TWM502122U - Flow dividing valve box having non-returning function of inlet port - Google Patents

Description

Shunt valve box with air inlet check function

The present invention relates to a diverter valve box, and more particularly to an innovative structural type revealer having an air inlet stop function.

According to the design, the diverter valve box is widely used in the shunting parts of some special gas conveying pipeline systems. Since this part is expanded from a single pipeline to a multi-pipe type, the joint structure is numerous. In order to avoid the danger caused by the leakage of special gas in the pipeline from the joint (such as explosion, poisoning, etc.), the industry usually sets the inside of the diverter valve box to be closed, and leaves a gas outlet and a suction The device is connected, so that the gas inside the diverter valve box is timely extracted and then purified, and the air inlet is provided on the side away from the air outlet, so that the external air is relatively introduced when the air outlet sends air, so that the diverter valve box The internal air pressure is kept within a stable range.

However, it is found that the conventional structural type described in the previous paragraph finds that the following problems still exist in the actual use experience: when the exhausting device fails to lock, if the internal pressure of the diverter valve box is caused by the leakage of the pipeline gas, the air pressure rises. The gas will leak back to the outside through the air inlet, thus forming a safety concern and a serious lack.

Therefore, in view of the problems existing in the above-mentioned conventional shunt valve box structure, how to develop an innovative structure with more ideal and practicality, the relevant industry must further strive to develop the goal and direction of breakthrough.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide a diverter valve box with air inlet anti-reverse function. The technical problem to be solved is to develop a new type of diverter valve box structure with more ideal and practicality. The goal is to make breakthroughs in innovation.

The technical feature of the present invention is that the diverter valve box comprises a box body, a shunting pipe unit accommodated in the box body, a pumping port provided at one of the box bodies, and a box provided at the box. One of the other ends of the body; and the inlet is provided with a non-return member, the anti-reverse member is actuatable, and the actuating state includes a closed position and an intake position, and the anti-reverse member is in a normal state The reset position is automatically returned to the closed position, and when the suction port is evacuated to cause the inside of the case to assume a negative pressure state, the check member is attracted by the negative pressure force to actuate to the intake position to introduce the outside air.

With this innovative and unique design, this creation can effectively prevent the air inside the box from being leaked out of the outside by the air inlet, which is a practical improvement of the safety of the use of the diverter valve box.

Please refer to the first, second, third, and fourth figures. This is a preferred embodiment of the diverter valve box with the air inlet stop function. However, these embodiments are for illustrative purposes only. Not subject to this structure. The diverter valve box A includes a box body 10, a diverting line unit 20 accommodated in the box body 10, a pumping port 30 disposed at one of the box bodies 10, and another chamber 10 disposed in the box body 10. One of the intake ports 40; and wherein the intake port 40 is provided with a non-return member 50, the anti-return member 50 is actuatable, and the actuated state includes a closed position (as shown in FIG. 2) and An intake position (as shown in FIG. 4), the check member 50 automatically returns to the closed position in a normal state, and when the air suction port 30 performs air suction to cause a negative pressure state inside the casing 10, The check member 50 is attracted to the intake position by the suction of the negative pressure to introduce the outside air.

As shown in the first and second figures, the anti-reverse member 50 of the air inlet 40 is formed by a pendulum piece 51, and the top end of the pendulum piece 51 is pivoted by a pivoting portion 52. At the air inlet 40, the bottom end of the pendulum body 51 is placed in a state of being suspended from the air inlet 40, and when the air suction port 30 is evacuated, the inside of the casing 10 is in a negative pressure state. The bottom end of the pendulum piece 51 is attracted by the internal negative pressure of the casing 10 to swing inward.

With the above structural composition design, the operation of the present invention is explained as follows: Taking the state disclosed in FIGS. 1 and 2 as an example, when the inside of the casing 10 is in a general air pressure state, the tilting member 50 is tilted. The bottom end of the sheet body 51 is vertically slanted and abuts against the air inlet 40. Therefore, if there is gas released from the branch line unit 20 inside the casing 10, the gas can only be The suction port 30 is led out and does not leak out from the air inlet 40; then, as shown in Figs. 3 and 4, when the air suction port 30 is evacuated (as indicated by the arrow L1 in Fig. 3; the pumping action When the inside of the casing 10 is in a negative pressure state by the suction device connected to the outer end of the suction port 30, the bottom end of the pendulum body 51 of the non-return member 50 is subjected to a negative pressure. The force is attracted to the inner swing (as indicated by arrow L2 in Fig. 4) to the intake position to introduce outside air, and the purpose of introducing the outside air at this time is mainly to let the air inside the casing 10 It is possible to generate a smooth convection effect of one in and one out, so as to fully release the gas released from the split line unit 20 inside the casing 10. Out while maintaining the internal pressure of the tank 10 normal stable state.

