CN214741771U - Exhaust joint - Google Patents

Abstract

The utility model discloses an exhaust joint, including the joint bolt, the joint bolt is equipped with the inner chamber, the one end that the bolt head was kept away from to the joint bolt is equipped with the intercommunication the air intake of inner chamber, the inner chamber is close to the one end of air intake is equipped with the ventilative thing piece of adaptation, the middle part of joint bolt is equipped with the intercommunication the air exit of inner chamber. The utility model discloses an exhaust connects, the pressure of exhausting can be adjusted as required.

Description

Exhaust joint

Technical Field

The utility model relates to an engine fuel oil system technical field especially relates to an exhaust joint.

Background

In the prior art, a conventional scheme of exhaust on the pressure side of an engine fuel system is an exhaust joint scheme with opening pressure adjustment, and different joint opening pressures are matched with different exhaust pressure requirements to adapt to the exhaust pressure requirements, so that the purpose of exhausting according to requirements is achieved specifically as shown in fig. 3 and 4.

Fig. 3 is a cross-sectional view of an existing vent coupling with cracking pressure adjustment, and fig. 4 is a side view thereof, which has the specific structure: the device comprises a sealing steel ball 1, a spring seat 2, a joint body 3, a spring 4, a sealing washer 5 and a pressure adjusting bolt 6.

The bottom of the joint body 3 is provided with external threads and is connected with parts needing to be exhausted, and an inner hole at the top is provided with internal threads and is connected with a pressure adjusting bolt 6.

One side of the spring 4 is supported on the pressure adjusting bolt 6, the other side of the spring is tightly pressed on the spring seat 2, and the sealing steel ball 1 is tightly pressed on the joint body 3 through the spring seat 2.

The sealing steel ball 1 is matched with the joint body 3 to seal gas. When the gas pressure exceeds the opening pressure value, the sealing steel ball 1 is separated from the joint body 3, and the gas passes through and is discharged from the separated gap.

The sealing gasket 5 is used for sealing gas leaking from the interior of the joint body 3 through the internal thread pair.

The working principle is as follows: when the set exhaust pressure is P, the initial compression distance of the spring 4 is further adjusted by adjusting the position of the pressure adjusting bolt 6, so that the purposes of adjusting the opening pressure of the sealing steel ball 1 to be adaptive to the set exhaust pressure P and exhausting according to the exhaust pressure requirement are achieved. The gas flow path of the exhaust gas is shown in fig. 3.

The disadvantages of the prior art solutions described above: 1. the number of parts is large, and the structure is complex; 2. the consistency and reliability of the spring 4 are high; 3. the pressure adjusting bolt 6 has the risk of loosening and leakage; 4. the production cost is high.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an exhaust joint, the pressure of exhausting can be adjusted as required, and very big reduction part quantity and manufacturing cost promote the reliability.

The utility model discloses take following technical scheme to realize above-mentioned purpose:

the utility model provides an exhaust joint, includes the joint bolt, the joint bolt is equipped with the inner chamber, the one end that the bolt head was kept away from to the joint bolt is equipped with the intercommunication the air intake of inner chamber, the inner chamber is close to the one end of air intake is equipped with the ventilative thing piece of adaptation, the middle part of joint bolt is equipped with the intercommunication the air exit of inner chamber.

Preferably, the air inlet is perpendicular to the air outlet.

Preferably, the exhaust outlets are two and are respectively positioned at two opposite sides of the joint bolt.

Preferably, the gas permeable block is a sintered copper block.

The utility model has the advantages that:

1. the number of parts is small, the structure is simple, and the reliability is high;

2. the cost is low;

3. the matched space requirement is small, and the popularization and the application are convenient.

Drawings

FIG. 1 is a cross-sectional view of an exhaust fitting provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an exhaust fitting provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a prior art exhaust fitting;

fig. 4 is a side view of fig. 3.

In the figure, 1-sealing steel ball, 2-spring seat, 3-joint body, 4-spring, 5-sealing washer, 6-pressure adjusting bolt, 7-joint bolt, 8-inner cavity, 9-air inlet, 10-air permeable block and 11-air outlet.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2 and the detailed description thereof.

Referring to fig. 1 and fig. 2, the present embodiment provides an exhaust joint, which includes a joint bolt 7, the joint bolt 7 has an inner cavity 8, an air inlet 9 communicating with the inner cavity 8 is disposed at one end of the joint bolt 7 away from the bolt head, an adaptive air permeable block 10 is disposed at one end of the inner cavity 8 close to the air inlet 9, and an air outlet 11 communicating with the inner cavity 8 is disposed at the middle portion of the joint bolt 1.

The utility model discloses an exhaust joint is when using, and the external diameter of ventilative thing piece 10 closely cooperates with the internal diameter of joint bolt 7, and the pressure of breathing freely of ventilative thing piece 10 can be adjusted through the hole size of adjusting ventilative thing piece 10 to adapt to supporting different exhaust pressure demands, thereby reach and adjust the same effect of exhaust pressure through spring and adjusting bolt among the prior art scheme. When the internal gas pressure is higher than the ventilation pressure of the ventilation object 10, the internal gas penetrates through the ventilation object 10 from the air inlet 9 and is finally exhausted from the air outlet 11, and the flow path of the gas is shown in fig. 1.

In this embodiment, the air inlet 9 is perpendicular to the air outlet 11, so as to facilitate air exhaust.

In the present embodiment, two air outlets 11 are provided, and are respectively located on opposite sides of the joint bolt 7, so that the speed of air discharge is increased to avoid clogging.

In the present embodiment, the permeable block 10 is a sintered copper block, and the permeable pressure of the sintered copper block can be adjusted by adjusting the pore size of the sintered copper block, so as to adapt to the requirements of different exhaust pressures.

Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (4)

1. The utility model provides an exhaust joint, its characterized in that, includes the joint bolt, the joint bolt is equipped with the inner chamber, the one end that the bolt head was kept away from to the joint bolt is equipped with the intercommunication the air intake of inner chamber, the inner chamber is close to the one end of air intake is equipped with the ventilative thing piece of adaptation, the middle part of joint bolt is equipped with the intercommunication the air exit of inner chamber.

2. An exhaust fitting according to claim 1, wherein said inlet opening is perpendicular to said outlet opening.

3. An exhaust fitting according to claim 1, wherein the exhaust openings are provided in two, one on each of opposite sides of the fitting bolt.

4. A gas outlet fitting according to claim 1, wherein said gas permeable mass is a sintered copper mass.

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