High-viscosity oil filtering device

Abstract

The utility model belongs to the technical field of filtration or the field of synthetic ester purification, and particularly relates to a high-viscosity oil filtering device. In the high-viscosity oil filtering device, a reciprocating pump is selected as a liquid pressurizing device, the reciprocating pump is divided into a plurality of branch pipelines with a piston motion function, and the branch pipelines can jointly or independently carry out piston motion. The pressurization mode of the high-viscosity oil filtering device is changed from a gas pressurization mode to a liquid pressurization mode, the liquid compression coefficient is small, the pressure applied by the reciprocating pump can immediately act on a crude product, and the pressure intensity can be increased greatly in a short time; meanwhile, the pressure intensity of the filtering device can be rapidly reduced when leakage occurs, synthetic ester products cannot be splashed massively, and the safety coefficient is increased; besides, on the premise that the applied external force is not changed, the stressed area can be reduced to provide higher pressure by selecting fewer first pistons, so that the filtering speed of crude products such as malate or benzoate plasticizer is further increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the filtration technical field or high viscosity oil sample purification field, concretely relates to a high viscosity oil filter device. BACKGROUND

[0002] Face the high viscosity oil sample, such as paint, honey etc., also such as in the production of ester malate or benzoate plasticizer etc. crude product needs to pass through the process of filtering. But because the viscosity of synthetic ester paint sample is too large, the time of suction filtration is too long, influences the experiment progress, its reason is that the limit of vacuum pump is-0.1MPa. And the price of high pressure air pump is higher, will lead to its production cost is too high. And the high pressure of air pump is generated by compressed air, and the compression coefficient of gas is large, in order to reach high air pressure, more volume of gas is compressed. When filtering is completed, the crude product on the filter screen is too little to form a closed system, and a large amount of synthetic ester product splashes in the moment of high-pressure gas leakage, which forms an experimental accident. And the plate pressure filtration method has the problems of large floor area, high energy consumption and high maintenance cost.

[0003] Therefore, it is particularly important to provide a high viscosity oil filter device that can provide high pressure filtration at low cost, improve safety factor and prevent a large amount of synthetic ester product from splashing in the moment of leakage. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a high viscosity oil filter device. The filter device can provide high pressure filtration at low cost, improve safety factor and prevent a large amount of liquid or gas from splashing in the moment of leakage.

[0005] The utility model discloses the following concept: the pressurizing mode of the filter device is changed from gas pressurizing to liquid pressurizing. The liquid compression coefficient is small, and the pressure applied by the reciprocating pump can immediately act on the crude product, so that the pressure can be increased in a short time. At the same time, when the filter device leaks, the pressure will decrease rapidly, and the synthetic ester product will not splash in large quantities, so the safety factor is improved.

[0006] The utility model discloses a high viscosity oil filter device.

[0007] Specifically, a high viscosity oil filter device comprises a shell, a cavity arranged in the shell, a filter mechanism arranged at the bottom of the shell and connected with the cavity, a sample adding port arranged on the outer wall of the shell and connected with the cavity, and a reciprocating pump arranged at the top of the shell.

[0008] The sample adding port comprises a first one-way valve with a one-way flow direction to the cavity.

[0009] The reciprocating pump comprises a main pipe and more than two branch pipes, one side of the main pipe is connected with the cavity, the other side of the main pipe is connected with each branch pipe, and each branch pipe faces the same direction; each branch pipe further comprises a first piston capable of moving up and down on the inner wall of the branch pipe in a gas-tight manner, a connecting rod connected with the first piston at one end and located outside the branch pipe at the other end, and a buckle on the outer end of the connecting rod of each branch pipe, and each buckle can be buckled and fixed or unbuckled with each other.

[0010] The sample adding port is used for adding sample to the cavity.

[0011] The filtering mechanism is used for filtering the sample in the cavity.

[0012] The reciprocating pump is used for pressurizing the sample in the cavity.

