CN217381776U - Pressure reducing valve with gas flow regulating function - Google Patents

Abstract

The utility model discloses a relief pressure valve that has gas flow regulatory function, including the upper cover, set up in the lower cover of upper cover bottom, set up the diaphragm subassembly between upper cover and lower cover, one side on upper cover top is equipped with the air inlet, and the opposite side is equipped with air outlet channel, air outlet channel is last be equipped with the inside communicating mounting hole of air outlet channel, the mounting hole internal rotation is connected with flow control spare, flow control spare's bottom is equipped with the regulating valve core that extends to air outlet channel inside, be equipped with the gas pocket on the regulating valve core, the last position department that corresponds to regulating valve core of air outlet channel is equipped with the inside communicating gas outlet of air outlet channel. This practicality can adjust in order to adjust the relative angle between case and the inside gas flow direction of air outlet channel through rotating flow control spare when using to reach the effect of adjusting air outlet channel's gas flow, the practicality is high, is favorable to the popularization and application of marketization.

Description

A pressure reducing valve with gas flow adjustment function

technical field

The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve with a gas flow regulating function.

Background technique

The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically keep the outlet pressure stable. It should be widely used in the market. Among them, the generator set driven by the reciprocating internal combustion engine generally uses natural gas or liquefied gas as fuel during application. At this time, due to the high internal pressure of the gas tank, it is necessary to install between the gas tank and the generator set driven by the reciprocating internal combustion engine. Pressure reducing valve. At the same time, in order to more conveniently and quickly adjust the gas flow rate of the gas tank during use, a gas flow switch is generally set between the pressure reducing valve and the generator set driven by the reciprocating internal combustion engine. The installation not only increases the overall installation cost of the equipment, but also increases the number of connection points on the internal pipelines of the system because the pressure reducing valve and the gas flow switch are connected to the overall system separately, thus greatly improving the leakage rate of the equipment during use. risk and therefore cannot meet people's demands.

Utility model content

Aiming at the technical problem that the conventionally used pressure reducing valve in the prior art cannot control the gas flow during application; the utility model proposes a pressure reducing valve with a gas flow adjustment function, so as to realize that the pressure reducing valve can be applied according to the The technical effect of adjusting the gas flow is required.

In order to achieve the above object, the present utility model adopts the following technical solutions:

A pressure reducing valve with a gas flow adjustment function, comprising an upper cover, a lower cover arranged at the bottom end of the upper cover, a diaphragm assembly arranged between the upper cover and the lower cover, and one side of the top of the upper cover is provided with an inlet. The air outlet is provided with an air outlet channel on the other side. The air outlet channel is provided with an installation hole that communicates with the inside of the air outlet channel. A flow regulating member is rotatably connected in the installation hole, and the bottom end of the flow regulating member is provided with an extension To the regulating valve core inside the air outlet channel, the regulating valve core is provided with air holes, and the position corresponding to the regulating valve core on the air outlet channel is provided with an air outlet communicating with the inside of the air outlet channel.

On the basis of the above technical solutions, the utility model can also be improved as follows.

As a preferred technical solution of the present invention, an air outlet cavity is provided between the upper cover and the diaphragm assembly, and an air outlet adjustment mechanism is arranged inside the air outlet cavity, and the air outlet adjustment mechanism includes a lever, an adjustment spring and a plug. , the lever is rotatably connected to the inner side wall of the upper cover through the lever shaft, one end of the adjustment spring is clamped to the inner side wall of the upper cover, and the other end of the adjustment spring is clamped to one end of the lever so that the corresponding end of the lever abuts the membrane On the diaphragm assembly, the plug is fixed to the other end of the lever and abuts against and seals the air inlet under the action of the adjusting spring, a back pressure cavity is provided between the lower cover and the diaphragm assembly, and the lower cover is There is a reserved hole communicating with the back pressure cavity.

As a preferred technical solution of the present invention, the top end of the flow regulating member extends out of the installation hole, and the top end of the flow regulating member is provided with an indicating finger screw part.

As a preferred technical solution of the present invention, the adjustment valve core is provided with a fine-tuning hole, the top of the fine-tuning hole penetrates the flow regulating member and the indicating hand screw part in sequence, and the fine-tuning hole is screwed with a fine-tuning hole. a screw, and a first sealing ring is sleeved on the fine adjustment screw at the position of the indicating finger-tightening part.

