CN-224207779-U - Seawater sample suction filtration device

Abstract

The utility model belongs to the technical field of experimental instruments and equipment, and provides a seawater sample suction filtration device which comprises a machine body provided with a rotatable supporting tray, a sample injection mechanism, a filter sealing mechanism and a sample discharging mechanism, wherein the sample injection mechanism, the filter sealing mechanism and the sample discharging mechanism are arranged in the machine body, the supporting tray is provided with a plurality of filter membrane placing holes which are distributed at intervals along the circumferential direction, the filter sealing mechanism comprises a filter membrane unit which is detachably arranged at the position of the filter membrane placing holes, a lifting top pressure sealing cover which is arranged above the filter membrane unit, and a lifting bottom support sealing seat which is arranged below the filter membrane unit, the top pressure sealing cover is communicated with the sample injection mechanism, and the bottom support sealing seat is communicated with the sample discharging mechanism. The seawater sample suction filtration device provided by the utility model has the advantages that the structure is simple, the use is convenient, the replacement difficulty of the filter membrane is reduced, the rapid, efficient and stable replacement of the filter membrane is realized, meanwhile, the seawater sample solution is not required to be manually transferred, and the efficiency of seawater sample filtration treatment is improved.

Inventors

• ZHOU CHAOFAN
• SHAO CHENXI
• DING JIEQIONG
• WANG JIE
• HE KANGYU
• WEI AIHONG
• ZHAO YONGGANG
• PENG MO
• ZHANG XIAOYU
• ZHENG JIANGPENG
• FU DAN
• FENG DEQUAN
• GE LEILEI
• ZHANG JIAN
• CAI RUI

Assignees

• 江苏省环境监测中心

Dates

Publication Date

20260508

Application Date

20250603

Claims (6)

1. 1. The seawater sample suction filtration device is characterized by comprising a machine body (1) provided with a rotatable bearing disc (2), and a sample injection mechanism, a filter sealing mechanism (3) and a sample discharge mechanism which are arranged in the machine body (1); The support plate (2) is provided with a plurality of filter membrane placement holes (21) distributed along the circumferential direction at intervals, the filter membrane placement mechanism (3) comprises a filter membrane unit (31) detachably arranged at the position of the filter membrane placement holes (21), a lifting top pressure sealing cover (32) arranged above the filter membrane unit (31) and a lifting bottom support sealing seat (33) arranged below the filter membrane unit (31), the top pressure sealing cover (32) is communicated with the sample injection mechanism, and the bottom support sealing seat (33) is communicated with the sample discharge mechanism.
2. 2. The seawater sample suction filtration apparatus according to claim 1, wherein the filter membrane unit (31) comprises a ring bracket (311) fitted with the filter membrane placement hole (21), and a filter membrane (312) fixedly provided on an inner ring of the ring bracket (311); The pressing sealing cover (32) is in sealing contact with the upper end face of the ring bracket (311), and the bottom supporting sealing seat (33) is in sealing contact with the lower end face of the ring bracket (311).
3. 3. The seawater sample suction filtration device according to claim 2, wherein the inner wall of the filter membrane placement hole (21) is provided with an inwardly protruding annular protrusion (211), and the annular bracket (311) is provided with an annular groove (3111) adapted to the annular protrusion (211).
4. 4. The seawater sample suction filtration device according to claim 1, wherein the sealing and filtering mechanism (3) further comprises a lifting motor (34) fixedly arranged inside the main body (1), and an output shaft of the lifting motor (34) is parallel to the axis of the filter membrane placement hole (21); The jacking seal cover (32) is provided with a jacking support arm (321) sleeved on the periphery of an output shaft of the lifting motor (34), the bottom support seal seat (33) is provided with a bottom support arm (331) sleeved on the periphery of the output shaft of the lifting motor (34), and the jacking support arm (321) and the bottom support arm (331) are in threaded connection with the output shaft of the lifting motor (34) and have opposite spiral directions.
5. 5. The seawater sample suction filtration device according to claim 4, wherein the sealing and filtering mechanism (3) further comprises a limiting plate (35) fixedly connected with the main body (1), and the limiting plate (35) is positioned between the lifting motor (34) and the supporting disc (2); The limiting plate (35) is provided with an upper slotted hole (351) matched with the top support arm (321) and a lower slotted hole (352) matched with the bottom support arm (331), the top support arm (321) is arranged in the upper slotted hole (351) in a penetrating mode in a lifting mode, and the bottom support arm (331) is arranged in the lower slotted hole (352) in a penetrating mode in a lifting mode.
6. 6. The seawater sample suction filtration device according to claim 1, wherein the sample injection mechanism comprises a sample injection cylinder (4) communicated with the top pressure sealing cover (32) through a sample injection pipeline (5), and a sample injection pump arranged on the sample injection pipeline (5); The sample discharging mechanism comprises a sample storage cylinder (6) communicated with the collet seal seat (33) through a sample discharging pipeline (7), and a negative pressure pump arranged on the sample discharging pipeline (7).

