A valve structure that facilitates quick installation

Abstract

This utility model proposes a valve structure for easy and rapid installation, belonging to the field of valve design technology, including: a valve body; a flange; and a clamping device. This utility model innovatively proposes a boltless valve connection method. By setting a radially sliding clamping device, an eccentric wheel transmission mechanism driven by a rotating rod, and a T-shaped sealing ring pre-installed in the flange, it achieves rapid installation and reliable sealing of the pipeline connection. This structure utilizes the rotation of the eccentric wheel to push the locking rod, which in turn pushes the clamping block to generate a clamping force on the pipeline flange, achieving a rigid sealing connection between the valve body and the pipeline. The clamping device can slide along the adjustment groove, accommodating pipeline flanges of different diameters within a certain range. Simultaneously, the sealing ring is fixed inside the flange, eliminating the need for traditional gasket installation. This achieves a quick and effective valve connection, and the locking can be released by reversing the rotation of the rod, making disassembly equally convenient and quick.

Description

Technical Field

[0001] This utility model relates to the field of valve design technology, and in particular to a valve structure that is easy to install quickly. Background Technology

[0002] In the field of valve design technology, especially for flanged valves involving pipeline connections, traditional installation methods generally rely on bolt tightening. This method requires operators to align the bolt holes of the valve body flange and the pipeline flange one by one and tighten a large number of bolts to achieve the necessary sealing preload. This operation is not only cumbersome, time-consuming, and labor-intensive, but also requires a large operating space, significantly increasing the difficulty in confined or hard-to-reach working environments. Furthermore, the uniformity of the bolt preload depends on the operator's experience and tool precision; uneven preload can lead to incomplete flange sealing, posing a risk of media leakage. Another prominent problem is the poor adaptability of traditional valve structures to pipeline flanges of different standards or sizes, lacking effective error tolerance and adjustment mechanisms. When faced with slightly misaligned or dimensionally different pipe openings, additional adjusting parts or complex on-site repair work are often required, further reducing installation efficiency. Therefore, there is an urgent need in the existing technology for a valve structure that can achieve rapid assembly and disassembly, reduce labor intensity, and possess good adaptability and reliable sealing performance. Utility Model Content

[0003] This invention proposes a valve structure that is easy to install quickly, in order to solve the problems mentioned in the background art, such as the time-consuming and labor-intensive connection and disassembly of existing valves, the high requirements for operating space, and the poor adaptability to pipes of different sizes.

[0004] The technical solution of this utility model is implemented as follows: The valve body includes a valve body with external threads on the outer circumference of both ends, and an eccentric wheel and a locking nut are connected in sequence at the external threads. The valve body is fixed with flanges at both ends, and the flanges are evenly provided with adjustment grooves in the circumferential direction, and limit grooves are provided in the adjustment grooves. A sealing ring and a positioning tongue are arranged sequentially around the center of the flange. One end of the positioning tongue is integrally connected to the flange, and the other end extends outward along the flange axis and is suspended in the air. A clamping device is slidably installed inside the adjustment groove.

[0005] By adopting the above technical solution, the positioning tongue is first inserted into the positioning groove of the pipe to be connected, and rotated to form an initial limit. Then, by pulling the rotating rod, the eccentric wheel rotates, pushing the lower end of the locking rod. This causes the upper and lower ends of the clamping block to move in opposite directions, completing the quick connection. In this way, rapid connection between valve bodies can be achieved. Furthermore, because the clamping device can adapt to pipes of different diameters, it improves the flexibility of adaptive adjustment to a certain extent, significantly shortens the working time of valve body connection, and simplifies the valve body connection process.

[0006] Preferably, the eccentric wheel and the locking nut are threadedly connected to the outer wall of the valve body, and a rotating rod is provided on the outer wall of the eccentric wheel.

[0007] By adopting the above technical solution, the pushing force on the rotating rod can be converted into the rotational force of the eccentric wheel, which in turn pushes the locking rod to move towards the clamping block, so that the upper end of the clamping block applies a pressure toward the valve body flange to the pipe flange, thereby forming a tight connection.

[0008] Preferably, the limiting groove is a T-shaped groove.