As a preferred technical solution of the present invention, a solenoid valve is provided on the air inlet.

As a preferred technical solution of the present invention, a second sealing ring is provided between the outer side wall of the flow regulating member and the inner side wall of the installation hole.

As a preferred technical solution of the present invention, the air outlet channel and the upper cover are integrally formed.

As a preferred technical solution of the present invention, the regulating valve core is a rectangular sheet-like structure, and the diameter of the air hole is 1/5-1/2 of the length of the short side of the regulating valve core.

As a preferred technical solution of the present invention, an end of the regulating valve core away from the flow regulating member is provided with a mounting seat, and the mounting seat is rotatably connected to the inner wall of the air outlet channel.

As a preferred technical solution of the present utility model, the flow regulating member, the regulating valve core, the indicating finger screw portion and the mounting seat are integrally formed.

The beneficial effects of the present utility model are:

The utility model can adjust the relative angle between the regulating valve core and the flow direction of the gas inside the air outlet by arranging the flow regulating member on the air outlet channel, so as to achieve the effect of adjusting the gas flow rate of the air outlet channel by rotating the flow regulating member during use. At the same time, the integrated molding structure between the air outlet channel and the upper cover of the present invention can reduce the connection points on the internal pipeline of the whole system during use, thereby reducing the air leakage risk of the system pipeline.

Description of drawings

1 is a top view of a pressure reducing valve with a gas flow regulating function of the present invention;

FIG. 2 is a schematic front cross-sectional view of a pressure reducing valve with a gas flow adjustment function of the present invention;

3 is a schematic structural diagram of a flow regulating member and a regulating valve core of the present invention;

4 is a schematic diagram of the state between the regulating valve core and the air outlet channel when the utility model is in a large flow state;

5 is a schematic diagram of the state between the regulating valve core and the air outlet channel when the utility model is in a small flow state; the symbols in the figure are explained:

Upper cover 1, lower cover 2, diaphragm assembly 3, air inlet 4, air outlet channel 5, flow regulating member 6, regulating valve core 7, air hole 8, air outlet 9, mounting seat 10, air outlet cavity 11, lever 12, Adjusting spring 13 , plug 14 , back pressure cavity 15 , reserved hole 16 , indicating hand screw 17 , fine adjustment hole 18 , fine adjustment screw 19 , first sealing ring 20 , solenoid valve 21 , and second sealing ring 22 .

Detailed ways

The present utility model will now be described in further detail in conjunction with the accompanying drawings.

In order to solve the technical problem in the prior art that the pressure reducing valve cannot switch the gas flow direction during application, the utility model proposes a pressure reducing valve with a gas flow adjustment function.

The present invention provides the following preferred embodiments

As shown in FIG. 1 to FIG. 5 , a pressure reducing valve with gas flow adjustment function includes an upper cover 1 , a lower cover 2 arranged at the bottom end of the upper cover 1 , and a membrane arranged between the upper cover 1 and the lower cover 2 The diaphragm assembly 3, in this embodiment, the connection method between the upper cover 1 and the lower cover 2 adopts the connection method commonly used in the prior art known to those skilled in the art, the diaphragm assembly 3 Also adopted is the diaphragm assembly conventionally used in the prior art well-known to those skilled in the art, and its specific structure, connection mode and working principle are also common knowledge well-known to those skilled in the art, and the specific structure of the above-mentioned components The connection method does not involve the improvement point of the present invention, so it will not be repeated; in the present invention, one side of the top of the upper cover 1 is provided with an air inlet 4, and the other side is provided with an air outlet 5 , In this embodiment, the air outlet channel 5 and the upper cover 1 are integrally formed; the air outlet channel 5 is provided with an installation hole (not marked in the figure) that communicates with the air outlet channel 5. The installation hole A flow regulating member 6 is rotatably connected inside, and the bottom end of the flow regulating member 6 is provided with a regulating valve core 7 extending to the inside of the air outlet channel 5. The regulating valve core 7 is a rectangular sheet-like structure. The bottom end of the regulating valve core 7 is rotatably connected to the air outlet channel 5; specifically, the end (ie the bottom end) of the regulating valve core 7 away from the flow regulating member is provided with a mounting seat 10, and the mounting seat 10 is rotatably connected to the gas outlet On the inner wall of the channel 5; in this embodiment, the flow regulating member 6, the regulating valve core 7 and the mounting seat 10 are integrally formed.