[0013] Compared with the prior art, the high-viscosity oil filtering device provided by the first aspect has the following beneficial effects: the pressurization mode of the filtering device is changed from gas pressurization to liquid pressurization, the liquid compression coefficient is small, the pressure applied by the reciprocating pump can immediately act on the crude product, and a relatively large pressure can be increased in a short time; at the same time, when the filtering device leaks, the pressure will decrease rapidly, and the synthetic ester product will not splash in large quantities, thereby improving the safety factor; in addition, for a synthetic ester sample with relatively large viscosity, a smaller first piston can be selected to provide a larger pressure under the premise that the external force applied remains unchanged, and the pressure at the filter screen is thus increased according to Pascal's law.

[0014] Preferably, the high-viscosity oil filtering device further comprises an exhaust valve arranged on the top of the shell and connected with the cavity. The exhaust valve is used for exhausting the cavity.

[0015] Preferably, the number of branch pipes is 2-20; further preferably, the number of branch pipes is 2-10; and more preferably, the number of branch pipes is 2-5.

[0016] Preferably, the ratio of the sum of the cross sections of each first piston to the filtering area of the filtering mechanism is less than or equal to 0.5; further preferably, the ratio of the sum of the cross sections of each first piston to the filtering area of the filtering mechanism is less than or equal to 0.3; and further preferably, the ratio of the sum of the cross sections of each first piston to the filtering area of the filtering mechanism is less than or equal to 0.1. When the same external force is applied to the reciprocating pump, the smaller the ratio of the sum of the cross sections of each first piston to the filtering area of the filtering mechanism, the greater the pressure on the filter surface of the filtering mechanism.

[0017] Preferably, the filtration mechanism further includes at least one of a filter screen, a sand core filter plate, a sieve plate, filter paper, a ceramic filter plate, and a cotton filter plate.

[0018] Preferably, the filtration mechanism includes two or more layers of filter screens or sieve plates stacked together, and each filter screen or sieve plate is capable of rotation and relative displacement. The filter screens or sieve plates capable of mutual displacement can change the filtration accuracy by adjusting the degree of misalignment of the filter mesh or sieve holes.

[0019] Preferably, the cavity of the high-viscosity oil filtration device further includes a second piston capable of airtight up-and-down piston movement within the cavity. The second piston divides the cavity into an upper hydraulic chamber and a lower filter chamber. Since the cross-sectional area of ​​the first piston in the reciprocating pump is much smaller than the filter area of ​​the filtration mechanism, the piston often moves at a relatively high speed to ensure the filtration flow rate, resulting in high heat generation from friction. When dealing with samples with poor stability, to prevent sample deterioration due to frictional heat generation in the reciprocating pump or other reasons, using a second piston to divide the cavity into a hydraulic chamber and a filter chamber effectively separates the sample from the reciprocating pump, improving the sample's stability during the filtration process.

[0020] The hydraulic chamber is used to fill hydraulic fluid; more preferably, the hydraulic chamber further includes hydraulic fluid filling the hydraulic chamber.

[0021] Preferably, the hydraulic fluid includes at least one of water-based hydraulic fluid, hydrocarbon oil-based hydraulic fluid, alcohol-based hydraulic fluid, acid-based hydraulic fluid, and ester-based hydraulic fluid.

[0022] Preferably, the sample inlet is connected to the filter chamber, and the connection point is outside the movable range of the second piston.

[0023] Preferably, one side of the main pipe is connected to the hydraulic chamber, and the other side of the main pipe is connected to each of the branch pipes.

[0024] Preferably, the side of the main pipeline connected to the cavity further includes a second one-way valve that flows unidirectionally to the cavity, and the side of the main pipeline connected to the branch pipeline further includes an inlet, which in turn includes a third one-way valve that flows unidirectionally to the main pipeline. More preferably, the side of the main pipeline connected to the hydraulic chamber further includes a second one-way valve that flows unidirectionally to the hydraulic chamber, and the side of the main pipeline connected to the branch pipeline further includes an inlet, which in turn includes a third one-way valve that flows unidirectionally to the main pipeline. By adding an inlet and a one-way valve to the main pipeline in the reciprocating pump, the range of motion of the second piston can be increased by externally connecting a accumulator tank.

[0025] Preferably, the high-viscosity oil filtration device further includes a storage tank, the bottom of which is connected to the inlet.

