CN211978442U

CN211978442U - Two-way type sampling head for atmospheric sampling detector

Info

Publication number: CN211978442U
Application number: CN202020607394.8U
Authority: CN
Inventors: 庞永河
Original assignee: Suzhou Guocheng Testing Technology Co ltd
Current assignee: Suzhou Guocheng Testing Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-20
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a two-way type sampling head for atmospheric sampling detector, including sampling tube, first sampling head, second sampling head and filter screen frame, the sampling tube switches on along length direction's one end center department and is connected with first sampling head, and first sampling head and sampling tube be the integrated into one piece structure of moulding plastics, be provided with the control valve on the first sampling head, the second sampling head has been pegged graft to first sampling head inside, second sampling head outward appearance wall middle section position department is provided with the internal thread pipe, and internal thread pipe threaded connection is on first sampling head outward appearance wall; the utility model discloses a set up the screen frame in the second sampling head, in the use, rotate the threaded rod and can release the screen frame from the second sampling head automatically, make things convenient for the installation of screen frame upper filter screen, dismantle and clear up.

Description

Two-way type sampling head for atmospheric sampling detector

Technical Field

The utility model relates to an atmospheric sampling technical field especially relates to an atmospheric sampling is two way type sampling heads for detector.

Background

Atmospheric sampling refers to a method for collecting samples of pollutants or polluted air in the atmosphere, wherein the collection method is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to enrich the pollutants with lower concentration in the atmosphere, such as an air extraction method and a filter membrane method, and the collection method is to collect the air containing the pollutants by using a container.

At present, the sampling head for the existing atmospheric sampling detector has a simple structure, can not install a corresponding filter screen according to actual use needs, and then the filter screen is very troublesome to disassemble and install, so that the requirements of users can not be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a two-way sampling head for an atmospheric sampling detector.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a double-way sampling head for an atmospheric sampling detector comprises a sampling tube, a first sampling head, a second sampling head and a filter screen frame;

the center of one end of the sampling pipe along the length direction is in conduction connection with a first sampling head, the first sampling head and the sampling pipe are of an injection molding integrated structure, and a control valve is arranged on the first sampling head;

a second sampling head is inserted into the first sampling head, an internal threaded pipe is arranged at the middle section of the outer surface wall of the second sampling head, the internal threaded pipe is in threaded connection with the outer surface wall of the first sampling head, and a first sealing ring is embedded in the first sampling head on the outer surface wall of the second sampling head;

the welding has the fixed block on the table wall in the one end opening part that first sampling head was kept away from to the second sampling head, the inside of second sampling head is provided with the filter screen frame, threaded connection has the threaded rod on the fixed block, the one end of threaded rod is cup jointed and is fixed with the sleeve pipe, and sleeve pipe and filter screen frame welded fastening.

Preferably, the filter screen frame comprises first annular filter screen frame and second annular filter screen frame, the welding has the spliced pole between first annular filter screen frame and the second annular filter screen frame, the bolt hole has all been seted up on the outer table wall of first annular filter screen frame and second annular filter screen frame along length direction's one end, inlay on the outer table wall of first annular filter screen frame and second annular filter screen frame and establish and install the second sealing washer.

Preferably, the number of the connecting columns is four, the four connecting columns are distributed annularly, and the space between every two adjacent connecting columns is equal.

Preferably, the number of the threaded rods is three, the number of the three threaded rods is three, the three threaded rods are distributed annularly, and the distance between every two adjacent threaded rods is equal.

Preferably, the number of the first sealing rings is three, the three first sealing rings are located on the same horizontal line, and the distance between every two adjacent first sealing rings is equal.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, this atmosphere sampling detector is with two way type sampling head, it has the second sampling head to peg graft in first sampling head, and the internal thread pipe threaded connection of second sampling head through setting up is at first sampling head, sampling threaded connection's mode, make the installation of second sampling head with dismantle very convenient, secondly be provided with the screen frame in the second sampling head, can be used for the installation of filter screen, make this atmosphere sampling detector is with two way type sampling head can filter certain impurity in the air through the appointed filter screen selectivity of installation, reduce the influence of this kind of impurity to gas detection, the accuracy nature of sample gas detection has been improved.

2. The utility model discloses in, this atmosphere sampling is two way type sampling head for detector sets up the filter screen frame in the second sampling head, and at the in-process that uses, the rotation threaded rod can be released the filter screen frame from the second sampling head automatically, makes things convenient for the installation, the dismantlement and the clearance of filter screen frame filter screen.

Drawings

Fig. 1 is a schematic structural diagram of a two-way sampling head for an atmospheric sampling detector according to the present invention;

fig. 2 is a cross-sectional view of a two-way sampling head for an atmospheric sampling detector according to the present invention;

fig. 3 is a schematic diagram of an internal structure of a second sampling head of the two-way sampling head for the atmospheric sampling detector according to the present invention;

fig. 4 is the utility model provides an internal structure schematic diagram of a filtration rack of two way type sampling head for atmospheric sampling detector.

