Plunger pump for extracting heavy oil of bilge water separator
By providing a guide and a return spring in the plunger pump used to extract heavy oil from the bilge water separator, the problem of untimely piston return in the screw pump when processing heavy oil is solved, the sealing and flow stability are achieved, and the use effect of the equipment is improved.
Patent Information
- Application Number
- CN202422485424.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the prior art, when a screw pump processes bilge water containing heavy oil with relatively high viscosity, the piston reset action cannot respond in time, resulting in poor sealing and failure to achieve the designed flow rate.
A plunger pump for extracting heavy oil from a bilge water separator was designed. A guide and return spring were installed on the valve core to ensure rapid resetting of the valve core in the direction of movement, achieving tightness and flow stability. A herringbone-shaped guide plate was used to reduce obstruction to oil flow.
The sealing performance and output flow of the plunger pump are improved, leakage is reduced, and the reliability and processing capacity of the equipment are ensured.
Smart Images
Figure CN223344238U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plunger pumps, in particular to a plunger pump used for extracting heavy oil from a bilge water separator. Background Art
[0002] Generally speaking, the amount of water accumulated in the engine room bilge of a ship in normal operation is 1 to 10 cubic meters per day. This bilge water must be removed promptly, otherwise it will affect the stability of the ship, cause structural corrosion of the hull, and expose the machinery space to a humid environment, which in serious cases will endanger the safety of the ship. However, bilge water contains heavy oil, diesel, etc.
[0003] According to Chapter 5, "Prevention of Pollution from Ships," of the "Technical Rules for the Mandatory Inspection of Domestic Seagoing Vessels" issued by the Maritime Safety Administration of the People's Republic of China, all vessels of 400 gross tonnage and above but less than 10,000 gross tonnage and vessels of 10,000 gross tonnage and above must be equipped with compliant oil filtration equipment. The design of the oil filtration equipment must be approved and ensure that the oil content of the oily mixture discharged into the sea through the system does not exceed 15 ppm. This oil filtration equipment, known as an oil-water separator, removes oil contaminants. The filtered water, with an oil content below 15 ppm, is then discharged directly into the sea. The discharge method involves installing a bilge well in each tank's bilge. Bilge water, caused by the ship's rocking, collects in the bilge well. A suction filter is installed in the bilge well and connected to the suction line. When the water level reaches a certain level, the on-duty personnel activate the bilge pump to transfer the bilge water to the oil-water separator for treatment. The oil is then discharged into the bilge tank and discharged outboard.
[0004] To meet diverse customer needs, the power systems for oil-water separators to draw wastewater are currently available in two types: screw pumps and plunger pumps. However, due to the inherent structural limitations of screw pumps, when the wastewater contains a high proportion of heavy oil with high viscosity, the piston's return action is affected and cannot respond in time to form a seal, thus failing to achieve the designed flow rate and thus affecting the equipment's processing capacity. Therefore, a plunger pump with a stable structure and reliable operation is urgently needed to meet actual on-site requirements. Utility Model Content
[0005] The utility model aims to solve the problem in the prior art that the piston resetting action cannot respond in time, and proposes a plunger pump for extracting heavy oil from a bilge water separator.
[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0007] A plunger pump for extracting heavy oil from a bilge water separator includes a drive unit for driving the plunger pump to operate, the plunger pump comprising: a piston cylinder, a cylinder body being provided on the piston cylinder, an output end of the drive unit being connected to one end of the piston cylinder; two sets of valve cores being slidably provided on the oil inlet and oil outlet of the cylinder body, respectively, the valve cores being provided with guide units, the guide units extending into the oil inlet and oil outlet, respectively; and a reset spring for resetting the guide units.
[0008] In order to facilitate the guidance of the valve core and the flow of oil, preferably, the guide part includes multiple groups of guide plates, the adjacent sides of the multiple groups of guide plates are fixedly connected to each other, and the outer walls of the multiple groups of guide plates are respectively against the inner walls of the oil inlet and the oil outlet.
[0009] In order to ensure the reliable position of the reset spring, the valve core further includes a baffle, one end of multiple groups of guide plates are fixedly connected to the bottom of the baffle, a limiting column is fixedly provided on the top of the baffle, and the reset spring is sleeved on the limiting column.
