Axial-flow type check valve support fixing structure

Abstract

The utility model discloses an axial-flow type check valve support fixing structure, and particularly relates to the field of check valves. The valve seat adopts the design of a'movable valve seat structure ', and is assembled in a valve seat hole of the valve body after being processed and ground in advance; the valve clack is of a double-guide structure, and guide rods at the two ends of the valve clack are assembled in guide holes of the valve body and the support in a distributed mode and used for preventing the valve clack from being meshed when the valve clack moves. The support is of a streamline structure and is assembled in a hole of the valve body. And the four open rings are respectively assembled in the open ring holes of the valve body when being assembled. According to the mechanism for fixing the support through the four open rings, the fixing structure of the support is optimized, the valve is easier and more reliable to assemble and maintain, convenient disassembly and assembly and stable fixation are achieved, and long-time reliable operation of the valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and more specifically, to an axial flow check valve bracket fixing structure. Background Art

[0002] Axial flow check valves are key valves to prevent backflow of media on pipelines. They have the advantages of low flow resistance, strong flow capacity, low pressure opening, and low pressure drop operation. Therefore, they are widely used in oil and gas long-distance pipelines, chemical plants, city gas, hydrogenation plants, tail gas recovery, LNG, high-lift water transfer pipelines, pumped storage, etc. In these applications, axial flow check valves play a vital role, ensuring the normal operation of the pipeline system and the effective control of the media.

[0003] However, the existing axial flow check valve still has some obvious defects in use, especially in the bracket fixing structure. The traditional bracket fixing method is easy to loosen under high pressure and high flow rate, causing the bracket to fall off, thus affecting the normal operation of the valve. In addition, the bracket fixing and disassembly process is complicated, which is not conducive to the maintenance and replacement of the valve. These defects limit the application and reliability of axial flow check valves under complex working conditions. There is an urgent need for an optimized bracket fixing structure to solve these problems and ensure the stable operation and easy maintenance of the valve under various working conditions. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an axial flow check valve bracket fixing structure, which uses a mechanism to fix the bracket through four open rings, greatly optimizing the fixing structure of the bracket, making the valve easier and more reliable during assembly and maintenance, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an axial flow check valve bracket fixing structure, including a valve body, a valve seat, a valve disc, a spring, a bracket, a four-open ring, a hexagon socket screw, and a spring washer;

[0006] The valve body is made of a single body structure;

[0007] The valve seat adopts a "live valve seat structure" design and is pre-processed and ground before being assembled in the valve seat hole of the valve body;

[0008] The valve flap adopts a "double guide structure" design, and the guide rods at both ends are distributed and assembled in the guide holes of the valve body and the bracket;

[0009] The bracket adopts a streamlined structure, and the bracket is assembled in the hole of the valve body;

[0010] The four open rings are respectively assembled in the open ring holes of the valve body;

[0011] The hexagon socket screw and the spring washer are sequentially assembled on the four-open ring.

[0012] In a preferred embodiment, the guide rods at both ends of the valve flap are distributed and assembled in the guide holes of the valve body and the bracket to prevent the valve flap from "biting" when moving.

[0013] In a preferred embodiment, the streamlined structure of the bracket is used to reduce eddy currents, cavitation and vibration generated during valve operation.

[0014] In a preferred embodiment, the four open rings are respectively assembled in the open ring holes of the valve body, and then the spring washers and the hexagon socket screws are assembled in sequence, the spring washers are used to prevent loosening, and the hexagon socket screws are used for locking.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model uses four open rings to fix the bracket, which greatly optimizes the fixing structure of the bracket, making the valve easier and more reliable to assemble and maintain, achieving convenient disassembly and stable fixation, and ensuring the long-term reliable operation of the valve;

[0017] 2. The utility model adopts a valve seat designed with a "live valve seat structure" to avoid the process of directly surfacing hard alloy on the valve body, making the assembly and maintenance of the valve seat more convenient, achieving efficient valve maintenance and replacement, and reducing downtime caused by valve seat problems;

[0018] 3. The valve disc of the utility model is designed with a double-guide structure. The guide rods at both ends are specially surface hardened and wear-resistant, which effectively prevents the valve disc from "biting" when moving, realizes the smooth movement and long-life operation of the valve disc, and improves the operating reliability and service life of the valve;

[0019] 4. The utility model effectively reduces the eddy current, cavitation and vibration generated during the operation of the valve through the streamlined design of the bracket, making the medium flow smoother, realizing the efficient operation and stability of the valve, and ensuring reliable operation under high pressure and high flow rate conditions;

[0020] 5. The utility model adopts reasonable structural design to make the cooperation of valve body, valve seat, valve disc, spring and bracket more tight and coordinated, further improving the overall performance of the valve and ensuring its stability and reliability under various complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of an axial flow check valve bracket fixing structure.

[0022] Figure 2 For this utility model Figure 1 A magnified view of the structure of part I.

[0023] Figure 3 It is a schematic diagram of the four-open-loop structure of the utility model.

