Sampling device for chemical laboratory analysis

Abstract

The utility model relates to the technical field of chemical sampling devices, in particular to a sampling device for chemical test analysis, which comprises an upper valve body, a lower valve body arranged at the left end of the upper valve body, a connecting rubber mat arranged between the right end of the lower valve body and the left end of the upper valve body, and the right end of the lower valve body is fixedly connected with the left end of the upper valve body through the connecting rubber mat. Liquid storage cavities are formed in the right end of the lower valve body and the left end of the upper valve body, a middle partition plate is arranged at the left end of each liquid storage cavity, the outer side end of each middle partition plate is fixedly connected with the liquid storage cavity in the inner side of the lower valve body, a valve element hole is formed in the center of each middle partition plate, and a pressure groove is formed in the left side of each middle partition plate. The thick valve rod and the valve element rod are pushed into the liquid storage cavity and the sliding cavity till the left end of the valve element body abuts against the polytetrafluoroethylene pad, the suction pipe set is connected with the thin connecting pipe through threads, assembling and sampling operation can be completed, assembling is easy, carrying is convenient after disassembling, and the sampling work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical sampling device technical field especially uses sampling device for chemical test analysis. BACKGROUND

[0002] Chemical products need to use sampling device to sample chemical products in the production and processing process, and detailed product conditions are obtained by testing and analyzing samples, so that material addition or corresponding production condition adjustment can be appropriately carried out in time according to specific analysis data.

[0003] But the existing sampling device, the structure is relatively complex, sampling method needs specific way, and carrying is inconvenient, reduces sampling efficiency. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a sampling device for chemical test analysis.

[0005] In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:

[0006] The utility model provides a sampling device for chemical analysis, including upper valve body, thick valve stem, valve handle, connecting thin pipe, connecting elbow, short pipette, long pipette, lower valve body, pressure cover, reset spring, polytetrafluoroethylene pad, polytetrafluoroethylene fixed pipe, valve core main part, valve core stem, valve core fixed ring, connecting rubber pad, sealing ring, pressure groove, valve core hole, intermediate partition, liquid storage cavity, sliding cavity, the left end of upper valve body is equipped with lower valve body, the right end between lower valve body and the left end of upper valve body is equipped with connecting rubber pad, the right end of lower valve body and the left end of upper valve body are fixedly connected through connecting rubber pad, the right end of lower valve body and the left end of upper valve body are opened liquid storage cavity, the left end of liquid storage cavity is equipped with intermediate partition, the inside of intermediate partition and the liquid storage cavity of lower valve body fixedly connected, the centre of intermediate partition is opened valve core hole, the left side of intermediate partition is opened pressure groove, the pressure groove is coaxial with lower valve body and is arranged, the left side of pressure groove is equipped with pressure cover, the right side of pressure cover is equipped with a plurality of reset springs, a plurality of reset springs are evenly distributed in the right side of pressure cover and are annular array, the right end of pressure cover is fixedly connected with the left end of intermediate partition through a plurality of reset springs, the right end of pressure cover is circular truncated cone's convex, the diameter of circular truncated cone's convex is greater than the diameter of valve core hole and is coaxial with valve core hole, the right end of liquid storage cavity is equipped with sliding cavity, sliding cavity is in upper valve body, sliding cavity is from the right end of liquid storage cavity and penetrates to the right end of upper valve body, thick valve stem is equipped in sliding cavity, the outer cylindrical side of thick valve stem and the inner cylindrical side of sliding cavity are slidably connected, a pair of sealing rings are equipped between the outer cylindrical side of thick valve stem and the inner cylindrical side of sliding cavity, the inside of a pair of sealing rings is clamped in the recess of the outer cylindrical side of thick valve stem and is slidably connected with the inner cylindrical side of sliding cavity, the right end of thick valve stem is equipped with valve handle, the left side of valve handle is fixedly connected with the right end of thick valve stem, the left end of thick valve stem is equipped with valve core stem, the right end of valve core stem is fixedly connected with the left end of thick valve stem, the left end of valve core stem is equipped with valve core main part, valve core main part is sleeved on the left end of valve core stem, the right side of valve core main part is equipped with valve core fixed ring, valve core main part is fixed in the left end of valve core stem through valve core fixed ring, the left side of valve core main part is equipped with circular truncated cone's convex, the maximum diameter of the convex is equal to the valve core hole, the intermediate partition and valve core main part are equipped with polytetrafluoroethylene pad, the left end of polytetrafluoroethylene pad is fixedly connected with intermediate partition, the left side of valve core main part is against the right end of polytetrafluoroethylene pad, the right side of polytetrafluoroethylene pad is equipped with polytetrafluoroethylene fixed pipe left end and is fixedly connected with polytetrafluoroethylene pad, the outer cylindrical side of polytetrafluoroethylene fixed pipe is fixedly connected with the inner cylindrical side of liquid storage cavity.

