Pump head core for chromatographic detection sample injection

Abstract

The utility model discloses a pump head core for chromatographic detection sample introduction, which comprises a driving component, a liquid extraction component, a pump head component and a cleaning component, the liquid extraction component is arranged on one side of the driving component and is installed and connected in the driving component, the pump head component is arranged on one side of the liquid extraction component, one end of the pump head component is fixedly connected in the liquid extraction component, and the other end of the pump head component is fixedly connected in the cleaning component. The cleaning assemblies are arranged in the liquid pumping assembly and the pump head assembly, the cleaning assemblies are installed and connected in the pump head assembly and the liquid pumping assembly, through the modular design, the infusion pump can be conveniently assembled and disassembled, all the modules are in threaded connection, and convenience is provided for follow-up overhauling work.

Description

Technical Field

[0001] The utility model relates to an infusion pump, in particular to a pump head core for chromatographic detection and sample injection. Background Art

[0002] The plunger assembly and sealing ring in the liquid chromatography pump are installed on the pump head, which respectively play the role of transporting liquid and sealing the high-pressure mobile phase in the pump chamber. It is one of the core components of the liquid chromatography infusion pump.

[0003] Most infusion pumps in the prior art are of integral structure without modular layout, and subsequent maintenance work takes a long time. Utility Model Content

[0004] The purpose of the utility model is to provide a pump head core for chromatographic detection and sample injection, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pump head core for chromatographic detection sampling, a liquid extraction component is provided on one side of the driving component, the liquid extraction component is installed and connected in the driving component, a pump head assembly is provided on one side of the liquid extraction component, one end of the pump head assembly is fixedly connected to the liquid extraction component, a cleaning component is provided in the liquid extraction component and the pump head assembly, the cleaning component is installed and connected in the pump head assembly and the liquid extraction component, the pump head assembly includes a pump head, a liquid inlet, a liquid outlet, a connecting pipeline, and a push rod cavity, one end of the pump head is provided with a thread, the pump head is meshed and connected to the pump body shell, a liquid inlet and a liquid outlet are provided on one side of the pump head, the liquid inlet and the liquid outlet are fixedly connected to the pump head, a connecting pipeline is provided between the liquid inlet and the liquid outlet, and the connecting pipeline is connected to the push rod cavity.

[0007] As a further solution of the present utility model: the drive assembly includes a motor housing, a motor, a pump body housing, a cam, a connecting housing, a belt, and a cam connecting shaft. The motor is provided in the motor housing, and the motor is fixedly connected to the motor housing. A pump body housing is provided on one side of the motor housing, and the pump body housing is meshedly connected to the motor housing. A connecting housing is provided on one side of the pump body housing, and the connecting housing is fixedly connected to the pump body housing and the motor housing. The output end of the motor and the cam connecting shaft are provided in the connecting housing, and the output end of the motor is connected to the cam connecting shaft through a belt. A cam is provided at one end of the cam connecting shaft, and the cam is fixedly connected to the cam connecting shaft, and the cam is rotatably connected in the pump body.

[0008] As a further solution of the present invention: the liquid pumping assembly includes a roller, a plunger, a spring, a back seat, and a plunger push rod. A plunger is provided in the pump body shell, the plunger is slidably connected to the pump body shell, a roller is provided in the plunger, the roller is rotatably connected to the plunger, one side of the roller is overlapped with the cam, a back seat is provided on one side of the plunger, the back seat is fixedly connected to the pump body frame, a spring is provided between the back seat and the plunger, both ends of the spring are fixedly connected to the back seat and the plunger, a plunger push rod is provided on one side of the plunger, the plunger push rod is fixedly connected to the plunger, and the plunger push rod passes through the back seat.

[0009] As a further solution of the utility model: the cleaning component includes a cleaning nut, a water inlet, a scraper, a seal, and a sealing block. Cleaning nuts are provided on both sides of the pump head, the cleaning nut is threadedly connected to the pump head, a water inlet is provided in the cleaning nut, the water inlet is integrally formed on the cleaning nut, a scraper is provided on one side of the cleaning nut, the scraper is fixedly connected to the pump head, a seal is provided in the pump head, the seal is fixedly connected to the pump head, a sealing block is provided in the seal, and the sealing block is fixedly connected in the seal.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The modular design makes it easy to assemble and disassemble the infusion pump. Each module is connected by threads, which facilitates subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a pump head core for chromatographic detection injection.