The regulating valve core 7 is provided with an air hole 8, and the diameter of the air hole 8 is 1/5 to 1/2 of the length of the short side of the regulating valve core 7; the air outlet channel 5 corresponds to the position of the regulating valve core 7 There is an air outlet 9 that communicates with the air outlet channel 5; during use, when a small flow of gas flux is required (as shown in Figure 5), the regulating valve core 7 is rotated to just block the air outlet channel 5 and the air outlet 9. At this time, the gas between the air outlet channel 5 and the air outlet 9 can only be transported through the air hole 8, and the flow rate is small; when a large flow rate is required (as shown in Figure 4), the regulating valve core 7 is rotated to the air outlet channel. The gas between 5 and the air outlet 9 flows in parallel to each other. At this time, the gas between the air outlet channel 5 and the air outlet 9 can pass through the side of the regulating valve core 7, and the flow rate is large, so as to achieve the effect of regulating the flow rate.

In this embodiment, an air outlet cavity 11 is provided between the upper cover 1 and the diaphragm assembly 3, and an air outlet adjustment mechanism is arranged inside the air outlet cavity 11. The air outlet adjustment mechanism includes a lever 12, an adjustment spring 13 and a plug. The head 14, the lever 12 is rotatably connected to the inner side wall of the upper cover 1 through a lever shaft, and one end of the adjusting spring 13 is clamped to the inner side wall of the upper cover 1. In this embodiment, specifically, the upper cover 1 A sleeve post is arranged on the inner side wall of the adjusting spring 13. During installation, the top end of the adjusting spring 13 is sleeved on the sleeve post; the other end of the adjusting spring 13 is clamped to one end of the lever 12 to make the corresponding end of the lever 12 abut On the diaphragm assembly 3, in this embodiment, the corresponding end of the lever 12 is provided with a sleeve groove, and the bottom end of the adjustment spring 13 is inserted into the corresponding sleeve groove; the plug 14 It is fixed to the other end of the lever 12 and abuts against and seals the air inlet 4 under the action of the adjusting spring 13. A back pressure cavity 15 is provided between the lower cover 2 and the diaphragm assembly 3, and a There is a reserved hole 16 that communicates with the back pressure cavity 15, and the reserved hole 16 is used to connect the back pressure cavity 15 with the external atmosphere; when in use, the air inlet 4 is connected to an external air source, and the air outlet 9 is connected to the external carrier unit. During the working process, the engine on the carrier unit continuously sucks out the air inside the air outlet chamber 11, so that a negative pressure is formed inside the air outlet chamber 11. At this time, because the back pressure chamber 15 passes through the reserved hole 16 and The external atmosphere is turned on so that the pressure in the back pressure chamber 15 is greater than the pressure in the air outlet chamber 11. At this time, the diaphragm assembly 3 is bent and deformed in the direction of the air outlet chamber 11 to push the end of the lever 12 in contact with the diaphragm assembly 3 upward. The movement makes the plug 14 at the other end of the lever 12 separate from the air inlet 4, and finally the external air source enters the carrier unit through the pressure reducing valve.

In this embodiment, in order to make it easier to observe the flow rate inside the pressure reducing valve, the top end of the flow regulating member 6 extends out of the mounting hole, and the top end of the flow regulating member 6 is provided with an indicating finger screw 17 . In the embodiment, the indicating finger screw portion 17 and the flow regulating member 6 are also integrally formed.

In this embodiment, in order to improve the flux range of small flow during the flow adjustment process, the adjustment valve core 7 is provided with a fine adjustment hole 18, and the top end of the fine adjustment hole 18 penetrates through the flow adjustment member 6 and the indicating finger screw part in turn. 17. A fine-tuning screw 19 is screwed into the inner thread of the fine-tuning hole 18, and a first sealing ring 20 is sleeved on the fine-tuning screw 19 at the position indicating the hand-tightening portion 17; during use, the fine-tuning screw 19 is rotated to adjust Fine-tune the size of the hole 18, so as to achieve the flux size when the gas flow is small;

In this embodiment, in order to further ensure the sealing effect of the air inlet 4 when not in use, the air inlet 4 is provided with a solenoid valve 21; A second sealing ring 22 is provided between the outer side wall of the flow regulating member 6 and the inner side wall of the installation hole.

