CN115219270A - Liquid sampling bottle cap, liquid sampling bottle, liquid sampling device and liquid injection gun - Google Patents

Abstract

The utility model relates to a lid of liquid sampling bottle, liquid sampling device and notes liquid rifle, the lid is including the base that has inlet and liquid outlet, the setting is on the base and can the sealed lid of valve body and detachably setting with the switching liquid outlet of selectivity switching inlet on the base, wherein, the valve body is including motion body and stopping structure, set up on the motion body can with annotate the notes liquid mouth of liquid pipe fluid intercommunication of liquid rifle, the motion body can move along the first direction, and have the first station of the closed inlet that sets gradually along the first direction, annotate the second station of liquid mouth and inlet intercommunication in order to open the inlet and the third station of closed inlet, the stopping structure is used for preventing the motion body to move along the second direction opposite to the first direction. Therefore, the moving body cannot return to the second station from the third station after sampling is finished so as to inject liquid into the bottle, and the possibility of cheating in the transportation process is avoided.

Description

Liquid sampling bottle cap, liquid sampling bottle, liquid sampling device and liquid injection gun

technical field

The present disclosure relates to the field of sewage sampling, and in particular, to a cover body of a liquid sampling bottle, a liquid sampling bottle, a liquid sampling device and a liquid injection gun.

Background technique

At present, the sewage testing process includes sampling-transportation-laboratory testing. Specifically, sewage samples are obtained by filling the sampling bottles with sewage, and then the sewage samples are transported from the sample collection point to the designated laboratory for analysis. Now there are mature software solutions to monitor the entire process. For example, different QR codes are set on each sampling bottle to correspond to different ID numbers. Scan the code to upload the sampling bottle information, sampling equipment number, time and place and other information to the designated network platform. After the sampling is completed, the sampling bottle is manually transported to the laboratory. The laboratory personnel scan the sampling bottle to determine the sample information. Test the sample to get the corresponding result.

However, in a process like this, if the sewage in the bottle is cheated during transportation, such as mixing the bottle with other impurities, the inspection result will not match the actual one.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a cover body of a liquid sampling bottle, a liquid sampling bottle, a liquid sampling device and a liquid injection gun, so as to prevent cheating of sewage samples in the sampling bottle.

In order to achieve the above purpose, the present disclosure provides a cover body for a liquid sampling bottle, comprising: a base having a liquid inlet and a liquid outlet, a base provided on the base and capable of selectively opening and closing the liquid inlet A valve body, and a sealing cover detachably arranged on the base to open and close the liquid outlet, wherein the valve body includes a moving body, and the moving body is provided with an injector capable of being connected with the liquid injection gun. A liquid injection port in fluid communication with a liquid pipe, the moving body can move in a first direction, and has a first station, a second station and a third station arranged in sequence along the first direction, wherein, in the In the first station, the moving body closes the liquid inlet. In the second station, the liquid injection port communicates with the liquid inlet to open the liquid inlet. Three working positions, the moving body closes the liquid inlet, and wherein the valve body further includes a backstop structure arranged on the base, and the backstop structure is used for at least the first work The station, the second station, and the third station prevent the moving body from moving in a second direction opposite to the first direction.

Optionally, the moving body is configured as a columnar structure whose bottom end is inserted into the base, the first direction is a clockwise or counterclockwise rotation direction around the central axis of the columnar structure, and the moving body is The top end face is provided with a liquid injection channel into which the liquid injection pipe can be inserted, and the liquid injection port is opened on the side wall of the moving body and communicated with the liquid injection channel.

Optionally, the valve body further includes a limit ring sleeved on the outer side of the moving body and capable of elastic deformation in the radial direction, the limit ring is locked on the base in the circumferential direction; the backstop structure It includes a ratchet pawl arranged on the inner peripheral surface of the limiting ring and a ratchet tooth arranged on the outer peripheral surface of the moving body, the ratchet teeth are formed with first ratchets arranged in sequence on the outer peripheral surface of the moving body The tooth slot, the second ratchet slot and the third ratchet slot, wherein, in the first working position, the pawl is locked in the first ratchet slot, and when the moving body moves along the first When rotating from the first station to the second station in one direction, the pawl is locked in the second ratchet groove, and when the moving body rotates from the second position along the first direction When the station rotates to the third station, the pawl is locked in the third ratchet groove.

Optionally, the moving body also has a fourth station located between the first station and the second station, when the moving body rotates to the fourth station along the first direction , the liquid injection port and the liquid inlet start to be in fluid communication; the ratchet tooth is also formed with a fourth ratchet tooth slot located between the first ratchet tooth slot and the second ratchet tooth slot, so The rotation angle of the first ratchet slot and the fourth ratchet slot in the circumferential direction is smaller than the rotation angle of the moving body from the first station to the fourth station.

Optionally, the limiting ring is formed with a downwardly protruding limiting portion, and the base is formed with a limiting groove for accommodating the limiting portion, so that the limiting ring can be circumferentially formed. to the limit.