[0010] Furthermore, a stepped hole is provided in the cylinder body, a through oil inlet hole is provided at the bottom of the stepped hole, an oil outlet cylinder is slidably arranged in the stepped hole, the guide part is slidably arranged in the oil inlet hole and the oil outlet cylinder respectively, and a fixed plate is provided at the top of the stepped hole, a retaining ring is fixedly provided in the fixed plate through a connecting plate, a threaded cylinder is fixedly provided at the bottom of the fixed plate, the threaded cylinder is threadedly connected in the stepped hole, and the bottom of the threaded cylinder is against the top of the oil outlet cylinder.
[0011] Furthermore, a piston cavity is provided in one end of the piston cylinder, a piston rod is slidably provided in the piston cavity, one end of the piston rod is connected to the output end of the driving part, and a connecting hole connected to the piston cavity is provided at the other end of the piston cylinder, and a connecting tube connected to the stepped hole is fixedly provided on the side wall of the cylinder body, and the connecting tube is threadedly connected in the connecting hole.
[0012] Furthermore, the driving part includes a base plate, a bracket is fixedly provided on the base plate, a motor is fixedly provided on the bracket, a transmission member is provided on the bracket, the output end of the motor is connected to one end of the transmission machine, and the piston cylinder is fixedly connected to the base plate through the base, a connecting rod is rotatably provided on the end of the piston rod away from the piston cylinder, and the connecting rod is rotatably connected to the other end of the transmission member.
[0013] Compared with the prior art, the present invention provides a plunger pump for extracting heavy oil from a bilge water separator, which has the following beneficial effects:
[0014] 1. The plunger pump for extracting heavy oil from the bilge water separator has a guide portion provided on the valve core, which can provide a guiding function and quickly reset in the direction of movement, achieving sealing, fast and reliable response, and improving the use effect. In addition, a return spring is provided on the valve core. In addition to the pressure generated by the system itself, there is also the elastic force of the return spring. Under the combined action of these two forces, the valve core can be quickly reset in the only direction of movement, reducing leakage and ensuring the output flow and pressure of the plunger pump.
[0015] 2. The plunger pump used to extract heavy oil from the bilge water separator is equipped with a "human" shaped guide plate. On the one hand, it not only has a guiding effect to ensure that the baffle can be quickly and accurately reset, but also reduces the obstruction to the flow of oil, leaving a channel for oil circulation and improving the use effect.
[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model provides a guide part on the valve core, which can have a guiding effect, can be quickly reset in the direction of movement, achieve sealing, respond quickly and reliably, and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of a plunger pump for extracting heavy oil from a bilge water separator proposed in the utility model;
[0018] Figure 2 This is a cross-sectional view of a plunger pump for extracting heavy oil from a bilge water separator proposed in the utility model;
[0019] Figure 3 This is a structural schematic diagram of a plunger pump valve core for extracting heavy oil from a bilge water separator proposed in the utility model;
[0020] Figure 4 The utility model provides a structural schematic diagram of a plunger pump fixing plate for extracting heavy oil from a bilge water separator.
[0021] In the figure: 1. Motor; 2. Baffle; 201. Guide plate; 202. Limiting column; 3. Fixing plate; 301. Retaining ring; 302. Connecting plate; 303. Oil outlet cylinder; 304. Washer; 305. Threaded cylinder; 4. Bottom plate; 5. Cylinder body; 501. Oil inlet hole; 502. Connecting cylinder; 503. Stepped hole; 6. Piston cylinder; 601. Piston cavity; 602. Connecting hole; 603. Piston rod; 604. Base; 605. Connecting rod. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0024] Example:
[0025] Reference Figures 1-4 , a plunger pump for extracting heavy oil from a bilge water separator, including a driving part for driving the plunger pump to operate. Here, we prefer the driving part to be a bottom plate 4, a bracket is fixedly provided on the bottom plate 4, a motor 1 is fixedly provided on the bracket, a transmission member is provided on the bracket, the output end of the motor 1 is connected to one end of the transmission machine, and the piston cylinder 6 is fixedly connected to the bottom plate 4 through the base 604, a connecting rod 605 is rotatably provided on the end of the piston rod 603 away from the piston cylinder 6, and the connecting rod 605 is rotatably connected to the other end of the transmission member. When in use, by starting the motor 1, the output end of the motor 1 can drive the connecting rod 605 and the movable part through the transmission member. The piston rod 603 slides back and forth in the piston cylinder 6 to drive the operation of the plunger pump. Here, we design the transmission part as follows: a first rotating shaft is rotatably set on the bracket, a first pulley is fixedly set at the output end of the motor 1, a second pulley is fixedly set on one end of the first rotating shaft, the first pulley is connected to the second pulley through a belt, a first gear is fixedly set at the other end of the first rotating shaft, a second rotating shaft is rotatably set on the bracket, a second gear meshing with the first gear is fixedly set on the second rotating shaft, and an eccentric shaft is fixedly set on the end face of the second gear, and the end of the connecting rod 605 away from the piston rod 603 is rotatably connected to the eccentric shaft. The plunger pump includes: a piston cylinder 6, a cylinder body 5 is provided on the piston cylinder 6, and the output end of the driving part is connected to one end of the piston cylinder 6; two groups of valve cores are respectively slidably provided on the oil inlet and oil outlet of the cylinder body 5, and a guide part is provided on the valve core, and the guide part is extended into the oil inlet and oil outlet respectively. When in use, by arranging the guide part on the valve core, it can have a guiding effect, can be quickly reset in the direction of movement, realize sealing, respond quickly and reliably, and improve the use effect; a reset spring is used to reset the guide part. When in use, by arranging the reset spring, in addition to the pressure generated by the system itself, there is also the elastic force of the reset spring. Under the joint action of the two forces, the valve core can be further quickly reset in the only direction of movement, reducing leakage and ensuring the output flow and pressure of the plunger pump.
