Multi-channel rotary column position valve

Abstract

The utility model discloses a multi-channel rotary column position valve, and relates to the technical field of column position valves. The multi-channel rotary column position valve comprises a valve element rotor body and an external stator, a circular groove and a strip-shaped groove with the tail ends communicated are formed in the outer wall of the valve element rotor body, and a counter bore A and a counter bore B are formed in the positions, close to the circular groove with the tail ends communicated, of the outer wall of the valve element rotor body. A valve rotor internal passing groove is formed in the outer wall of the valve element rotor body, a gap is formed between the outer walls of the two circular grooves with the tail ends communicated, the valve rotor internal passing groove is formed in the gap, the two circular grooves with the tail ends communicated are communicated with the strip-shaped groove, and the counter bore A and the counter bore B are formed in the two ends of the valve rotor internal passing groove respectively. According to the valve core rotor, through grooves and the like in the valve rotor are formed in the surface of the valve core rotor main body, so that the operation is further optimized, the dead volume is reduced, industrial production is facilitated, the production efficiency is improved, and the valve core rotor has practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of column valves, in particular to a multi-channel rotary column valve. Background Art

[0002] Chromatographic analysis and separation technology is widely used in fields such as medicine and healthcare, disease monitoring, livestock and poultry quarantine, food hygiene and safety, environmental monitoring, and other industrial and agricultural quality testing. It is most commonly used in various preparative purification applications. The column valve is a key component in the liquid column of a chromatographic instrument. Especially in the preparative purification field, the column valve is used to deliver samples into the high-pressure mobile phase of the chromatography column, flush different components, or switch between multiple separation systems. As a crucial component of chromatographic instrumentation, the column valve's design and manufacturing precision, degree of automation, and reliability directly impact experimental and production results.

[0003] Existing column valves cannot be backflushed to remove contaminants during industrial production, or cannot be connected to multiple chromatographic columns at the same time, and the dead volume inside the valve core is large. Therefore, this application proposes a multi-channel rotary column valve to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-channel rotary column valve, which solves the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-channel rotary column position valve, comprising a valve core rotor body and an external stator, the external stator being arranged on the outside of the valve core rotor body, the outer wall of the external stator being provided with an external stator countersunk hole, the outer wall of the valve core rotor body being provided with a circular groove and a strip groove with two ends connected, the outer wall of the valve core rotor body being provided with countersunk holes A and countersunk holes B near the two circular grooves connected at the ends, the outer wall of the valve core rotor body being provided with a valve rotor internal through groove, and a gap being formed between the outer walls of the two circular grooves connected at the ends for the opening of the valve rotor internal through groove.

[0006] Preferably, the circular groove and the strip groove with two communicating ends are connected.

[0007] Preferably, the countersunk hole A and the countersunk hole B are respectively arranged at both ends of the internal slot of the valve rotor. The countersunk hole A and the countersunk hole B are symmetrically distributed at both ends of the internal slot of the valve rotor and overlap and communicate with the external stator countersunk hole.

[0008] Preferably, the outer circular groove of the two circular grooves communicating with each other at the ends always overlaps and communicates with the external stator countersunk hole, and the strip groove always overlaps and communicates with the external stator countersunk hole.

[0009] Compared with related technologies, the multi-channel rotary column valve provided by the present invention has the following beneficial effects:

[0010] 1. The utility model provides a multi-channel rotary column valve. By opening the internal grooves of the valve rotor on the surface of the valve core rotor body, multiple chromatographic columns can be connected at the same time to perform backflushing to remove pollutants, further optimizing the operation, facilitating industrial production, improving production efficiency, and having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the valve core rotor structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the first working state of the utility model;

[0013] Figure 3 This is a schematic diagram of the second working state of the utility model;

[0014] Figure 4 This is a schematic diagram of the third working state of the present utility model;

[0015] Figure 5 This is a schematic diagram of the fourth working state of the present utility model;

[0016] Figure 6 This is a schematic diagram of the fifth working state of the present utility model;

[0017] Figure 7 This is a schematic diagram of the sixth working state of the present utility model;

[0018] Figure 8 This is a schematic diagram of the seventh working state of the present utility model;

[0019] Figure 9 This is a schematic diagram of the eighth working state of the present utility model;

[0020] Figure 10 This is a schematic diagram of the ninth working state of the present utility model;

[0021] Figure 11 This is a schematic diagram of the tenth working state of the present utility model;

[0022] Figure 12 This is a schematic diagram of the eleventh working state of the present utility model.

