liquid is drawn into the main tank body, in the use process, only the power supply needs to be connected to electrify the motor, without the need of opening the tank to connect the air compressor or other devices, so that the oil-water separator is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the oil-water separator in embodiment one.

[0023] Figure 2 is a schematic view of the pump body, the motor and the transmission part therebetween in the oil-water separator in embodiment one.

[0024] Figure 3 is a schematic view of the oil-water separator in another view in embodiment one.

[0025] Figure 4 is a schematic view of the oil-water separator in embodiment one.

[0026] In the drawings, 1 is the main tank body, 2 is the pump body, 2a is the flow hole, 2b is the step, 3 is the connecting pipe, 4 is the liquid inlet pipe, 5 is the floating ball, 6 is the ball body, 7 is the bellows, 8 is the motor, 9 is the connecting pipe, 10 is the connecting rod, 11 is the guide seat, 11a is the guide plate, 11a1 is the guide groove, 11b is the middle part, 12 is the eccentric wheel, 13 is the connecting rod, 14 is the ball joint, 15 is the cover, 16 is the water collecting tank, 17 is the oil collecting tank, 17a is the gap, 18 is the water collecting pipe, 19 is the water outlet pipe, 20 is the oil outlet pipe, and 21 is the drain pipe. DETAILED DESCRIPTION

[0027] The utility model discloses the specific embodiments of the utility model are as follows and further describe the technical scheme of the utility model with reference to the drawings, but the utility model is not limited to these embodiments.

[0028] Embodiment one

[0029] As Figure 1 The oil-water separator comprises a main tank body 1 and a pump body 2, a connecting pipe 3 is fixedly connected between the upper end of the main tank body 1 and the upper end of the pump body 2, a liquid inlet pipe 4 is connected to the lower end of the pump body 2, and a float ball 5 is connected to the liquid inlet end of the liquid inlet pipe 4.

[0030] As shown in 1 and Figure 2 The pump body 2 is provided with a flow hole 2a in the form of a stepped hole and arranged in the vertical direction, and the hole wall surface of the flow hole 2a is provided with two steps 2b that increase in diameter from bottom to top. The flow hole 2a comprises a first section, a second section and a third section that are separated from top to bottom by the two steps 2b, and the flow hole 2a further comprises a fourth section below the third section. The lower end of the connecting pipe 3 is fixed to the upper end of the flow hole 2a, and the lower end of the connecting pipe 3 is provided with a first pipe joint that is inserted into the first section and threadedly connected. The liquid outlet end of the liquid inlet pipe 4 is fixed to the lower end of the flow hole 2a, and the liquid outlet end of the liquid inlet pipe 4 is provided with a second pipe joint that is inserted into the fourth section and threadedly connected. A sealing ring is sleeved on each of the first pipe joint and the second pipe joint. Two ball bodies 6 are installed in the flow hole 2a and can move up and down, and the two ball bodies 6 are respectively abutted on the two steps 2b to block the flow hole 2a. The two ball bodies 6 are respectively a first ball body in the first section and a second ball body in the second section. The first ball body can move between the first pipe joint and the upper step 2b, and the second ball body can move between the two steps 2b. The diameter of the first ball body is smaller than the diameter of the first pipe joint, and the diameter of the first ball body is smaller than the diameter of the first section and larger than the diameter of the second section; the diameter of the second ball body is smaller than the diameter of the second section and larger than the diameter of the third section. A first chamfer is arranged between the surface of the upper step 2b and the hole wall surface of the second section, and a second chamfer is arranged between the surface of the lower step 2b and the hole wall surface of the third section.

