Gas pressure reducing device

Abstract

The utility model discloses a gas pressure reducing device which comprises a gas pressure reducing valve, a gas inlet pipe and a gas outlet pipe are fixedly connected to the gas pressure reducing valve, a filter box is fixedly connected to the left surface of the gas inlet pipe, a protective cover is movably connected to the filter box, and a connecting ring is fixedly connected to the lower surface of the protective cover. And the inner surface of the connecting ring is fixedly connected with an air filter screen. Through the arrangement of the filter box, the protective cover, the air filter screen and other structures, gas entering the gas pressure reducing valve can be filtered, so that impurities can be prevented from passing through the pressure reducing valve along with the gas, and the conditions of abrasion, corrosion and the like of parts in the gas pressure reducing valve due to friction and erosion of the impurities can be avoided; the pressure adjusting precision and the service life of the gas pressure reducing valve are ensured, impurities can be prevented from entering subsequent equipment or systems, and the stability of whole gas transmission is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pressure reducing valve field, especially gas pressure reducing device. BACKGROUND

[0002] Gas pressure reducing valve is a kind of device for controlling gas pressure, it can reduce the higher gas pressure from gas source to the lower pressure that meets the device or system operating requirement, and keep output pressure stable.

[0003] In prior art, gas pressure reducing valve on market usually does not have the function of filtering gas, which means that if gas contains particulate matter and other impurities, impurities will pass through pressure reducing valve with gas, and in the process of impurities passing through pressure reducing valve with gas, impurities are likely to contact with valve core, valve seat and other precision components inside pressure reducing valve, and long-term so, the friction and erosion of impurities can cause parts to wear, corrosion and other conditions, thereby affecting the pressure regulating accuracy and service life of pressure reducing valve, and also possibly entering subsequent equipment or system with gas, affecting the entire gas transmission and application system, thus a kind of gas pressure reducing device is needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of gas pressure reducing device, can realize the effect of filtering to the gas entering gas pressure reducing valve, so as to avoid impurities passing through pressure reducing valve with gas, not only can avoid the parts in gas pressure reducing valve to wear, corrosion and other conditions caused by the friction and erosion of impurities, ensure the pressure regulating accuracy and service life of gas pressure reducing valve, but also can prevent impurities from entering subsequent equipment or system, ensure the stability of entire gas transmission.

[0005] To achieve the above object, provide a kind of gas pressure reducing device, including gas pressure reducing valve, the gas pressure reducing valve is respectively fixedly connected with inlet pipe and outlet pipe, the left surface of the inlet pipe is fixedly connected with filter box, the filter box is movably connected with protective cover, the lower surface of the protective cover is fixedly connected with connecting ring, the inner surface of the connecting ring is fixedly connected with air filter screen, the lower surface of the connecting ring is fixedly connected with positioning block, the left surface of the filter box is fixedly connected with connecting pipe, the inner surface of the filter box is fixedly connected with first sealing ring, the inner surface of the protective cover is fixedly connected with second sealing ring.

[0006] The filter box is fixedly connected with two connecting blocks, the inner surfaces of the two connecting blocks are rotationally connected with connecting shafts, the connecting shafts are fixedly connected with rotating blocks, the upper surfaces of the rotating blocks are fixedly connected with bearing blocks, the inner surfaces of the bearing blocks are fixedly connected with guide rods, the outer surfaces of the guide rods are slidably connected with first sliding blocks, the outer surfaces of the guide rods are slidably connected with second sliding blocks, the outer surfaces of the guide rods are slidably sleeved with springs, the upper surfaces of the first sliding blocks and the second sliding blocks are fixedly connected with movable blocks, the side surfaces of the movable blocks are fixedly connected with fixed blocks, and the protective cover is fixedly connected with four limiting blocks.

[0007] According to the gas pressure reducing device, the outer surfaces of the air outlet pipe and the connecting pipe are fixedly connected with flanges, and the upper surface of the positioning block is fixedly connected with the air filter screen.

[0008] According to the gas pressure reducing device, the outer surface of the positioning block is movably connected with the filter box, and the lower surface of the second sealing ring is in contact with the first sealing ring.

[0009] According to the gas pressure reducing device, one end of the spring is fixedly connected with the left surface of the first sliding block, and the other end of the spring, away from the first sliding block, is fixedly connected with the right surface of the second sliding block.

[0010] According to the gas pressure reducing device, the limiting block is provided with a fixing groove, and the outer surface of the fixed block is movably connected with the fixing groove.

