Delivery pump for liquid chromatograph

Abstract

The delivery pump comprises a first chromatographic instrument pump body, a first connecting plate is fixedly connected to the top of the chromatographic instrument pump body, a first sliding groove is formed in the surface of the first connecting plate, a first sliding plate is inserted into the inner side of the first sliding groove, and a protective shell is fixedly connected to the surface of the first sliding plate. And the bottom of the chromatographic instrument pump body is fixedly connected with a second connecting plate. According to the delivery pump for the liquid chromatograph, a first sliding groove is formed in a first connecting plate at the top of the first chromatographic instrument pump body, a protective shell is prevented from sliding out, in this way, when the first chromatographic instrument pump body is installed, only the first chromatographic instrument pump body and the first chromatographic instrument pump body need to be placed into a storage cabinet body together, and under extrusion of a wall, a square clamping block can move inwards; therefore, after the first chromatographic instrument pump body is placed, the protection shell can be easily pulled out, the first chromatographic instrument pump body is in a protection state in the installation process, and the safety protection performance of the device is improved to a large extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of delivery pumps for chromatographic instruments, in particular to a delivery pump for liquid chromatographic instruments. Background Art

[0002] A transfer pump for liquid chromatography instruments is a pump used in high-performance liquid chromatography instruments. It is mainly used to transport mobile phase to help achieve sample separation and analysis. The transfer pumps of liquid chromatographs usually include multiple types such as unit pumps, binary pumps and quaternary pumps. Each pump has its specific functions and applicable scenarios.

[0003] The liquid chromatography instrument delivery pumps currently on the market have the following problems when in use:

[0004] 1. During the transportation or installation process, the delivery pump for traditional liquid chromatography instruments may cause the device to collide or fall due to installation errors. There are few safety protection devices, which greatly reduces the safety protection of the device.

[0005] 2. Most liquid chromatography instrument delivery pumps usually have only one anti-slip structure superimposed on the relative connection after assembly. When encountering large shaking, the upper liquid chromatography instrument delivery pump may fall and be damaged, which greatly reduces the stability of the device. Utility Model Content

[0006] The utility model aims to provide a delivery pump for a liquid chromatography instrument to solve the technical problems raised in the background technology.

[0007] To achieve the above-mentioned objectives, the specific technical scheme of the present invention is as follows: A delivery pump for a liquid chromatography instrument, comprising a first chromatograph pump body, the top of the first chromatograph pump body is fixedly connected to a first connecting plate, a first slide groove is provided on the surface of the first connecting plate, a first slide plate is inserted into the inner side of the first slide groove, the surface of the first slide plate is fixedly connected to a protective shell, the bottom of the first chromatograph pump body is fixedly connected to a second connecting plate, a second slide groove is provided on the surface of the second connecting plate, a second slide plate is inserted into the inner side of the second slide groove, the surface of the first slide plate is fixedly connected to the protective shell, a through-hole is provided on the surface of the protective shell, a square block is inserted into the inner side of the through-hole, the surface of the square block is fixedly connected to a sliding rod, the surface of the sliding rod penetrates the fixed plate, and the surface of the fixed plate is fixedly connected to the chromatograph pump body.

[0008] Preferably, a third connecting plate is inserted into the inner side of the first slide groove, the top of the third connecting plate is fixedly connected to the second chromatograph pump body, a spherical slot is provided at the bottom of the second chromatograph pump body, and the top of the first connecting plate is fixedly connected to a soft sphere.

[0009] Preferably, the surface of the sliding rod is fixedly connected to a retaining ring, the surface of the retaining ring is fixedly connected to a spring, and the other end of the spring is fixedly connected to a fixed plate.

[0010] Preferably, a first chamfer is provided on the inner side of the first connecting plate, and a second chamfer is provided on the surface of the second connecting plate.

[0011] Preferably, the surface of the protective shell is fixedly connected to a handle, and the surface of the handle is provided with a rubber sleeve.