[0024] The accompanying drawings are marked as follows: 1. valve body; 2. valve seat; 3. valve disc; 4. spring; 5. bracket; 6. four open rings; 7. hexagon socket screw; 8. spring washer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Refer to the instruction manual Figure 1-3 , an axial flow check valve bracket fixing structure according to an embodiment of the utility model comprises a valve body 1, a valve seat 2, a valve flap 3, a spring 4, a bracket 5, a four-open ring 6, a hexagon socket screw 7, and a spring washer 8;

[0027] The valve body 1 adopts a monomer structure, that is, it is made by an integral casting process; the valve seat 2 adopts a "live valve seat structure" design, which can be pre-processed and ground and then assembled in the valve seat hole of the valve body 1, avoiding the process of directly surfacing hard alloy on the valve body 1; the valve disc 3 adopts a "double guide structure" design, and the guide rods at both ends are distributed and assembled in the guide holes of the valve body 1 and the bracket 5, and the guide holes on both sides are specially surface hardened and wear-resistant; the bracket 5 adopts a streamlined structure, and the bracket 5 is assembled in the hole of the valve body 1; the four open rings 6 have a simple structure, and are respectively assembled in the open ring holes of the valve body 1 during assembly; the hexagon socket screws 7 and spring washers 8 are assembled on the four open rings 6 in sequence.

[0028] The guide rods at both ends of the valve disc 3 are distributed and assembled in the guide holes of the valve body 1 and the bracket 5. The guide holes on both sides have undergone special surface hardening and wear-resistant treatment to prevent the valve disc 3 from "biting" when moving; the streamlined structure of the bracket 5 is used to reduce eddy currents, cavitation and vibration generated during valve operation. The four open rings 6 are respectively assembled in the open ring holes of the valve body 1, and then the spring washers 8 and the hexagon socket screws 7 are assembled in turn. The spring washers 8 are used to prevent loosening, and the hexagon socket screws 7 are used for locking. At the same time, the locking structure is simple and reliable.

[0029] It should be noted that: the utility model is an axial flow check valve bracket fixing structure, through the precise design and mutual cooperation of multiple components, to achieve efficient medium flow control and reliable bracket fixing, the valve body 1 provides the main framework and support of the entire valve, adopts a single structure to ensure its rigidity and strength, the valve seat 2 adopts a "live valve seat structure" design, after pre-processing and grinding, it is assembled in the valve seat hole of the valve body 1, avoiding the method of direct surfacing of hard alloy, and improving the convenience of assembly and maintenance, the valve seat is in sealing contact with the valve disc 3 during operation to control the flow and blocking of the medium, the valve disc 3 adopts a "double guide structure" design, the guide rods at both ends are assembled in the guide holes of the valve body 1 and the bracket 5, and are subjected to special surface hardening and wear-resistant treatment to ensure that the valve disc is stable and unobstructed when moving, the valve disc is opened and closed under the action of the spring 4 to prevent the medium from flowing back,

[0030] The bracket 5 adopts a streamlined structure and is assembled in the hole of the valve body 1, which effectively reduces the eddy current, cavitation and vibration generated when the valve is running, ensuring the smooth flow of the medium. The four open rings 6 have a simple structure and are respectively assembled in the open ring holes of the valve body 1 during assembly. The reliability and stability of the bracket fixation are ensured by assembling the spring washer 8 and the hexagon socket screw 7 in sequence. The spring washer 8 is used to prevent loosening, and the hexagon socket screw 7 is used to lock, ensuring the stability of the entire fixed structure. Specifically, the valve seat 2, the valve disc 3, the spring 4, and the bracket 5 are assembled in the valve body 1 in sequence. The valve seat is closely matched with the valve body through its structure, and the valve disc slides in the guide hole through the double guide rods. The bracket reduces resistance through its streamlined design;

[0031] Finally, the four open rings 6 are respectively assembled in the open ring holes of the valve body 1, and the spring washers 8 and the hexagon socket screws 7 are assembled on the four open rings 6 in sequence. The spring washers are used to prevent loosening, and the hexagon socket screws are used to tightly lock the four open rings and the valve body. When disassembly is required, only the hexagon socket screws 7 need to be unscrewed to conveniently take out the four open rings 6, the spring washers 8 and other related parts for maintenance or replacement. This design not only improves the reliability and stability of the valve, but also greatly simplifies the assembly and maintenance process.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0033] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] 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 in the protection scope of the present utility model.

Claims

1. An axial flow check valve bracket fixing structure, comprising a valve body (1), characterized in that: It also includes a valve seat (2), a valve disc (3), a spring (4), a bracket (5), a four-open ring (6), a hexagon socket screw (7), and a spring washer (8); The valve body (1) is made of a single body structure; The valve seat (2) adopts a "live valve seat structure" design and is pre-processed and ground before being assembled in the valve seat hole of the valve body (1); The valve flap (3) adopts a "double guide structure" design, and the guide rods at both ends are installed in a distributed manner in the guide holes of the valve body (1) and the bracket (5); The bracket (5) adopts a streamlined structure, and the bracket (5) is assembled in the hole of the valve body (1); When assembling, the four open rings (6) are respectively assembled in the open ring holes of the valve body (1); The hexagon socket screw (7) and the spring washer (8) are sequentially assembled on the four-open ring (6).

2. The axial flow check valve bracket fixing structure according to claim 1 is characterized in that: The guide rods at both ends of the valve flap (3) are distributed and assembled in the guide holes of the valve body (1) and the bracket (5).

3. The axial flow check valve bracket fixing structure according to claim 2 is characterized in that: The support (5) is a streamlined structure.

4. The axial flow check valve bracket fixing structure according to claim 3 is characterized in that: The four open rings (6) are respectively assembled in the open ring holes of the valve body (1), and then the spring washers (8) and the hexagon socket screws (7) are assembled in sequence.

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