Finally, it should be noted that these embodiments are only used to illustrate the present utility model and do not limit the scope of the present utility model. In addition, for those skilled in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A pressure reducing valve with a gas flow adjustment function, comprising an upper cover (1), a lower cover (2) arranged at the bottom end of the upper cover (1), and a lower cover (2) arranged between the upper cover (1) and the lower cover (2). The diaphragm assembly (3) between the two parts is characterized in that: one side of the top of the upper cover (1) is provided with an air inlet (4), and the other side is provided with an air outlet (5), and the air outlet (5) ) is provided with a mounting hole that communicates with the inside of the air outlet channel (5), a flow regulating member (6) is rotatably connected in the mounting hole, and the bottom end of the flow regulating member (6) is provided with a bottom end extending to the air outlet channel (5). ) inside the regulating valve core (7), the regulating valve core (7) is provided with an air hole (8), and the air outlet channel (5) is provided with an air outlet channel at the position corresponding to the regulating valve core (7). Internally communicated air outlet (9). 2. A pressure reducing valve with a gas flow adjustment function according to claim 1, characterized in that: an air outlet chamber (11) is provided between the upper cover (1) and the diaphragm assembly (3), so The air outlet chamber (11) is provided with an air outlet adjustment mechanism, the air outlet adjustment mechanism includes a lever (12), an adjustment spring (13) and a plug (14), and the lever (12) is connected to the upper cover through a lever shaft rotatably (1) On the inner side wall, one end of the adjusting spring (13) is clamped to the inner side wall of the upper cover (1), and the other end is clamped to one end of the lever (12) so that the corresponding end of the lever (12) abuts the membrane On the plate assembly (3), the plug (14) is fixed on the other end of the lever (12) and abuts against and seals the air inlet (4) under the action of the adjusting spring (13), and the lower cover (2) ) and the diaphragm assembly (3) are provided with a back pressure cavity (15), and the lower cover (2) is provided with a reserved hole (16) communicating with the back pressure cavity (15). 3. A pressure reducing valve with a gas flow regulating function according to claim 1, characterized in that: the top of the flow regulating member (6) extends out of the mounting hole, and the flow regulating member (6) There is an indicator finger screw part (17) at the top of the . 4. A pressure reducing valve with a gas flow adjustment function according to claim 3, characterized in that: the adjustment valve core (7) is provided with a fine adjustment hole (18), and the fine adjustment hole (18) is provided with a fine adjustment hole (18). The top end penetrates through the flow regulating member (6) and the indicating hand-tightening portion (17) in turn, the fine-tuning hole (18) is screwed with a fine-tuning screw (19) on the inner thread, and the fine-tuning screw (19) is for the indicating hand-tightening portion. A first sealing ring (20) is sleeved at the position of (17). 5 . The pressure reducing valve with gas flow adjustment function according to claim 1 , wherein a solenoid valve ( 21 ) is provided on the air inlet ( 4 ). 6 . 6. A pressure reducing valve with a gas flow regulating function according to claim 1, characterized in that: a second sealing ring (22) is provided between the outer side wall of the flow regulating member (6) and the inner side wall of the mounting hole ). 7 . The pressure reducing valve with a gas flow adjustment function according to claim 1 , wherein the gas outlet channel ( 5 ) and the upper cover ( 1 ) are integrally formed. 8 . 8 . The pressure reducing valve with a gas flow adjustment function according to claim 1 , wherein the regulating valve core ( 7 ) is a rectangular sheet-like structure, and the diameter of the air hole ( 8 ) is adjusted 8 . 1/5～1/2 of the length of the short side of the valve core. 9. A pressure reducing valve with a gas flow regulating function according to claim 4, wherein a mounting seat (10) is provided at one end of the regulating valve core (7) away from the flow regulating member (6), The mounting seat (10) is rotatably connected to the inner wall of the air outlet channel (5). 10. A pressure reducing valve with a gas flow regulating function according to claim 9, characterized in that: the flow regulating member (6), the regulating valve core (7), the indicating finger screw portion (17) and the installation The seat (10) is an integral molding structure.

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