[0026] Preferably, the reservoir further includes a return pipe connected to the hydraulic chamber, and the return pipe also includes a valve; more preferably, the point where the return pipe connects to the hydraulic chamber is outside the movable range of the second piston. By providing a return pipe, when samples are continuously added and the valve is opened, the hydraulic fluid in the hydraulic chamber can flow back to the reservoir, causing the second piston to rise and thus forming a circulation.

[0027] Preferably, the liquid inlet further includes a pressure pump with the pressure direction facing the cavity.

[0028] Preferably, the bottom of the high-viscosity oil filtration device further includes wheels for moving the filtration device.

[0029] Preferably, the bottom of the housing also includes a liquid collection port with a tapered design, located below the filtration mechanism. With the liquid collection port installed, packaging bags can be directly attached, or samples can be connected to pipelines in other reaction systems.

[0030] Preferably, the housing can be configured as a detachable, modular design. This detachable design facilitates the disassembly and cleaning of the high-viscosity oil filtration device.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] (1) The pressurization method of the filter device is changed from gas pressurization to liquid pressurization. Liquid has a small compressibility coefficient, and the pressure applied by the reciprocating pump can be applied to the crude product immediately, which can increase the pressure in a short time. At the same time, the pressure of the filter device will drop rapidly when leakage occurs, and the synthetic ester product will not splash in large quantities, thus improving the safety factor. In addition, for synthetic ester samples with high viscosity, under the premise that the applied external force remains unchanged, fewer first pistons can be used to reduce the force-bearing area and provide greater pressure. According to Pascal's law, the pressure at the filter screen will increase as a result.

[0033] (2) Since the cross-sectional area of ​​the first piston in the reciprocating pump is much smaller than the filtration area of ​​the filtration mechanism, in order to ensure the filtration flow rate, the piston often moves at a high speed and often generates a high amount of heat due to friction. When facing a sample with poor stability, in order to prevent the sample from deteriorating due to frictional heat in the reciprocating pump or other reasons, using the second piston to divide the cavity into a hydraulic cavity and a filtration cavity can effectively separate the sample from the reciprocating pump and improve the stability of the sample during the filtration process.

[0034] (3) By setting a liquid inlet in the reciprocating pump and setting an additional liquid storage tank, the second piston can have a larger range of motion; and the second piston can form a motion cycle after adding a return pipe; at the same time, the detachable design is conducive to the disassembly and cleaning of the high viscosity oil filter device. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a high-viscosity oil filtration device according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of another high-viscosity oil filtration device according to an embodiment;

[0037] Figure label:

[0038] 100 housing, 110 cavity, 111 hydraulic chamber, 112 filter chamber, 120 filter mechanism, 130 sample inlet, 131 first check valve, 140 reciprocating pump, 141 main pipeline, 142 branch pipeline, 143 first piston, 144 connecting rod, 145 latch, 146 second check valve, 147 liquid inlet, 148 third check valve, 150 second piston, 160 liquid storage tank, 161 return pipe, 162 valve. Detailed Implementation

[0039] To enable those skilled in the art to more clearly understand the technical solution described in this utility model, the following embodiments are provided for illustration. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It should be noted that the following embodiments do not constitute a limitation on the scope of protection claimed by this utility model.

[0040] Reference Figure 1 , Figure 1 This is a schematic diagram of a high viscosity oil filtration device according to an embodiment of the present invention, including a housing 100, a cavity 110 disposed within the housing 100, a filtration mechanism 120 disposed at the bottom of the housing 100 and connected to the cavity 110, a sample inlet 130 disposed on the outer wall of the housing 100 and connected to the cavity 110, and a reciprocating pump 140 disposed at the top of the housing 100.

[0041] The sample inlet 130 includes a first one-way valve 131 that flows unidirectionally into the cavity 110;

[0042] The reciprocating pump 140 includes a main pipe 141 and two or more branch pipes 142. One side of the main pipe 141 is connected to the cavity 110, and the other side of the main pipe 141 is connected to each branch pipe 142. Each branch pipe 142 has the same orientation. Each branch pipe 142 also includes a first piston 143 that can move up and down the inner wall of the branch pipe 142 in an airtight manner, and a connecting rod 144 with one end connected to the first piston 143 and the other end located outside the branch pipe 142. The connecting rod 144 also includes a latch 145 on the end located outside the branch pipe 142. Each latch 145 can be locked and unlocked by each other.

