Anti-cheating cover body, sampling bottle and method

Abstract

The invention relates to fluid sampling, and particularly provides an anti-cheating cover body, a sampling bottle and a method, the anti-cheating cover body comprises a shell and an anti-theft ring, and the inner wall of the shell is provided with a first connecting part; the anti-cheating cover body further comprises an annular isolation part which is arranged on the inner wall of the shell. The fluid valve is arranged on the isolation part and used for controlling whether the two sides of the isolation part are communicated or not; the plurality of elastic pieces are respectively connected with the moving piece of the fluid valve; the multiple limiting grooves are formed in the inner wall of the shell, and the ends of the elastic pieces are arranged in the limiting grooves. The limiting groove comprises a first part, a second part and a third part which are communicated in sequence; when the end part moves upwards and / or downwards, the end part rotates anticlockwise, the deformation amount of the elastic piece is increased, and when the end part rotates clockwise in the third part, the deformation amount is decreased; and the blocking part is used for blocking the downward movement of the end part in the third part. The method has the advantages of good anti-cheating effect and the like, and is applied to sampling of environmental protection monitoring.

Description

Technical Field

[0001] The invention relates to fluid sampling, and in particular to an anti-cheating cover, a sampling bottle and a method. Background Art

[0002] The concept of sewage epidemiology was first proposed by the United States in 2001. Its principle is based on the fact that after a drug is taken by the body, the unabsorbed part and the metabolites of the active ingredients will eventually enter the sewage through the sewage system with urine and feces. Sewage epidemiology was first applied to the assessment of cocaine abuse in Italy in 2005. Subsequently, Europe and the United States gradually applied sewage epidemiological analysis methods to the monitoring of drug abuse, including the abuse monitoring of drugs such as cocaine, heroin, methamphetamine and marijuana.

[0003] Recently, many cities in my country have carried out drug monitoring methods based on sewage epidemiology. This method mainly measures the concentration of drugs and their metabolic targets (DTR) in the inlet and outlet of municipal sewage. Through the monitoring of drug conditions in sewage, data support can be provided for the formulation of drug control policies and the implementation of targeted crackdowns on drug-related crimes.

[0004] In sewage sampling, in order to maintain the authenticity of the sampled sewage, the sampling bottle needs to have an anti-cheating function, that is, it cannot be opened normally after sampling. Summary of the invention

[0005] In order to solve the deficiencies in the above-mentioned prior art solutions, the present invention provides an anti-cheating cover.

[0006] The objective of the present invention is achieved through the following technical solutions: An anti-cheating cover body comprises an outer shell and an anti-theft ring, wherein the inner wall of the outer shell has a first connecting portion; the anti-cheating cover body further comprises: An isolating portion, the isolating portion being annular and arranged on the inner wall of the shell; A fluid valve, the fluid valve is arranged on the isolation part and is used to control whether the two sides of the isolation part are connected; An elastic member, wherein the plurality of elastic members are respectively connected to the moving member of the fluid valve; A limiting groove, wherein a plurality of limiting grooves are arranged on the inner wall of the shell, and the end of the elastic member is arranged in the limiting groove; the limiting groove comprises a first part, a second part and a third part which are connected in sequence, when the moving member moves downward, the two sides of the isolation part are connected, and the end moves downward in the first part, and when the moving member moves upward, the end enters the second part from the first part and moves upward, the deformation amount of the elastic member increases, and finally the two sides of the isolation part are isolated; when the end moves upward and / or downward, the projection of the trajectory of the end on a plane perpendicular to the central axis of the shell rotates counterclockwise around the central axis, and the projection of the trajectory of the end in the third part on a plane perpendicular to the central axis of the shell rotates clockwise around the central axis, and the deformation amount of the elastic member decreases; The blocking portion is used to block the end portion in the third portion from moving downward.

[0007] Another object of the present invention is to provide a sampling bottle using the above-mentioned cover, and the object of the invention is achieved through the following technical solutions: The sampling bottle comprises a bottle body and a bottle cap, wherein the bottle cap is fixed at the open end of the bottle body, and the outer wall of the open end has a second connecting portion; the bottle cap adopts the anti-cheating cover body of the present invention, the first connecting portion and the second connecting portion match, and the anti-theft ring is self-locking.