[0023] In the figure: 1. Valve core rotor body; 2. Circular groove with two connected ends; 3. Strip groove; 4. Countersunk hole A; 5. Countersunk hole B; 6. Internal groove of valve rotor; 7. External stator; 8. External stator countersunk hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example 1:

[0026] See also Figures 1-12 The utility model provides a technical solution: a multi-channel rotary column position valve, including a valve core rotor body 1 and an external stator 7, the external stator is arranged on the outside of the valve core rotor body 1, and the outer wall of the external stator is provided with an external stator countersunk hole 8, the outer wall of the valve core rotor body 1 is provided with a circular groove 2 and a strip groove 3 with two ends connected, the outer wall of the valve core rotor body 1 is provided with a countersunk hole A4 and a countersunk hole B5 near the circular grooves 2 with two ends connected, the outer wall of the valve core rotor body 1 is provided with a valve rotor internal through groove 6, and a gap is formed between the outer walls of the two circular grooves 2 with two ends connected for the opening of the valve rotor internal through groove 6.

[0027] Among them, the circular groove 2 and the strip groove 3 with two communicating ends are connected.

[0028] The countersunk holes A4 and B5 are respectively arranged at both ends of the internal slot 6 of the valve rotor. The countersunk holes A4 and B5 are symmetrically distributed at both ends of the internal slot 6 of the valve rotor and overlap and communicate with the external stator countersunk holes.

[0029] Among them, the outer circular groove of the two circular grooves 2 with connected ends always overlaps and communicates with the external stator countersunk hole 8, and the strip groove 3 always overlaps and communicates with the external stator countersunk hole.

[0030] In this embodiment, the valve rotor internal groove 6 is formed on the surface of the valve core rotor body 1, leaving space for the valve rotor internal groove 6 in the closed circular groove 2, which is connected at both ends. The formation of the valve rotor internal groove 6 on the surface of the valve core rotor body 1 facilitates industrial production.

[0031] Example 2:

[0032] See also Figure 2-Figure 12 As shown, based on the first embodiment, the present invention provides a technical solution: Figure 2-Figure 12 This is a schematic diagram of the working state of this solution, in which a control unit and a chromatography column mechanism are provided outside the valve core rotor body 1.

[0033] Working Principle: During use, the valve rotor internal slot 6 is formed on the surface of the valve core rotor body 1, and the circular groove 2, which is closed at both ends and communicates with each other, leaves space for the valve rotor internal slot 6. The internal slot 6 of the valve rotor is formed on the surface of the valve core rotor body 1, which facilitates industrial production.

[0034] 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 multi-channel rotary column valve, comprising a valve core rotor body (1) and an external stator (7), characterized in that: The external stator is arranged on the outside of the valve core rotor body (1), and the outer wall of the external stator is provided with an external stator countersunk hole. The outer wall of the valve core rotor body (1) is provided with two circular grooves (2) and a strip groove (3) that are connected at two ends. The outer wall of the valve core rotor body (1) is provided with a countersunk hole A (4) and a countersunk hole B (5) near the two circular grooves (2) that are connected at two ends. The outer wall of the valve core rotor body (1) is provided with a valve rotor internal groove (6), and a gap is formed between the outer walls of the two circular grooves (2) that are connected at two ends for the valve rotor internal groove (6) to be opened.

2. A multi-channel rotary column valve according to claim 1, characterized in that: The circular groove (2) and the strip groove (3) with two communicating ends are connected.

3. The multi-channel rotary column valve according to claim 1, characterized in that: The countersunk hole A (4) and the countersunk hole B (5) are respectively arranged at the two ends of the internal slot (6) of the valve rotor. The countersunk hole A (4) and the countersunk hole B (5) are symmetrically distributed at the two ends of the internal slot (6) of the valve rotor and overlap and communicate with the external stator countersunk hole.

4. The multi-channel rotary column valve according to claim 1, characterized in that: The outer circular groove of the two circular grooves (2) communicating at the ends always overlaps and communicates with the external stator countersunk hole (8), and the strip-shaped groove (3) always overlaps and communicates with the external stator countersunk hole.

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