[0009] By adopting the above technical solution, the hammer-shaped limiting groove can make the limiting rod of the sliding block of the clamping device fit into the groove of the limiting groove near the sliding block, and the limiting teeth at the end of the limiting rod can penetrate into the "hammer head" of the hammer-shaped groove, laying a good structural foundation for the subsequent flexible sliding and instant limiting functions.

[0010] Preferably, a limiting block is installed in the limiting groove, and the limiting block is connected to a plurality of first springs, and the first springs are connected to an adjusting block.

[0011] Preferably, the end of the limiting rod is provided with teeth that have the same shape as the teeth on the limiting block but in the opposite direction.

[0012] By adopting the above technical solution, the shapes of the limiting block and the limiting tooth are matched. When the sliding block is pushed forward, the hypotenuse of the triangular limiting tooth pushes against the hypotenuse of the triangular limiting block, and the limiting tooth pushes the limiting block. The limiting block is compressed by the pushing force of the limiting tooth, causing the spring to contract backward, and the sliding block can move forward. However, when the sliding block is subjected to a backward force, the right-angled surface of the triangular limiting tooth contacts the right-angled surface of the triangular limiting block, forming a self-locking mechanism, and the slider is limited.

[0013] Preferably, an upper pressure plate and a lower pressure plate are fixedly connected to the upper and lower ends of the plurality of adjustment blocks respectively. A second spring is connected above the upper pressure plate, and the other end of the second spring is installed on the inner wall of the limiting groove. An adjustment rod is fixedly connected below the lower pressure plate, and the other end passes through the flange side wall and protrudes outward to form a protruding end.

[0014] By adopting the above technical solution, when it is necessary to move the slider to the outside of the flange circumference, pressing the protruding end of the adjusting rod can release the limiting tooth and pull the clamping device to slide.

[0015] Preferably, a positioning block is also installed on the flange surface.

[0016] By adopting the above technical solution, the positioning block can limit the rotation angle of the rotating rod.

[0017] Preferably, the sealing ring has a T-shaped cross-section and one end is fixedly connected to the inside of the flange.

[0018] By adopting the above technical solution, the T-shaped sealing ring increases the contact area with the flange, greatly increases the friction, and the sealing force will also increase accordingly, forming a very reliable sealing structure. Furthermore, one end is fixed inside the flange, eliminating the step of installing gaskets in the traditional connection method, further saving installation time.

[0019] Preferably, the clamping device includes a sliding block, with limit rods on both sides of the sliding block, and a fixing seat on a surface of the sliding block that is horizontal and perpendicular to the plane where the limit rods are located.

[0020] Preferably, a clamping block is rotatably connected to the fixed base, a third spring is connected to the upper end of the clamping block, the other end of the third spring is connected to the sliding block, and a telescopic locking rod is connected to the lower end of the clamping block, with the other end of the locking rod abutting against the side of the eccentric wheel.

[0021] By adopting the above technical solution, the limiting rod can drive the clamping device to slide, the fixed seat is used to fix the clamping block, the clamping block is subjected to the force of the locking rod, and the upper end applies pressure to the pipe flange. All parties cooperate to limit the connection position of the flange.

[0022] By adopting the above technical solution, the beneficial effects of this utility model are as follows: This invention innovatively proposes a boltless valve connection method. By incorporating a radially sliding clamping device, an eccentric wheel transmission mechanism driven by a rotating rod, and a T-shaped sealing ring pre-installed within the flange, it achieves rapid installation and reliable sealing of the pipeline connection. On one hand, the structure utilizes the rotation of the eccentric wheel to push the locking rod, which in turn pushes the clamping block to exert pressure on the pipeline flange, achieving a rigid sealing connection between the valve body and the pipeline. On the other hand, the clamping device can slide along the adjustment groove, accommodating pipeline flanges of different diameters within a certain range. Simultaneously, the sealing ring is fixed inside the flange, eliminating the need for traditional gasket installation, enabling a quick and effective valve connection. Furthermore, the locking mechanism can be released by reversing the rotation of the rod, making disassembly equally convenient and quick. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the locking device connection of this utility model; Figure 3 This is a front view of the flange of this utility model; Figure 4 This is a top view sectional diagram of the limiting groove of this utility model; Figure 5 This is a side view of the internal structure of the limiting groove of this utility model; Figure 6 This is a three-dimensional schematic diagram of the clamping structure of this utility model; Figure 7 This is a schematic diagram of the sealing ring shape; Figure 8 This is a schematic diagram of the three-dimensional structure of the positioning tongue.

