Shaftless distributed floating linear guide structure and assembling method thereof

Abstract

The application belongs to the technical field of axial flow check valve, aims to solve the problem of sealing leakage caused by guide jamming of axial flow check valve, and discloses a shaftless distributed floating linear guide structure, which comprises a spring, a spring seat, a spring leaf and a backing plate, the spring is sleeved below the spring seat, the spring leaf is connected with the spring seat through the backing plate, one end of the spring leaf is installed above the spring seat, the backing plate is installed above the spring leaf, and the backing plate, the spring leaf and the spring seat are connected together through bolts. The application can reduce sealing leakage caused by jamming, can realize shaftless guide of the valve disc, is not easy to be jammed by impurities in the medium in the use process, can complete stepless centering movement of the valve disc by relying on spring force and medium thrust, has self-alignment fine adjustment function, can ensure reliable opening and closing of the valve disc, and can ensure sealing performance.

Description

Technical Field

[0001] This application belongs to the field of axial flow check valve technology, and particularly relates to a shaftless distributed floating linear guide structure and its assembly method. Background Technology

[0002] An axial flow check valve is a type of valve used in water conservancy and hydropower projects, municipal water supply pipelines, and other applications to prevent backflow of media. An axial flow check valve consists of a valve body, a guide fluid, a guide system, a valve disc, and bolts. The guide system is the most critical component ensuring the movement and sealing of the valve disc.

[0003] With the widespread application of axial flow check valves, the problem of guide jamming is frequently encountered. Since the guide structure often adopts a single or multiple shaft with sliding bearings, the dimensional requirements are extremely high. During use, mud and sand can easily enter the bearings and cause jamming, leading to frequent sealing leaks. It can be seen that conventional axial flow check valves have the problem of guide jamming causing sealing leaks. Summary of the Invention

[0004] The purpose of this application is to provide a shaftless distributed floating linear guide structure and its assembly method to solve the problem of sealing leakage caused by guide jamming in axial flow check valves.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, this application provides a shaftless distributed floating linear guide structure, including a spring, a spring seat, a spring plate, and a pad. The spring is sleeved below the spring seat and connected to the spring plate through the pad. One end of the spring plate is installed above the spring seat. The pad is installed above the spring plate and the pad, the spring plate, and the spring seat are connected together by bolts.

[0007] In some embodiments, the pad, the spring, and the spring seat are connected by bolts.

[0008] In some embodiments, the guide structure is connected via the pad, the bolt, and the fluid guide.

[0009] In some embodiments, the guide structure and the fluid guide are installed in the valve body.

[0010] In some embodiments, during installation, one end of the spring is mounted on the spring seat, and the other end is disposed in the spring seat hole of the fluid guide.

[0011] In some embodiments, during installation, the spring has a set amount of compression, which pushes the guide mechanism to move in a straight line without any obstruction.

[0012] In some embodiments, the spring seat is made of stainless steel with a spherical structure.

[0013] In some embodiments, the reed is made of stainless steel.

[0014] In some embodiments, the spring is made of stainless steel.

[0015] In some embodiments, the pad is made of stainless steel.

[0016] Secondly, this application provides an assembly method for a shaftless distributed floating linear guide structure, comprising the following steps:

[0017] Step 1: Raise the large end of the guide tube upwards;

[0018] Step 2: Mark a 20° position line on the outer wall of the guide fluid, and install the pad, the spring, the spring seat and the spring in sequence. After trial installation and inspection of the valve disc, place it separately into the valve body.

[0019] Step 3: Place the valve body as required, install the end cap, and mark it at a 45° position on its outer wall;

[0020] Step 4: Hoist the fluid guide, align it with the 45° and 20° markings, lower it into place, ensure the springs are evenly distributed, install and tighten the end bolts, and adjust the bolt notches to align with the threaded holes using the screws.

[0021] Compared with the prior art, the shaftless distributed floating linear guide structure and its assembly method provided in this application have the following advantages:

[0022] This application can reduce sealing leakage caused by jamming, realize shaftless guidance of valve disc, and is not easily jammed by impurities in the medium during use. Relying on spring force and medium thrust, the valve disc completes stepless centering movement and has a self-aligning fine adjustment function to ensure reliable opening and closing of valve disc and ensure sealing performance.

[0023] During assembly, this application ensures uniform circumferential force by matching the valve body angle, completely eliminating wear and jamming of the guide mechanism. The valve disc is only subjected to fluid dynamics and spring force, resulting in extremely fast response and reliable sealing.