[0043] The sample dispensing port 130 is used to dispense samples into the cavity 110;

[0044] The filtration mechanism 120 is used to filter the sample inside the cavity 110;

[0045] The reciprocating pump 140 is used to pressurize the sample inside the cavity 110.

[0046] Compared to existing technologies, the advantages of the high-viscosity oil filtration device provided in this first aspect are as follows: the pressurization method of the filtration device is changed from gas pressurization to liquid pressurization. Liquid has a small compressibility coefficient, and the pressure applied by the reciprocating pump can immediately act on the crude product, which can increase the pressure in a short time. At the same time, the pressure of the filtration device will drop rapidly when leakage occurs, and the synthetic ester product will not splash in large quantities, thus improving the safety factor. In addition, for synthetic ester samples with high viscosity, under the premise of keeping the applied external force unchanged, fewer first pistons can be used to reduce the force-bearing area and provide greater pressure. According to Pascal's law, the pressure at the filter screen will therefore increase.

[0047] According to some embodiments of the present invention, the high-viscosity oil filtration device further includes an exhaust valve disposed at the top of the housing 100 and connected to the cavity 110. The exhaust valve is used to exhaust air from the cavity 110.

[0048] According to some embodiments of the present invention, the number of branch pipes 142 is 2-20; more preferably, the number of branch pipes 142 is 2-10; and even more preferably, the number of branch pipes 142 is 2-5.

[0049] According to some embodiments of this utility model, the ratio of the sum of the cross-sections of each first piston 143 to the filtration area of ​​the filter mechanism 120 is less than or equal to 0.5; more preferably, the ratio of the sum of the cross-sections of each first piston 143 to the filtration area of ​​the filter mechanism 120 is less than or equal to 0.3; and even more preferably, the ratio of the sum of the cross-sections of each first piston 143 to the filtration area of ​​the filter mechanism 120 is less than or equal to 0.1. When the same external force is applied to the reciprocating pump, the smaller the ratio of the sum of the cross-sections of each first piston to the filtration area of ​​the filter mechanism, the greater the pressure on the filter surface of the filter mechanism.

[0050] According to some embodiments of the present invention, the filtration mechanism 120 further includes at least one of a filter screen, a sand core filter plate, a sieve plate, filter paper, a ceramic filter plate, and a cotton filter plate.

[0051] According to some embodiments of this utility model, the filtration mechanism 120 includes two or more layers of filter screens or sieves stacked together, and each filter screen or sieve plate is capable of rotation and relative displacement. The filter screens or sieves capable of mutual displacement can change the filtration accuracy by adjusting the degree of misalignment of the filter mesh or sieve holes.

[0052] According to some embodiments of this utility model, the cavity 110 of the high-viscosity oil filtration device further includes a second piston 150 capable of airtight up-and-down piston movement within the cavity 110. The second piston 150 divides the cavity 110 into an upper hydraulic cavity 111 and a lower filter cavity 112. Since the cross-sectional area of ​​the first piston in the reciprocating pump is much smaller than the filter area of ​​the filtration mechanism, the piston often moves at a relatively high speed to ensure the filtration flow rate, often resulting in high heat generated by friction. When dealing with samples with poor stability, in order to prevent sample deterioration due to frictional heat generation in the reciprocating pump or other reasons, using the second piston to divide the cavity into a hydraulic cavity and a filter cavity can effectively separate the sample from the reciprocating pump, improving the stability of the sample during the filtration process.

[0053] The hydraulic chamber 111 is used to fill hydraulic fluid; more preferably, the hydraulic chamber 111 also includes hydraulic fluid filling the hydraulic chamber 111.

[0054] According to some embodiments of this utility model, the hydraulic fluid includes at least one of water-based hydraulic fluid, hydrocarbon oil-based hydraulic fluid, alcohol-based hydraulic fluid, acid-based hydraulic fluid, and ester-based hydraulic fluid.

