A stop valve connecting seat with anti-rotation structure

Abstract

This utility model discloses a stop valve connector with an anti-rotation structure, belonging to the field of valve fitting technology. The connector includes a connector base, a connecting pipe, and a locking mechanism and a latching mechanism mounted on the connector base. The locking mechanism includes a first gear and a second gear meshing with each other, a first ratchet and a second ratchet fixed coaxially with the gears, a slidable connecting post, and a first pawl and a second pawl rotatably connected to both ends of the connecting post. By sliding the connecting post, the two pawls can be driven to simultaneously engage or disengage from the corresponding ratchet teeth, thereby achieving anti-rotation locking of the connector base. The latching mechanism includes a spring and a ball joint for quick fixing between components. Through the above structure, this utility model has the advantages of reliable anti-rotation, stable locking, and convenient installation, effectively improving the safety and reliability of the connection.

Description

Technical Field

[0001] This utility model relates to the field of valve fittings technology, and in particular to a gate valve connector with an anti-rotation structure. Background Technology

[0002] Gate valves are key control components in industrial pipeline systems used to cut off or regulate the flow of media. Gate valves are connected to pipelines or equipment via connectors, and the structural stability and connection reliability of these connectors directly affect the sealing safety and stable operation of the entire pipeline system.

[0003] In actual operating conditions, the connection points of gate valves are often subjected to vibrations from pipelines, impacts from media flow, and operating torque generated when the valve is opened or closed. Under the continuous action of these dynamic external forces, traditional connection seats that rely solely on bolt preload or friction for fixation are prone to slight angular deflection, which gradually loosens and rotates over time. This unintended rotation not only changes the operating direction of the valve handwheel, causing inconvenience for on-site maintenance, but more seriously, it may damage the sealing performance of the connection, leading to media leakage and posing a safety hazard.

[0004] To address the rotation problem, existing technologies typically employ methods such as adding anti-loosening washers, using high-strength bolts to increase preload, or drilling pins for positioning after installation. However, methods like adding anti-loosening washers have limited effectiveness under strong vibration or high torque environments and still cannot provide absolutely reliable anti-rotation locking. While drilling pins can achieve fixation, they are destructive installation methods, increasing the complexity of the installation process and causing significant inconvenience for subsequent disassembly, maintenance, or angle adjustments, lacking flexibility.

[0005] Therefore, this utility model proposes a stop valve connector with an anti-rotation structure to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a gate valve connector with an anti-rotation structure, which aims to improve the problem that existing gate valve connectors are prone to accidental rotation under force or vibration during use, resulting in unstable connection.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a stop valve connecting seat with an anti-rotation structure, comprising a connecting seat, a connecting pipe fixedly connected inside the connecting seat, and a locking mechanism disposed on the connecting seat.

[0008] The locking mechanism includes a first ratchet, a second ratchet, a first gear, a second gear, a connecting post, a first pawl, and a second pawl.

[0009] Furthermore, the first ratchet is fixed to the connecting seat, the first gear is coaxially and fixedly connected to the first ratchet, the second gear is coaxially and fixedly connected to the second ratchet, and the first gear and the second gear mesh with each other; the connecting post is slidably arranged, and the first pawl and the second pawl are respectively rotatably connected to the two ends of the connecting post, the pawl part of the first pawl is adapted to the tooth groove of the first ratchet, and the pawl part of the second pawl is adapted to the tooth groove of the second ratchet; by driving the connecting post to slide, the first pawl and the second pawl can synchronously engage or disengage from the tooth grooves of the first ratchet and the second ratchet.

[0010] Preferably, it also includes a snap-fit ​​mechanism disposed on the connecting seat.

[0011] Preferably, the latching mechanism includes a fixing block and a latching block that cooperates with the fixing block.

[0012] Preferably, the latching mechanism further includes a spring disposed within the fixing block, and a locking ball movably disposed within the fixing block and subjected to elastic force by the spring.