[0007] Further, the right side of the lower end of the liquid storage cavity is equipped with a connecting thin pipe, the upper end of the connecting thin pipe is fixed with the lower end of the upper valve body and communicates with the lower end of the liquid storage cavity, the lower end of the connecting thin pipe is equipped with a right pipette group, the upper end of the pipette group is fixed with the lower end of the connecting thin pipe and communicates.

[0008] Further, the suction pipe group comprises a connecting elbow pipe, the upper end of the connecting elbow pipe is fixed and communicated with the lower end of the connecting thin pipe through threads, the right end of the connecting elbow pipe is provided with a short suction pipe, the left end of the short suction pipe is fixed and communicated with the right end of the connecting elbow pipe, and the right lower side of the short suction pipe is provided with a long suction pipe, the upper end of the long suction pipe is fixed and communicated with the right end of the short suction pipe through the connecting elbow pipe.

[0009] Further, the pressure cover, the polytetrafluoroethylene pad, the polytetrafluoroethylene fixing pipe, the valve core body, the valve core rod, the valve core fixing ring, the pressure groove, the valve core hole, the intermediate partition plate, the liquid storage cavity and the sliding cavity are coaxially arranged with the upper valve body and the lower valve body.

[0010] Beneficial effects: by arranging the upper valve body, the lower valve body, the thick valve rod, the valve core rod and the suction pipe group, the sampling device is divided into three parts, when assembling, the thick valve rod and the valve core rod are pushed into the liquid storage cavity and the sliding cavity until the left end of the valve core body abuts against the polytetrafluoroethylene pad, and the suction pipe group is connected with the connecting thin pipe through threads, so that the assembly is completed, sampling operation is carried out, the assembly is simple, the disassembly is convenient for carrying, and the working efficiency of sampling is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is the three-dimensional structure schematic diagram of the utility model;

[0012] Fig. 2 is the front view structure schematic diagram of the utility model;

[0013] Reference signs:

[0014] 1 upper valve body, 2 thick valve rod, 3 valve handle, 4 connecting thin pipe, 5 connecting elbow pipe, 6 short suction pipe, 7 long suction pipe, 8 lower valve body, 9 pressure cover, 10 return spring, 11 polytetrafluoroethylene pad, 12 polytetrafluoroethylene fixing pipe, 13 valve core body, 14 valve core rod, 15 valve core fixing ring, 16 connecting rubber pad, 17 sealing ring, 18 pressure groove, 19 valve core hole, 20 intermediate partition plate, 21 liquid storage cavity, 22 sliding cavity. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0016] In the description of the utility model, need understanding is, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation structure and operation, therefore can not be understood as the limitation to the utility model.