[0012] Preferably, an adjustment panel is provided on the surface of the first chromatograph pump body, and a liquid inlet is installed on the surface of the first chromatograph pump body.

[0013] The utility model provides a delivery pump for liquid chromatography instrument with the following advantages:

[0014] 1. A delivery pump for a liquid chromatography instrument, wherein a first slide groove is provided at the first connecting plate at the top of the first chromatograph pump body, and a second slide groove is provided at the second connecting plate at the bottom thereof, and then the first slide plate and the second slide plate fixedly connected to the surface of the protective shell are inserted therein, so that the first chromatograph pump body can be more comprehensively protected, and a fixing plate is fixedly connected to the back of the first chromatograph pump body, and a sliding rod structure connected by a spring is provided on the surface of the fixing plate, and a square clamping block fixedly connected at the end of the sliding rod structure is inserted into the through hole provided on the surface of the protective shell to prevent the protective shell from sliding out. In this way, when the first chromatograph pump body is installed, it only needs to be placed together with the first chromatograph pump body in the storage cabinet. Under the pressure of the wall, the square clamping block will move inward, so that after the first chromatograph pump body is placed, the protective shell can be easily pulled out, and the first chromatograph pump body is in a protected state during the installation process, which greatly increases the safety protection of the device;

[0015] 2. A delivery pump for a liquid chromatography instrument, wherein a third connecting plate is provided at the bottom of the second chromatograph pump body, and a spherical groove is provided at the bottom of the second chromatograph pump body, and a soft ball is fixedly connected to the surface of the third connecting plate. In this way, when the first chromatograph pump body and the second chromatograph pump body are stacked and installed, it is only necessary to insert the third connecting plate fixedly connected to the bottom of the second chromatograph pump body into the first slide groove until the soft ball is stuck in the spherical groove, thereby preventing the second chromatograph pump body and the first chromatograph pump body from sliding relative to each other. In this way, the second chromatograph pump body and the first chromatograph pump body connected by the slide groove greatly increase the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the liquid inlet structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the square card block structure of the present utility model;

[0020] Figure 4 This is a schematic diagram of the spherical slot structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the second chromatograph pump structure of the present utility model.

[0022] Explanation of the marks in the figure: 1. First chromatograph pump body; 2. First connecting plate; 3. Second connecting plate; 4. Protective shell; 5. First slide; 6. Second slide; 7. Perforation; 8. Fixed plate; 9. Sliding rod; 10. Spring; 11. Square block; 12. Retaining ring; 13. Second slide; 14. First slide; 15. Soft ball; 16. Spherical slot; 17. Adjustment panel; 18. Liquid inlet; 19. Rubber sleeve; 20. Handle; 21. First chamfer; 22. Second chamfer; 23. Second chromatograph pump body; 24. Third connecting plate. DETAILED DESCRIPTION

[0023] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0027] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a delivery pump for a liquid chromatography instrument of the present invention in conjunction with the accompanying drawings.

[0029] like Figure 1-5As shown, a delivery pump for a liquid chromatography instrument of the present invention comprises a first chromatograph pump body 1, the top of the first chromatograph pump body 1 is fixedly connected to a first connecting plate 2, a first chute 14 is provided on the surface of the first connecting plate 2, a first slide 5 is inserted into the inner side of the first chute 14, and a protective shell 4 is fixedly connected to the surface of the first slide 5. In this way, the protective shell 4 structure is provided to prevent the first chromatograph pump body 1 from being damaged when encountering a collision, thereby greatly increasing the safety protection of the device, and preventing the first chromatograph pump body 1 from being fixedly connected to the second connecting plate 3 at the bottom, a second chute 13 is provided on the surface of the second connecting plate 3, a second slide 13 is inserted into the inner side of the second slide 13, and the first slide 5 is fixedly connected to the surface of the first slide The protective shell 4 is fixedly connected to the surface, and a through-hole 7 is provided on the surface of the protective shell 4. A square card block 11 is inserted into the inside of the through-hole 7. The surface of the square card block 11 is fixedly connected to the sliding rod 9. The surface of the sliding rod 9 penetrates the fixed plate 8. The surface of the fixed plate 8 is fixedly connected to the chromatograph pump body. In this way, when installing the first chromatograph pump body 1, you only need to put it and the first chromatograph pump body 1 into the storage cabinet. Under the pressure of the wall, the square card block 11 will move inward, so that after the first chromatograph pump body 1 is placed, the protective shell 4 can be easily pulled out, and the first chromatograph pump body 1 is in a protected state during the installation process, which greatly increases the safety protection of the device.