Optionally, a sealing rubber strip is provided on the outer peripheral surface of the part of the moving body inserted into the base.

Optionally, the valve body further includes a press cover sleeved on the outside of the moving body and fixed on the base, and the press cover presses the moving body into the base from the top, A position of the gland corresponding to the liquid injection channel is provided with an opening into which the liquid injection pipe can be inserted.

Optionally, the liquid injection gun has a radially protruding driving protrusion, and a vertically extending guide groove is formed on the pressure cover, and the guiding groove is used for slidingly matching with the driving protrusion. Guide the liquid injection pipe to be inserted into the liquid injection channel; the outer peripheral surface of the moving body is provided with a first driving chute and a second driving chute which are communicated at the bottom end, and the first driving chute runs along the The second direction extends obliquely from the top end of the moving body to the bottom end surface, and the second driving chute along the second direction from the bottom end of the first driving chute to the top end surface of the moving body Inclined extension; wherein, in the first station, the driving protrusion is located at the top of the guide groove, the top of the first driving chute is aligned with the top of the guide groove, and the driving protrusion is along the top of the guide groove. When the guide groove moves downward, it moves along the first driving chute to drive the moving body to rotate along the first direction to the second station; in the second station, the driving The protrusion is located at the bottom end of the guide groove, the bottom ends of the first driving chute and the second driving chute are aligned with the bottom end of the guide groove, and the driving protrusion is upward along the guide groove When moving, move along the second driving chute to drive the moving body to rotate along the first direction to the third station; when in the third station, the driving protrusion is located at the The top end of the guide groove, the top end of the second driving chute is aligned with the top end of the guide groove.

Optionally, the first driving chute and the second driving chute are formed into a Y-shaped structure, and the vertical section of the Y-shaped structure is biased toward the second driving chute.

Optionally, the liquid injection gun has a limit hook, and the outer peripheral surface of the gland is formed with a groove for matching with the limit hook, so that when the liquid injection tube is inserted into the liquid injection When the moving body is in the channel and the moving body is located at the second station, the limit hook can be clamped in the slot.

Optionally, the liquid injection gun includes a main body and a liquid injection pipe penetrating the main body, so as to be snapped into the clamping groove when rotated toward the inner side of the main body, and when rotated toward the outer side of the main body When the clamping is released, an elastic member is arranged between the limit hook and the main body, and the elastic member is configured to provide an elastic force for the limit hook to rotate toward the inner side of the main body.

Optionally, a sewage channel is further opened on the base, the sewage channel extends obliquely downward from the interior of the base to the outer surface of the base, and the sewage channel is configured to: when the movement When the body is located at the first working position, the liquid injection port is communicated with the sewage discharge channel, so that the liquid entering the liquid injection port is discharged through the sewage discharge channel.

Optionally, the sealing cover includes a blocking cover and an anti-theft ring that are connected to each other, and the sealing cover is configured such that when the blocking cover is opened to allow the liquid outlet to communicate with external liquid, the anti-theft ring is connected to the anti-theft ring. The cover is separated and locked on the base.

Optionally, a ventilation hole is opened on the blocking cover, and a waterproof and permeable membrane is provided on the inner side of the blocking cover at a position corresponding to the ventilation hole.

On the basis of the above technical solutions, the present disclosure also provides a liquid sampling bottle, comprising a bottle body and a cover body in the above technical solutions, the bottle body is provided with an opening, and the opening is connected to the liquid inlet and outlet. The fluid port is connected.

On the basis of the above technical solution, the present disclosure also provides a liquid sampling device, including the liquid sampling bottle and the liquid injection gun in the above technical solution, and the liquid injection gun can inject liquid into the bottle body through the cover body .

On the basis of the above technical solution, the present disclosure also provides a liquid injection gun, which is the liquid injection gun in the liquid sampling device in the above technical solution.

Through the above technical solutions, the cover body of the liquid sampling bottle provided by the present disclosure can be fixedly connected to the opening of the bottle body through the base, so that the liquid sample can be injected into the bottle body through the cover body. The moving body that moves along the first direction, therefore, when sampling the liquid, the moving body can be moved from the initial first station along the first direction to the second station, so that the liquid sample can pass through the injection of the moving body in sequence. The liquid port and the liquid inlet of the base enter into the bottle body, and then the moving body can be moved from the second station to the third station along the first direction, so that the moving body closes the liquid inlet of the base. Since the valve body is provided with a backstop structure, the moving body that moves to the third station after sampling cannot return to the second station. That is to say, the sampling bottle cannot be transported back to the laboratory after sampling. Fill the sampling bottle again, thus avoiding the possibility of cheating during shipping. The liquid sampling bottle, the liquid sampling device, and the liquid injection gun provided by the present disclosure have the same technical effects as the cover body in the above-mentioned technical solution.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification, and together with the following detailed description, are used to explain the present disclosure, but not to limit the present disclosure. In the attached image:

1 is a schematic structural diagram of a cover body of a liquid sampling bottle in a specific embodiment of the present disclosure;

2 is a schematic structural diagram of a cover body without a sealing cover in a specific embodiment of the present disclosure;

3 is a schematic structural diagram of a valve body in a specific embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of the cooperation between a moving body and a limit ring in a specific embodiment of the present disclosure;

Fig. 5 is the structural representation of another angle of Fig. 4;

6 is a schematic structural diagram of the assembly of a moving body and a base in a specific embodiment of the present disclosure;

7 is a schematic structural diagram of the assembly of a moving body, a limit ring and a base in a specific embodiment of the present disclosure;

8 is a cross-sectional view of the moving body in the base at the first station according to the specific embodiment of the present disclosure;

9 is a schematic structural diagram of a liquid injection gun in a specific embodiment of the present disclosure;

10 is a cross-sectional view of a liquid injection gun in an embodiment of the present disclosure;

11 is a schematic structural diagram of the cooperation between the liquid injection gun and the valve body when the moving body is located at the first station in the specific embodiment of the present disclosure;

12 is a schematic structural diagram of the cooperation between the liquid injection gun and the columnar structure when the moving body is located at the first station in the specific embodiment of the present disclosure;

13 is a schematic structural diagram of the liquid injection gun driving the moving body to the second station in the specific embodiment of the present disclosure;

14 is a schematic structural diagram of the liquid injection gun driving moving body rotating from the second station to the third station in the specific embodiment of the present disclosure;

15 is a schematic structural diagram of the liquid injection gun driving the moving body to rotate to the third station in the specific embodiment of the present disclosure;

16 is a cross-sectional view of the moving body in cooperation with the limit ring when the moving body is located at the first station according to the specific embodiment of the present disclosure, and the figure shows that the pawl is locked in the first ratchet groove;

17 is a cross-sectional view of a sealing cap in an embodiment of the present disclosure;

18 is a schematic structural diagram of a liquid sampling bottle in a specific embodiment of the present disclosure.

Description of reference numerals

1-base, 11-liquid inlet, 12-liquid outlet, 13-limiting groove, 14-sewage channel, 2-valve body, 20-moving body, 201-large diameter section, 202-small diameter section, 21-Injection port, 22-Limiting ring, 221-Limiting part, 222-Pawl, 23-Sealing strip, 241-First ratchet groove, 242-Second ratchet groove, 243-Third ratchet Tooth slot, 244-fourth ratchet slot, 25-liquid injection channel, 26-gland, 261-guide slot, 262-card slot, 263-opening hole, 271-first drive chute, 272-second drive Chute, 3-sealing cap structure, 31-blocking cap, 311-vent hole, 32-anti-theft ring, 33-waterproof and breathable membrane, 4-bottle body, 5-liquid injection gun, 50-main body, 51-liquid injection tube , 52 - drive bump, 53 - limit hook, 54 - shaft, 55 - elastic piece.

Detailed ways

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

In the present disclosure, unless stated to the contrary, directional words such as "inside and outside" are used to refer to inside and outside with respect to the contour of the corresponding part itself. Terms such as "first," "second," etc. are used to distinguish one element from another and are not of order or importance. Furthermore, when the following description refers to the drawings, the same reference numerals in different drawings refer to the same elements.

According to a specific embodiment of the present disclosure, a cover body for a liquid sampling bottle is provided. Referring to FIG. 1 to FIG. 8 , the cover body may include a base 1 having a liquid inlet 11 and a liquid outlet 12 , a base 1 provided on the base The valve body 2 on the seat 1 and capable of selectively opening and closing the liquid inlet 11, and the sealing cover 3 detachably arranged on the base 1 to open and close the liquid outlet 12, wherein, refer to FIG. 3 to FIG. 5 , the valve body 2 can include a moving body 20, the moving body 20 is provided with a liquid injection port 21 that can be fluidly communicated with the liquid injection pipe 51 of the liquid injection gun 5, and the moving body 20 can move in the first direction and has a second The first station, the second station and the third station are arranged in sequence in one direction, wherein the first direction may be the direction of moving along a straight line, the direction of moving along a curve, or the direction of moving around a certain axis of rotation The direction of rotation, and in the specific embodiment of the present disclosure, the arrow direction in FIG. 8 represents the first direction, the line A represents the position of the center line of the liquid injection port 21 when the moving body 20 is in the first station, and the line B represents The position of the center line of the liquid injection port 21 when the moving body 20 is in the second station, the line C represents the position of the center line of the liquid injection port 21 when the moving body 20 is in the third station, wherein the first station is the cover body In the initial position of the moving body 20 when leaving the factory, as shown in FIG. 8 , at the first station, the moving body 20 closes the liquid inlet 11 , and the liquid injection port 21 cannot communicate with the liquid inlet 11 . The liquid port 21 is aligned with the liquid inlet 11 and communicates with the liquid to open the liquid inlet 11. In the third station, the moving body 20 closes the liquid inlet 11, and the liquid injection port 21 cannot communicate with the liquid inlet 11, and the valve The body 2 may also include a backstop structure arranged on the base 1, and the backstop structure is used to prevent the moving body 20 from moving along a second direction opposite to the first direction at least at the first station, the second station and the third station. directional movement.

