Cleaning pool for cleaning inner wall and outer wall of sampling needle

Abstract

The utility model relates to the technical field of sampling needle cleaning, in particular to a cleaning pool for cleaning the inner wall and the outer wall of a sampling needle, which comprises a main body and a lower plate, the lower surface of the main body is provided with a confluence groove for discharging cleaning liquid, and the lower plate is attached to the lower surface of the main body and covers and seals the confluence groove. The confluence groove communicates with the liquid discharging pump assembly and is used for discharging the cleaning liquid outwards. A plurality of needle holes are formed in the main body, the lower ends of the needle holes and the confluence groove form a communicating structure, and the aperture of the communicating structure is smaller than that of the needle holes; the upper end of the needle hole is connected with an overflow groove, and the overflow groove is provided with a plurality of overflow channels communicated with the confluence groove. When the sampling needle is matched with the needle hole of the main body for cleaning, the sampling needle is cleaned by directly injecting liquid through the sample adding pipe, the inner wall of the sampling needle is cleaned to the outer wall of the sampling needle, the liquid overflows and is discharged after cleaning, the structure is simple, cleaning is efficient, the cleaning effect is good, and therefore the higher sampling needle cleaning requirement can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling needle cleaning, in particular to a cleaning pool for cleaning the inner and outer walls of a sampling needle. Background Art

[0002] During the process of sample analysis or reagent collection, a sampling needle is used to accurately obtain a sample or reagent for subsequent operations and analysis. When there are requirements for processing multiple samples or collecting multiple reagents, multiple sampling needles are often used for separate collection and processing, and each sampling needle is independent and separated from each other. After use, to prevent cross-contamination, cleaning the sampling needle is an important part of the instrument operation process. Cross-contamination can interfere with the subsequent analysis results and cannot be ignored. The traditional method for cleaning the inner and outer walls of a sampling needle requires an external flow path and separate connection of cleaning liquid, with a complex flow path and high cost. Especially in solid-phase extraction operations, there are many reagents involved, so different reagents are used as the cleaning liquid for the corresponding sampling needles, and the entire cleaning operation is relatively more troublesome.

[0003] It can be seen that the current sampling needle cleaning scheme still has room for urgent improvement. It should be optimized to improve the cleaning efficiency of the sampling needle, simplify the operation process of sampling needle cleaning, and be able to clean different sampling needles separately to avoid cross-contamination. Therefore, a more reasonable technical solution needs to be proposed to solve the technical problems existing in the prior art. Summary of the Utility Model

[0004] To at least overcome one of the above-mentioned defects, the utility model proposes a cleaning pool for cleaning the inner and outer walls of a sampling needle. By setting a separate sampling needle cleaning structure in the cleaning pool, liquid addition cleaning is carried out using the liquid addition pipeline of the sampling needle. Each sampling needle can be cleaned separately without setting a cleaning liquid supply structure, and cross-contamination caused by the cleaning liquid can be avoided. This not only simplifies the operation but also improves the cleaning effect.

[0005] To achieve the above object, the cleaning pool disclosed by the utility model can adopt the following technical solutions:

[0006] A cleaning pool for cleaning the inner and outer walls of a sampling needle, comprising a main body and a lower plate. A confluence trough for discharging cleaning liquid is arranged on the lower surface of the main body. The lower plate fits the lower surface of the main body and covers and seals the confluence trough. The confluence trough is connected to a liquid discharge pump assembly and is used for discharging the cleaning liquid outwards. A plurality of needle holes are arranged on the main body. The lower end of the needle hole forms a communication structure with the confluence trough, and the aperture of the communication structure is smaller than the aperture of the needle hole. The upper end of the needle hole is connected to an overflow trough, and a plurality of overflow channels communicating with the confluence trough are arranged on the overflow trough.