[0025] in: 1. Locking nut; 101. Rotating rod; 102. Eccentric wheel; 2. Flange; 201. Adjusting groove; 2011. Limiting groove; 2012. Limiting block; 2013. Adjusting block; 2014. First spring; 2015. Second spring; 2016. Upper pressure plate; 2017. Lower pressure plate; 2018. Adjusting rod; 2019. Protruding end; 202. Positioning tongue; 203. Positioning block; 204. Sealing ring; 3. Valve body; 4. Clamping device; 401. Sliding block; 402. Limiting rod; 4021. Limiting tooth; 403. Fixed seat; 404. Clamping block; 405. Third spring; 406. Locking rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] refer to Figure 1 and Figure 2The outer surface of the valve body 3 is threaded. From the flange 2 towards the central axis of the valve body 3, eccentric wheels 102 and locking nuts 1 are sequentially screwed to both ends of the valve body 3 to complete the locking. Both the eccentric wheels 102 and the locking nuts 1 are connected to the valve body 3 by threads to ensure the accuracy and stability of power transmission. A rotating rod 101 is vertically fixed on the eccentric wheel 102, serving as the operation input end for the entire locking process. A positioning block 203 is provided on the surface of the flange 2 to limit the rotation angle of the rotating rod 101.

[0028] refer to Figure 1 , Figure 7 and Figure 8 Flange 2 is fixedly installed on the outside of valve body 3. With the center of the pipe opening as a reference, sealing ring 204 and locating tongue 202 are sequentially arranged in the radial direction of flange 2. The connected pipe has a locating groove that matches and fits the shape of the locating tongue. (Reference) Figure 7 The sealing ring 204 has a T-shaped cross-section. Its narrower end is fixedly embedded in the internal material of the flange 2, while its wider end contacts the surface of the pipe flange. Four radially arranged adjustment grooves 201 are evenly distributed from the outside of the positioning tongue 202 to the outer periphery of the flange 2. These adjustment grooves 201 are in an open state to facilitate the installation and adjustment of the clamping device 4.

[0029] refer to Figure 4 and Figure 5 Each adjusting groove 201 has a limiting groove 2011 machined in the middle layer of its inner side. A limiting mechanism is installed inside the limiting groove 2011, consisting of a limiting block 2012, a first spring 2014, and an adjusting block 2013. The limiting block 2012 is connected to the adjusting block 2013 via the first spring 2014, forming an elastic positioning system for limiting the clamping device. The upper and lower ends of the adjusting block 2013 are fixedly connected to an upper pressure plate 2016 and a lower pressure plate 2017, respectively. A second spring 2015 is connected above the upper pressure plate 2016, and an adjusting rod 2018 is integrally connected below the lower pressure plate 2017. The adjusting rod 2018 passes through the limiting groove 2011 and forms a pressable protruding end 2019 on the surface of the flange 2. The protruding end 2019 is located on the surface of the valve flange 2.

[0030] refer to Figure 6The number of clamping devices 4 is configured to be four according to the number of adjustment slots 201. The clamping devices 4 are slidably installed in the adjustment slots 201 of the flange 2. The clamping device 4 includes a sliding block 401, and limit rods 402 are installed on both sides of the sliding block 401. The ends of the limit rods 402 are machined with limit teeth 4021 that have the same shape as the limit block 2012 but are installed in the opposite direction. When the sliding block 401 is pushed forward, the inclined surfaces of the two triangles can slide relative to each other. When it slides past the limit block 2012, the limit block 2012 returns to its initial position under the action of the first spring 2014. At this time, if the slider moves backward, it will be blocked by the limit block 2012, thereby achieving the effect that the slider can only move forward and cannot move backward, realizing the self-locking of the clamping device 4. A fixed seat 403 is also provided on the sliding block 401. The fixed seat 403 is rotatably connected to a clamping block 404 via a rotating shaft. The upper end of the clamping block 404 is connected to the sliding block 401 via a third spring 405, and the lower end is connected to a telescopic locking rod 406. The other end of the locking rod 406 always maintains contact with the side of the eccentric wheel 102. The locking rod 406 is a common spiral telescopic structure in the prior art, which will not be described in detail here.

