CN207423615U - Variable gas inlet connecting mechanism - Google Patents

Abstract

The utility model relates to a variable gas inlet connection mechanism, which belongs to the technical field of gas inlet connectors, and includes a self-locking quick connector, which is composed of a female connector and a male connector, corresponding to the male connector. The air end is provided with a connection block, and the left and right ends of the connection block are respectively provided with a cylindrical structure connector and a needle seat for installing a sampling needle for sternal puncture. The air intake end of the connection block, the connection head and the needle seat are provided with an air intake channel for the connection of the sampling needle and the male joint. The utility model has a simple structure and can be connected with the traditional ball mill gas tank and the new ball mill gas tank when in use, effectively reducing the production cost and facilitating daily operation.

Description

A variable gas intake connection mechanism

technical field

The utility model relates to a variable gas inlet connection mechanism, which belongs to the technical field of gas inlet connectors.

Background technique

At present, the well-known standard documents GB/T23249-2009, AQ1046-2007 "Measurement Method of Coal Seam Gas Content During Geological Exploration Period" stipulate that when the traditional ball mill gas tank is used for degassing coal samples, the degasser uses a vacuum degassing device, connected to The tank and the vacuum degassing device use a 16-gauge sternal puncture needle. After the degassing device is vacuumed, the puncture needle is inserted into the tank body with the sealing rubber pad on the upper part, and the tank body is degassed.

Inspired by Wang Xiandeng's utility model patent No. CN88201083 self-locking quick connector on August 24, 1988, the inventor improved the traditional ball mill gas tank, mainly by setting it on the sealing cover of the ball mill gas tank The male joint part of the self-locking quick joint is removed, so that when in use, it effectively makes up for the deficiencies of the traditional ball mill gas tank, such as air leakage and water leakage.

But at the site, the traditional ball mill gas tank has been completed and put into production. If you want to replace the traditional ball mill gas tank, the production cost will be greatly increased. This can only be done after the need to increase or the new plant uses the above improvements The new ball mill gas tank. If this is the case of the increase, since the current gas degassing equipment uses a puncture needle to connect the gas tank, it is impossible to use the same air inlet to realize the traditional ball milling gas tank without changing the structure of the gas degassing equipment. Therefore, it is necessary to design a connection mechanism that can be connected with both the traditional ball mill gas tank and the new ball mill gas tank, so as to reduce production costs and facilitate operation.

Utility model content

Aiming at the above problems, the utility model provides a variable gas intake connection mechanism, which has a simple structure and can be connected with both the traditional ball mill gas tank and the new ball mill gas tank, which effectively reduces the production cost and It is convenient for normal operation.

The technical scheme that the utility model takes is:

The variable gas intake connection mechanism includes a self-locking quick connector, the self-locking quick connector is composed of a female connector and a male connector, and is characterized in that a connecting block is provided at the inlet end of the corresponding male connector, The left and right ends of the connection block are respectively equipped with a cylindrical structure connector and a needle seat for installing a sternal puncture needle. The needle seat is installed with a sample needle. The block, the connecting head and the needle seat are provided with an air inlet channel for the connection of the sampling needle and the male joint.

In order to protect the injection needle and prevent the injection needle from falling off during use, thereby causing air leakage, it is preferable that the connecting block near the end of the injection needle is covered with a fixed protection cover for the fixed protection of the injection needle. The fixed protection cover is Bucket structure with bottom, its open end is threadedly connected with the connection block, the needle shaft part of the sampling needle passes through the bottom of the bucket, and there is a groove matching the connecting seat of the sampling needle at the bottom of the bucket, corresponding to the sampling needle The needle bar of the bucket is provided with a through hole for the needle bar to pass through at the bottom of the barrel. When in use, the sampling needle will not be washed out due to excessive internal pressure.

In order to further improve the airtightness of the utility model, reduce the number of mold openings, and control the cost reasonably, the connecting block, the connecting head and the needle seat are of an integral structure.

In order to facilitate connection and disassembly, the connection head and the male joint are threaded.

In order to prevent hands from slipping when used to fix the protective cover, the fixed protective cover is provided with anti-skid lines.

In order to effectively prevent the root of the sampling needle from being bent too much under force during use, thereby causing damage to the sampling needle, the diameter of the through hole is 0.5 mm to 1 mm larger than the outer diameter of the needle shaft.

Compared with the prior art, the beneficial effects brought by the utility model are mainly:

The utility model has a simple structure and can be connected not only with the traditional ball mill gas tank but also with the new ball mill gas tank during use, which effectively reduces the production cost and facilitates daily operation. Under the action of the fixed protective sleeve, the sampling needle will not be washed out due to excessive internal pressure, thus ensuring that there will be no air or water leakage when the traditional ball mill gas tank is connected and used.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the three-dimensional structure schematic diagram of connecting block, connecting head and needle seat in the utility model (intake channel is not drawn);

Fig. 3 is a schematic diagram of the structure of the fixed protective cover.