[0026] Reference Figure 2 and Figure 4The guide portion includes multiple groups of guide plates 201. The guide plates 201 are provided in two to ten groups, preferably three groups, which are evenly distributed. The adjacent sides of the three groups of guide plates 201 are fixedly connected to each other to form an approximately "human" shaped structure, and the outer walls of the multiple groups of guide plates 201 are respectively against the inner walls of the oil inlet and the oil outlet. When in use, by setting the guide plates 201 with a "human" shaped structure, on the one hand, it not only has a guiding effect, but also ensures that the baffle 2 can be quickly and accurately reset. On the other hand, it can reduce the obstruction to the flow of oil, leaving a channel for the oil flow, and improving the use effect.
[0027] Reference Figure 3 and Figure 4 Here, the valve core includes a baffle 2, and one end of multiple groups of guide plates 201 are fixedly connected to the bottom of the baffle 2. A limiting column 202 is fixedly provided on the top of the baffle 2, and the reset spring is sleeved on the limiting column 202. When in use, the oil outlet and the oil inlet can be blocked by setting the baffle 2, and the guide plate 201 is fixed to the baffle 2, so that the baffle 2 can be quickly reset, and the reset spring is sleeved on the limiting column 202, which can reduce the deflection of the reset spring, prevent the reset spring from falling, and improve the use effect.
[0028] Reference Figure 2-Figure 4A stepped hole 503 is provided in the cylinder body 5, and a through oil inlet hole 501 is provided at the inner bottom of the stepped hole 503. The stepped hole 503 is preferably provided with two steps, that is, there are three sections of holes, which are the first hole, the second hole, the third hole, the first step, and the second step from top to bottom. An oil outlet cylinder 303 is slidably provided in the stepped hole 503, that is, the oil outlet cylinder 303 is slidably provided in the second hole, and a washer 304 is slidably provided in the second hole, and the bottom of the washer 304 is abutted against the second step. , the top of the washer 304 is against the bottom of the oil outlet cylinder 303, and the guide parts are slidably set in the oil inlet hole 501 and the oil outlet cylinder 303 respectively, and a fixing plate 3 is provided on the top of the stepped hole 503, and a connecting pipe is fixedly provided on the top of the fixing plate 3 to facilitate the discharge of oil. A retaining ring 301 is fixedly provided in the fixing plate 3 through the connecting plate 302, and a threaded cylinder 305 is fixedly provided at the bottom of the fixing plate 3. The threaded cylinder 305 is threadedly connected to the stepped hole 503, that is, it is threadedly connected to the first hole, and the screw is fixed. The bottom of the groove cylinder 305 is against the top of the oil outlet cylinder 303, and the bottoms of the two groups of baffles 2 are respectively against the oil outlet end of the oil inlet hole 501 and the top end surface of the oil outlet cylinder 303, and the bottoms of the two groups of return springs are respectively against the tops of the corresponding baffles 2, and the tops are respectively against the bottoms of the gasket 304 and the bottoms of the retaining ring 301. During installation, first place one group of valve cores in the stepped hole 503 so that its guide part is located in the oil inlet hole 501, then put one group of return springs on the limit column 202, and then put The washer 304 and the oil outlet cylinder 303 are placed in the stepped hole 503 in sequence, and another set of valve cores are placed on the top of the oil outlet cylinder 303. At the same time, the guide part is located in the oil outlet cylinder 303, and another set of return springs are sleeved on the limit column 202. Finally, the threaded cylinder 305 on the fixed plate 3 is threadedly connected to the stepped hole 503, and the top of the other set of return springs is abutted against the retaining ring 301 in the fixed plate 3, so that the two sets of valve cores are installed in the cylinder body 5. The structure is simple, easy to assemble and disassemble, convenient for maintenance and replacement, and improves the use effect.