[0011] According to the gas pressure reducing device, the bearing block is provided with a sliding groove, and the outer surfaces of the first sliding block and the second sliding block are slidably connected with the sliding groove.

[0012] According to the gas pressure reducing device, the outer surface of the fixed block is slidably connected with the bearing block, and the outer surface of the movable block is slidably connected with the bearing block.

[0013] According to the gas pressure reducing device, the outer surface of the connecting ring is movably connected with the filter box.

[0014] The above-mentioned scheme has the beneficial effects that:

[0015] 1、Through the setting of filter box, protective cover and air filter screen and other structures, the gas entering the gas pressure reducing valve can be filtered, thereby avoiding impurities entering the gas pressure reducing valve together with the gas, not only avoiding the abrasion and corrosion of the components in the gas pressure reducing valve caused by the friction and erosion of impurities, ensuring the pressure regulating accuracy and service life of the gas pressure reducing valve, but also preventing impurities from entering the subsequent equipment or system, ensuring the stability of the entire gas transmission.

[0016] 2、Through the setting of the first sealing ring and the second sealing ring, the sealing performance of the filter box and the protective cover after connection can be ensured, and the gas can flow along the designed path, so that the gas can be stably conveyed.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in combination with the drawings and examples;

[0019] Figure 1 It is a whole structure schematic view of the gas pressure reducing device of the present application;

[0020] Figure 2 It is a structure schematic view of the filter box section of the gas pressure reducing device of the present application;

[0021] Figure 3 It is a structure schematic view of the filter box section of the gas pressure reducing device of the present application;

[0022] Figure 4 It is a structure schematic view of the protective cover section of the gas pressure reducing device of the present application;

[0023] Figure 5 It is a structure schematic view of the bearing block section of the gas pressure reducing device of the present application.

[0024] LEGEND:

[0025] 1, gas pressure reducing valve; 2, gas inlet pipe; 3, gas outlet pipe; 4, filter box; 5, protective cover; 6, connecting ring; 7, air filter screen; 8, positioning block; 9, connecting pipe; 10, first sealing ring; 11, second sealing ring; 12, flange plate; 13, connecting block; 14, connecting shaft; 15, rotating block; 16, bearing block; 17, guide rod; 18, first sliding block; 19, second sliding block; 20, spring; 21, movable block; 22, fixed block; 23, limiting block; 24, fixed groove; 25, sliding groove. DETAILED DESCRIPTION

[0026] The detailed embodiments of the present application will be described in this section. The preferred embodiments of the present application are shown in the drawings, and the drawings serve to supplement the description in the textual part of the specification so that each technical feature and the overall technical scheme of the present application can be understood intuitively and visually by the person skilled in the art. However, it cannot be understood as a limitation on the protection scope of the present application.

[0027] With reference to Figures 1-5 The gas pressure reducing device according to the present application comprises a gas pressure reducing valve 1, an air inlet pipe 2 and an air outlet pipe 3 are fixedly connected to the gas pressure reducing valve 1, a filter box 4 is fixedly connected to the left surface of the air inlet pipe 2, a protective cover 5 is movably connected to the filter box 4, a connecting ring 6 is fixedly connected to the lower surface of the protective cover 5, the outer surface of the connecting ring 6 is movably connected to the filter box 4, an air filter screen 7 is fixedly connected to the inner surface of the connecting ring 6, a positioning block 8 is fixedly connected to the lower surface of the connecting ring 6, a connecting pipe 9 is fixedly connected to the left surface of the filter box 4, a first sealing ring 10 is fixedly connected to the inner surface of the filter box 4, a second sealing ring 11 is fixedly connected to the inner surface of the protective cover 5, flanges 12 are fixedly connected to the outer surfaces of the air outlet pipe 3 and the connecting pipe 9, the device as a whole can be connected to the air pump and other equipment on the air inlet end through the flanges 12 on the connecting pipe 9, so that the normal conveying of the gas is ensured, the subsequent equipment can be connected through the flanges 12 on the air outlet pipe 3, so that the normal conveying to the subsequent processing equipment is ensured, the upper surface of the positioning block 8 is fixedly connected to the air filter screen 7, the outer surface of the positioning block 8 is movably connected to the filter box 4, and the lower surface of the second sealing ring 11 is in contact with the first sealing ring 10.