[0024] This application presents a simple and novel structure with wide applicability and convenient installation. During installation, simply connect the spring to the spring seat and then tighten it onto the fluid guide with bolts; installation is convenient, safe, and reliable. Furthermore, this structure is suitable for valves and containers with similar axially moving sealing structures, demonstrating broad versatility. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the technical description will be briefly introduced below.

[0026] Figure 1 A schematic diagram of the shaftless distributed floating linear guide structure provided in this application; Figure 2 A schematic diagram of the shaftless distributed floating linear guide structure assembled on the guide fluid provided in this application; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 A schematic diagram showing the angles of the guide system and valve body during assembly, as provided in this application; Figure 5 A schematic diagram of the fluid guide provided in this application; Figure 6 A schematic diagram of the mounting spring seat pad, spring leaf, spring seat, and spring components provided in this application; Figure 7 This is a schematic diagram of the valve body provided in this application; Figure 8 This is a schematic diagram of the main body assembly provided in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Spring; 2. Spring seat; 3. Spring leaf; 4. Washer plate; 5. Bolt; 6. Fluid guide; 7. Valve body. Detailed Implementation

[0032] The following detailed description provides further details on specific implementation methods.

[0033] like Figures 1 to 4 As shown, this application provides a shaftless distributed floating linear guide structure, including a spring 1, a spring seat 2, a spring plate 3, a pad 4, and a bolt 5. The spring 1 is fitted under the spring seat 2 and connected to the spring plate 3 via the pad 4 and the bolt 5. One end of the spring plate 3 is mounted on top of the spring seat 2, and the pad 4 is mounted on top of the spring plate 3. The pad 4, the spring plate 3, and the spring seat 2 are connected together by the bolt. The other end of the spring plate 3 is mounted on a guide fluid 6.

[0034] The shaftless distributed floating linear guide structure provided in this application is used for guiding axial flow check valves. Through screw connection and positioning direction, the guide mechanism moves linearly along the axis within the valve body 7. Due to the shaftless positioning and the absence of wear parts, the spring force directly and without loss drives the valve disc. The movement trajectory is strictly axial, without sway or jamming, making it very suitable for the guide system of axial flow check valves.

[0035] The shaftless distributed floating linear guide structure adopts a shaftless distributed floating design that is not easy to jam, and the position needs to be marked during assembly.

[0036] like Figure 2 As shown, the shaftless distributed floating linear guide structure is evenly distributed on the guide body and connected to the guide body 6 through the pad 4 and bolt 5. One end of the spring 1 is sleeved on the spring seat 2, and the other end falls into the spring seat hole of the guide body 6. The spring 1 has a set compression amount, which pushes the entire guide mechanism to move in a straight line without any jamming.

[0037] like Figure 3 As shown, the guidance system (referring to the four installed...) Figure 1 After the structure is installed, the entire valve body 7 is inserted into it. Align the 45° mark on the outer wall of the valve body with the guide system mark, so that the guide system is evenly distributed on the upper and lower sides of the valve body 7. This ensures that the valve disc is evenly stressed after the valve is installed and is effectively supported by gravity.

[0038] Preferably, the spring seat 2 is made of stainless steel with a spherical design, and it only makes point contact with the valve disc, so it is not easily blocked by debris.

[0039] Preferably, the reed 3 is made of stainless steel, with an irregularly shaped thin sheet design, which is lightweight and connected to the spring seat to ensure the reliability of valve opening and closing.

[0040] Preferably, the springs 1 are made of stainless steel, and the four springs 1 are evenly distributed on the fluid guide 6 to form a "four-axis positioning" to ensure the stability of the valve disc. At the same time, the pre-compression springs form an internal preload to respond to changes in the fluid and regulate its movement.

[0041] Preferably, the pad 4 is made of stainless steel and connects the spring 3 to the spring seat 2 and the fluid guide 6.

[0042] After the spring loading system is installed, it is necessary to align the 45° mark on the outer wall of the valve body with the marking of the loading system, so that the spring loading system is evenly distributed on both sides of the valve body lifting ring and the cast surface, ensuring that the valve disc is effectively supported under gravity after the valve is installed.

[0043] In addition, this application also provides an assembly method for a shaftless distributed floating linear guide structure, including the following steps:

[0044] Step 1: Place the guide fluid 6.

[0045] Fluid guide 6 according to Figure 5 Place it according to the requirements, with the larger end facing upwards. The lower end of the guide tube 6 needs to be raised, and the raising block should be more than 400mm high and have a hollow structure, so that the end bolts will be installed later.

[0046] Step 2: Install the shaftless distributed floating linear guide structure.