Illustration of the drawings:

1. a sampling tube; 2. a control valve; 3. a first sampling head; 4. a second sampling head; 5. an internally threaded tube; 6. a first seal ring; 7. a sleeve; 8. a filter screen frame; 81. a first annular screen frame; 82. bolt holes; 83. connecting columns; 84. a second annular screen frame; 85. a second seal ring; 9. a fixed block; 10. a threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a two-way sampling head for an atmospheric sampling detector comprises a sampling tube 1, a first sampling head 3, a second sampling head 4 and a filter screen frame 8;

a first sampling head 3 is connected to the center of one end of the sampling tube 1 along the length direction in a conduction mode, the first sampling head 3 and the sampling tube 1 are of an injection molding integrated structure, and a control valve 2 is arranged on the first sampling head 3;

a second sampling head 4 is inserted into the first sampling head 3, an internal threaded pipe 5 is arranged at the middle section of the outer surface wall of the second sampling head 4, the internal threaded pipe 5 is in threaded connection with the outer surface wall of the first sampling head 3, and a first sealing ring 6 is embedded in the first sampling head 3 on the outer surface wall of the second sampling head 4;

the welding has fixed block 9 on the table wall in the one end opening part that first sampling head 3 was kept away from to second sampling head 4, and the inside of second sampling head 4 is provided with filter screen frame 8, and threaded connection has threaded rod 10 on the fixed block 9, and the one end of threaded rod 10 is cup jointed and is fixed with sleeve pipe 7, and sleeve pipe 7 and filter screen frame 8 welded fastening.

The filter screen holder 8 is composed of a first annular filter screen holder 81 and a second annular filter screen holder 84, a connecting column 83 is welded between the first annular filter screen holder 81 and the second annular filter screen holder 84, bolt holes 82 are formed in the outer surface wall of one end of the first annular filter screen holder 81 and the outer surface wall of one end of the second annular filter screen holder 84 in the length direction, and a second sealing ring 85 is installed on the outer surface wall of the first annular filter screen holder 81 and the outer surface wall of the second annular filter screen holder 84 in an embedded mode.

The connecting columns 83 are four in number, the four connecting columns 83 are distributed annularly, the space between every two adjacent connecting columns 83 is equal, the threaded rods 10 are three in number, the three threaded rods 10 are distributed annularly, and the space between every two adjacent threaded rods 10 is equal.

The first sealing rings 6 are arranged in three, the three first sealing rings 6 are located on the same horizontal line, the distance between every two adjacent first sealing rings 6 is equal, and the first sealing rings 6 are arranged to improve the sealing performance of the joint of the second sampling head 4 and the first sampling head 3.

The working principle is as follows: when the double-way sampling head for the atmosphere sampling detector is used, the threaded rod 10 can be rotated forwards firstly, the filter screen frame 8 arranged in the second sampling head 4 is pushed out from the second sampling head 4, through the arrangement of the first annular filter screen frame 81 and the second annular filter screen frame 84 which are arranged on the filter screen frame 8 and are matched with the bolt holes 82, the screen is fixed to the first and second

annular screen frames

81 and 84 by fixing bolts, then the threaded rod 10 is rotated reversely, the filter net rack 8 is pulled to the inside of the second sampling head 4, at the moment, the second sampling head 4 is inserted into the first sampling head 3, the second sampling head 4 is rotated, make the internal thread pipe 5 threaded connection that sets up on the second sampling head 4 on the exterior wall of first sampling head 3, accomplish the second sampling head 4 and be connected fixedly between first sampling head 3, alright used this moment.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A two-way sampling head for an atmospheric sampling detector is characterized by comprising a sampling tube (1), a first sampling head (3), a second sampling head (4) and a filter screen frame (8);

a first sampling head (3) is connected to the center of one end of the sampling tube (1) along the length direction in a conduction mode, the first sampling head (3) and the sampling tube (1) are of an injection molding integrated structure, and a control valve (2) is arranged on the first sampling head (3);

a second sampling head (4) is inserted into the first sampling head (3), an internal threaded pipe (5) is arranged at the middle section of the outer surface wall of the second sampling head (4), the internal threaded pipe (5) is in threaded connection with the outer surface wall of the first sampling head (3), and a first sealing ring (6) is embedded in the outer surface wall of the second sampling head (4) positioned in the first sampling head (3);

the welding has fixed block (9) on the table wall in the one end opening part that first sampling head (3) was kept away from in second sampling head (4), the inside of second sampling head (4) is provided with filter screen frame (8), threaded connection has threaded rod (10) on fixed block (9), the one end of threaded rod (10) is cup jointed and is fixed with sleeve pipe (7), and sleeve pipe (7) and filter screen frame (8) welded fastening.

2. The bi-pass sampling head for the atmospheric sampling detector according to claim 1, wherein the filter screen holder (8) is composed of a first annular filter screen holder (81) and a second annular filter screen holder (84), a connecting column (83) is welded between the first annular filter screen holder (81) and the second annular filter screen holder (84), bolt holes (82) are formed in the outer surface wall of one end of the first annular filter screen holder (81) and the second annular filter screen holder (84) along the length direction, and a second sealing ring (85) is installed on the outer surface wall of the first annular filter screen holder (81) and the second annular filter screen holder (84).

3. The dual-way sampling head for the atmospheric sampling detector according to claim 2, wherein the number of the connecting columns (83) is four, the four connecting columns (83) are distributed annularly, and the distance between two adjacent connecting columns (83) is equal.

4. The bi-pass sampling head for the atmospheric sampling detector according to claim 1, wherein the number of the threaded rods (10) is three, the number of the three threaded rods (10) is three, the three threaded rods (10) are annularly distributed, and the distance between two adjacent threaded rods (10) is equal.

5. The dual-way sampling head for the atmospheric sampling detector according to claim 1, wherein the number of the first sealing rings (6) is three, the three first sealing rings (6) are located on the same horizontal line, and the distances between two adjacent first sealing rings (6) are equal.