[0007] The above-mentioned disclosed cleaning pool accommodates a sampling needle through a pinhole, and injects a cleaning liquid into the pinhole through the sampling needle. The cleaning liquid enters the pinhole, the liquid level rises, and finally overflows from the pinhole to the overflow tank; the cleaning liquid first cleans the inner wall of the sampling needle, and then cleans the outer wall of the sampling needle. The cleaning structure is simple, the cleaning process is fast and efficient, and it is convenient to quickly clean the sampling needle. When using the above-mentioned disclosed structure to clean the sampling needle, the sampling liquid can be directly injected through the internal sampling tube of the sampling needle, which is not only convenient for cleaning, but also simple and efficient.

[0008] Furthermore, the communication structure can be constructed in various forms, and its structure is not uniquely limited. Here, an optimization is carried out and one feasible option is proposed: the communication structure includes a communication groove, and the communication groove extends from the lower end of the pinhole to the confluence tank. When adopting such a scheme, since the aperture of the communication structure is smaller than the aperture of the pinhole, when the cleaning liquid is quickly injected into the pinhole, the cleaning liquid will first rise to the upper port of the pinhole and will not be directly discharged through the communication structure; when the external liquid discharge pump assembly is turned on, the cleaning liquid will be discharged from the pinhole through the communication structure.

[0009] Furthermore, when the cleaning liquid in the pinhole is full, the cleaning liquid overflows from the upper port of the pinhole, and the cleaning liquid can be guided to the overflow tank through a corresponding guiding structure. The specific guiding method is not uniquely limited. Here, an optimization is carried out and one feasible option is proposed: an outflow opening is formed at the upper port of the pinhole, and the outflow opening is used for the cleaning liquid to overflow outward into the overflow tank. When adopting such a scheme, the guiding effect of the outflow opening can avoid the irregular flow of the cleaning liquid, so as to better clean the sampling needle.

[0010] Furthermore, in order to assist in realizing the connection setting of the sampling needle, it can be assisted and fixed through various structures. Here, an optimization is carried out and one feasible option is proposed: a needle seat is arranged on the upper end surface of the main body, and a number of fitting holes for cooperating with the sampling needle are formed on the needle seat. The fitting holes correspond to the pinholes one by one, and an opening groove is also arranged on the needle seat corresponding to the fitting holes one by one. When adopting such a scheme, an auxiliary fixing member can be arranged at the fitting hole to help fix the sampling needle, and the opening groove can help to connect the pinhole with the external atmosphere, which is convenient for cooperating with the liquid discharge pump assembly to discharge waste.

[0011] Furthermore, the needle seat can be attached to the upper end surface of the main body, or can be installed in other forms, and its structure is not uniquely limited. Here, an optimization is carried out and one feasible option is proposed: a sunken groove is formed on the upper end surface of the main body, and the overflow tank is located at the bottom of the sunken groove. When adopting such a scheme, the width of the sunken groove is greater than the width of the overflow tank, and a part of the hole body of the overflow channel arranged at the overflow tank is located inside the overflow tank, and the other part of the hole body is located outside the overflow tank.

[0012] Further, the setting method of the pinhole is not uniquely limited. The position of the pinhole can be adjusted to facilitate its connection to the atmosphere, which is convenient for subsequent discharge of waste liquid. Specifically, one feasible option is optimized and proposed here: the pinhole extends to the sinking groove, and a part of the pinhole body is located inside the sinking groove, and the other part of the pinhole body is located outside the sinking groove. When such a scheme is adopted, the pinhole body located outside the sinking groove can communicate with the atmosphere, and gas can enter through this part of the pinhole body during subsequent discharge of waste liquid.

[0013] Further, in order to maintain the sealing between the main body and the lower plate and avoid leakage of waste liquid, one feasible option is optimized and proposed here: a sealing member is provided between the main body and the lower plate, and the sealing member is used to seal the mating surface between the main body and the lower plate. When such a scheme is adopted, the sealing member can be made of a flexible material.

[0014] Furthermore, the sealing structure between the main body and the lower plate is optimized, and one feasible option is proposed here: a sealing groove is formed between the main body and the lower plate, and the sealing member includes a sealing ring and the sealing ring is arranged in the sealing groove. When such a scheme is adopted, the sealing ring is a rubber ring, and the cross-section of the sealing groove is an arc surface.