Through the above technical solutions, the cover body of the liquid sampling bottle provided by the present disclosure can be fixedly connected to the opening of the bottle body 4 through the base 1, so that the liquid sample can be injected into the bottle body 4 through the cover body. The valve body 2 has a moving body 20 that can move in the first direction. Therefore, when sampling liquid, the moving body 20 can be moved from the initial first working position to the second working position along the first direction, so that the liquid The sample can enter the bottle body 4 through the liquid injection port 21 of the moving body 20 and the liquid inlet 11 of the base 1 in sequence, and then the moving body 20 can be moved from the second station to the third station along the first direction. The moving body 20 closes the liquid inlet 11 of the base 1 . Since the valve body 2 is provided with a backstop structure, the moving body 20 that moves to the third station after sampling cannot return to the second station, that is, the process of transporting the sampling bottle back to the laboratory after sampling It is not possible to refill the sampling bottle again, thus avoiding the possibility of cheating during transportation.

In order to reduce the volume of the cover body, as shown in FIG. 1 to FIG. 8 , the moving body 20 can be configured as a columnar structure whose bottom end is inserted into the base 1 , and the first direction is to rotate clockwise or counterclockwise around the central axis of the columnar structure. In order to improve the space utilization rate by rotating the moving body 20, thereby reducing the volume of the valve body 2, the top end surface of the moving body 20 can be provided with a liquid injection channel 25 for the liquid injection pipe 51 to be inserted into. The liquid injection port 21 can be opened on the side wall of the moving body 20 and communicated with the liquid injection channel 25 , so that when the moving body 20 rotates to the second station, the liquid injection port 21 can be connected to the liquid inlet port opened inside the base 1 . 11 are aligned and connected. In addition, the columnar structure may include a small diameter section 202 and a large diameter section 201 which are connected to each other, wherein the small diameter section 202 is inserted into the base 1 , and the shoulder formed between the large diameter section 201 and the small diameter section 202 abuts against the base 1 , the liquid injection port 21 is set on the outer peripheral surface of the small diameter section 202 , and the liquid injection channel 25 is set on the top end surface of the large diameter section 201 .

Referring to FIGS. 4 , 5 and 7 , the valve body 2 may further include a limit ring 22 sleeved on the outer side of the moving body 20 , the limit ring 22 can be elastically deformed in the radial direction, and the limit ring 22 is locked in the circumferential direction. stop at the base 1 to prevent the limit ring 22 from rotating with the moving body 20; as shown in FIG. The ratchet teeth on the outer peripheral surface of the movable body 20 may be formed with a first ratchet tooth groove 241 , a second ratchet tooth groove 242 and a third ratchet tooth groove 243 which are sequentially arranged on the outer peripheral surface of the moving body 20 . position, the pawl 222 is locked in the first ratchet groove 241, when the moving body 20 rotates from the first station to the second station in the first direction as shown by the arrow in FIG. 16, the pawl 222 is locked In the second ratchet groove 242 , when the moving body 20 rotates from the second station to the third station along the first direction, the pawl 222 is locked in the third ratchet groove 243 . When the moving body 20 rotates in the first direction, the limiting ring 22 can be elastically deformed, so as to facilitate relative sliding between the ratchet pawl 222 and each ratchet tooth groove. In order to make the cooperation between the moving body 20 and the limit ring 22 smooth and reliable, the ratchet pawls may include two ratchet pawls 222 on the inner peripheral surface of the limit ring 22 diametrically opposite, and correspondingly, the ratchet teeth may be included in the On the outer peripheral surface of the moving body 20 are two radially opposite first ratchet grooves 241 , two radially opposite second ratchet grooves 242 and two radially opposite third ratchet grooves 243 . In addition, the limit ring 22 may not be provided between the base 1 and the moving body 20, but a pawl that can only move in the radial direction of the moving body 20 and approach or move away from the moving body 20 can be directly arranged on the base 1. It should be noted here that as long as the pawl can be locked on the base 1 in the circumferential direction, can move in the radial direction of the moving body 20 , and can be locked in the corresponding ratchet groove on the moving body 20 at the corresponding working position , the present disclosure does not limit the specific arrangement of the pawls.

In order to achieve relative fixation between the limit ring 22 and the base 1 in the circumferential direction, as shown in FIGS. 4 and 5 , the limit ring 22 is formed with a downwardly protruding limit portion 221 , with reference to FIGS. 6 and 5 . As shown in FIG. 7 , a limiting groove 13 for accommodating a limiting portion 221 is formed on the base 1 , and the limiting portion 221 is placed in the limiting groove 13 to prevent the limiting ring 22 from rotating with the moving body 20 . Thereby, the circumferential limit of the limit ring 22 is realized.