[0013] Figure 2 This is a schematic diagram of the structure of the motor housing in a pump head core for chromatographic detection and injection.

[0014] Figure 3 The figure is a schematic diagram of the structure of a pump head core connected to the outer shell for chromatographic detection and injection. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figures 1 to 3 In an embodiment of the present invention, a pump head core for chromatographic detection and sample injection includes a driving component 100, a liquid pumping component 200, a pump head component 300 and a cleaning component 400.

[0017] A liquid extraction component 200 is provided on one side of the driving component 100, and the liquid extraction component 200 is installed and connected in the driving component 100. A pump head component 300 is provided on one side of the liquid extraction component 200, and one end of the pump head component 300 is fixedly connected to the liquid extraction component 200. A cleaning component 400 is provided in the liquid extraction component 200 and the pump head component 300, and the cleaning component 400 is installed and connected in the pump head component 300 and the liquid extraction component 200.

[0018] The drive assembly 100 includes a motor housing 101, a motor 102, a pump body housing 103, a cam 104, a connecting housing 105, a belt 106, and a cam connecting shaft 107. The motor housing 101 is provided with a motor 102, and the motor 102 is fixedly connected to the motor housing 101. A pump body housing 103 is provided on one side of the motor housing 101, and the pump body housing 103 is meshedly connected to the motor housing 101. A connecting housing 105 is provided on one side of the pump body housing 103, and the connecting housing 105 is fixedly connected to the pump body housing 103 and the motor housing 101. The output end of the motor 102 and the cam connecting shaft 107 are provided in the connecting housing 105, and the output end of the motor 102 is connected to the cam connecting shaft 107 through the belt 106. A cam 104 is provided at one end of the cam connecting shaft 107, and the cam 104 is fixedly connected to the cam connecting shaft 107, and the cam 104 is rotatably connected to the pump body.

[0019] The liquid pumping assembly 200 includes a roller 201, a plunger 202, a spring 203, a back seat 204, and a plunger push rod 205. The pump body housing 103 is provided with a plunger 202, the plunger 202 is slidably connected to the pump body housing 103, the plunger 202 is provided with a roller 201, the roller 201 is rotatably connected to the plunger 202, one side of the roller 201 overlaps with the cam 104, one side of the plunger 202 is provided with a back seat 204, the back seat 204 is fixedly connected to the pump body housing 103, a spring 203 is provided between the back seat 204 and the plunger 202, both ends of the spring 203 are fixedly connected to the back seat 204 and the plunger 202, a one side of the plunger 202 is provided with a plunger push rod 205, the plunger push rod 205 is fixedly connected to the plunger 202, and the plunger push rod 205 passes through the back seat 204.

[0020] The pump head assembly 300 includes a pump head 301, a liquid inlet 302, a liquid outlet 303, a connecting pipe 304, and a push rod cavity 305. One end of the pump head 301 is provided with a thread, and the pump head 301 is meshed and connected to the pump body shell 103. One side of the pump head 301 is provided with a liquid inlet 302 and a liquid outlet 303. The liquid inlet 302 and the liquid outlet 303 are fixedly connected to the pump head 301. A connecting pipe 304 is provided between the liquid inlet 302 and the liquid outlet 303, and the connecting pipe 304 is connected to the push rod cavity 305.

[0021] The cleaning assembly 400 includes a cleaning nut 401, a water inlet 402, a scraper 403, a seal 404, and a sealing block 405. Cleaning nuts 401 are provided on both sides of the pump head 301, and the cleaning nut 401 is threadedly connected to the pump head 301. A water inlet 402 is provided in the cleaning nut 401, and the water inlet 402 is integrally formed on the cleaning nut 401. A scraper 403 is provided on one side of the cleaning nut 401, and the scraper 403 is fixedly connected to the pump head 301. A seal 404 is provided in the pump head 301, and the seal 404 is fixedly connected to the pump head 301. A sealing block 405 is provided in the seal 404, and the sealing block 405 is fixedly connected to the seal 404.