[0015] Further, when discharging waste liquid, it can be discharged through the lower plate or through the main body. One feasible option is optimized and proposed here: the lower plate is provided with a waste discharge hole communicating with the confluence groove, and a waste discharge pipe is arranged at the waste discharge hole and the waste discharge pipe is connected and matched with the liquid discharge pump assembly. When such a scheme is adopted, the waste discharge hole extends from the upper surface of the lower plate to the lower surface, and a plurality of upper grooves are further provided on the lower surface of the lower plate, and the waste discharge pipe can be arranged in the upper grooves in a matching manner.

[0016] Further, the connection method between the main body and the lower plate is not uniquely limited. One feasible option is optimized and proposed here: a plurality of connection holes are correspondingly arranged between the main body and the lower plate, and fasteners are arranged at the connection holes for connection. When such a scheme is adopted, bolts can be used as fasteners.

[0017] Compared with the prior art, some beneficial effects of the disclosed technical solution of the present utility model include:

[0018] When the sampling needle is cleaned in cooperation with the pinhole of the main body, direct liquid injection is used for cleaning through the sample addition tube, and the cleaning is carried out from the inner wall to the outer wall of the sampling needle. After cleaning, the liquid overflows and discharges. The structure is simple, the cleaning is efficient, and the cleaning effect is good. Therefore, it can meet higher sampling needle cleaning requirements. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the cleaning tank.

[0021] Figure 2 It is a schematic diagram of the overall structure of the main body of the cleaning tank.

[0022] Figure 3 It is a schematic top view structure diagram of the cleaning tank.

[0023] Figure 4 It is Figure 2 The sectional view structure diagram of the A-A section in

[0024] Figure 5 It is Figure 2 The sectional view structure diagram of the B-B section in

[0025] In the above accompanying drawings, the meanings of the respective marks are as follows:

[0026] 1. Lower plate; 101. Sealing groove; 2. Main body; 201. Pinhole; 202. Sinking groove; 203. Overflow channel; 204. Overflow tank; 205. Confluence tank; 206. Connecting structure; 207. Waste discharge hole; 3. Sampling needle; 4. Needle seat; 5. Waste discharge pipe; 6. Liquid discharge pump assembly; 7. Sealing member. Specific embodiments

[0027] The present utility model will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0028] Aiming at the deficiencies existing in the prior art sampling needle cleaning solution, the following embodiments are optimized and the defects of the prior art are overcome.

[0029] Embodiment

[0030] Such as Figures 1 to 5As shown in the figure, this embodiment provides a cleaning pool for cleaning the inner and outer walls of a sampling needle, which includes a main body 2 and a lower plate 1. A confluence groove 205 for discharging cleaning liquid is arranged on the lower surface of the main body 2. The lower plate 1 fits the lower surface of the main body 2 and covers and seals the confluence groove 205. The confluence groove 205 is connected to a liquid discharge pump assembly 6 and is used to discharge the cleaning liquid outwards. A plurality of needle holes 201 are arranged on the main body 2. The lower end of the needle hole 201 forms a communication structure 206 with the confluence groove 205, and the aperture of the communication structure 206 is smaller than that of the needle hole 201. The upper end of the needle hole 201 is connected to an overflow groove 204, and a plurality of overflow channels 203 connecting the confluence groove 205 are arranged on the overflow groove 204.

[0031] In the cleaning pool disclosed in this embodiment, the sampling needle 3 is accommodated through the needle hole 201, and the cleaning liquid is injected into the needle hole 201 through the sampling needle 3. The cleaning liquid enters the needle hole 201, the liquid level rises, and finally overflows from the needle hole 201 to the overflow groove 204. The cleaning liquid first cleans the inner wall of the sampling needle 3, and then cleans the outer wall of the sampling needle 3. The cleaning structure is simple, the cleaning process is fast and efficient, and it is convenient to quickly clean the sampling needle 3. When cleaning the sampling needle 3 by using the above disclosed structure, the sample addition liquid can be directly injected through the internal sample addition tube of the sampling needle 3, which is not only convenient for cleaning, but also simple and efficient.