In addition, in order to enable the moving body 20 to rotate in the base 1, the small diameter section 202 of the moving body 20 and the base 1 are in clearance fit, and in order to ensure that the liquid injection port 21 and the inlet at the first station and the third station are There is no fluid communication between the liquid ports 11. Referring to FIG. 3 to FIG. 5, the part of the moving body 20 that is inserted into the base 1, that is, the outer peripheral surface of the small diameter section 202, may be provided with a sealing strip 23 for sealing the small diameter section. 202 and the gap between the base 1, so as to avoid fluid communication between the liquid injection port 21 and the liquid inlet 11 in the first and third stations through the gap, and because the sealing rubber strip 23 can be elastically deformed, so The sealing rubber strip 23 will not affect the rotation of the moving body 20 in the base 1 while providing sealing.

In order to avoid cheating by pouring liquid into the sampling bottle in advance before sampling, the moving body 20 may also have a fourth station located between the first station and the second station. When rotating in one direction to the fourth station, the liquid injection port 21 and the liquid inlet 11 begin to communicate with each other in fluid, that is, the fourth station is configured such that when the moving body 20 rotates from the first station in the first direction, the rotating When the edge of the sealing strip 23 close to the liquid injection port 21 just crosses the edge of the liquid inlet port 11, the liquid inlet port 11 and the liquid injection port 21 can be in fluid communication through the gap between the small diameter section 202 and the base 1. Position; as shown in FIG. 16 , the ratchet can also be formed with a fourth ratchet slot 244 located between the first ratchet slot 241 and the second ratchet slot 242, the first ratchet slot 241 and the fourth ratchet slot 244. The rotation angle of 244 in the circumferential direction is smaller than the rotation angle of the moving body 20 from the first station to the fourth station. That is to say, if you want to cheat by pouring liquid into the sampling bottle before sampling, at least you need to rotate the moving body 20 to the fourth station. Reverse the moving body 20 in the second direction, and when the pawl 222 is locked in the fourth ratchet slot 244, the moving body 20 will not be able to continue to rotate in the second direction, and will not be able to return to the first station . When the staff is sampling, if they find that the moving body 20 in the cap body of a sampling bottle is not in the initial first station when leaving the factory, they can realize that the sampling bottle has the risk of being cheated, so that the sampling bottle can be Dispose of it to avoid inaccurate test results caused by sampling with fraudulent sampling bottles.

In order to limit the moving body 20 in the axial direction, as shown in FIGS. 1 to 3 , the valve body 2 may further include a gland 26 sleeved on the outside of the moving body 20 and fixed on the base 1 . The top presses the moving body 20 into the base 1, and the position of the gland 26 corresponding to the liquid injection channel 25 is provided with an opening 263 for avoiding the liquid injection channel 25, so that the liquid injection pipe 51 can pass through the opening 263 to Insert into the injection channel 25. Wherein, the pressing cover 26 can be bonded and fixed with the base 1 .

In order to enable the moving body 20 to be driven and rotated by the liquid injection gun 5, as shown in FIG. 9 and FIG. 11 to FIG. 15, the liquid injection gun 5 may have a driving protrusion 52 for radial projection, as shown in FIG. 3 , a vertically extending guide groove 261 may be formed on the gland 26. The guide groove 261 is used to slide and cooperate with the driving bump 52 to guide the liquid injection pipe 51 to be inserted into the liquid injection channel 25; The outer peripheral surface of the large-diameter section 201 of the body 20 may be provided with a first driving chute 271 and a second driving chute 272 communicated at the bottom end. The top end faces the shaft shoulder and extends obliquely, and the second driving chute 272 extends obliquely from the bottom end of the first driving chute 271 to the top end face of the large-diameter section 201 along the second direction; wherein, as shown in FIGS. 11 and 12 , In the first station, the driving protrusion 52 is located at the top of the guide groove 261, the top of the first driving chute 271 is aligned with the top of the guide groove 261, and the driving protrusion 52 slides down along the guide groove 261 along the first driving groove 261. The chute 271 moves to drive the moving body 20 to rotate along the first direction to the second station, that is to say, the liquid injection gun 5 can simultaneously drive the moving body 20 to rotate from the first station to the second station during the process of inserting the cover body. Station; as shown in FIG. 13 , in the second station, the drive bump 52 is located at the bottom end of the guide groove 261 , the bottom ends of the first drive chute 271 and the second drive chute 272 and the bottom end of the guide groove 261 Alignment, as shown in FIG. 14, when the driving projection 52 moves upward along the guide groove 261, it moves along the second driving chute 272 and drives the moving body 20 to rotate in the first direction to the third station, as shown in FIG. 15, At the third station, the driving bump 52 is located at the top of the guide groove 261, and the top of the second driving chute 272 is aligned with the top of the guide groove 261. That is, when the liquid injection gun 5 completes the injection of the sampling bottle , the liquid injection gun 5 can simultaneously drive the moving body 20 to rotate from the second station to the third station during the process of pulling out the liquid injection gun 5 from the cover body. Through the above technical solutions, the rotation of the moving body 20 can be driven by the insertion and removal of the liquid injection gun 5, and the sampling efficiency can be improved. In addition, if the sampling bottle is cheated before sampling, so that the moving body 20 of the cover body cannot return to the first station, then the top of the first driving chute 271 will be staggered from the top of the guide groove 261, so that the liquid injection gun 5. The sampling bottle cannot be used because it cannot be inserted into the cap body, which further improves the anti-cheating performance of the sampling bottle.