[0031] During installation, the valve body 3, which allows for quick connection, is first precisely inserted into the corresponding positioning groove of the pipe to be connected by accurately inserting the positioning tongue 202 on the flange 2, and initial positioning is achieved by rotation. Then, the operator first adjusts the position of the clamping device 4, and simultaneously adjusts the locking rod 406 to a suitable length. After adjustment, the rotating rod 101 is rotated, causing the eccentric wheel 102 to rotate and push the locking rod 406 radially outward, causing the clamping block 404 to rotate around the shaft on the fixed seat 403. The upper end of the clamping block 404 then applies a continuously increasing clamping force to the pipe flange 2. The clamping device 4 can be radially slidably adjusted within the adjusting groove 201 according to the actual diameter of the pipe flange 2 until it fits the size of the pipe flange 2. Once the size is suitable, one-way self-locking is achieved through the cooperation of the limiting tooth 4021 and the limiting block 2012. When disassembly is required, the clamping device 4 can be released by reversing the rotation lever 101. After the device is removed, pressing the protruding end 2019 of the adjusting lever 2018 will release the self-locking of the clamping device 4, allowing the clamping device 4 to slide back to its initial position. During the connection process, the T-shaped sealing ring 204 pre-installed in the flange 2 undergoes elastic deformation under the clamping force, achieving a reliable seal between the sealing interfaces.

[0032] This invention achieves rapid installation and disassembly of valves through the combination of mechanical transmission and sliding clamping, while also adapting to the connection requirements of pipelines with different diameters.

[0033] 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 valve structure that facilitates quick installation, characterized in that: The valve body (3) includes a valve body (3), and external threads are provided on the outer circumferential walls at both ends of the valve body (3). An eccentric wheel (102) and a locking nut (1) are connected in sequence at the external threads. The valve body (3) is fixed with flanges (2) at both ends. Adjustment grooves (201) are evenly provided in the circumferential direction of the flanges (2). Limiting grooves (2011) are provided in the adjustment grooves (201). A sealing ring (204) and a positioning tongue (202) are arranged sequentially around the center of the flange (2). One end of the positioning tongue (202) is integrally connected to the flange (2), and the other end extends outward along the axial direction of the flange (2) and is suspended in the air. A clamping device (4) is slidably installed in the adjustment groove (201); The clamping device (4) includes a sliding block (401), with limit rods (402) provided on both sides of the sliding block (401), and a fixing seat (403) provided on the surface of the sliding block (401) that is horizontal and perpendicular to the plane where the limit rods (402) are located. The end of the limiting rod (402) is provided with teeth (4021) that have the same shape as the teeth on the limiting block (2012) but in the opposite direction. A clamping block (404) is rotatably connected to the fixed base (403). A third spring (405) is connected to the upper end of the clamping block (404). The other end of the third spring (405) is connected to the sliding block (401). A locking rod (406) that passes through the sliding block (401) is connected to the lower end of the clamping block (404). The other end of the locking rod (406) abuts against the outer wall of the eccentric wheel (102).

2. The valve structure according to claim 1, characterized in that: The eccentric wheel (102) and the locking nut (1) are threadedly connected to the outer wall of the valve body (3), and a rotating rod (101) is provided on the outer wall of the eccentric wheel (102).

3. The valve structure according to claim 1, characterized in that: The limiting groove (2011) is a T-shaped groove.

4. The valve structure according to claim 1, characterized in that: A limiting block (2012) is installed in the limiting groove (2011). The limiting block (2012) is connected to a plurality of first springs (2014). The first springs (2014) are connected to an adjusting block (2013).

5. The valve structure according to claim 4, characterized in that: The upper and lower ends of several adjustment blocks (2013) are respectively fixedly connected to an upper pressure plate (2016) and a lower pressure plate (2017). A second spring (2015) is connected above the upper pressure plate (2016). The other end of the second spring (2015) is installed on the inner wall of the limiting groove (2011). An adjustment rod (2018) is fixedly connected below the lower pressure plate (2017). The other end passes through the side wall of the flange (2) and protrudes outward to form a protruding end (2019).

6. The valve structure according to claim 1, characterized in that: The flange (2) surface is also fitted with a positioning block (203).

7. The valve structure according to claim 1, characterized in that: The sealing ring (204) has a T-shaped cross-section and one end is fixedly connected to the inside of the flange (2).

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