[0055] According to some embodiments of the present invention, the sample inlet 130 is connected to the filter chamber 112, and the connection point is outside the movable range of the second piston 150.

[0056] According to some embodiments of the present invention, one side of the main pipe 141 is connected to the hydraulic chamber 111, and the other side of the main pipe 141 is connected to each branch pipe 142.

[0057] According to some embodiments of this utility model, the side of the main pipe 141 connected to the cavity 110 further includes a second one-way valve 146 that flows unidirectionally to the cavity 110, and the side of the main pipe 141 connected to the branch pipe 142 further includes an inlet 147, which also includes a third one-way valve 148 that flows unidirectionally to the main pipe 141. More preferably, the side of the main pipe 141 connected to the hydraulic cavity 111 further includes a second one-way valve 146 that flows unidirectionally to the hydraulic cavity 111, and the side of the main pipe 141 connected to the branch pipe 142 further includes an inlet 147, which also includes a third one-way valve 148 that flows unidirectionally to the main pipe 141. By adding an inlet and a one-way valve to the main pipe of the reciprocating pump, the range of motion of the second piston can be increased by externally connecting a accumulator.

[0058] According to some embodiments of the present invention, the high viscosity oil filtration device further includes a liquid storage tank 160, the bottom of which is connected to the liquid inlet 147.

[0059] According to some embodiments of this utility model, the liquid storage tank 160 further includes a return pipe 161, which is connected to the hydraulic chamber 111. The return pipe 161 also includes a valve 162. More preferably, the connection between the return pipe 161 and the hydraulic chamber 111 is located outside the movable range of the second piston 150. By setting the return pipe, when the sample is continuously added and the valve is opened, the hydraulic fluid in the hydraulic chamber can flow back to the liquid storage tank, and the second piston rises to form a circulation.

[0060] According to some embodiments of the present invention, the liquid inlet 147 also includes a pressure pump with the pressure direction facing the cavity 110.

[0061] According to some embodiments of the present invention, the bottom of the high viscosity oil filtration device also includes wheels for moving the filtration device.

[0062] According to some embodiments of this utility model, the bottom of the housing 100 also includes a liquid collection port with a tapered design, located below the filter mechanism 120. With the liquid collection port installed, packaging bags can be directly attached or samples can be attached to pipes in other reaction systems.

[0063] Reference Figure 2 , Figure 2 This is a schematic diagram of another high-viscosity oil filtration device according to an embodiment of the present invention; it includes a housing 100, a cavity 110 disposed within the housing 100, a filtration mechanism 120 disposed at the bottom of the housing 100 and connected to the cavity 110, a sample inlet 130 disposed on the outer wall of the housing 100 and connected to the cavity 110, and a reciprocating pump 140 disposed at the top of the housing 100;

[0064] The sample dispensing port 130 is used to dispense samples into the cavity 110;

[0065] The filtration mechanism 120 is used to filter the sample inside the cavity 110;

[0066] The reciprocating pump 140 is used to pressurize the sample inside the cavity 110;

[0067] The sample inlet 130 includes a first one-way valve 131 that flows unidirectionally into the cavity 110;

[0068] The reciprocating pump 140 includes a main pipe 141 and two or more branch pipes 142. One side of the main pipe 141 is connected to the cavity 110, and the other side of the main pipe 141 is connected to each branch pipe 142. The branch pipes 142 have the same orientation. Each branch pipe 142 also includes a first piston 143 that can move up and down the inner wall of the branch pipe 142 in an airtight manner, and a connecting rod 144 with one end connected to the first piston 143 and the other end located outside the branch pipe 142. The connecting rod 144 also includes a latch 145 on the end located outside the branch pipe 142. Each latch 145 can be locked and unlocked by each other. The side of the main pipe 141 connected to the cavity 110 also includes a second one-way valve 146 that flows unidirectionally to the cavity 110. The side of the main pipe 141 connected to the branch pipes 142 also includes an inlet 147. The inlet 147 also includes a third one-way valve 148 that flows unidirectionally to the main pipe 141.