Referring to FIGS. 5 and 6 , the first driving chute 271 and the second driving chute 272 may be configured as a Y-shaped structure, and the vertical section of the Y-shaped structure may be biased toward the second driving chute 272 .

In order to avoid the rotation of the moving body 20 during the liquid injection process of the liquid injection gun 5, as shown in FIG. There is a slot 262 for cooperating with the limit hook 53, so that when the liquid injection pipe 51 is inserted into the liquid injection channel 25 and the moving body 20 is located at the second station, the limit hook 53 can be clipped in the slot 262. , so that the liquid injection gun 5 and the cover are relatively fixed, so as to avoid the rotation of the moving body 20 caused by the misoperation of the liquid injection gun 5 during the liquid injection process.

Referring to FIG. 9 and FIG. 10 , the liquid injection gun 5 may include a main body 50 and a liquid injection pipe 51 penetrating the main body 50. The liquid injection pipe 51 can be inserted into the liquid injection channel 25 on the cover to pass the injection of the cover. The liquid port 21 injects liquid into the bottle body 4 . Referring to FIG. 10 , the limit hook 53 can be rotatably connected to the main body 50 through the rotating shaft 54 , so as to be latched into the slot 262 when rotated toward the inner side of the main body 50 , and released when rotated toward the outer side of the main body 50 . The elastic member 55 can be provided between the limit hook 53 and the main body 50 to be fixed by the clip connection with the card slot 262 . During the process of inserting the liquid injection gun 5 into the cover body and driving the moving body 20 to rotate from the first station to the second station, the limit hook 53 slides on the outer peripheral surface of the pressure cover 26, and when the moving body 20 rotates to the second station In the second station, the limit hook 53 can clamp the slot 262 under the action of the elastic member 55. When the liquid injection gun 5 needs to be pulled out after the liquid injection, an external force can be applied to the limit hook 53, so that the limit The hook 53 overcomes the elastic force of the elastic member 55 and is separated from the slot 262 , so that the liquid injection gun 5 can be pulled out from the cover.

In order to avoid cheating by depositing liquid in the liquid injection channel 25 in advance, as shown in FIG. 6 and FIG. 8 , the base 1 can also be provided with a sewage channel 14 , and the sewage channel 14 extends obliquely downward from the interior of the base 1 to On the outer surface of the base 1, the sewage channel 14 can be configured so that when the moving body 20 is at the first station, the liquid injection port 21 communicates with the sewage channel 14, so that the liquid entering the liquid injection channel 25 passes through the liquid injection port 21 and the sewage discharge. The channel 14 is drained to prevent the liquid for cheating from remaining in the injection channel 25.

In order to avoid cheating through the liquid outlet 12 of the base 1 , as shown in FIGS. 1 and 17 , the sealing cover 3 may include a blocking cover 31 and an anti-theft ring 32 connected to each other, and the sealing cover 3 may be configured to be opened when the blocking cover 31 is opened. When the liquid outlet 12 is communicated with the external liquid, the anti-theft ring 32 is separated from the blocking cover 31 and locked on the base 1 . When the sampling bottle is transported back to the laboratory after sampling, if the laboratory staff finds that the anti-theft ring 32 on a sampling bottle is separated from the blocking cover 31, they can realize that the liquid outlet 12 of the sampling bottle has been connected to the external fluid. Connected, that is, before reaching the laboratory, the sampling bottle has the possibility of being cheated through the liquid outlet 12 .

In addition, in order to facilitate the injection of liquid into the bottle body 4, as shown in FIG. 1 and FIG. 17, at least one ventilation hole 311 may be opened on the blocking cover 31, and the inner side of the blocking cover 31 may be provided with a position corresponding to the ventilation hole 311. The waterproof and breathable membrane 33 is provided so that the bottle body 4 can be vented through the waterproof and breathable membrane 33 and the ventilation holes 311 , so that the liquid sample can be injected into the bottle body 4 through the liquid inlet 11 .

On the basis of the above technical solution, the present disclosure also provides a liquid sampling bottle. Referring to FIG. 18 , the liquid sampling bottle may include a bottle body 4 and a cover body in the above technical solution, and the cover body may be adhered to the bottle body 4 The connection is fixed, the bottle body 4 is provided with an opening, and the opening is in liquid communication with the liquid inlet 11 and the liquid outlet 12 of the base 1 of the cover body.