[0017] With reference to Figs. 1-2The utility model provides a sampling device for chemical analysis, including upper valve body 1, coarse valve stem 2, valve handle 3, connecting thin tube 4, connecting elbow 5, short pipette 6, long pipette 7, lower valve body 8, pressure cover 9, reset spring 10, polytetrafluoroethylene pad 11, polytetrafluoroethylene fixed pipe 12, valve core main part 13, valve core stem 14, valve core fixed ring 15, connecting rubber pad 16, sealing ring 17, pressure groove 18, valve core hole 19, intermediate partition 20, liquid storage cavity 21, sliding cavity 22, upper valve body 1 left end is equipped with lower valve body 8, and the right end between lower valve body 8 and upper valve body 1 left end is equipped with connecting rubber pad 16, and the right end of lower valve body 8 is fixedly connected with the left end of upper valve body 1 through connecting rubber pad 16, and the right end of lower valve body 8 is opened with liquid storage cavity 21 with upper valve body 1 left end, and the left end of liquid storage cavity 21 is equipped with intermediate partition 20, and the outside end of intermediate partition 20 is fixedly connected with the inside liquid storage cavity 21 of lower valve body 8, and the centre of intermediate partition 20 is opened with valve core hole 19, and the left side of intermediate partition 20 is opened with pressure groove 18, and pressure groove 18 is arranged with the same axis with lower valve body 8, and the left side of pressure groove 18 is equipped with pressure cover 9, and the right side of pressure cover 9 is equipped with a plurality of reset spring 10, and a plurality of reset spring 10 are evenly distributed in the right side of pressure cover 9 in annular array shape, and the right end of pressure cover 9 is fixedly connected with the left end of intermediate partition 20 through a plurality of reset spring 10, and the right end of pressure cover 9 is the circular truncated cone shaped convex, and the diameter of circular truncated cone shaped convex is greater than the diameter of valve core hole 19 and is arranged with the same axis with valve core hole 19, and the right end of liquid storage cavity 21 is equipped with sliding cavity 22, and sliding cavity 22 is located in upper valve body 1, and sliding cavity 22 penetrates from the right end of liquid storage cavity 21 to the right end of upper valve body 1, and coarse valve stem 2 is arranged in sliding cavity 22, and the outer cylindrical side of coarse valve stem 2 is slidably connected with the inner cylindrical side of sliding cavity 22, and a pair of sealing ring 17 is arranged between the outer cylindrical side of coarse valve stem 2 and the inner cylindrical side of sliding cavity 22, and the inside end of a pair of sealing ring 17 is clamped in the recess of the outer cylindrical side of coarse valve stem 2 and is slidably connected with the inner cylindrical side of sliding cavity 22, and the right end of coarse valve stem 2 is equipped with valve handle 3, and the left side middle part of valve handle 3 is fixedly connected with the right end of coarse valve stem 2, and the left end of coarse valve stem 2 is equipped with valve core stem 14, and the right end of valve core stem 14 is fixedly connected with the left end of coarse valve stem 2, and the left end of valve core stem 14 is equipped with valve core main part 13, and valve core main part 13 is sleeved on the left end of valve core stem 14, and the right side of valve core main part 13 is equipped with valve core fixed ring 15, and valve core main part 13 is fixed on the left end of valve core stem 14 through valve core fixed ring 15, and the left side of valve core main part 13 is equipped with the circular truncated cone shaped convex, and the maximum diameter of the convex is equal to valve core hole 19, and the left side of intermediate partition 20 is equipped with polytetrafluoroethylene pad 11, and the left end of polytetrafluoroethylene pad 11 is fixedly connected with intermediate partition 20, and the left side of valve core main part 13 abuts against the right end of polytetrafluoroethylene pad, and the right side of polytetrafluoroethylene pad 11 is equipped with polytetrafluoroethylene fixed pipe 12 left end and is fixedly connected with polytetrafluoroethylene pad 11,The outer cylindrical side of the polytetrafluoroethylene fixed pipe 12 is fixedly connected with the inner cylindrical side of the liquid storage cavity 21.