[0008] Another object of the present invention is to provide a sampling method, which is achieved through the following technical solutions: The sampling method includes the following steps: (S1) providing the above-mentioned sampling bottle, and pressing down the moving part of the fluid valve, so that the two sides of the isolation part are connected, and the fluid passes through the isolation part and enters the bottle body; When the moving member moves downward, the end of the elastic member moves downward in the first part of the limiting groove and reaches the lowest end; (S2) the moving member moves upward, and at the same time, the end portion moves upward in the second portion of the limiting groove, the projection of the trajectory of the end portion on a plane perpendicular to the central axis of the housing rotates counterclockwise around the central axis, and the deformation of the elastic member increases until the fluid valve closes the isolation portion; (S3) The end portion enters the third portion from the second portion, and the projection of the trajectory of the end portion in the third portion on a plane perpendicular to the central axis of the shell rotates clockwise around the central axis, and the deformation of the elastic member decreases; when the external environment pushes the moving member, the end portion is blocked, preventing the moving member from moving downward.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. It has anti-cheating function; By utilizing the design of the elastic member and the limiting groove, when the movable member moves up and down, the end of the elastic member moves in multiple parts of the limiting groove and deforms, and the end finally stops in the third part. When the movable member is pushed, the end in the third part is blocked, preventing the end and the movable member from moving down, preventing the fluid valve from being opened again, and realizing the anti-cheating function; 2. Simple structure and good reliability; The moving parts, positioning grooves and positioning parts are all mature components with simple structure and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings: Figure 1-Figure 2 is a schematic structural diagram of an anti-cheating cover according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a housing according to an embodiment of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the anti-cheating cover in different states; Figure 5-Figure 8 Schematic diagram of the position of the limit groove and the end of the elastic member under different states; Fig. 9 Schematic diagram of the structure of a sampling bottle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0011] Figure 1-Figure 9 The following description describes optional specific embodiments of the present invention to teach those skilled in the art how to implement and reproduce the present invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will understand that variations or replacements derived from these specific embodiments will be within the scope of the present invention. Those skilled in the art will understand that the following features can be combined in various ways to form multiple variations of the present invention. Thus, the present invention is not limited to the following optional specific embodiments, but is only limited by the claims and their equivalents.

[0012] Example 1

[0013] The anti-cheating cover body of embodiment 1 of the present invention is as follows Figure 1-Figure 2 As shown, the anti-cheating cover 200 includes: The outer shell 101 and the anti-theft ring 11 are connected up and down, and the inner wall of the outer shell 101 has a first connecting part, such as an internal thread.

[0014] like Figure 3 As shown, the annular isolating portion 100 is arranged on the inner wall of the housing 101 .

[0015] A fluid valve is provided on the isolation portion 100 and is used to control whether two sides of the isolation portion 100 are connected.

[0016] A plurality of elastic members 105 are respectively connected to the moving members 104 of the fluid valve.

[0017] like Figure 3 As shown, a plurality of limit grooves 210 are arranged on the inner wall of the shell 101, and the end of the elastic member 105 is arranged in the limit groove 210; the limit groove 210 includes a first part 211, a second part 212 and a third part 213 which are connected in sequence, and when the movable member 104 moves downward, the two sides of the isolation part 100 are connected, and the end moves downward in the first part 211.

[0018] When the movable member 104 moves upward, the end portion enters the second portion 212 from the first portion 211 and moves upward, the deformation of the elastic member 105 increases, and finally the two sides of the isolation portion 100 are isolated; while the end portion moves upward and / or downward, the projection of the trajectory of the end portion on a plane perpendicular to the central axis of the outer shell 101 rotates counterclockwise around the central axis, and the projection of the trajectory of the end portion in the third portion 213 on a plane perpendicular to the central axis of the outer shell 101 rotates clockwise around the central axis, and the deformation of the elastic member 105 decreases.

[0019] The blocking portion is used to block the downward movement of the end portion in the third portion 213, that is, to stop the downward movement of the moving member 104, thereby preventing the fluid valve from being opened again and eliminating sample cheating.

[0020] In order to realize the conduction and closing functions, further, as Figure 3-Figure 4 As shown, the fluid valve also includes: A plurality of guide grooves 107 are disposed on the inner wall of the housing 101 and extend in a direction parallel to the central axis of the housing 101 or in a spiral shape.

[0021] The moving member 104 passes through the isolation portion 100 , and the upper end 109 and the lower end 108 are respectively located at two sides of the isolation portion 100 ; the sealing member 102 is disposed between the isolation portion 100 and the lower end 108 .