[0030] The third connecting plate 24 is inserted into the inside of the first slide groove 14, and the top of the third connecting plate 24 is fixedly connected to the second chromatograph pump body 23. A spherical groove 16 is provided at the bottom of the second chromatograph pump body 23, and the top of the first connecting plate 2 is fixedly connected to the soft ball 15. In this way, when the first chromatograph pump body 1 and the second chromatograph pump body 23 are stacked and installed, it is only necessary to insert the third connecting plate 24 fixedly connected to the bottom of the second chromatograph pump body 23 into the first slide groove 14 until the soft ball 15 is stuck in the spherical groove 16 to prevent the second chromatograph pump body 23 and the first chromatograph pump body 1 from sliding relative to each other. In this way, the second chromatograph pump body 23 and the first chromatograph pump body 1 connected by the slide groove greatly increase the stability of the device.

[0031] The surface of the sliding rod 9 is fixedly connected to the retaining ring 12, and the surface of the retaining ring 12 is fixedly connected to the spring 10. The other end of the spring 10 is fixedly connected to the fixed plate 8. In this way, the retaining ring 12 structure is provided to increase the force structure of the spring 10 and the fixed plate 8, so that the sliding rod 9 can slide under the action of the spring 10, which greatly increases the rationality of the device.

[0032] A first chamfer 21 is provided on the inner side of the first connecting plate 2, and a second chamfer 22 is provided on the surface of the second connecting plate 3. In this way, the first chamfer 21 and the second chamfer 22 are provided on the inner sides of the first chute 14 and the second chute 13, making it easier to insert the first slide 5, the second slide 6 and the third connecting plate 24 into the inner sides of the first chute 14 and the second chute 13, thereby increasing the convenience of the device.

[0033] The surface of the protective shell 4 is fixedly connected to a handle 20, and the surface of the handle 20 is provided with a rubber sleeve 19. In this way, the handle 20 increases the stress points of the protective shell 4 structure, making it easier to pull out the protective shell 4, and greatly increasing the convenience of the device.

[0034] An adjustment panel 17 is provided on the surface of the first chromatograph pump body 1, and a liquid inlet 18 is installed on the surface of the first chromatograph pump body 1. The liquid to be separated or analyzed is placed into the device through the liquid inlet 18, and then the parameters are adjusted through the adjustment panel 17. The device can be opened for use, which greatly increases the practicality of the device.