[0047] After the guide tube 6 is placed, mark a 20° position line on the outer wall of the guide tube 6 with a colored pen according to the drawing requirements. For example... Figure 6 As shown, it includes components such as spring seat pad, spring 3, spring seat 2, and spring 1.

[0048] When installing the valve disc, the lower end must be properly lowered into the groove during the hoisting process. Observe whether it is properly positioned or if there is any interference. Then, remove the valve disc separately and place it into the valve body.

[0049] Step 3: Install the end caps.

[0050] Valve body such as Figure 7 Place it as shown and install the end cap. Mark the valve body at a 45° angle with a colored pen as required in the diagram.

[0051] Step 4: Assemble and install the valve body 7 and the guide fluid 6.

[0052] Hoist the guide tube 6, aligning it with the 45° mark on the outer wall of the valve body and the 20° mark on the guide tube, and slowly lower it into place (a guide rod can be inserted between the valve body 7 and the guide tube 6 during the descent to facilitate connection). Ensure that the four springs in the guide tube 6 are evenly distributed on both sides of the lifting ring and the cast surface. Install the end bolts and tighten them. Figure 8 As shown. Install a screw at the end of the end bolt, and adjust the bolt so that the notch aligns with the threaded hole on the fluid guide.

[0053] In summary, this application adopts a non-jamming design with an ingenious structural design, which causes the valve disc to be completely suspended in the valve body. There is no mechanical contact during the movement process, resulting in a long service life, maintenance-free operation, and suitability for harsh working conditions.

[0054] This application employs zero-resistance motion, resulting in high sealing reliability. The shaftless, distributed floating linear guide structure design means the valve disc is only subjected to fluid dynamics and spring force, resulting in extremely fast response and a flawless movement trajectory. The spring force is evenly distributed onto the valve seat through the back of the valve disc, ensuring 360° full-circumference synchronous contact with the valve seat and guaranteeing reliable valve sealing.

[0055] This application presents a simple and novel structure with wide applicability and convenient installation. Installation simply involves connecting the spring plate to the spring seat and then tightening it onto the fluid guide with bolts, ensuring easy, safe, and reliable installation. Furthermore, this structure is suitable for valves and containers with similar axially moving sealing structures, demonstrating broad versatility.

[0056] The above description is only a specific embodiment of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A shaftless distributed floating linear guide structure, characterized in that, The device includes a spring (1), a spring seat (2), a spring leaf (3), and a pad (4). The spring (1) is sleeved below the spring seat (2) and connected to the spring leaf (3) through the pad (4). One end of the spring leaf (3) is installed above the spring seat (2). The pad (4) is installed above the spring leaf (3), and the pad (4), the spring leaf (3), and the spring seat (2) are connected together by bolts.

2. The shaftless distributed floating linear guide structure according to claim 1, characterized in that, The pad (4), the spring (3), and the spring seat (2) are connected by bolts (5).

3. The shaftless distributed floating linear guide structure according to claim 2, characterized in that, The guide structure is connected by the pad (4), the bolt (5), and the guide fluid (6).

4. The shaftless distributed floating linear guide structure according to claim 3, characterized in that, The guide structure and the guide fluid (6) are installed inside the valve body (7).

5. The shaftless distributed floating linear guide structure according to claim 3, characterized in that, During installation, one end of the spring (1) is mounted on the spring seat (2), and the other end is disposed in the spring seat hole of the fluid guide (6).

6. The shaftless distributed floating linear guide structure according to claim 1, characterized in that, The spring seat (2) is made of stainless steel with a spherical structure.

7. The shaftless distributed floating linear guide structure according to claim 1, characterized in that, The reed (3) is made of stainless steel.

8. The shaftless distributed floating linear guide structure according to claim 1, characterized in that, The spring (1) is made of stainless steel.

9. The shaftless distributed floating linear guide structure according to claim 1, characterized in that, The pad (4) is made of stainless steel.

10. An assembly method for a shaftless distributed floating linear guide structure, characterized in that, Assembling the guide structure as described in any one of claims 1 to 9 includes the following steps: Step 1: Raise the large end of the guide fluid (6) upwards; Step 2: Make a 20° position line on the outer wall of the guide fluid, and install the pad (4), the spring (3), the spring (2) seat and the spring (1) in sequence. After trial installation and inspection of the valve disc, put it into the valve body (7) separately. Step 3: Place the valve body (7) as required, install the end cap, and mark it at a 45° position on its outer wall; Step 4: Hoist the fluid guide (6), align it with the 45° and 20° markings, lower it into place, so that the springs (1) are evenly distributed, install and tighten the end bolts, and adjust the bolt notches to align with the threaded holes by adjusting the screws.

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