[0022] The working principle of this utility model is:

[0023] During operation, the modular design makes it easy to assemble and disassemble the infusion pump. Each module is connected by threads, which facilitates subsequent maintenance work.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pump head core for chromatographic detection and sample injection, comprising a drive assembly (100), a liquid extraction assembly (200), a pump head assembly (300) and a cleaning assembly (400), characterized in that: A liquid pumping assembly (200) is provided on one side of the driving assembly (100), and the liquid pumping assembly (200) is installed and connected in the driving assembly (100). A pump head assembly (300) is provided on one side of the liquid pumping assembly (200), and one end of the pump head assembly (300) is fixedly connected in the liquid pumping assembly (200). A cleaning assembly (400) is provided in the liquid pumping assembly (200) and the pump head assembly (300), and the cleaning assembly (400) is installed and connected in the pump head assembly (300) and the liquid pumping assembly (200). The pump head assembly (300) includes a pump head (301), A liquid inlet (302), a liquid outlet (303), a connecting pipe (304), and a push rod cavity (305) are provided. One end of the pump head (301) is provided with a thread. The pump head (301) is meshed and connected with the pump body shell (103). A liquid inlet (302) and a liquid outlet (303) are provided on one side of the pump head (301). The liquid inlet (302) and the liquid outlet (303) are fixedly connected to the pump head (301). A connecting pipe (304) is provided between the liquid inlet (302) and the liquid outlet (303). The connecting pipe (304) is communicated with the push rod cavity (305).

2. A chromatographic detection sample injection pump head core according to claim 1, characterized in that: The driving assembly (100) includes a motor housing (101), a motor (102), a pump housing (103), a cam (104), a connecting housing (105), a belt (106), and a cam connecting shaft (107). The motor housing (101) is provided with a motor (102), and the motor (102) is fixedly connected to the motor housing (101). A pump housing (103) is provided on one side of the motor housing (101), and the pump housing (103) is meshedly connected to the motor housing (101). A connecting shell (105) is provided on the side, and the connecting shell (105) is fixedly connected to the pump body shell (103) and the motor shell (101). The output end of the motor (102) and the cam connecting shaft (107) are provided in the connecting shell (105). The output end of the motor (102) is connected to the cam connecting shaft (107) through a belt (106). A cam (104) is provided at one end of the cam connecting shaft (107). The cam (104) is fixedly connected to the cam connecting shaft (107). The cam (104) is rotatably connected to the pump body.

3. A pump head core for chromatographic detection and sample injection according to claim 1, characterized in that: The pumping assembly (200) includes a roller (201), a plunger (202), a spring (203), a back seat (204), and a plunger push rod (205). The pump housing (103) is provided with a plunger (202). The plunger (202) is slidably connected to the pump housing (103). The plunger (202) is provided with a roller (201). The roller (201) is rotatably connected to the plunger (202). One side of the roller (201) overlaps with the cam (104). The plunger (202) is provided with a roller (201). A rear seat (204) is provided on one side of the pump body (102), the rear seat (204) is fixedly connected to the pump body housing (103), a spring (203) is provided between the rear seat (204) and the plunger (202), both ends of the spring (203) are fixedly connected to the rear seat (204) and the plunger (202), a plunger push rod (205) is provided on one side of the plunger (202), the plunger push rod (205) is fixedly connected to the plunger (202), and the plunger push rod (205) passes through the rear seat (204).

4. A chromatographic detection sample injection pump head core according to claim 1, characterized in that: The cleaning assembly (400) comprises a cleaning nut (401), a water inlet (402), a scraper (403), a sealing member (404), and a sealing block (405). Cleaning nuts (401) are provided on both sides of the pump head (301). The cleaning nut (401) is threadedly connected to the pump head (301). The cleaning nut (401) is provided with a water inlet (402). The water inlet (402) is integrally formed on the cleaning nut (401). A scraper (403) is provided on one side of the cleaning nut (401). The scraper (403) is fixedly connected to the pump head (301). A sealing member (404) is provided in the pump head (301). The sealing member (404) is fixedly connected to the pump head (301). A sealing block (405) is provided in the sealing member (404). The sealing block (405) is fixedly connected to the sealing member (404).

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