Description

Seawater sample suction filtration device Technical Field The utility model belongs to the technical field of experimental instruments and equipment, and particularly relates to a seawater sample suction filtration device. Background In the marine ecological environment monitoring process, the seawater is usually required to be subjected to sample collection and suction filtration treatment, and the current equipment for suction filtration of the seawater sample generally comprises a suction filtration container provided with a filter membrane, a suction filtration buffer bottle, a vacuum negative pressure pump and other parts. Meanwhile, the filter membrane is easy to form blockage in the process of filtering the seawater sample, the filter membrane is required to be frequently replaced to ensure the filtering effect, different filter treatment requirements are met for different seawater samples, the filter membrane with different apertures is required to be selected according to the requirements, the conventional filter instrument equipment is complex in step and high in operation difficulty, and the seawater sample solution in the suction filtration container is required to be transferred, so that the filtering treatment efficiency of the seawater sample is seriously affected. Therefore, there is a need to design a seawater sample suction filtration apparatus that at least solves some of the above problems and drawbacks. Disclosure of Invention The utility model provides the seawater sample suction filtration device, which is simple in structure and convenient to use, reduces the replacement difficulty of a filter membrane, realizes the rapid, efficient and stable replacement of the filter membrane, does not need to manually transfer seawater sample solution, and improves the efficiency of seawater sample filtration treatment. The technical scheme of the utility model is as follows: The utility model provides a seawater sample suction filtration device, which comprises a machine body provided with a rotatable supporting tray, and a sample injection mechanism, a sealing and filtering mechanism and a sample discharging mechanism which are arranged in the machine body; the filter sealing mechanism comprises a filter membrane unit, a lifting top pressure sealing cover and a lifting bottom support sealing seat, wherein the filter membrane unit is arranged at the position of the filter membrane placing hole, the lifting top pressure sealing cover is arranged above the filter membrane unit, the bottom support sealing seat is arranged below the filter membrane unit, the top pressure sealing cover is communicated with the sample feeding mechanism, and the bottom support sealing seat is communicated with the sample discharging mechanism. Preferably, the filter membrane unit comprises a ring bracket matched with the filter membrane placing hole and a filter membrane fixedly arranged in the inner ring of the ring bracket; The jacking sealing cover is in sealing abutting joint with the upper end face of the ring bracket, and the bottom bracket sealing seat is in sealing abutting joint with the lower end face of the ring bracket. Preferably, the inner wall of the filter membrane placing hole is provided with an inward extending annular protrusion, and the annular bracket is provided with an annular groove matched with the annular protrusion. (the ring convex and/or the ring bracket are made of soft rubber materials, the cross sections of the ring convex and the ring groove are isosceles trapezoids or isosceles triangles so as to improve the stability of the ring bracket in the filter membrane placement hole and not easy to separate from falling off) Preferably, the filter sealing mechanism further comprises a lifting motor fixedly arranged in the machine body, and an output shaft of the lifting motor is parallel to the axis of the filter membrane placing hole; The jacking seal cover is provided with a jacking support arm sleeved on the periphery of an output shaft of the lifting motor, the bottom support seal seat is provided with a bottom support arm sleeved on the periphery of the output shaft of the lifting motor, and the jacking support arm and the bottom support arm are in threaded connection with the output shaft of the lifting motor and have opposite spiral directions. Preferably, the sealing and filtering mechanism further comprises a limiting plate fixedly connected with the machine body, and the limiting plate is positioned between the lifting motor and the bearing plate; The limiting plate is provided with an upper slotted hole matched with the top support arm and a lower slotted hole matched with the bottom support arm, the top support arm is arranged in the upper slotted hole in a penetrating mode in a lifting mode, and the bottom support arm is arranged in the lower slotted hole in a penetrating mode in a lifting mode. Preferably, the sample injection mechanism comprises a sample injection cylinder commu