High-precision filtering pressure reducing valve

Abstract

The utility model discloses a high-precision filtering pressure reducing valve which comprises a pressure reducing valve body and a sealing mechanism, a pressure gauge is arranged on the front face of the pressure reducing valve body, an adjusting knob is arranged at the top of the pressure reducing valve body, a mounting plate is fixed above the pressure reducing valve body, a mounting hole is formed in the mounting plate, and the sealing mechanism is arranged in the mounting hole. An inlet is formed in one side of the pressure reducing valve body, an outlet is formed in the other side of the pressure reducing valve body, connecting flanges are fixed to the inlet and the outlet, sealing mechanisms are arranged in the connecting flanges, and the connecting flanges are fixedly connected with connecting pipes through bolts. The connecting flange and the connecting pipe are arranged on the inlet and the outlet, and the sealing mechanism is used together, so that the leakproofness when gas enters from the inlet and is exhausted from the outlet is greatly improved, leakage is prevented, and the precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter pressure reducing valve technical field, specifically, relate to a high accuracy filter pressure reducing valve. BACKGROUND

[0002] Filter pressure reducing valve is a kind of equipment for ensuring the stability of pressure, it is usually used in gas pipeline, such as air, nitrogen, oxygen, hydrogen, liquefied gas, natural gas and other gases, to ensure the stability and safety of gas supply.

[0003] According to the announcement No.CN221610674U discloses a kind of adjustable filter precision fluid pressure reducing valve, including pressure reducing valve body, the top of pressure reducing valve body is fixedly connected with pressure reducing valve top cover, rotatingly connected with rotating adjusting screw in the inside of pressure reducing valve top cover, the outer side of rotating adjusting screw is connected with internal thread slide column, the both sides of internal thread slide column are fixedly connected with limit side pressure block, the utility model has the beneficial effects that: by being provided with sealing cover, filter core, it is realized that by connecting into pipe enters after filtering by filter core and is discharged by connecting out pipe, carries out filtration treatment, by being provided with sharp block, limit card slot, it is realized that the limit card slot of connecting sleeve outside and the sharp block of fixed ring inside are limited in position, the rotation angle of connecting sleeve and rotating top block is limited and handled, avoid the false touch rotation of rotating adjusting screw, prevent the false touch adjustment of pressure reducing valve body and pressure reducing valve adjusting pressure plate.

[0004] But the above-mentioned one kind of adjustable filter precision fluid pressure reducing valve has the following defects:

[0005] There is no sealing mechanism on connecting into pipe and connecting out pipe, when gas enters from connecting into pipe or is discharged from connecting out pipe, it is easy to cause leakage, and the air tightness is poor, which reduces the precision and affects the normal use of pressure reducing valve body.

[0006] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0007] In view of the problems in the related art, the utility model provides a high-precision filter pressure reducing valve to overcome the above technical problems existing in the prior art.

[0008] Therefore, the utility model adopts the following specific technical solutions:

[0009] A high-precision filter pressure reducing valve, comprising a pressure reducing valve body and a sealing mechanism, one side of the pressure reducing valve body is provided with an inlet, the other side of the pressure reducing valve body is provided with an outlet, a connecting flange is fixed on the inlet and the outlet, a sealing mechanism is arranged in the connecting flange, and the connecting flange is fixedly connected with a connecting pipe by bolts.

[0010] The front face of the pressure reducing valve body is provided with a pressure gauge, and the top of the pressure reducing valve body is provided with an adjusting knob.

[0011] The upper portion of the pressure reducing valve body is fixed with a mounting plate, and the mounting plate is provided with a mounting hole.

[0012] The middle portion of the connecting flange is provided with a through pipe matched with the inlet and the outlet, and the connecting flange is provided with a groove matched with the sealing mechanism.

[0013] The sealing mechanism comprises a first flat washer, a first spring washer, a sealing ring, a second spring washer and a second flat washer, the first flat washer, the first spring washer, the second spring washer and the second flat washer are of the same diameter and are made of stainless steel, and the sealing ring is made of rubber.

[0014] The connecting pipe is provided with a plug pipe matched with the through pipe, one end of the connecting pipe is provided with a boss matched with the groove, and one end of the connecting pipe is provided with a fixing ring matched with the connecting flange.

[0015] The fixing holes are annularly arranged on the connecting flange and the fixing ring, and the fixing holes are provided with bolts.

[0016] The utility model discloses the beneficial effect is: through setting up the connecting flange and the connecting pipe and the sealing mechanism's common use on the inlet and the outlet, the airtightness when gas enters from the inlet and discharges from the outlet is greatly improved, prevents the leakage, improves the precision. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is a kind of high-precision filtering pressure reducing valve's overall structure schematic diagram according to the utility model embodiment;

[0019] Figure 2 It is the inlet and connecting flange cooperation schematic diagram of a kind of high-precision filtering pressure reducing valve according to the utility model embodiment;

[0020] Figure 3is a sealing mechanism schematic view of a high-precision filtering pressure reducing valve according to the embodiment of the utility model;

[0021] Figure 4 is a connecting flange schematic view of a high-precision filtering pressure reducing valve according to the embodiment of the utility model;

[0022] Figure 5 is a connecting pipe schematic view of a high-precision filtering pressure reducing valve according to the embodiment of the utility model.