In the figure: 1. Female connector 2. Male connector 3. Connection block 4. Air intake channel 5. Injection needle 6. Fixed protective cover 7. Needle seat 8. Connector 9. Through hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Embodiment one

As shown in Figure 1, Figure 2, and Figure 3, a variable gas intake connection mechanism includes a self-locking quick connector. The self-locking quick connector is composed of a female connector 1 and a male connector 2, corresponding to the male connector 2. The air inlet end is provided with a connecting block 3, and the left and right ends of the connecting block 3 are respectively provided with a connecting head 8 of a cylindrical structure and a needle seat 7 for installing a sampling needle 5 for sternal puncture, on which the sampling needle 5 is installed , the connector 8 is mounted on the inlet end of the male connector 2, and the inlet channel 4 for connecting the sampling needle 5 to the male connector 2 is opened on the connection block 3, the connector 8 and the needle seat 7.

In this embodiment, the connecting block 3 close to the end of the sampling needle 5 is covered with a fixed protective cover 6 for fixed protection of the sampling needle 5. The fixed protective cover 6 is a barrel-shaped structure with a bottom, and its open end is connected to the connecting block. 3 threaded connection, the needle shaft part of the sampling needle 5 passes through the bottom of the bucket, and a groove matching the connecting seat of the sampling needle 5 is opened at the bottom of the bucket, and the needle shaft corresponding to the sampling needle 5 is provided with a groove at the bottom of the bucket for The through hole 9 through which the needle bar passes; the connecting block 3, the connecting head 8 and the needle seat 7 are integral structures; the connecting head 8 and the male joint 2 are threaded; the fixed protective cover 6 is provided with Anti-slip lines; the diameter of the through hole 9 is 0.5 mm larger than the outer diameter of the needle shaft; the needle seat 7 is a cone structure.

During use, under the action of the fixed protective cover 6, the sampling needle 5 is tightly pressed on the needle seat 7, which ensures that the sampling needle 5 and the needle seat 7 are tightly connected, and makes the connection of the sampling needle more stable and reliable. The airtightness in the experimental process is guaranteed; while in the prior art, the No. 16 sternal puncture needle is directly inserted into the latex tube for connection, the connection is not tight, and it is inconvenient when the needle is inserted into the gas tank.

In application, the female head 1 is connected to a metal pipe fitting with several tapered sealing ports, and then connected to the gas degassing equipment inlet pipe, so that it can be connected to the traditional ball mill gas tank and the new ball mill in use. The gas tank connection makes the operation easier.

Embodiment two

On the basis of the first embodiment, the diameter of the through hole 9 is changed to be 0.8mm larger than the outer diameter of the needle shaft. Others are the same as embodiment one.

Embodiment three

On the basis of the first embodiment, the diameter of the through hole 9 is changed to be 1 mm larger than the outer diameter of the needle shaft. Others are the same as embodiment one.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. A variable gas intake connection mechanism, including a self-locking quick connector, the self-locking quick connector is composed of a female connector (1) and a male connector (2), and is characterized in that: the corresponding male connector (2) The air inlet end is provided with a connection block (3), and the left and right ends of the connection block (3) are respectively provided with a cylindrical structure connection head (8) and a needle seat (7) for installing a sternal puncture needle (5) , the injection needle (5) is installed on the needle seat (7), the connector (8) is worn on the air inlet of the male connector (2), and the connection block (3), the connector (8) and the needle seat (7) ) is provided with an air inlet channel (4) for connecting the sampling needle (5) to the male connector (2). 2. A variable gas inlet connection mechanism as claimed in claim 1, characterized in that: the connection block (3) near the end of the sampling needle (5) is covered with a cover for fixing the sampling needle (5). The fixed protective sleeve (6) for protection, the fixed protective sleeve (6) is a bucket-shaped structure with a bottom, its open end is threadedly connected with the connecting block (3), the needle shaft part of the sampling needle (5) passes through the bottom of the bucket, A groove matching the connecting seat of the sampling needle (5) is provided at the bottom of the bucket, and a through hole (9) for the needle bar to pass through is provided at the bottom of the bucket corresponding to the needle bar of the sampling needle (5). 3. A variable gas intake connection mechanism according to claim 1, characterized in that: the connection block (3), the connection head (8) and the needle seat (7) are of an integral structure. 4. A variable gas intake connection mechanism according to claim 2 or 3, characterized in that: the connection head (8) and the male joint (2) are threaded. 5. A variable gas intake connection mechanism according to claim 2, characterized in that: said fixed protective sleeve (6) is provided with anti-skid lines. 6. A variable gas intake connection mechanism according to claim 2, characterized in that: the diameter of the through hole (9) is 0.5 mm to 1 mm larger than the outer diameter of the needle rod.