Nitrogen decompression conveying device

Abstract

The utility model relates to the technical field of nitrogen conveying, and discloses a nitrogen pressure reduction conveying device which comprises a pressure reduction assembly and sealing assemblies installed at the two ends of the pressure reduction assembly, a buffering assembly is installed on the left side of the pressure reduction assembly, an installation assembly is installed below the pressure reduction assembly, and a communication assembly is installed at the upper end of the pressure reduction assembly. Nitrogen enters the main ventilation pipe and then passes through the second buffer pipe and the first buffer pipe, the nitrogen which is just introduced can be effectively buffered through the blocking piece in the process, the air hammer effect and abrasion of internal parts are avoided, and in the nitrogen introduction process, when the air pressure on the right side of the main ventilation pipe is higher than the air pressure limited by the rated pressure limiter, under the action of the air pressure, the nitrogen is introduced into the main ventilation pipe. The chock plug pushes the transmission rod to move leftwards, drives the transmission arm to move at the same time, and acts on the rotary valve plate to enable the rotary valve plate to deviate, so that cavities in the two sides of the pressure reducing valve communicate through the communicating pipe, and the conveying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen delivery technology, and more specifically to a nitrogen pressure reducing and delivery device. Background Technology

[0002] With the continuous advancement of industrial technology and the expansion of production scale, the demand for industrial gases such as nitrogen is increasing. As an important industrial raw material and protective gas, nitrogen is widely used in many fields such as chemical, electronics, and food. Nitrogen pressure reducing and conveying devices can stably reduce high-pressure nitrogen to the required low-pressure level to meet the gas pressure requirements of various production processes and equipment.

[0003] Existing nitrogen pressure reducing and conveying devices, when the gas pressure on both sides is close to balanced, use internal pressure reducing valve components. The original design of these components was to ensure that the gas could flow stably from the high-pressure area to the low-pressure area. However, this mechanism unexpectedly leads to a reduction in the overall conveying efficiency.

[0004] Furthermore, when the device is first started or encounters rapidly changing air pressure conditions during operation, such sudden pressure fluctuations can easily trigger the so-called "air hammer effect." This phenomenon can cause significant damage to the precision parts inside the device, further affecting production efficiency and safety.

[0005] Therefore, in order to solve the above problems, this application provides a nitrogen pressure reducing and conveying device. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a nitrogen pressure reducing and conveying device to solve the problems existing in the background art.

[0007] This utility model provides the following technical solution: a nitrogen pressure reducing and conveying device, including a pressure reducing component and sealing components installed at both ends of the pressure reducing component, a buffer component installed on the left side of the pressure reducing component, an installation component installed below the pressure reducing component, and a connecting component installed at the upper end of the pressure reducing component;

[0008] Preferably, the pressure reducing assembly includes a main vent pipe, a pressure reducing valve, and a valve body sealing ring, wherein the pressure reducing valve is fixedly installed in the inner tube of the main vent pipe, and the valve body sealing ring is disposed on both sides of the pressure reducing valve and fixedly installed in the inner tube of the main vent pipe.

[0009] Preferably, the sealing assembly includes a mounting ring, a mounting sealing ring, and fixing screws. The mounting ring is fixedly sleeved on both ends of the vent pipe, and the mounting sealing rings are fixedly snapped onto both ends of the vent pipe. The mounting ring has fixing screws evenly distributed around its edge, and the fixing screws are threaded onto the mounting ring. The device is then fixed by rotating the fixing screws, and the mounting sealing rings seal the connection points.

[0010] Preferably, the buffer assembly includes a first buffer tube, a second buffer tube, a groove, and a baffle. The first and second buffer tubes are disposed in the middle section of the main ventilation pipe and fixedly installed on the inner wall of the main ventilation pipe. The second buffer tube has a groove, and the first buffer tube is slidably connected to the second buffer tube through the groove. The baffle is fixedly installed on the inner wall of the first and second buffer tubes. After nitrogen enters the main ventilation pipe, it passes through the second and first buffer tubes. During the process, the baffle can effectively buffer the nitrogen that has just been introduced.