[0069] The cavity 110 of the high viscosity oil filtration device also includes a second piston 150 that can move up and down in an airtight manner within the cavity 110. The second piston 150 divides the cavity 110 into an upper hydraulic cavity 111 and a lower filtration cavity 112.

[0070] The high viscosity oil filtration device also includes a storage tank 160, the bottom of which is connected to the inlet 147. The storage tank 160 also includes a return pipe 161, which is connected to the hydraulic chamber 111. The return pipe 161 also includes a valve 162.

[0071] Filtering steps:

[0072] (1) Add hydraulic fluid to the reservoir so that the hydraulic chamber and the reciprocating pump are filled with hydraulic fluid;

[0073] (2) Open the valve in the reflux tube and add the sample through the sample inlet so that the filter chamber is filled with the sample to be filtered until the second piston above the filter chamber can no longer rise.

[0074] (3) Close the valve in the return pipe, select the number of branch pipes to work by using the lock switch, start the reciprocating pump, the second piston begins to descend, and pressure filtration begins.

[0075] Repeat steps (2) and (3) until the filtration of the sample is complete.

Claims

1. A high-viscosity oil filtration device, characterized in that, It includes a housing, a cavity disposed within the housing, a filter mechanism disposed at the bottom of the housing and communicating with the cavity, a sample dispensing port disposed on the outer wall of the housing and communicating with the cavity, and a reciprocating pump disposed at the top of the housing; The sample dispensing port includes a first one-way valve that directs flow in one direction to the cavity; The reciprocating pump includes a main pipe and two or more branch pipes. One side of the main pipe is connected to the cavity, and the other side of the main pipe is connected to each of the branch pipes. The branch pipes are oriented in the same direction. Each branch pipe also includes a first piston that can move up and down in an airtight manner on the inner wall of the branch pipe, a connecting rod connected to the first piston and whose other end is located outside the branch pipe, and a latch on the outer end of the connecting rod located outside the branch pipe. Each latch can be locked and unlocked by interlocking with each other.

2. The high-viscosity oil filtration device according to claim 1, characterized in that, The high-viscosity oil filtration device also includes an exhaust valve disposed on the top of the housing and connected to the cavity, the exhaust valve being used to exhaust air from the cavity.

3. The high-viscosity oil filtration device according to claim 1, characterized in that, The ratio of the sum of the cross-sections of each of the first pistons to the filtration area of ​​the filtration mechanism is less than or equal to 0.

5.

4. The high-viscosity oil filtration device according to claim 1, characterized in that, The filtration mechanism further includes at least one of the following: filter screen, sand core filter plate, sieve plate, filter paper, ceramic filter plate, and cotton filter plate.

5. The high-viscosity oil filtration device according to claim 4, characterized in that, The filtration mechanism also includes two or more layers of filter screens or sieve plates stacked together, and each filter screen or sieve plate can rotate relative to each other and undergo relative displacement.

6. The high-viscosity oil filtration device according to claim 1, characterized in that, The cavity of the high viscosity oil filtration device further includes a second piston capable of airtight up-and-down piston movement within the cavity. The second piston divides the cavity into an upper hydraulic cavity and a lower filtration cavity. The hydraulic cavity further includes hydraulic fluid.

7. The high-viscosity oil filtration device according to claim 6, characterized in that, The sample inlet is connected to the filter chamber, and the connection point is outside the movable range of the second piston.

8. The high viscosity oil filtration device according to claim 6, characterized in that, The side of the main pipeline connected to the cavity also includes a second one-way valve that flows unidirectionally to the cavity, and the side of the main pipeline connected to the branch pipeline also includes an inlet, which further includes a third one-way valve that flows unidirectionally to the main pipeline.

9. The high viscosity oil filtration device according to claim 8, characterized in that, The high-viscosity oil filtration device also includes a liquid storage tank, the bottom of which is connected to the liquid inlet.

10. The high-viscosity oil filtration device according to claim 9, characterized in that, The liquid storage tank also includes a return pipe, which is connected to the hydraulic chamber, and the return pipe also includes a valve.

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