CN206973096U - A kind of seal nipple of pressure adjustable - Google Patents

Abstract

The utility model overcomes the shortcomings of the prior art and provides a pressure-adjustable sealing joint, which can ensure that the joint is sealed and can withstand a certain pressure. Reagent tubes are not smooth, etc.; in order to solve the above technical problems, the technical solution adopted by the utility model is: a pressure-adjustable sealing joint, including reagent tubes, pressure heads, pressure pads, O-rings and receiving bodies. One end of the reagent tube is provided with a flange, and the pressure head, pressure pad and O-ring are sequentially set on the outer wall of the reagent tube, and the pressure head is correspondingly inserted on the receiving body. The insertion depth controls the pressure between the O-ring and the flange; the utility model can be widely used in the field of water quality monitors.

Description

A pressure-adjustable sealing joint

technical field

The utility model relates to a pressure-adjustable sealing joint, which belongs to the technical field of water quality monitors.

Background technique

The water quality monitor transports various reagents through reagent tubes, and its joints must meet both sealing requirements and pressure resistance requirements. The possible consequences of leakage include: deviation of measurement results, damage to the monitor, and injury to the operator.

At present, most of the joints in the water quality monitor are sealed by cone seals, and the deformation of the reagent tube is used to achieve pressure resistance, but the sealing effect and pressure resistance effect are not ideal. When the sealing force is small, the reagent tube can fall off under a small force; when the sealing force is large, the excessive deformation of the reagent tube will cause the reagent tube to be blocked.

Utility model content

The utility model overcomes the shortcomings of the prior art and provides a pressure-adjustable sealing joint, which can ensure that the joint is sealed and can withstand a certain pressure. The reagent tube is not smooth and so on.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a pressure-adjustable sealing joint, including a reagent tube, a pressure head, a pressure pad, an O-ring and a receiving body, and one end of the reagent tube is set There is a flange, the pressure head, pressure pad and O-ring are sequentially set on the outer wall of the reagent tube, the pressure head is correspondingly inserted on the receiving body, and the O-ring is controlled by adjusting the insertion depth of the pressure head and the receiving body pressure between the flange.

The end of the receiving body is hollow and stepped, and the reagent tube, pressure head, pressure pad and O-ring are correspondingly inserted into the end of the receiving body, and the cavity between the O-ring and the receiving body is for receiving light. hole segment.

The receiving body and the pressure head are threaded to adjust the insertion depth of the pressure head at the end of the receiving body.

Both ends of the reagent tube are provided with flanges.

Compared with the prior art, the utility model has the beneficial effects that: the utility model can simply realize the sealing of the joint, can withstand a certain pressure, and will not cause the reagent tube to be blocked due to the increase of the withstand pressure.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described further.

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

In the figure: 1 is the reagent tube, 2 is the pressure head, 3 is the pressure pad, 4 is the O-ring, 5 is the receiving body, 6 is the flange, 7 is the light hole section, and 8 is the thread.

Detailed ways

As shown in Figure 1, a pressure-adjustable sealing joint of the present invention includes a reagent tube 1, a pressure head 2, a pressure pad 3, an O-ring 4 and a receiving body 5, and one end of the reagent tube 1 is provided with There is a flange 6, the pressure head 2, pressure pad 3 and O-ring 4 are sequentially set on the outer wall of the reagent tube 1, and the pressure head 2 is correspondingly inserted on the receiving body 5, by adjusting the pressure head 2 and the receiving body The insertion depth of 5 controls the pressure between the O-ring 4 and the flange 6.

The end of the receiving body 5 is hollow and stepped, and the reagent tube 1, pressure head 2, pressure pad 3 and O-ring 4 are correspondingly inserted into the end of the receiving body 5, and the O-ring 4 and the receiving body 5 The cavity between them is to receive the light hole segment 7 .

The receiving body 5 and the pressing head 2 adjust the insertion depth of the pressing head 2 at the end of the receiving body 5 through the thread 8 .

Both ends of the reagent tube 1 are provided with flanges 6 .

The working principle of the utility model: in the utility model, the end of the reagent tube 1 has a flange 6, and the O-ring 4, the pressure pad 3, and the pressure head 2 are sequentially placed on the reagent tube 1, so that the O-ring 4 is located on the flange. 6 and the middle of pressure pad 3. When the pressure head 2 is screwed onto the receiving body 5 , the pressure pad 3 , the O-ring 4 and the reagent tube 1 are also fixed on the receiving body 5 . When the indenter 2 is tightened, the O-ring 4 is deformed under pressure, and its outer side is close to the inner wall of the receiving body 5, and its inner side is close to the wall of the reagent tube 1, thereby realizing sealing. Because the end of the reagent tube 1 contains a flange 6, the reagent tube 1 is not easy to fall off; at the same time, the presence of the flange 6 also enhances the rigidity of the reagent tube 1, so that the reagent tube 1 is not easy to deform under the extrusion of the O-ring 4, thereby Ensure the unimpeded flow of the reagent tube.

The working process of the utility model: the receiving body 5 receiving hole of the utility model includes two sections, the light hole section 7 and the threaded hole section, the flange 6, the O-ring 4, and the pressure pad 3 at the end of the reagent tube 1 extend into the To accept the light hole section 7, the pressure head 2 is screwed into the threaded hole section, and the front section of the pressure head 2 is pressed onto the pressure pad 3. Continue to screw in the pressure head 2, the O-ring 4 is deformed under the pressure, its inner side is close to the reagent tube 1, and the outer side is close to the receiving light hole section 7 to realize sealing. The pressure pad 3 can prevent the O-ring 4 from being damaged or broken under extrusion, and at the same time, the pressure pad 3 can prevent the O-ring 4 and the special reagent tube 1 from being driven to rotate when the indenter 2 is screwed in. When the seal is not good, continue to screw in the pressure head 2 to improve the sealing effect. In addition, the flange 6 can prevent the reagent tube 1 from falling off, and enhance the rigidity of the contact sealing part between the reagent tube 1 and the O-ring 4 .

The above embodiments of the utility model have been described in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (4)

1. A kind of 1. seal nipple of pressure adjustable, it is characterised in that：Including Reagent Tube（1）, pressure head（2）, pressure pad（3）, O-ring （4）And undertaking body（5）, the Reagent Tube（1）One end end set have flange（6）, the pressure head（2）, pressure pad（3）With it is O-shaped Circle（4）Reagent Tube is sleeved on successively（1）On outer wall, the pressure head（2）It is corresponding to be inserted into undertaking body（5）On, by adjusting pressure head （2）With undertaking body（5）Grafting depth control O-ring（4）With flange（6）Between pressure.
2. A kind of 2. seal nipple of pressure adjustable according to claim 1, it is characterised in that：The undertaking body（5）End In hollow stepped, the Reagent Tube（1）, pressure head（2）, pressure pad（3）And O-ring（4）Corresponding insertion undertaking body（5）End Portion, the O-ring（4）And undertaking body（5）Between cavity for accept unthreaded hole section（7）.
3. A kind of 3. seal nipple of pressure adjustable according to claim 1 or 2, it is characterised in that：The undertaking body（5）With Pressure head（2）Pass through screw thread（8）Adjust pressure head（2）In undertaking body（5）The grafting depth of end.
4. A kind of 4. seal nipple of pressure adjustable according to claim 3, it is characterised in that：The Reagent Tube（1）Two End is provided with flange（6）.