[0011] Preferably, the connecting assembly includes a pressure testing tube, a connecting tube, a rotary valve plate, a transmission arm, a limiting groove, a transmission rod, a plug, a limiting ring, and a rated pressure limiter. The pressure testing tube and the connecting tube are fixedly installed at the top of the main ventilation pipe and communicate with its inner cavity. The rotary valve plate is disposed within the connecting tube, and its top passes through the connecting tube and is fixedly connected to the transmission arm. The rated pressure limiter is installed on the left side of the inner tube of the main ventilation pipe. Limiting rings are provided on both sides of the inner wall of the pressure testing tube, and a limiting groove is formed at the top of the pressure testing tube. The plug fits into the inside of the pressure testing tube. The wall is fixedly installed at both ends of the transmission rod. The upper end of the transmission rod is slidably connected to the transmission arm through the limiting groove. The transmission rod and the plug are integrally set between the limiting ring. When the rotary valve plate is perpendicular to the connecting pipe, the plug set on the right side of the transmission rod is attached to the left side of the limiting ring. When the air pressure on the right side of the air main pipe is higher than the air pressure limited by the rated pressure limiter, under the action of air pressure, the plug pushes the transmission rod to move to the left, and at the same time drives the transmission arm to move, and acts on the rotary valve plate to make it deflect, so that the cavities on both sides of the pressure reducing valve are connected through the connecting pipe.

[0012] Preferably, the mounting assembly includes a fixing claw, a mounting plate, and mounting screws. The fixing claw is located in the middle section of the main ventilation pipe and is fixedly mounted on the lower side of the main ventilation pipe. The fixing claw is fixedly mounted on the mounting plate. Mounting screws are provided at the four corners of the mounting plate. The mounting screws are threaded onto the mounting plate. At this time, rotating the mounting screws further fixes the device through the fixing claw and the mounting plate.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] When using the device, nitrogen enters the main ventilation pipe and passes through the second and first buffer pipes. During this process, the baffles effectively buffer the incoming nitrogen, preventing air hammer and wear on internal parts. When the pressure on the right side of the main ventilation pipe is higher than the pressure limited by the rated pressure limiter, the plug pushes the transmission rod to the left under the pressure, which in turn moves the transmission arm and acts on the rotating valve plate, causing it to deflect. This connects the cavities on both sides of the pressure reducing valve through the connecting pipe, improving the delivery efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the buffer component structure of this utility model.

[0018] Figure 4 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0019] The attached figures are labeled as follows: 1. Pressure reducing assembly; 101. Main vent pipe; 102. Pressure reducing valve; 103. Valve body sealing ring; 2. Sealing assembly; 201. Mounting ring; 202. Mounting sealing ring; 203. Fixing screw; 3. Buffer assembly; 301. First buffer tube; 302. Second buffer tube; 303. Slide groove; 304. Baffle; 4. Connecting assembly; 401. Pressure measuring tube; 402. Connecting tube; 403. Rotary valve plate; 404. Transmission arm; 405. Limiting groove; 406. Transmission rod; 407. Plug; 408. Limiting ring; 409. Rated pressure limiter; 5. Mounting assembly; 501. Fixing claw; 502. Mounting plate; 503. Mounting screw. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The nitrogen pressure reducing and conveying device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Reference Figure 1 and Figure 2 This utility model provides a nitrogen pressure reducing and conveying device, including a pressure reducing component 1 and a sealing component 2 installed at both ends of the pressure reducing component 1. A buffer component 3 is installed on the left side of the pressure reducing component 1, an installation component 5 is installed below the pressure reducing component 1, and a connecting component 4 is installed at the upper end of the pressure reducing component 1.

[0022] Reference Figure 1 and Figure 2 The pressure reducing assembly 1 includes a main vent pipe 101, a pressure reducing valve 102 and a valve body sealing ring 103, wherein the pressure reducing valve 102 is fixedly installed in the inner tube of the main vent pipe 101, and the valve body sealing ring 103 is disposed on both sides of the pressure reducing valve 102 and fixedly installed in the inner tube of the main vent pipe 101.

[0023] Reference Figure 1 and Figure 2 The sealing assembly 2 includes a mounting ring 201, a mounting sealing ring 202, and fixing screws 203. The mounting ring 201 is fixedly sleeved on both ends of the vent pipe 101. The mounting sealing rings 202 are fixedly snapped onto both ends of the vent pipe 101. The mounting ring 201 is provided with fixing screws 203 evenly distributed around its edge. The fixing screws 203 are threaded onto the mounting ring 201. At this time, the device is fixed by rotating the fixing screws 203. The mounting sealing rings 202 seal the connection.