[0018] The lower end of the liquid storage cavity 21 is provided with a connecting thin pipe 4, the upper end of the connecting thin pipe 4 is fixed with the lower end of the upper valve body 1 and communicates with the lower end of the liquid storage cavity 21, and the lower end of the connecting thin pipe 4 is provided with a right suction pipe group, the upper end of the suction pipe group is fixed with the lower end of the connecting thin pipe 4 through threads and communicates with the lower end of the connecting thin pipe 4.

[0019] The suction pipe group comprises a connecting elbow 5, the upper end of the connecting elbow 5 is fixed with the lower end of the connecting thin pipe 4 through threads and communicates with the lower end of the connecting thin pipe 4, the right end of the connecting elbow 5 is provided with a short suction pipe 6, the left end of the short suction pipe 6 is fixed with the right end of the connecting elbow 5 and communicates with the right end of the connecting elbow 5, and the right lower side of the short suction pipe 6 is provided with a long suction pipe 7, the upper end of the long suction pipe 7 is fixed with the right end of the short suction pipe 6 through the connecting elbow 5 and communicates with the right end of the short suction pipe 6.

[0020] The pressure cover 9, the polytetrafluoroethylene pad 11, the polytetrafluoroethylene fixed pipe 12, the valve core body 13, the valve core rod 14, the valve core fixing ring 15, the pressure groove 18, the valve core hole 19, the intermediate partition plate 20, the liquid storage cavity 21 and the sliding cavity 22 are coaxially arranged with the upper valve body 1 and the lower valve body 8.

[0021] Working principle:

[0022] The sampling device is divided into three parts, when assembling, the coarse valve rod 2 and the valve core rod 14 are pushed into the liquid storage cavity 21 and the sliding cavity 22 until the left end of the valve core body 13 abuts against the polytetrafluoroethylene pad 11, and the suction pipe group is connected with the connecting thin pipe 4 through threads, so that the assembling is completed and the sampling operation is performed.

[0023] When sampling, the pressure cover 9 is pressed until the protrusion on the right side of the pressure cover 9 blocks the valve core hole 19, the valve handle 3 is pulled, the chemical liquid is introduced into the liquid storage cavity 21 through the suction pipe group and the connecting thin pipe 4 due to the pressure effect, the lower end of the suction pipe group is placed into a containing container, the pressure cover 9 is loosened, the sampled liquid is automatically flowed into the containing container, and the sampling operation is completed.