[0032] The communication structure 206 can be constructed in various forms, and its structure is not uniquely limited. This embodiment is optimized and one feasible option is adopted: such as Figure 4 、 Figure 5 As shown in the figure, the communication structure 206 includes a communication groove, and the communication groove extends from the lower end of the needle hole 201 to the confluence groove 205. When adopting such a scheme, since the aperture of the communication structure 206 is smaller than that of the needle hole 201, when the cleaning liquid is quickly injected into the needle hole 201, the cleaning liquid will first rise to the upper port of the needle hole 201 and will not be directly discharged through the communication structure 206. When the external liquid discharge pump assembly 6 is turned on, the cleaning liquid will be discharged from the needle hole 201 through the communication structure 206.

[0033] When the cleaning liquid in the needle hole 201 is full, the cleaning liquid overflows from the upper port of the needle hole 201, and the cleaning liquid can be guided to the overflow groove 204 through a corresponding guiding structure. The specific guiding method is not uniquely limited. This embodiment is optimized and one feasible option is adopted: such as Figure 4 、 Figure 5 As shown in the figure, an outflow opening is formed at the upper port of the needle hole 201, and the outflow opening is used for the cleaning liquid to overflow outwards and enter the overflow groove 204. When adopting such a scheme, the guiding effect of the outflow opening can avoid the irregular flow of the cleaning liquid, so as to better clean the sampling needle 3.

[0034] To assist in the connection setting of the sampling needle 3, it can be assisted and fixed through various structures. In this embodiment, optimization is carried out and one feasible option is adopted: a needle seat 4 is provided on the upper end surface of the main body 2, and a number of mating holes for mating with the sampling needle 3 are formed on the needle seat 4. The mating holes correspond to the needle holes 201 one by one, and opening grooves are also provided on the needle seat 4 corresponding to the mating holes one by one. When adopting such a scheme, auxiliary fixing members can be provided at the mating holes to help fix the sampling needle 3, and the needle holes 201 are communicated with the atmosphere through the opening grooves, which is convenient for cooperating with the liquid discharge pump assembly 6 to discharge waste liquid.

[0035] The needle seat 4 can be attached to the upper end surface of the main body 2, or can be installed in other forms, and its structure is not uniquely limited. In this embodiment, optimization is carried out and one feasible option is adopted: as Figure 2 、 Figure 3 shown, a sunken groove 202 is formed on the upper end surface of the main body 2, and the overflow groove 204 is located at the bottom of the sunken groove 202. When adopting such a scheme, the width of the sunken groove 202 is greater than the width of the overflow groove 204, and a part of the hole body of the overflow channel 203 provided at the overflow groove 204 is located inside the overflow groove 204, and the other part of the hole body is located outside the overflow groove 204.

[0036] The setting method of the needle hole 201 is not uniquely limited either. The position of the needle hole 201 can be adjusted to facilitate its communication with the atmosphere, which is convenient for subsequent discharge of waste liquid. Specifically, in this embodiment, optimization is carried out and one feasible option is adopted: the needle hole 201 extends to the sunken groove 202, and a part of the hole body of the needle hole 201 is located inside the sunken groove 202, and the other part of the hole body is located outside the sunken groove 202. When adopting such a scheme, the hole body of the needle hole 201 located outside the sunken groove 202 can communicate with the atmosphere, and gas can enter from this part of the hole body during subsequent discharge of waste liquid.

[0037] In order to maintain the sealing between the main body 2 and the lower plate, and avoid the leakage of waste liquid, in this embodiment, optimization is carried out and one feasible option is adopted: a sealing member 7 is provided between the main body 2 and the lower plate 1, and the sealing member 7 is used to seal the mating surface between the main body 2 and the lower plate 1. When adopting such a scheme, the sealing member 7 can be made of a flexible material.

[0038] Optimizing the sealing structure between the main body 2 and the lower plate 1, in this embodiment, one feasible option is adopted: a sealing groove 101 is formed between the main body 2 and the lower plate 1, and the sealing member 7 includes a sealing ring and the sealing ring is arranged in the sealing groove 101. When adopting such a scheme, the sealing ring is made of a rubber ring, and the cross-section of the sealing groove 101 is an arc surface.