[0028] The filter box 4 is fixedly connected with two connecting blocks 13, the inner surfaces of the two connecting blocks 13 are rotationally connected with connecting shafts 14, the connecting shafts 14 are fixedly connected with rotating blocks 15, the upper surfaces of the rotating blocks 15 are fixedly connected with bearing blocks 16, the inner surfaces of the bearing blocks 16 are fixedly connected with guide rods 17, the outer surfaces of the guide rods 17 are slidably connected with first sliding blocks 18, the outer surfaces of the guide rods 17 are slidably connected with second sliding blocks 19, the outer surfaces of the guide rods 17 are slidably sleeved with springs 20, one end of the spring 20 is fixedly connected with the left surface of the first sliding block 18, the end of the spring 20 away from the first sliding block 18 is fixedly connected with the right surface of the second sliding block 19, the upper surfaces of the two first sliding blocks 18 and the two second sliding blocks 19 are fixedly connected with movable blocks 21, the side surfaces of the four movable blocks 21 are fixedly connected with fixed blocks 22, the protective cover 5 is fixedly connected with four limiting blocks 23, the outer surfaces of the four fixed blocks 22 are movably connected with the four limiting blocks 23, the limiting blocks 23 are provided with fixed grooves 24, the outer surfaces of the fixed blocks 22 are movably connected with the fixed grooves 24, the bearing blocks 16 are provided with sliding grooves 25, the outer surfaces of the first sliding blocks 18 and the second sliding blocks 19 are slidably connected with the sliding grooves 25, the outer surfaces of the fixed blocks 22 are slidably connected with the bearing blocks 16, the outer surfaces of the movable blocks 21 are slidably connected with the bearing blocks 16, through the setting of the sliding grooves 25, it ensures that the first sliding blocks 18, the second sliding blocks 19, the movable blocks 21 and the fixed blocks 22 and other structures can smoothly move, and under the action of the guide rods 17, it can guide the movement of the first sliding blocks 18, the second sliding blocks 19, the movable blocks 21, the fixed blocks 22 and other structures, and ensure the stability of the movement.

[0029] Working principle: when the gas enters into the filter box 4 through the connecting pipe 9, it will first contact with the air filter screen 7 on the connecting ring 6 and the positioning block 8, so that the subsequent gas entering into the gas pressure reducing valve 1 can be filtered under the action of the air filter screen 7, and the impurities in the gas are filtered out before entering into the gas pressure reducing valve 1 through the gas inlet pipe 2, thereby preventing the impurities from entering into the gas pressure reducing valve 1 together with the gas, by pressing the two movable blocks 21 on the same side, the two movable blocks 21 are moved close to each other, the two movable blocks 21 can drive the first sliding block 18 and the second sliding block 19 to move close to each other, and the first sliding block 18 and the second sliding block 19 will gradually press the spring 20 during the movement on the guide rod 17, so that the spring 20 is in a taut state, when the movable fixed block 22 is separated from the fixed groove 24, the fixation of the rotating block 15, the bearing block 16 and other structures on the bearing block 16 is released, at this time, the fixed block 22 is pulled down, since the fixed block 22 is in a pressed state, the downward pulling of the fixed block 22 can make the fixed block 22 drive the bearing block 16, the rotating block 15 and the structures on the bearing block 16 to overturn downward around the connecting shaft 14 in the connecting block 13 as the center shaft, when the overturned fixed block 22 no longer corresponds to the fixed groove 24, the pressed movable block 21 is released, and the spring 20 is no longer pressed to rebound, the rebounding spring 20 can drive the first sliding block 18 and the second sliding block 19 to move away from each other, the first sliding block 18 and the second sliding block 19 can drive the two movable blocks 21 and the structures on the movable blocks 21 to move to reset, then the other side is operated again, the fixation between the filter box 4 and the protective cover 5 is released, then the protective cover 5 is pulled up, the protective cover 5 and the structures on the protective cover 5 are taken off from the filter box 4, the air filter screen 7 is taken out, and the air filter screen 7 is cleaned to ensure its normal filtering effect and gas flow performance, when the air filter screen 7 is cleaned, the positioning block 8 and the connecting ring 6 are placed in the filter box 4, when the protective cover 5 is placed, the second sealing ring 11 on the protective cover 5 contacts with the first sealing ring 10 on the filter box 4, then the two movable blocks 21 on the same side are pressed, the two movable blocks 21 drive the two fixed blocks 22, the first sliding block 18 and the second sliding block 19 to move close to each other, and the spring 20 is in a taut state, when the movable fixed block 22 does not affect the overturning of the rotating block 15 and other structures, the movable block 21 is pulled up, since the fixed block 22 is in a pressed state, the upward pulling of the fixed block 22 can make the fixed block 22 drive the bearing block 16, the rotating block 15 and the structures on the bearing block 16 to overturn upward around the connecting shaft 14 in the connecting block 13 as the center shaft, when the overturned fixed block 22 corresponds to the fixed groove 24 on the limiting block 23,Another hand holds the rotating block 15, prevents the rotating block 15 from moving, at this time, the movable block 21 is loosened, the spring 20 is not limited to rebound, the rebounding spring 20 drives the first slider 18, the second slider 19, two movable blocks 21 and two fixed blocks 22 to move to reset, when the moving fixed block 22 is inserted into the fixed groove 24, the other side is operated again, and the operation of the protective cover 5 and the structure on the protective cover 5 is completed, the air filter screen 7 is placed, and under the action of the second sealing ring 11 and the first sealing ring 10, the sealing property of the filter box 4 connected with the protective cover 5 is improved, the designed path of the gas is ensured, and the gas can be stably conveyed.