[0024] Reference Figure 2 and Figure 3 The buffer assembly 3 includes a first buffer tube 301, a second buffer tube 302, a sliding groove 303, and a baffle 304. The first buffer tube 301 and the second buffer tube 302 are located in the middle section of the main ventilation pipe 101 and are fixedly installed on the inner wall of the main ventilation pipe 101. The second buffer tube 302 has a sliding groove 303. The first buffer tube 301 is slidably connected to the second buffer tube 302 through the sliding groove 303. The baffle 304 is fixedly installed on the inner wall of the first buffer tube 301 and the second buffer tube 302. After nitrogen enters the main ventilation pipe 101, it passes through the second buffer tube 302 and the first buffer tube 301. During the process, the baffle 304 can effectively buffer the nitrogen that has just been introduced.

[0025] Reference Figure 2 and Figure 4 The connecting component 4 includes a pressure testing tube 401, a connecting tube 402, a rotary valve plate 403, a transmission arm 404, a limiting groove 405, a transmission rod 406, a plug 407, a limiting ring 408, and a rated pressure limiter 409. The pressure testing tube 401 and the connecting tube 402 are fixedly installed at the top of the main ventilation pipe 101 and communicate with its inner cavity. The rotary valve plate 403 is located inside the connecting tube 402, with its top penetrating the connecting tube 402 and fixedly connected to the transmission arm 404. The rated pressure limiter 409 is installed on the left inner tube of the main ventilation pipe 101. Limiting rings 408 are provided on both sides of the inner wall of the pressure testing tube 401, and a limiting groove 405 is formed at the top of the pressure testing tube 401. The plug 407 is fitted onto the pressure testing tube 401. 1. The inner wall is fixedly installed at both ends of the transmission rod 406. The upper end of the transmission rod 406 is slidably connected to the transmission arm 404 through the limiting groove 405. The transmission rod 406 and the plug 407 are set together between the limiting ring 408. When the rotating valve plate 403 is perpendicular to the connecting pipe 402, the plug 407 set on the right side of the transmission rod 406 is attached to the left side of the limiting ring 408. When the air pressure on the right side of the air pipe 101 is higher than the air pressure limited by the rated pressure limiter 409, under the action of air pressure, the plug 407 pushes the transmission rod 406 to move to the left, and at the same time drives the transmission arm 404 to move, and acts on the rotating valve plate 403 to cause it to deflect, so that the cavities on both sides of the pressure reducing valve 102 are connected through the connecting pipe 402.

[0026] Reference Figure 1 and Figure 2 The mounting assembly 5 includes a fixing claw 501, a mounting plate 502, and mounting screws 503. The fixing claw 501 is located in the middle section of the ventilation main pipe 101 and is fixedly installed on the lower side of the ventilation main pipe 101. The fixing claw 501 is fixedly installed on the mounting plate 502. The mounting plate 502 has mounting screws 503 at its four corners. The mounting screws 503 are threaded onto the mounting plate 502. At this time, rotating the mounting screws 503 further fixes the device through the fixing claw 501 and the mounting plate 502.

[0027] The working principle of this utility model is as follows: When using the device, the nitrogen pipe is installed on the left side of the main ventilation pipe 101, and then the device is fixed by rotating the fixing screw 203. The sealing ring 202 is installed to seal the connection. At the same time, rotating the mounting screw 503 further fixes the device by the fixing claw 501 and the mounting plate 502. After the nitrogen enters the main ventilation pipe 101, it passes through the second buffer pipe 302 and the first buffer pipe 301. During the process, the baffle 304 can effectively buffer the nitrogen that has just been introduced. Then, the nitrogen is depressurized by the pressure reducing valve 102 and then flows out through the right side of the main ventilation pipe 101. During the process of introducing nitrogen, when the air pressure on the right side of the main ventilation pipe 101 is higher than the air pressure limited by the rated pressure limiter 409, under the action of air pressure, the plug 407 pushes the transmission rod 406 to move to the left, and at the same time drives the transmission arm 404 to move, which acts on the rotating valve plate 403 to cause it to deflect, so that the cavities on both sides of the pressure reducing valve 102 are connected through the connecting pipe 402.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.