[0031] As Figure 1 and Figure 2As shown, the pump body 2 is fixed with a bellows 7 in communication with the flow hole 2a between the two steps 2b, and the end of the bellows 7 away from the flow hole 2a is closed. The pump body 2 is provided with a side hole in communication with the flow hole 2a between the two steps 2b, and the open end of the bellows 7 is opposite to and in communication with the side hole. The open end of the bellows 7 is provided with a flange plate, which is abutted on the side surface of the pump body 2 and fixedly connected by screws, and a sealing gasket is arranged between the flange plate and the pump body 2. The main box body 1 is also fixedly connected with a motor 8, which is connected with the bellows 7 and can drive the bellows 7 to extend and retract. The bellows 7 are two and arranged side by side in upper and lower positions, the upper bellows 7 is close to the upper step 2b, and the lower bellows 7 is close to the lower step 2b. The end of the bellows 7 away from the pump body 2 is fixed with a connecting pipe 9, and the two connecting pipes 9 are fixed with a connecting rod 10. The main box body 1 is fixed with a U-shaped guide seat 11, which includes two guide plates 11a arranged side by side in upper and lower positions and an intermediate part 11b connected between the two guide plates 11a, and the two guide plates 11a are both provided with a strip-shaped guide groove 11a1 arranged in the extension direction of the bellows 7, and the two ends of the connecting rod 10 are respectively inserted into the guide grooves 11a1 of the two guide plates 11a. The shaft of the motor 8 is fixed with an eccentric wheel 12, and the eccentric wheel 12 is hinged with a connecting rod 13 between the connecting rod 10, and the connecting rod 13 is provided with a spherical hinge joint 14 between the eccentric wheel 12 and the middle part of the connecting rod 10. The two ends of the connecting rod 13 are inserted into the two spherical hinge joints 14 and form threaded connections, the thread pitches of the two ends of the connecting rod 13 are the same and the rotation directions are opposite, so that rotating the connecting rod 13 can adjust the distance between the two spherical hinge joints 14. The outer side of the main box body 1 is fixedly connected with a cover 15, the motor 8, the bellows 7, the guide seat 11 and the transmission member between the motor 8 and the bellows 7 are all located in the cover 15, and the pump body 2 is fixedly connected on the outer side of the cover 15.

[0032] As shown in Figure 3 and Figure 4 , the bottom of the water collecting tank 16 is provided with a water collecting pipe 18, the upper end of the water collecting pipe 18 is located in the middle of the water collecting tank 16, and the lower end of the water collecting pipe 18 is located in the lower part of the main box body 1. The oil collecting tank 17 is provided with a notch 17a, and the lower opening of the notch 17a is lower than the upper surface of the water collecting tank 16 and higher than the upper end surface of the water collecting pipe 18. The side wall of the water collecting tank 16 is provided with a water outlet pipe 19 extending out of the side wall of the main box body 1, the side wall of the oil collecting tank 17 is provided with an oil outlet pipe 20 extending out of the side wall of the main box body 1, and the bottom end of the main box body 1 is provided with a drain pipe 21, and the drain pipe 21 is provided with a drain valve [not shown]. When separating oil and water, the drain valve is closed, and when cleaning the main box body 1, the drain valve is opened.

[0033] When working, the inlet end of the inlet pipe 4 is put into the pool with oil liquid, under the action of the buoyancy of the floating ball 5, the port of the inlet end of the inlet pipe 4 is located slightly below the oil liquid layer, the oil liquid of the oil liquid layer and the mixed liquid near the oil liquid layer flow into the inlet end of the inlet pipe 4 under the action of gravity, then the motor 8 works and drives the bellows 7 to stretch and contract. At the beginning of work, the bellows 7 is in a natural stretching and contracting state without external force, i.e. the motor 8 does not work, at this time the air pressure in the bellows 7 is equal to the atmospheric pressure, under the action of gravity, the two balls 6 are respectively abutted on the two steps 2b to block the overflow hole 2a; then when the bellows 7 is stretched, the volume of the bellows 7 increases, the air pressure in the bellows 7 decreases, i.e. the air pressure of the second section of the overflow hole 2a decreases, under the action of the external air pressure, the ball 6 located above is pressed tightly downward on the step 2b to keep the blocking effect, the ball 6 located below is pushed open upward, the mixed liquid enters the second section of the overflow hole 2a through the step 2b located below; then the bellows 7 is compressed, the volume of the bellows 7 decreases, the pressure in the bellows 7 increases, i.e. the pressure of the second section of the overflow hole 2a increases, the ball 6 located below is pressed tightly downward on the step 2b, the ball 6 located above is pushed open upward, the mixed liquid flows upward into the main box body 1; then the bellows 7 is stretched again, the volume of the bellows 7 increases, the pressure in the bellows 7 decreases to form a negative pressure effect, so that the ball 6 located above is pressed tightly downward on the step 2b, the ball 6 located below moves upward, the mixed liquid continues to enter the second section of the overflow hole 2a through the step 2b located below. In this way, with the motor 8 driving the bellows 7 to stretch and contract reciprocally, the oil liquid in the oil liquid layer and the mixed liquid near the oil liquid layer are continuously pumped into the main box body 1 to realize preliminary oil-water separation. The mixed liquid entering the main box body 1 increases continuously, the oil liquid is in the upper layer and enters the oil collecting tank 17 through the gap 17a in the oil collecting tank 17, then flows out through the oil outlet pipe 20, the water is below the oil liquid and enters the water collecting tank 16 through the water collecting pipe 18, then flows out through the water outlet pipe 19, further realizing oil-water separation.