[0029] Reference Figure 2 A piston chamber 601 is provided in one end of the piston cylinder 6, and a piston rod 603 is slidably provided in the piston chamber 601, one end of the piston rod 603 is connected to the output end of the driving part, and a connecting hole 602 connected to the piston chamber 601 is provided at the other end of the piston cylinder 6, and a connecting tube 502 connected to the stepped hole 503 is fixedly provided on the side wall of the cylinder body 5, and the connecting tube 502 is threadedly connected to the connecting hole 602, and a sealing gasket is fixedly provided in the connecting hole 602, one end of the connecting tube 502 is abutted against the sealing gasket to improve the sealing effect. When in use, the cylinder body 5 is threadedly connected to the piston cylinder 6 to achieve split connection, which can reduce maintenance and replacement costs and improve the use effect.
[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A plunger pump for extracting heavy oil from a bilge water separator, comprising a driving unit for driving the plunger pump, characterized in that: The plunger pump comprises: A piston cylinder (6), wherein a cylinder body (5) is provided on the piston cylinder (6), and an output end of the driving portion is connected to one end of the piston cylinder (6); Two sets of valve cores are slidably arranged on the oil inlet and the oil outlet of the cylinder body (5), and the valve cores are provided with guide parts, and the guide parts extend into the oil inlet and the oil outlet respectively; A return spring, used for returning the guide portion to its original position; The guide portion comprises a plurality of groups of guide plates (201), adjacent sides of the plurality of groups of guide plates (201) are fixedly connected to each other, and outer walls of the plurality of groups of guide plates (201) respectively abut against inner walls of the oil inlet and the oil outlet.
2. A plunger pump for extracting heavy oil from a bilge water separator according to claim 1, characterized in that: The valve core comprises a baffle (2), one end of a plurality of groups of guide plates (201) are fixedly connected to the bottom of the baffle (2), a limiting column (202) is fixedly provided on the top of the baffle (2), and the return spring is sleeved on the limiting column (202).
3. A plunger pump for extracting heavy oil from a bilge water separator according to claim 2, characterized in that: A stepped hole (503) is provided in the cylinder body (5), a through oil inlet hole (501) is provided at the bottom of the stepped hole (503), an oil outlet cylinder (303) is slidably provided in the stepped hole (503), the guide portion is slidably provided in the oil inlet hole (501) and the oil outlet cylinder (303), and a fixing plate (3) is provided at the top of the stepped hole (503), a retaining ring (301) is fixedly provided in the fixing plate (3) via a connecting plate (302), a threaded cylinder (305) is fixedly provided at the bottom of the fixing plate (3), the threaded cylinder (305) is threadedly connected in the stepped hole (503), and the bottom of the threaded cylinder (305) abuts against the top of the oil outlet cylinder (303).
4. A plunger pump for extracting heavy oil from a bilge water separator according to claim 3, characterized in that: A piston cavity (601) is provided in one end of the piston cylinder (6), a piston rod (603) is slidably provided in the piston cavity (601), one end of the piston rod (603) is connected to the output end of the driving part, and a connecting hole (602) connected to the piston cavity (601) is provided at the other end of the piston cylinder (6), a connecting tube (502) connected to the stepped hole (503) is fixedly provided on the side wall of the cylinder body (5), and the connecting tube (502) is threadedly connected in the connecting hole (602).
5. A plunger pump for extracting heavy oil from a bilge water separator according to claim 4, characterized in that: The driving portion includes a base plate (4), a bracket is fixedly provided on the base plate (4), a motor (1) is fixedly provided on the bracket, a transmission member is provided on the bracket, an output end of the motor (1) is connected to one end of the transmission machine, and the piston cylinder (6) is fixedly connected to the base plate (4) through a base (604), a connecting rod (605) is rotatably provided on one end of the piston rod (603) away from the piston cylinder (6), and the connecting rod (605) is rotatably connected to the other end of the transmission member.