[0022] One end of the plurality of guide members 106 is disposed in the guide groove 107 , and the other end is connected to the moving member 104 . The spring 103 is disposed between the isolation portion 100 and the guide member 106 .

[0023] In order to prevent the elastic member from being moved to achieve the anti-cheating function, further, as Figure 4As shown, the elastic member 105 is disposed between the guide member 106 and the isolation portion 100 , and is blocked by the upper end 106 of the moving member 104 .

[0024] In order to connect the two sides of the isolation part 100 as needed, further, as Figure 1 As shown, the moving member 104 is a cylindrical structure with an open upper end 109 and a closed lower end 108 , and a side wall having a through hole. Alternatively, the moving member 104 is a columnar structure with a gap between the side wall and the isolation portion 100 .

[0025] In order to prevent the end portion at the intersection of the first portion 311 and the second portion 312 from returning to the first portion 311 when moving upward, further, as Figure 4 As shown, the top wall 215 and the bottom wall 216 at the intersection are respectively arranged in a counterclockwise direction.

[0026] In order to prevent the inner end of the third part 213 from moving downward, the blocking part further adopts a groove 214, which is arranged in the third part 213 and is located at the lower side of the end; or, the third part arranged horizontally or inclined downward is used as the blocking part.

[0027] A sampling bottle according to an embodiment of the present invention, such as Fig. 9 As shown, including: The outer wall of the opening end of the bottle body 201 has a second connecting portion; The bottle cap 200 adopts the anti-cheating cover body 200 of this embodiment, and the bottle cap 200 is fixed to the opening end by matching the first connecting part and the second connecting part.

[0028] The sampling method of the embodiment of the present invention comprises the following steps: (S1) Provide the sampling bottle of this embodiment, and press downward the moving part 104 of the fluid valve, so that the two sides of the isolation part 100 are connected, and the fluid passes through the isolation part 100 and enters the bottle body 201; When the moving member 104 moves downward, the end of the elastic member 105 moves downward in the first portion 211 of the limiting groove 210 and reaches the lowest end. Figure 6 As shown; (S2) The moving member 104 moves upward, and at the same time, the end portion moves upward in the second portion 212 of the limiting groove 210. The projection of the trajectory of the end portion on a plane perpendicular to the central axis of the housing 101 rotates counterclockwise around the central axis, and the deformation of the elastic member 105 increases until the fluid valve closes the isolation portion 100. Figure 7 shown.

[0029] (S3) The end portion enters the third portion 213 from the second portion 212, and the projection of the trajectory of the end portion in the third portion 213 on a plane perpendicular to the central axis of the housing 101 rotates clockwise around the central axis, and the deformation of the elastic member 105 decreases, as shown in FIG. Figure 8 shown.

[0030] When the outside pushes the moving member 104, the end is blocked by the blocking portion, preventing the moving member 104 from moving downward, thereby preventing the fluid valve from being opened again.

[0031] Example 2

[0032] An example of application of the anti-cheating cover, sampling bottle and method according to Example 1 of the present invention in sewage sampling.

[0033] In this application example, Fig. 9 As shown, the anti-cheating cover 200 is fixed at the open end of the bottle body 201, and the internal thread of the inner wall of the cover 200 is engaged with the external thread of the outer wall of the open end, thereby closing the open end.

[0034] like Figure 1-Figure 2 As shown, the housing 101 and the anti-theft ring 11 are connected up and down.

[0035] like Figure 3 As shown, the annular isolating portion 100 is fixed to the inner wall of the housing 101. Two limiting grooves 210 are respectively arranged between adjacent guide grooves 107, including a first portion 211, a second portion 212 and a third portion 213 which are connected in sequence. The first portion 211 and the second portion 212 are both inclined (relative to the horizontal plane) to form a V shape. The top wall 215 and the bottom wall 216 at the intersection are respectively arranged in the counterclockwise direction, as shown in FIG. Figure 6 The third part 213 is arranged horizontally, and a groove 214 is arranged at the lower side of the end thereof as a blocking part.

[0036] The outer diameter of the hollow moving member 104 is equal to the inner diameter of the isolating portion 100. The upper end 109 of the moving member 104 is open, and the outer wall has four convex guide members 106. The side wall of the moving member 104 is hollowed out, and the lower end 108 is closed. Four guide grooves 107 are arranged on the inner wall of the shell 101 and extend in a direction parallel to the central axis of the shell 101. One end of the guide member 106 is arranged in the guide groove 107, so that the moving member 104 can only translate in a direction parallel to the central axis of the shell 101.