[0034] The oil-water separator can pump the oil liquid of the oil liquid layer in the pool and the mixed liquid near the oil liquid layer into the main box body 1 by the negative pressure effect and the pressure increasing effect generated by the stretching and contracting of the bellows 7, then further separates the oil and water by the oil collecting tank 17 and the water collecting tank 16 in the main box body 1, only needs to power on the motor 8 during working, without the need of opening the box to connect an air compressor or other devices, and the oil-water separator is convenient to use.

[0035] Example two

[0036] The difference from example one is that a crank is fixed on the rotating shaft of the motor 8, the crank is hinged with the connecting rod 13; a pipe joint is arranged on the open end of the bellows 7, the pipe joint is inserted and threadedly connected in the side hole, and a sealing ring is sleeved on the pipe joint. Other structures are basically the same as those of example one.

[0037] Example three

[0038] The difference from example one is that the motor 8 is a linear motor, and the sliding seat of the linear motor is fixedly connected with the connecting rod 10. Other structures are basically the same as those of example one.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An oil-water separator, comprising a main housing (1) and a pump body (2), wherein the upper end of the main housing (1) is connected to the upper end of the pump body (2), and the lower end of the pump body (2) is connected to an inlet pipe (4), and a float ball (5) is connected to the inlet end of the inlet pipe (4), characterized in that, The pump body (2) has a stepped flow hole (2a) opened vertically. The flow hole (2a) has two steps (2b) with the diameter increasing from bottom to top on the hole wall. Two spheres (6) that can move up and down are installed in the flow hole (2a). The two spheres (6) abut against the two steps (2b) respectively to block the flow hole (2a). A bellows (7) that communicates with the flow hole (2a) is fixed between the two steps (2b) on the pump body (2). The end of the bellows (7) facing away from the flow hole (2a) is closed. A motor (8) is also fixedly connected to the main housing (1). The motor (8) is connected to the bellows (7) and can drive the bellows (7) to extend and retract.

2. The oil-water separator according to claim 1, characterized in that, There are two corrugated pipes (7) arranged side by side, one above the other.

3. The oil-water separator according to claim 2, characterized in that, The bellows (7) is fixed with a connecting pipe (9) at the end facing away from the pump body (2), and a connecting rod (10) is fixed between the two connecting pipes (9).

4. The oil-water separator according to claim 3, characterized in that, The main housing (1) is fixed with a U-shaped guide seat (11). The guide seat (11) includes two guide plates (11a) arranged side by side and a middle part (11b) connected between the two guide plates (11a). Both guide plates (11a) have strip-shaped guide grooves (11a1) arranged along the extension and retraction direction of the corrugated pipe (7). The two ends of the connecting rod (10) are respectively inserted into the guide grooves (11a1) of the two guide plates (11a).

5. The oil-water separator according to claim 4, characterized in that, An eccentric wheel (12) is fixed on the shaft of the motor (8), and a connecting rod (13) is hinged between the eccentric wheel (12) and the connecting rod (10).

6. The oil-water separator according to claim 5, characterized in that, Ball joints (14) are provided between the connecting rod (13) and the eccentric wheel (12) and between the connecting rod (13) and the connecting rod (10).

7. The oil-water separator according to any one of claims 1-6, characterized in that, A cover (15) is fixedly connected to the outer side of the main housing (1). The motor (8) and the bellows (7) are both located inside the cover (15). The pump body (2) is fixedly connected to the outer side of the cover (15).

8. The oil-water separator according to any one of claims 1-6, characterized in that, Inside the main body (1), a water collection tank (16) and an oil collection tank (17) are fixed at the upper part of the main body (1). A water collection pipe (18) is inserted and fixed at the bottom of the water collection tank (16). The upper end of the water collection pipe (18) is located in the middle of the water collection tank (16), and the lower end of the water collection pipe (18) is located at the lower part of the main body (1). The side wall of the water collection tank (16) has a water outlet pipe (19) extending out of the main body (1). The side wall of the oil collection tank (17) has a notch (17a). The lower edge of the notch (17a) is lower than the upper surface of the water collection tank (16) and higher than the upper end surface of the water collection pipe (18). The side wall of the oil collection tank (17) has an oil outlet pipe (20) extending out of the main body (1).

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