As shown in FIGS. 5 and 6, the anti-reverse member 50 provided in the air inlet 40 may be formed by a plurality of pendulum sheets 51B, and the pendulum sheets 51B are arranged in a vertical relationship. The top end of the pendulum piece 51B is pivotally assembled to the air inlet 40 by a pivoting portion 52B, and the bottom end of each pendulum piece 51B is suspended from the bottom to close the air inlet 40, and when the air inlet is closed, When the interior of the box 10 is in a negative pressure state, the bottom end of each of the pendulum sheets 51B is attracted by the internal negative pressure of the casing 10 and swings inward (as shown by the arrow L3 in Fig. 6). ).

The backing member 50 may be provided inside or outside the air inlet 40. For this part, please refer to the reverse member 50 as shown in Figs. 2 and 4, which is an embodiment set inside the air inlet 40, and as shown in Fig. 7, the reverse member 50 is provided at the intake. The implementation type outside the port 40.

Efficacy description: The "distribution valve box with air inlet back function" disclosed in the present application mainly adds the anti-reverse member through the air inlet, the anti-reverse member is movable and includes a closed position and advance At the gas position, when the suction port is evacuated and the inside of the box is in a negative pressure state, the anti-reverse member is attracted by the negative pressure force to move to the intake position to introduce the external air into an innovative unique design, so that the creation Compared with the prior art, the crucible can effectively prevent the air inside the box from being vented out of the outside by the air inlet, thereby achieving the practical progress of greatly improving the safety of the use of the diverter valve box.

The disclosures of the above embodiments are used to specifically explain the present creation, and although the descriptions are made through specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can understand the spirit of the creation. Changes and modifications are made to the equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧Spread valve box 10‧‧‧Box 20‧‧‧Spray line unit 30‧‧‧Exhaust port 40‧‧‧Air inlet 50‧‧‧Reverse member 51, 51B‧‧‧pendulum Sheet 52, 52B‧‧‧ pivoting

Figure 1 is a plan view of a preferred embodiment of the present authoring structure. Figure 2 is an enlarged view of the inlet portion of Figure 1. Fig. 3 is a plan view showing the inside of the box of the present invention in a negative pressure state. Figure 4 is an enlarged view of the inlet portion of Figure 3. Fig. 5 is a view showing an embodiment in which the inverse member of the present invention is a complex pendulum type. Fig. 6 is a schematic view showing the state of operation of the pendulum plate of Fig. 5. Fig. 7 is a view showing an embodiment in which the reverse member of the present invention is provided outside the intake port.

A‧‧‧Spread valve box

10‧‧‧ cabinet

20‧‧‧Split piping unit

30‧‧‧Exhaust port

40‧‧‧air inlet

50‧‧‧Reverse member

51‧‧‧ pendulum

52‧‧‧ pivotal department

Claims (4)

A diverter valve box having an air inlet anti-reverse function, the diverter valve box comprising a box body, a diverting line unit accommodated in the box body, a pumping port provided at one of the box bodies, and An air inlet of the other part of the casing; and wherein the air inlet is provided with a non-return member, the anti-reverse member is actuatable, and the actuating state comprises a closed position and an intake position, the anti-reverse The member automatically returns to the closed position under normal conditions, and when the air suction port performs air pumping to cause the inside of the box to exhibit a negative pressure state, the check member is attracted by the negative pressure force to actuate to the intake position, Introduce outside air. According to the diverter valve box with the air inlet anti-reverse function described in claim 1, wherein the anti-reverse member of the air inlet is formed by a pendulum piece, the top of the pendulum piece The pivoting portion is pivoted to the air inlet, and the bottom end of the pendulum body is suspended from the weight and abuts against the air inlet. When the air suction port is pumped, the interior of the box is negative. In the pressed state, the bottom end of the pendulum piece is attracted by the negative pressure inside the casing and swings inward. According to the diverter valve box with the air inlet anti-reverse function described in claim 1, wherein the anti-reverse member of the air inlet is composed of a plurality of pendulum sheets, and the pendulum system In the upper and lower configuration relationship, the top ends of each of the pendulum-like sheets are pivoted to the air inlet by a pivoting portion, and the bottom end of each of the pendulum-shaped sheets is suspended in a self-weight to close the air inlet, and When the air suction port performs air suction and the inside of the box body is in a negative pressure state, the bottom end of each of the pendulum type sheets is attracted by the negative pressure force inside the box body and swings inward. A diverter valve box having an intake port back-closing function according to claim 2 or 3, wherein the anti-reverse member is provided inside or outside the intake port.