[0024] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A sampling device for chemical analysis, characterized in that: The valve body includes an upper valve body (1), a thick valve stem (2), a valve handle (3), a connecting thin tube (4), a connecting bend (5), a short suction tube (6), a long suction tube (7), a lower valve body (8), a pressure cap (9), a return spring (10), a PTFE gasket (11), a PTFE fixing tube (12), a valve core body (13), a valve core rod (14), a valve core fixing ring (15), a connecting rubber gasket (16), a sealing ring (17), a pressure groove (18), a valve core hole (19), a middle partition plate (20), a liquid storage chamber (21), and a sliding chamber (22). The upper valve body (1) has a lower valve body (8) at its left end, and a connecting rubber gasket (16) is provided between the right end of the lower valve body (8) and the left end of the upper valve body (1). 8) The right end is fixedly connected to the left end of the upper valve body (1) by a connecting rubber gasket (16). The right end of the lower valve body (8) and the left end of the upper valve body (1) have a liquid storage cavity (21). The left end of the liquid storage cavity (21) is provided with a middle partition plate (20). The outer end of the middle partition plate (20) is fixedly connected to the inner liquid storage cavity (21) of the lower valve body (8). The center of the middle partition plate (20) has a valve core hole (19). The left side of the middle partition plate (20) has a pressure groove (18). The pressure groove (18) is coaxially arranged with the lower valve body (8). The left side of the pressure groove (18) is provided with a pressure cover (9). The right side of the pressure cover (9) is provided with several return springs (10). The several return springs (10) are arranged in a ring array. The pressure cap (9) is evenly distributed on the right side. The right end of the pressure cap (9) is fixedly connected to the left end of the middle partition plate (20) by several return springs (10). The right end of the pressure cap (9) has a frustum-shaped protrusion. The diameter of the frustum-shaped protrusion is larger than the diameter of the valve core hole (19) and is coaxial with the valve core hole (19). The right end of the liquid storage cavity (21) is provided with a sliding cavity (22). The sliding cavity (22) is located in the upper valve body (1). The sliding cavity (22) extends from the right end of the liquid storage cavity (21) to the right end of the upper valve body (1). The sliding cavity (22) is provided with a thick valve rod (2). The outer cylindrical side of the thick valve rod (2) is slidably connected to the inner cylindrical side of the sliding cavity (22). A pair of sealing rings (17) are provided between the outer cylindrical side and the inner cylindrical side of the sliding cavity (22). The inner ends of the pair of sealing rings (17) are stuck in the groove on the outer cylindrical side of the thick valve rod (2) and are slidably connected to the inner cylindrical side of the sliding cavity (22). A valve handle (3) is provided at the right end of the thick valve rod (2). The middle left side of the valve handle (3) is fixedly connected to the right end of the thick valve rod (2). A valve core rod (14) is provided at the left end of the thick valve rod (2). The right end of the valve core rod (14) is fixedly connected to the left end of the thick valve rod (2). A valve core body (13) is provided at the left end of the valve core rod (14). The valve core body (13) is sleeved on the left end of the valve core rod (14). A valve core fixing ring (15) is provided on the right side of the valve core body (13).The valve core body (13) is fixed to the left end of the valve core rod (14) by a valve core fixing ring (15). A frustum-shaped protrusion is provided on the left side of the valve core body (13), the maximum diameter of which is equal to the valve core hole (19). A polytetrafluoroethylene (PTFE) gasket (11) is provided between the intermediate partition plate (20) and the valve core body (13). The left end of the PTFE gasket (11) is fixedly connected to the intermediate partition plate (20). The left side of the valve core body (13) abuts against the right end of the PTFE gasket. A PTFE fixing tube (12) is provided on the right side of the PTFE gasket (11), the left end of which is fixedly connected to the PTFE gasket (11). The outer cylindrical side of the PTFE fixing tube (12) is fixedly connected to the inner cylindrical side of the liquid storage cavity (21).

2. The sampling device for chemical analysis according to claim 1, characterized in that: The lower end of the liquid storage chamber (21) is provided with a connecting tube (4) on the right side. The upper end of the connecting tube (4) is fixed to the lower end of the upper valve body (1) and communicates with the lower end of the liquid storage chamber (21). The lower end of the connecting tube (4) is provided with a right suction tube assembly. The upper end of the suction tube assembly is fixed to and communicates with the lower end of the connecting tube (4) by a thread.

3. The sampling device for chemical analysis according to claim 2, characterized in that: The suction tube assembly includes a connecting bend (5), the upper end of which is fixed and connected to the lower end of the connecting thin tube (4) by a thread, a short suction tube (6) is provided at the right end of the connecting bend (5), the left end of which is fixed and connected to the right end of the connecting bend (5), and a long suction tube (7) is provided on the lower right side of the short suction tube (6), the upper end of which is fixed and connected to the right end of the short suction tube (6) by the connecting bend (5).

4. A sampling device for chemical analysis according to claim 1, characterized in that: The pressure cap (9), PTFE pad (11), PTFE fixing tube (12), valve core body (13), valve core rod (14), valve core fixing ring (15), pressure groove (18), valve core hole (19), intermediate partition (20), liquid storage cavity (21), and sliding cavity (22) are all coaxially arranged with the upper valve body (1) and the lower valve body (8).

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