[0023] In the drawing,

[0024] 1, pressure reducing valve body;2, sealing mechanism;3, import;4, connecting flange;5, connecting pipe;6, pressure gauge;7, adjusting knob;8, mounting plate;9, through pipe;10, recess;11, first flat washer;12, first spring washer;13, sealing ring;14, second spring washer;15, second flat washer;16, cannula;17, boss;18, fixed ring;19, fixed hole. DETAILED DESCRIPTION

[0025] To further illustrate the embodiments, the utility model provides with the drawing, these drawings are the part of the utility model disclosure, it mainly used to explain the embodiment, and can cooperate the relevant description of the specification to explain the operating principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn according to the proportion, and similar component symbols are usually used to indicate similar components.

[0026] According to the embodiment of the utility model, a kind of high-precision filtering pressure reducing valve is provided.

[0027] Please refer to the attached drawings of the specification Figures 1-5A high-precision filter pressure reducing valve according to an embodiment of the present invention includes a pressure reducing valve body 1 and a sealing mechanism 2. An inlet 3 is provided on one side of the pressure reducing valve body 1, and an outlet 3 is provided on the other side. A connecting flange 4 is fixed to both the inlet 3 and the outlet. A sealing mechanism 2 is provided inside the connecting flange 4. The connecting flange 4 is fixedly connected to a connecting pipe 5 by bolts. A pressure gauge 6 is provided on the front of the pressure reducing valve body 1. An adjusting knob 7 is provided on the top of the pressure reducing valve body 1. A mounting plate 8 is fixed above the pressure reducing valve body 1, and the mounting plate 8 has mounting holes. A through pipe 9 matching the inlet 3 and the outlet is provided in the middle of the connecting flange 4. A sealing mechanism 2 is provided on the connecting flange 4. The sealing mechanism 2 includes a groove 10 that matches the sealing mechanism 2. The sealing mechanism 2 includes a first flat washer 11, a first spring washer 12, a sealing ring 13, a second spring washer 14, and a second flat washer 15. The first flat washer 11, the first spring washer 12, the second spring washer 14, and the second flat washer 15 have the same diameter and are all made of stainless steel. The sealing ring 13 is made of rubber. The connecting pipe 5 is provided with an insertion tube 16 that matches the through pipe 9. One end of the connecting pipe 5 is provided with a boss 17 that matches the groove 10. One end of the connecting pipe 5 is provided with a fixing ring 18 that matches the connecting flange 4. The connecting flange 4 and the fixing ring 18 are both provided with fixing holes 19 arranged in a ring array. Bolts are provided in the fixing holes 19.

[0028] By using connecting flanges 4 and connecting pipes 5 at the inlet 3 and outlet, along with sealing mechanism 2, the tightness of gas entering from the inlet 3 and exiting from the outlet is greatly improved, preventing leakage and increasing accuracy.

[0029] In use, the first flat washer 11, the first spring washer 12, the sealing ring 13, the second spring washer 14, and the second flat washer 15 of the sealing mechanism 2 are first placed into the groove 10 of the connecting flange 4 in sequence. The insertion tube 16 on the connecting pipe 5 is inserted into the through pipe 9 inside the connecting flange 4. The boss 17 is inserted into the groove 10 and presses against the first flat washer 11, the first spring washer 12, the sealing ring 13, the second spring washer 14, and the second flat washer 15. Then, the connecting flange 4 and the connecting pipe 5 are fixed with bolts. By setting the connecting flange 4 and the connecting pipe 5 at the inlet 3 and the outlet, and using the sealing mechanism 2 together, the airtightness when the gas enters from the inlet 3 and exits from the outlet is greatly improved, preventing leakage and improving accuracy.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-precision filter pressure reducing valve, comprising a pressure reducing valve body (1) and a sealing mechanism (2), characterized in that: The pressure reducing valve body (1) has an inlet (3) on one side and an outlet on the other side. Both the inlet (3) and the outlet are fixed with connecting flanges (4). The connecting flanges (4) are equipped with a sealing mechanism (2) inside. The connecting flanges (4) are fixedly connected to the connecting pipe (5) by bolts.

2. The high-precision filter pressure reducing valve according to claim 1, characterized in that: A pressure gauge (6) is provided on the front of the pressure reducing valve body (1), and an adjustment knob (7) is provided on the top of the pressure reducing valve body (1).

3. The high-precision filter pressure reducing valve according to claim 1, characterized in that: A mounting plate (8) is fixed above the body (1) of the pressure reducing valve, and the mounting plate (8) is provided with mounting holes.

4. The high-precision filter pressure reducing valve according to claim 1, characterized in that: The connecting flange (4) has a through pipe (9) in the middle that matches the inlet (3) and outlet, and the connecting flange (4) has a groove (10) that matches the sealing mechanism (2).

5. A high-precision filter pressure reducing valve according to claim 1, characterized in that: The sealing mechanism (2) includes a first flat washer (11), a first spring washer (12), a sealing ring (13), a second spring washer (14), and a second flat washer (15). The first flat washer (11), the first spring washer (12), the second spring washer (14), and the second flat washer (15) have the same diameter and are all made of stainless steel. The sealing ring (13) is made of rubber.

6. A high-precision filter pressure reducing valve according to claim 4, characterized in that: The connecting pipe (5) is provided with an insertion tube (16) that matches the through pipe (9), one end of the connecting pipe (5) is provided with a boss (17) that matches the groove (10), and one end of the connecting pipe (5) is provided with a fixing ring (18) that matches the connecting flange (4).

7. A high-precision filter pressure reducing valve according to claim 6, characterized in that: The connecting flange (4) and the fixing ring (18) are both provided with fixing holes (19) arranged in a ring array, and bolts are provided in the fixing holes (19).

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