[0035] The working principle of the delivery pump for liquid chromatography instrument: in the process of using the device, it is necessary to install it first, by opening a first slide 14 at the first connecting plate 2 on the top of the first chromatograph pump body 1, and opening a second slide 13 at the second connecting plate 3 at the bottom thereof, and then inserting the first slide 5 and the second slide 6 fixedly connected to the surface of the protective shell 4 into it, so as to more comprehensively protect the first chromatograph pump body 1, and a fixed plate 8 is fixedly connected to the back of the first chromatograph pump body 1, and a sliding rod 9 structure connected by a spring 10 is provided on the surface of the fixed plate 8, and the sliding rod 9 structure is connected by a spring 10. The square block 11 fixedly connected at the end of the structure is inserted into the through hole 7 opened on the surface of the protective shell 4 to prevent the protective shell 4 from slipping out. In this way, when installing the first chromatograph pump body 1, it is only necessary to put it and the first chromatograph pump body 1 into the storage cabinet. Under the pressure of the wall, the square block 11 will move inward, so that after the first chromatograph pump body 1 is placed, the protective shell 4 can be easily pulled out by pulling the handle 20. The handle 20 is provided with a rubber sleeve 19 to increase the friction coefficient for easy grip, and the first chromatograph pump body 1 is in a protected state during the installation process, which is to a large extent The safety protection of the device is increased. Then, when stacking, a third connecting plate 24 is opened at the bottom of the second chromatograph pump body 23, and a spherical card groove 16 is opened at the bottom of the second chromatograph pump body 23. The soft ball 15 is fixedly connected to the surface of the third connecting plate 24. In this way, when the first chromatograph pump body 1 and the second chromatograph pump body 23 are stacked and installed, it is only necessary to insert the third connecting plate 24 fixedly connected to the bottom of the second chromatograph pump body 23 into the first slide groove 14 until the soft ball 15 is stuck in the spherical card groove 16, thereby preventing the second chromatograph pump body 23 from being detached from the first chromatograph pump body 1. The second chromatograph pump body 23 and the first chromatograph pump body 1 connected by the slide grooves greatly increase the stability of the device, and the first chamfers 21 and the second chamfers 22 are provided on the inner sides of the first slide grooves 14 and the second slide grooves 13, so that the first slide plate 5, the second slide plate 6 and the third connecting plate 24 are inserted into the inner sides of the first slide grooves 14 and the second slide grooves 13 more easily. Finally, when the installation is completed and used, the liquid to be separated or analyzed is placed into the device through the liquid inlet 18, and then the parameters are adjusted through the adjustment panel 17, and then the device can be opened for use.

[0036] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A delivery pump for a liquid chromatography instrument, comprising a first chromatograph pump body (1), characterized in that: The top of the first chromatograph pump body (1) is fixedly connected to the first connecting plate (2), the surface of the first connecting plate (2) is provided with a first sliding groove (14), the inner side of the first sliding groove (14) is inserted into the first slide plate (5), the surface of the first slide plate (5) is fixedly connected to the protective shell (4), the bottom of the first chromatograph pump body (1) is fixedly connected to the second connecting plate (3), the surface of the second connecting plate (3) is provided with a second sliding groove (13), the inner side of the second sliding groove (13) is inserted into the second slide plate (6), the surface of the first slide plate (5) is fixedly connected to the protective shell (4), the surface of the protective shell (4) is provided with a through hole (7), the inner side of the through hole (7) is inserted into the square card block (11), the surface of the square card block (11) is fixedly connected to the sliding rod (9), the surface of the sliding rod (9) penetrates the fixed plate (8), and the surface of the fixed plate (8) is fixedly connected to the chromatograph pump body.

2. The liquid chromatography instrument delivery pump according to claim 1, characterized in that: A third connecting plate (24) is inserted into the inner side of the first sliding groove (14), the top of the third connecting plate (24) is fixedly connected to the second chromatograph pump body (23), a spherical card slot (16) is provided at the bottom of the second chromatograph pump body (23), and the top of the first connecting plate (2) is fixedly connected to the soft sphere (15).

3. The liquid chromatography instrument delivery pump according to claim 1, characterized in that: The surface of the sliding rod (9) is fixedly connected to a retaining ring (12), the surface of the retaining ring (12) is fixedly connected to a spring (10), and the other end of the spring (10) is fixedly connected to a fixed plate (8).

4. The liquid chromatography instrument delivery pump according to claim 1, characterized in that: A first chamfer (21) is provided on the inner side of the first connecting plate (2), and a second chamfer (22) is provided on the surface of the second connecting plate (3).

5. The liquid chromatography instrument delivery pump according to claim 1, characterized in that: The surface of the protective shell (4) is fixedly connected to a handle (20), and the surface of the handle (20) is provided with a rubber sleeve (19).

6. The liquid chromatography instrument delivery pump according to claim 1, characterized in that: An adjustment panel (17) is provided on the surface of the first chromatograph pump body (1), and a liquid inlet (18) is installed on the surface of the first chromatograph pump body (1).

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