[0013] Preferably, the latching mechanism further includes a protective sleeve fitted over the outside of the fixing block, the protective sleeve being used to cover the spring and the locking ball.

[0014] Preferably, it also includes a connecting block fixedly connected to the outer wall of the connecting seat.

[0015] Preferably, it further includes a connecting plate that overlaps and is fixedly connected to the connecting seat and the connecting block.

[0016] Preferably, the claws of the first pawl and the second pawl face opposite directions to achieve bidirectional locking.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the valve connecting seat is prone to rotation due to vibration or external force, resulting in unstable connection, by setting a locking mechanism consisting of gears, ratchet and pawl. It achieves the technical effect of reliably locking the connecting seat, preventing accidental rotation and ensuring safe and reliable connection.

[0018] 2. This utility model solves the problems of cumbersome connection process and inconvenient fixing between components in the prior art by setting a buckling mechanism consisting of a spring, a locking ball and a locking block, thereby achieving the technical effects of rapid installation, convenient fixing and improved assembly efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of a stop valve connector with an anti-rotation structure proposed in this utility model. Figure 2 This is a schematic diagram of a connecting block for a stop valve connecting seat with an anti-rotation structure proposed in this utility model; Figure 3 This is a schematic diagram of a locking mechanism for a stop valve connecting seat with an anti-rotation structure proposed in this utility model. Figure 4 This is a schematic diagram of a stop valve connecting seat with an anti-rotation structure proposed in this utility model; Figure 5 This is a schematic diagram of the snap-fit ​​mechanism of a stop valve connector with an anti-rotation structure proposed in this utility model.

[0020] Legend: 1. Connecting seat; 2. Connecting block; 3. Connecting plate; 4. Locking mechanism; 401. First gear; 402. Second gear; 403. First ratchet; 404. Second ratchet; 405. Connecting post; 406. First pawl; 407. Second pawl; 5. Connecting tube; 6. Buckling mechanism; 601. Buckling block; 602. Fixing block; 603. Protective sleeve; 604. Buckling ball; 605. Spring. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-5 The present invention provides an embodiment of a stop valve connecting seat with an anti-rotation structure, comprising a connecting seat 1 as an installation base and a connecting pipe 5 fixedly connected inside the connecting seat 1, the connecting pipe 5 being used to transport the medium; the connecting seat 1 is also provided with a locking mechanism 4 to realize the anti-rotation function and a buckle mechanism 6 to realize quick fixed connection; in order to enhance the rigidity of the overall structure, a connecting block 2 is fixedly connected to the outer side wall of the connecting seat 1, and a connecting plate 3 is provided to overlap and simultaneously fix the connecting seat 1 and the connecting block 2; As the core of this solution, the locking mechanism 4 is set on the connecting seat 1. Through a precise mechanical mating structure, it effectively prevents the connecting seat 1 from rotating relative to the external valve body connected to it. The locking mechanism 4 includes a first ratchet 403 and a second ratchet 404. In a preferred embodiment, the first ratchet 403 is fixed to the connecting seat 1 by a key connection or integral molding, while the second ratchet 404 has a reserved installation interface for fixed connection with the external valve body to be connected by bolts or splines, thereby converting the relative rotation between the connecting seat 1 and the valve body into the relative rotation between the first ratchet 403 and the second ratchet 404. The locking mechanism 4 also includes a gear transmission part that is linked to the ratchet, specifically a first gear 401 and a second gear 402. The first gear 401 is coaxially arranged and fixedly connected to the first ratchet 403, and the second gear 402 is coaxially arranged and fixedly connected to the second ratchet 404. The teeth of the first gear 401 and the second gear 402 mesh with each other to ensure the synchronicity and correlation of the actions between the first ratchet 403 and the second ratchet 404.