Through the above technical solutions, the liquid sampling bottle provided by the present disclosure has the same technical effect as the cover body in the above technical solutions, and in order to avoid unnecessary repetition, details are not described here.

On the basis of the above technical solution, the present disclosure also provides a liquid sampling device, including the liquid sampling bottle in the above technical solution and a liquid injection gun 5, and the liquid injection gun 5 can inject liquid into the bottle body 4 through the cover body.

Through the above technical solutions, the liquid sampling device provided by the present disclosure has the same technical effect as the liquid sampling bottle in the above technical solutions. In order to avoid unnecessary repetitions, details are not described here.

On the basis of the above technical solution, the present disclosure also provides a liquid injection gun, which is the liquid injection gun 5 in the liquid sampling device in the above technical solution.

Through the above technical solutions, the liquid injection gun provided by the present disclosure has the same technical effect as the liquid sampling device in the above technical solutions, and in order to avoid unnecessary repetition, details are not described here.

The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple variants belong to the scope of this public protection.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner if there is no contradiction. The combination method will not be described separately.

In addition, various implementations of the present disclosure can be combined arbitrarily, as long as they do not violate the idea of the present disclosure, they should also be regarded as the content disclosed in the present disclosure.

Claims (17)

1. A cover body for a liquid sampling bottle, characterized in that it comprises: a base (1) having a liquid inlet (11) and a liquid outlet (12), a base (1) provided on the base (1) and capable of A valve body (2) for selectively opening and closing the liquid inlet (11), and a sealing cover (3) detachably provided on the base (1) for opening and closing the liquid outlet (12) , Wherein, the valve body (2) includes a moving body (20), and the moving body (20) is provided with a liquid injection port (21) that can be fluidly communicated with the liquid injection pipe (51) of the liquid injection gun (5). , the moving body (20) can move along the first direction, and has a first station, a second station and a third station arranged in sequence along the first direction, wherein, in the first station In the second position, the moving body (20) closes the liquid inlet (11), and in the second station, the liquid injection port (21) communicates with the liquid inlet (11) to open the liquid inlet (11). a liquid port (11), in the third station, the moving body (20) closes the liquid inlet (11), And wherein, the valve body (2) further comprises a backstop structure arranged on the base (1), and the backstop structure is used for at least the first station, the second station and the The third station prevents the moving body (20) from moving in a second direction opposite to the first direction. 2 . The cover according to claim 1 , wherein the moving body ( 20 ) is configured as a columnar structure whose bottom end is inserted into the base (1 ), and the first direction is around the columnar structure. 3 . In the direction of clockwise or counterclockwise rotation of the central axis of the structure, the top end face of the moving body (20) is provided with a liquid injection channel (25) into which the liquid injection pipe (51) can be inserted, and the liquid injection port (21) is opened on the moving body (20) and communicated with the liquid injection channel (25). 3 . The cover body according to claim 2 , wherein the valve body ( 2 ) further comprises a limit ring ( 22 ) sleeved on the outer side of the moving body ( 20 ) and capable of elastically deforming in the radial direction. 4 . ), the limit ring (22) is circumferentially locked on the base (1); The backstop structure comprises a ratchet (222) arranged on the inner peripheral surface of the limiting ring (22) and a ratchet tooth arranged on the outer peripheral surface of the moving body (20), the ratchet teeth are formed with sequential a first ratchet slot (241), a second ratchet slot (242) and a third ratchet slot (243) provided on the outer peripheral surface of the moving body (20), wherein, at the first station When the ratchet pawl (222) is locked in the first ratchet tooth slot (241), when the moving body (20) rotates along the first direction from the first station to the second In the working position, the pawl (222) is locked in the second ratchet groove (242), and when the moving body (20) rotates along the first direction from the second working position to the In the third working position, the ratchet pawl (222) is locked in the third ratchet tooth groove (243). 4. The cover body according to claim 3, characterized in that, the moving body (20) further has a fourth station located between the first station and the second station, and the moving body (20) When rotating to the fourth station along the first direction, the liquid injection port (21) and the liquid inlet port (11) begin to be in fluid communication; The ratchet is further formed with a fourth ratchet slot (244) located between the first ratchet slot (241) and the second ratchet slot (242), the first ratchet slot (241) ) and the fourth ratchet groove (244) in the circumferential direction is smaller than the rotation angle of the moving body (20) from the first station to the fourth station. 5. The cover body according to claim 3, characterized in that, a limiting portion (221) protruding downward is formed on the limiting ring (22), and a limiting portion (221) is formed on the base (1) for The limiting groove (13) of the limiting portion (221) is accommodated to limit the circumferential position of the limiting ring (22). 6 . The cover body according to claim 2 , wherein a sealing rubber strip ( 23 ) is provided on the outer peripheral surface of the portion of the moving body ( 20 ) inserted into the base ( 1 ). 