[0030] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A gas pressure reducing device, comprising: A gas pressure reducing valve (1) is characterized in that an inlet pipe (2) and an outlet pipe (3) are fixedly connected to the gas pressure reducing valve (1), a filter box (4) is fixedly connected to the left surface of the inlet pipe (2), a protective cover (5) is movably connected to the filter box (4), a connecting ring (6) is fixedly connected to the lower surface of the protective cover (5), an air filter screen (7) is fixedly connected to the inner surface of the connecting ring (6), a positioning block (8) is fixedly connected to the lower surface of the connecting ring (6), a connecting pipe (9) is fixedly connected to the left surface of the filter box (4), a first sealing ring (10) is fixedly connected to the inner surface of the filter box (4), and a second sealing ring (11) is fixedly connected to the inner surface of the protective cover (5). Two connecting blocks (13) are fixedly connected to the filter box (4). Connecting shafts (14) are rotatably connected to the inner surfaces of both connecting blocks (13). Rotating blocks (15) are fixedly connected to both connecting shafts (14). Bearing blocks (16) are fixedly connected to the upper surfaces of both rotating blocks (15). Guide rods (17) are fixedly connected to the inner surfaces of both bearing blocks (16). First sliders (18) are slidably connected to the outer surfaces of both guide rods (17). The outer surface of each of the two guide rods (17) is slidably connected to a second slider (19), and the outer surface of each of the two guide rods (17) is slidably sleeved with a spring (20). The upper surfaces of the two first sliders (18) and the two second sliders (19) are fixedly connected to movable blocks (21), and the side surfaces of the four movable blocks (21) are fixedly connected to fixed blocks (22). The protective cover (5) is fixedly connected to four limiting blocks (23), and the outer surfaces of the four fixed blocks (22) are movably connected to the four limiting blocks (23).

2. The gas pressure reducing device according to claim 1, characterized in that, The outer surfaces of the air outlet pipe (3) and the connecting pipe (9) are fixedly connected with flanges (12), and the upper surface of the positioning block (8) is fixedly connected with the air filter (7).

3. A gas pressure reducing device according to claim 1, characterized in that, The outer surface of the positioning block (8) is movably connected to the filter box (4), and the lower surface of the second sealing ring (11) is in contact with the first sealing ring (10).

4. A gas pressure reducing device according to claim 1, characterized in that, One end of the spring (20) is fixedly connected to the left surface of the first slider (18), and the other end of the spring (20) away from the first slider (18) is fixedly connected to the right surface of the second slider (19).

5. A gas pressure reducing device according to claim 1, characterized in that, The limiting block (23) has a fixing groove (24), and the outer surface of the fixing block (22) is movably connected to the fixing groove (24).

6. A gas pressure reducing device according to claim 1, characterized in that, The support block (16) is provided with a sliding groove (25), and the outer surfaces of the first slider (18) and the second slider (19) are slidably connected to the sliding groove (25).

7. A gas pressure reducing device according to claim 1, characterized in that, The outer surface of the fixed block (22) is slidably connected to the bearing block (16), and the outer surface of the movable block (21) is slidably connected to the bearing block (16).

8. A gas pressure reducing device according to claim 1, characterized in that, The outer surface of the connecting ring (6) is movably connected to the filter box (4).

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