[0023] The locking mechanism 4 further includes a pawl part responsible for performing the locking action, specifically a connecting post 405, and a first pawl 406 and a second pawl 407 rotatably connected to both ends of the connecting post 405; the connecting post 405 is installed in the guide groove of the connecting seat 1 and can slide axially, and the pawls of the first pawl 406 and the second pawl 407 are precisely adapted to the tooth groove profiles of the first ratchet 403 and the second ratchet 404, respectively; when locking is required, by applying an axial thrust to the connecting post 405, the connecting post 405 slides, thereby... The first pawl 406 and the second pawl 407 are driven to swing synchronously around their respective rotation connection points, so that their respective pawls are precisely engaged in the tooth grooves of the first ratchet 403 and the second ratchet 404. In this engaged state, the rotation of the ratchet is restricted by the pawls, thereby realizing the anti-rotation locking of the connecting seat 1. In a specific embodiment, the pawls of the first pawl 406 and the second pawl 407 face opposite directions. When they are engaged in the ratchet tooth grooves at the same time, they can restrict the rotation in both directions at the same time, thereby realizing reliable bidirectional locking. The latching mechanism 6 mainly includes a fixing block 602 and a latching block 601 that cooperates with the fixing block 602. During assembly, the fixing block 602 is fixed to the connecting seat 1 by bolt connection or integral molding, while the latching block 601 is fixedly connected to the external valve body to be connected. Specifically, the fixing block 602 has an internal cavity, in which a spring 605 is placed. One end of the spring 605 abuts against the bottom of the cavity, and a retaining ball 604 is disposed at the other end of the spring 605. Under the continuous elastic force of the spring 605, part of the spherical surface of the retaining ball 604 can elastically extend out of the mating surface of the fixing block 602. Correspondingly, a retaining groove is provided on the mating surface of the retaining block 601, which is adapted to the shape and size of the extended part of the retaining ball 604. During the docking and installation of the connecting seat 1 and the external valve body, the guide slope of the locking block 601 first contacts and squeezes the locking ball 604, causing the locking ball 604 to overcome the elastic force of the spring 605 and retract into the cavity of the fixing block 602. When the connecting seat 1 and the external valve body are fully docked, the locking ball 604 moves exactly above the locking groove on the locking block 601. At this time, under the rapid push of the spring 605, the locking ball 604 will bounce into the locking groove with a crisp sound. Through this ball positioning method, the axial locking and precise positioning between the connecting seat 1 and the external valve body are achieved. To protect the internal moving components of the latching mechanism 6, the latching mechanism 6 also includes a protective sleeve 603. The protective sleeve 603 is installed on the outside of the fixing block 602 by means of snap-fit ​​or threaded connection, completely covering the mounting area of ​​the spring 605 and the locking ball 604, effectively preventing external dust, liquid or hard particles from entering, thereby ensuring the flexibility of the latching mechanism 6 in operation and the reliability of long-term use. As a preferred embodiment, in order to enhance the structural strength and rigidity of the overall device, the shut-off valve connecting seat with anti-rotation structure also includes a connecting block 2. The connecting block 2 is fixedly connected to the outer wall of the connecting seat 1 by welding or integral molding, providing additional support for the overall structure. As a further optimization of the aforementioned scheme, in order to form a more robust reinforced structure, the stop valve connecting seat with anti-rotation structure also includes a connecting plate 3. The connecting plate 3 is plate-shaped and overlaps the surfaces of the connecting seat 1 and the connecting block 2. It is simultaneously fixedly connected to the connecting seat 1 and the connecting block 2 by welding or bolting, thereby firmly integrating the connecting seat 1 and the connecting block 2 into one unit. In a preferred embodiment for achieving efficient bidirectional locking, the first pawl 406 and the second pawl 407 in the locking mechanism 4 are arranged in a mirror or opposite manner. Specifically, the pawl of the first pawl 406 faces in the opposite direction to the pawl of the second pawl 407. This structural arrangement allows the clockwise and counterclockwise rotation directions to be restricted when the two pawls are engaged in the ratchet tooth groove at the same time.