[0037] like Figure 4As shown, the moving member 104 passes through the isolation part 100, and the sealing member 102 is an O-ring, which is arranged between the lower end 108 and the isolation part 100. The spring 103 is arranged on the upper side of the isolation part 100 and is between the elastic member 105 and the isolation part 100. The elastic member 105 is a spring rod, which passes through the moving member 104 and is blocked by the upper end 109.

[0038] The sampling method of the embodiment of the present invention comprises the following steps: (S1) The end of the elastic member 105 is at the highest point in the first portion 211, such as Figure 5 shown.

[0039] The upper end 109 of the moving member 104 of the fluid valve is pressed downward, and the guide member 106 moves vertically downward along the guide groove 107, the spring 103 is compressed, and at the same time, the end of the elastic member 105 moves obliquely downward along the first portion 211 and rotates counterclockwise (the projection of the trajectory of the end on the plane perpendicular to the central axis of the housing 101 rotates counterclockwise around the central axis), the deformation of the end gradually decreases, the fluid valve opens, and the sewage passes through the moving member 104 and the isolation portion 100 and enters the bottle body 201 until the end reaches the bottom wall 216 of the intersection, as shown in FIG. Figure 6 As shown, at this time, the deformation of the elastic member 101 is zero.

[0040] (S2) The external force is removed. Under the push of the elastic force of the spring 103, the movable member 104 moves vertically upward, and the guide member 106 moves vertically upward along the guide groove 107. At the same time, (based on the position design of the top wall 215 and the bottom wall 216 at the intersection, the end portion will not return to the first part 211, but will enter the second part 212) the end portion enters the second part 212 from the first part 211 in the limiting groove 210, and moves upward obliquely in the second part 212, and rotates counterclockwise (same as the counterclockwise rotation in the first part 211), and the deformation amount gradually increases until the sealing member 102 is squeezed between the lower end 108 and the isolation part 100, and the fluid valve closes the isolation part 100, as shown in FIG. Figure 7 As shown, at this time, the deformation of the end is the largest; (S3) The end portion enters the third portion 213 and rotates clockwise (the projection of the trajectory of the end portion on a plane perpendicular to the central axis of the housing 101 rotates clockwise around the central axis), the deformation amount decreases, and finally is blocked by the end of the third portion 213, as shown in FIG. Figure 8 As shown; When the external environment pushes the moving member 104, the end is blocked by the groove 214, preventing the moving member 104 from moving downward and preventing the fluid valve from being opened again.

[0041] Example 3

[0042] The application example of the anti-cheating cover, sampling bottle and method according to Example 1 of the present invention in sewage sampling is different from Example 2 in that: 1. The moving part is a solid structure, and the side wall has a groove extending in a direction parallel to the central axis of the shell. There is a gap between the upper end of the moving part and the inner wall of the shell. When the moving part moves downward, the sewage passes through the gap and then through the groove on the side wall into the bottle body.

[0043] 2. The first part is arranged parallel to the central axis of the shell, and the second part is inclined relative to the central axis (horizontal plane). The top wall and the bottom wall at the intersection of the first part and the second part are arranged in a clockwise direction.

[0044] 3. The third part is tilted relative to the horizontal plane, and when the end rotates clockwise in the third part, the distance between the end and the isolation part becomes smaller. When the moving part is pushed, the end is blocked by the bottom wall of the third part, that is, the tilted setting of the third part plays the role of a blocking part.

[0045] When the moving member moves downward, the two sides of the isolation portion are connected, and the end portion moves vertically downward in the first portion (without rotation) until the lowest end, and the deformation amount of the elastic member remains unchanged and is not zero.

[0046] When the moving part moves upward, due to the elastic force of the elastic part, the end portion enters the second portion from the first portion and moves upward, and the deformation of the elastic part gradually decreases to zero and then gradually increases. When the end portion moves to the highest end in the second portion, the deformation is the largest, and the two sides of the isolation portion are isolated; while the end portion moves upward, the projection of the trajectory of the end portion on the plane perpendicular to the central axis of the housing rotates counterclockwise around the central axis.

[0047] Under the action of the elastic force of the elastic member, the end portion enters the third portion from the second portion, and the projection of the trajectory of the end portion in the third portion on a plane perpendicular to the central axis of the shell rotates clockwise around the central axis, the deformation of the elastic member decreases, and at the same time, the end portion moves downward.