7 . 7. The cover body according to any one of claims 2-6, characterized in that, the valve body (2) further comprises a cover sleeved on the outside of the moving body (20) and fixed on the base A gland (26) on (1), the gland (26) presses the moving body (20) into the base (1) from the top, and the gland (26) corresponds to the The position of the liquid injection channel (25) is provided with an opening (263) into which the liquid injection pipe (51) can be inserted. 8 . The cover according to claim 7 , wherein the liquid injection gun ( 5 ) has a driving protrusion ( 52 ) for radially protruding, and the gland ( 26 ) is formed with a vertical an extending guide groove (261), the guide groove (261) is used for slidingly matching with the driving projection (52) to guide the liquid injection pipe (51) to be inserted into the liquid injection channel (25); The outer peripheral surface of the moving body (20) is provided with a first driving chute (271) and a second driving chute (272) communicated at the bottom end, and the first driving chute (271) runs along the The second direction extends obliquely from the top end of the moving body (20) to the bottom end surface, and the second driving chute (272) extends from the bottom end of the first driving chute (271) along the second direction extending obliquely toward the top end face of the moving body (20); Wherein, in the first working position, the driving protrusion (52) is located at the top end of the guide groove (261), and the top end of the first driving chute (271) is in contact with the guide groove (261). When the top ends are aligned, when the driving projection (52) moves downward along the guide groove (261), it moves along the first driving chute (271) to drive the moving body (20) along the first driving groove (271). Rotate the direction to the second station; In the second working position, the driving protrusion (52) is located at the bottom end of the guide groove (261), and the first driving sliding groove (271) and the second driving sliding groove (272) are The bottom end is aligned with the bottom end of the guide groove (261), and when the driving protrusion (52) moves upward along the guide groove (261), it moves along the second driving chute (272) to drive the The moving body (20) is rotated to the third station along the first direction; In the third station, the driving projection (52) is located at the top of the guide groove (261), the top of the second driving chute (272) and the top of the guide groove (261) Align. 9 . The cover according to claim 8 , wherein the first driving chute ( 271 ) and the second driving chute ( 272 ) are formed into a Y-shaped structure, and the vertical direction of the Y-shaped structure The straight section is biased towards the second drive chute (272). 10 . The cover according to claim 7 , wherein the liquid injection gun ( 5 ) has a limit hook ( 53 ), and the outer peripheral surface of the gland ( 26 ) is formed with a limit hook ( 53 ) for connecting with the limit 10 . the slot (262) fitted with the hook (53), so that when the liquid injection pipe (51) is inserted into the liquid injection channel (25) and the moving body (20) is located at the second station , the limit hook (53) can be clipped in the slot (262). 11. The cover according to claim 10, characterized in that the liquid injection gun (5) comprises a main body (50) and a liquid injection pipe (51) penetrating the main body (50), the limit card The hook (53) is rotatably connected to the main body (50) through a rotating shaft (54), so as to be snapped into the locking groove (262) when rotated toward the inner side of the main body (50), and to be snapped toward the When the outer side of the main body (50) is rotated, the clamping connection is released, an elastic member (55) is arranged between the limit hook (53) and the main body (50), and the elastic member (55) is configured to be able to be The limiting hook (53) provides elastic force for rotating toward the inner side of the main body (50). 12 . The cover according to claim 1 , wherein a sewage channel ( 14 ) is further opened on the base ( 1 ), and the sewage channel ( 14 ) is formed by the inside of the base ( 1 ). 13 . extending obliquely downward to the outer surface of the base (1), the sewage channel (14) is configured such that when the moving body (20) is located at the first station, the liquid injection port (21) ) communicates with the sewage discharge channel (14), so as to discharge the liquid entering the liquid injection port (21) through the sewage discharge channel (14). 13. The cover body according to claim 1, wherein the sealing cover (3) comprises a blocking cover (31) and an anti-theft ring (32) which are connected to each other, and the sealing cover (3) is configured to: When the blocking cover (31) is opened to make the liquid outlet (12) communicate with the external liquid, the anti-theft ring (32) is separated from the blocking cover (31) and locked on the base (1). )superior. 14. The cover body according to claim 13, characterized in that, the blocking cover (31) is provided with a ventilation hole (311), and the inner side of the blocking cover (31) corresponds to the ventilation hole (311) A waterproof and breathable membrane (33) is arranged at the position of . 15. A liquid sampling bottle, characterized in that it comprises a bottle body (4) and the cover body according to any one of claims 1-14, wherein the bottle body (4) is provided with an opening, and the opening is formed with an opening. The liquid inlet (11) is communicated with the liquid outlet (12). 16. A liquid sampling device, characterized in that it comprises the liquid sampling bottle according to claim 15 and a liquid injection gun (5), wherein the liquid injection gun (5) can pass the cover body to the bottle body (5). 4) Internal injection. 17. A liquid injection gun, characterized in that the liquid injection gun is the liquid injection gun (5) in the liquid sampling device according to claim 16.

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