[0039] When discharging the waste liquid, it can be discharged through the lower plate 1 or through the main body 2. This embodiment is optimized and one feasible option is adopted: as Figure 5 shown, the lower plate 1 is provided with a waste discharge hole 207 communicating with the confluence tank 205. A waste discharge pipe 5 is provided at the waste discharge hole 207, and the waste discharge pipe 5 is connected and cooperated with the liquid discharge pump assembly 6. When adopting such a scheme, the waste discharge hole 207 extends from the upper surface to the lower surface of the lower plate 1, and a plurality of upper grooves are further provided on the lower surface of the lower plate 1. The waste discharge pipe 5 can be cooperatively arranged in the upper grooves.

[0040] The connection manner between the main body 2 and the lower plate 1 is not uniquely limited. This embodiment is optimized and one feasible option is adopted: a plurality of connection holes are correspondingly provided between the main body 2 and the lower plate 1, and fasteners are provided at the connection holes for connection. When adopting such a scheme, bolts can be used as the fasteners.

[0041] The above are the implementation manners listed in this embodiment, but this embodiment is not limited to the above optional implementation manners. Those skilled in the art can obtain other various implementation manners by arbitrarily combining the above manners. Anyone can obtain other various forms of implementation manners under the inspiration of this embodiment. The above specific implementation manners should not be understood as limiting the protection scope of this embodiment. The protection scope of this embodiment should be defined by the claims.

Claims

1. A cleaning pool for cleaning the inner and outer walls of a sampling needle, characterized in that: The invention comprises a main body (2) and a lower plate (1), wherein the lower surface of the main body (2) is provided with a confluence groove (205) for discharging cleaning liquid, the lower plate (1) is fitted to the lower surface of the main body (2) and covers and seals the confluence groove (205), the confluence groove (205) is connected to a liquid discharge pump assembly (6) and is used to discharge cleaning liquid outward; a plurality of pinholes (201) are provided on the main body (2), the lower end of the pinhole (201) forms a connecting structure (206) with the confluence groove (205), and the aperture of the connecting structure (206) is smaller than the aperture of the pinhole (201); the upper end of the pinhole (201) is connected to an overflow groove (204), and the overflow groove (204) is provided with a plurality of overflow channels (203) connected to the confluence groove (205).

2. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1, characterized in that: The communication structure (206) comprises a communication groove, which extends from the lower end of the needle hole (201) to the confluence groove (205).

3. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1, characterized in that: The upper end of the needle hole (201) forms an outflow opening, and the outflow opening is used for the cleaning liquid to overflow outwards and enter the overflow groove (204).

4. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1 or 3, characterized in that: The upper end surface of the main body (2) is provided with a needle seat (4), and a plurality of matching holes for matching with the sampling needle (3) are formed on the needle seat (4), and the matching holes correspond to the needle holes (201) one by one. The needle seat (4) is also provided with opening grooves corresponding to the matching holes one by one.

5. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 4, characterized in that: A sinking groove (202) is formed on the upper end surface of the main body (2), and the overflow groove (204) is located at the bottom of the sinking groove (202).

6. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 5, characterized in that: The pinhole (201) extends to the sinking groove (202), and a part of the pinhole (201) is located inside the sinking groove (202), and another part of the pinhole is located outside the sinking groove (202).

7. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1, characterized in that: A sealing member (7) is provided between the main body (2) and the lower plate (1), and the sealing member (7) is used to seal the matching surfaces of the main body (2) and the lower plate (1).

8. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 7, characterized in that: A sealing groove (101) is formed between the main body (2) and the lower plate (1), and the sealing member (7) comprises a sealing ring which is arranged in the sealing groove (101).

9. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1, characterized in that: The lower plate (1) is provided with a waste discharge hole (207) connected to the confluence groove (205), and a waste discharge pipe (5) is provided at the waste discharge hole (207), and the waste discharge pipe (5) is connected and matched with the drainage pump assembly (6).

10. The cleaning pool for cleaning the inner and outer walls of the sampling needle according to claim 1, characterized in that: A plurality of connection holes are correspondingly arranged between the main body (2) and the lower plate (1), and fasteners are arranged at the connection holes for connection.

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