[0048] Example 4

[0049] The application example of the anti-cheating cover, sampling bottle and method according to Example 1 of the present invention in sewage sampling is different from Example 2 in that: The guide groove is spiral and non-parallel to the first part and the second part, so that when the moving part moves up and down, the end part in the limiting groove rotates and deforms.

Claims

1. An anti-cheating cover, comprising a shell and an anti-theft ring, wherein the inner wall of the shell has a first connecting portion; characterized in that: The anti-cheating cover also includes: An isolating portion, the isolating portion being annular and arranged on the inner wall of the shell; A fluid valve, the fluid valve is arranged on the isolation part and is used to control whether the two sides of the isolation part are connected; An elastic member, wherein the plurality of elastic members are respectively connected to the moving member of the fluid valve; A limiting groove, wherein a plurality of limiting grooves are arranged on the inner wall of the shell, and the end of the elastic member is arranged in the limiting groove; the limiting groove comprises a first part, a second part and a third part which are connected in sequence, when the moving member moves downward, the two sides of the isolation part are connected, and the end moves downward in the first part, and when the moving member moves upward, the end enters the second part from the first part and moves upward, the deformation amount of the elastic member increases, and finally the two sides of the isolation part are isolated; when the end moves upward and / or downward, the projection of the trajectory of the end on a plane perpendicular to the central axis of the shell rotates counterclockwise around the central axis, and the projection of the trajectory of the end in the third part on a plane perpendicular to the central axis of the shell rotates clockwise around the central axis, and the deformation amount of the elastic member decreases; The blocking portion is used to block the end portion in the third portion from moving downward.

2. The anti-cheating cover according to claim 1, characterized in that: The fluid valve further comprises: A plurality of guide grooves, which are arranged on the inner wall of the shell and extend in a direction parallel to the central axis of the shell or are in a spiral shape; A sealing member, wherein the movable member passes through the isolation portion, and the upper end and the lower end are respectively located on both sides of the isolation portion; the sealing member is arranged between the isolation portion and the lower end; A spring and a plurality of guide members, one end of the guide member is arranged in the guide groove, and the other end is connected to the moving member, and the spring is arranged between the isolation part and the guide member.

3. The anti-cheating cover according to claim 1 or 2, characterized in that: The elastic member is arranged between the guide member and the isolation portion, and is blocked by the upper end of the moving member.

4. The anti-cheating cover according to claim 1, characterized in that: The moving member is a cylindrical structure with an open upper end, a closed lower end, and a through hole on the side wall. Alternatively, the moving member is a columnar structure with a gap between the side wall and the isolation part.

5. The anti-cheating cover according to claim 1, characterized in that: The top wall and the bottom wall at the intersection of the first part and the second part are respectively arranged in a counterclockwise direction.

6. The anti-cheating cover according to claim 1 or 5, characterized in that: The first part and the second part are V-shaped, and the third part is arranged horizontally or inclined downward.

7. The anti-cheating cover according to claim 1, characterized in that: The elastic member is a spring rod.

8. The anti-cheating cover according to claim 1, characterized in that: The blocking portion is arranged in the third part and is located at the lower side of the end; or, the third part arranged horizontally or inclined downward serves as the blocking portion.

9. A sampling bottle, comprising a bottle body and a bottle cap, wherein the bottle cap is fixed to the opening end of the bottle body, and the outer wall of the opening end has a second connecting portion; characterized in that: The bottle cap adopts the anti-cheating cover body described in any one of claims 1 to 8, the first connecting part and the second connecting part match, and the anti-theft ring is self-locking.

10. A sampling method comprising the following steps: (S1) providing the sampling bottle as claimed in claim 9, and pressing down the moving part of the fluid valve, so that the two sides of the isolation part are connected, and the fluid passes through the isolation part and enters the bottle body; When the moving member moves downward, the end of the elastic member moves downward in the first part of the limiting groove and reaches the lowest end; (S2) the moving member moves upward, and at the same time, the end portion moves upward in the second portion of the limiting groove, the projection of the trajectory of the end portion on a plane perpendicular to the central axis of the housing rotates counterclockwise around the central axis, and the deformation of the elastic member increases until the fluid valve closes the isolation portion; (S3) the end portion enters the third portion from the second portion, and the projection of the trajectory of the end portion in the third portion on a plane perpendicular to the central axis of the housing rotates clockwise around the central axis, and the deformation of the elastic member decreases; When the external environment pushes the moving member, the end portion is blocked, preventing the moving member from moving downward.

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