Claims

1. A nitrogen decompression delivery device comprising a decompression assembly (1) and a sealing assembly (2) mounted at both ends of the decompression assembly (1), characterized in that: The left side of the pressure reducing assembly (1) is provided with a buffer assembly (3), the lower side of the pressure reducing assembly (1) is provided with a mounting assembly (5), the upper end of the pressure reducing assembly (1) is provided with a communication assembly (4), the pressure reducing assembly (1) comprises a ventilation main pipe (101), the communication assembly (4) comprises a pressure measuring pipe (401), a communication pipe (402), a rotary valve piece (403), a transmission arm (404), a limiting groove (405), a transmission rod (406), a plug (407), a limiting ring (408) and a rated pressure limiter (409), wherein the pressure measuring pipe (401) and the communication pipe (402) are fixedly installed at the top end of the ventilation main pipe (101) and are communicated with the inner cavity thereof, the rotary valve piece (403) is arranged in the inner pipe of the communication pipe (402), the rotary valve piece (403) is fixedly connected with the transmission arm (404) through the communication pipe (402) at the top thereof, the rated pressure limiter (409) is installed in the left side inner pipe of the ventilation main pipe (101), the limiting ring (408) is arranged on the inner wall of the pressure measuring pipe (401) on both sides, the limiting groove (405) is formed at the top of the pressure measuring pipe (401), the plug (407) is attached to the inner wall of the pressure measuring pipe (401) and is fixedly installed at both ends of the transmission rod (406), the transmission rod (406) is slidably connected with the transmission arm (404) through the limiting groove (405) at the upper end thereof, the transmission rod (406) and the plug (407) are arranged between the limiting rings (408), when the rotary valve piece (403) is perpendicular to the communication pipe (402), the plug (407) arranged on the right side of the transmission rod (406) is attached to the left side of the limiting ring (408).

2. The nitrogen decompression delivery apparatus of claim 1, wherein: The pressure reducing assembly (1) further comprises a pressure reducing valve (102) and a valve body sealing ring (103), wherein the pressure reducing valve (102) is fixedly installed in the inner pipe of the ventilation main pipe (101), and the valve body sealing ring (103) is arranged on both sides of the pressure reducing valve (102) and is fixedly installed in the inner pipe of the ventilation main pipe (101).

3. The nitrogen decompression delivery apparatus of claim 2, wherein: The sealing assembly (2) comprises a mounting ring (201), a mounting sealing ring (202) and a fixed screw (203), wherein the mounting ring (201) is fixedly sleeved at both ends of the ventilation main pipe (101), the mounting sealing ring (202) is fixedly clamped at both ends of the ventilation main pipe (101), the fixed screw (203) is circumferentially and uniformly distributed on the edge of the mounting ring (201), and the fixed screw (203) is threadedly sleeved with the mounting ring (201).

4. The nitrogen decompression delivery apparatus of claim 2, wherein: The buffer assembly (3) comprises a first buffer pipe (301), a second buffer pipe (302), a sliding groove (303) and a baffle (304), wherein the first buffer pipe (301) and the second buffer pipe (302) are arranged in the middle section of the ventilation main pipe (101) and are fixedly installed on the inner wall of the ventilation main pipe (101), the sliding groove (303) is formed in the second buffer pipe (302), the first buffer pipe (301) is slidably connected with the second buffer pipe (302) through the sliding groove (303), and the baffle (304) is fixedly installed on the inner walls of the first buffer pipe (301) and the second buffer pipe (302).

5. The nitrogen decompression delivery apparatus of claim 2, wherein: The mounting assembly (5) comprises a fixed clamping jaw (501), a mounting plate (502) and mounting screws (503), wherein the fixed clamping jaw (501) is arranged at the middle section of the ventilation main pipe (101) and fixedly mounted at the lower side of the ventilation main pipe (101), the fixed clamping jaw (501) is fixedly mounted on the mounting plate (502), the mounting plate (502) is provided with mounting screws (503) at four corners, and the mounting screws (503) are threadedly sleeved with the mounting plate (502).

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