[0024] Working principle: During installation, the shut-off valve with this connecting seat 1 is connected to the pipeline or equipment flange. During the connection process, the locking block 601 on the external valve body first squeezes the locking ball 604 on the fixing block 602, causing the locking ball 604 to retract while compressing the spring 605. When the connection is fully in place, the locking ball 604 automatically springs into the preset slot on the locking block 601 under the elastic force of the spring 605, realizing rapid axial positioning and fixing. The whole process does not require additional tools and is easy to operate.

[0025] When it is necessary to prevent the shut-off valve from rotating during use, the connecting pin 405 is operated to slide axially. The sliding of the connecting pin 405 will synchronously drive the first pawl 406 and the second pawl 407, which are rotatably connected to it, to swing. This causes the pawl of the first pawl 406 to engage in the tooth groove of the first ratchet 403 fixed to the connecting seat 1, while the pawl of the second pawl 407 engages in the tooth groove of the second ratchet 404 fixed to the external valve body. Since the first ratchet 403 and the second ratchet 404 are fixed to the connecting seat 1 and the external valve body respectively, the engagement of the pawls restricts the relative rotation between the two ratchets, thereby effectively locking the relative rotation between the connecting seat 1 and the external valve body, achieving the purpose of preventing rotation.

[0026] When it is necessary to unlock or disassemble, reverse the operation of the connecting pin 405 to disengage the first pawl 406 and the second pawl 407 from the tooth grooves of their respective ratchet wheels, thereby restoring the free rotation state of the connecting seat 1; at the same time, press the retaining ball 604 to disengage it from the retaining groove, thereby separating the connecting seat 1 from the external valve body.

Claims

1. A stop valve connector with an anti-rotation structure, comprising: The connecting seat (1) and the connecting pipe (5) fixedly connected inside the connecting seat (1) are characterized in that they further include a locking mechanism (4) provided on the connecting seat (1). The locking mechanism (4) includes a first ratchet (403) and a second ratchet (404). The first ratchet (403) is fixed on the connecting seat (1), and the second ratchet (404) is used to fix the valve body to be connected. The locking mechanism (4) further includes a first gear (401) and a second gear (402). The first gear (401) is coaxially and fixedly connected to the first ratchet (403), and the second gear (402) is coaxially and fixedly connected to the second ratchet (404). The first gear (401) and the second gear (402) mesh with each other. The locking mechanism (4) further includes a slidable connecting post (405), and a first pawl (406) and a second pawl (407) rotatably connected to both ends of the connecting post (405). The pawl of the first pawl (406) is adapted to the tooth groove of the first ratchet (403), and the pawl of the second pawl (407) is adapted to the tooth groove of the second ratchet (404). When the connecting post (405) slides, it drives the first pawl (406) and the second pawl (407) to simultaneously engage or disengage from the first ratchet (403) and the second ratchet (404).

2. The shut-off valve connecting seat with anti-rotation structure according to claim 1, characterized in that, It also includes a latching mechanism (6) disposed on the connecting seat (1).

3. The shut-off valve connector with anti-rotation structure according to claim 2, characterized in that, The latching mechanism (6) includes a fixing block (602) and a latching block (601) that cooperates with the fixing block (602).

4. The shut-off valve connector with anti-rotation structure according to claim 3, characterized in that, The latching mechanism (6) further includes a spring (605) disposed within the fixing block (602) and a locking ball (604) movably disposed within the fixing block (602) and subjected to elastic force by the spring (605).

5. The shut-off valve connector with anti-rotation structure according to claim 4, characterized in that, The buckling mechanism (6) also includes a protective sleeve (603), which is fitted over the outside of the fixing block (602) to cover the spring (605) and the locking ball (604).

6. The shut-off valve connecting seat with anti-rotation structure according to claim 1, characterized in that, It also includes a connecting block (2), which is fixedly connected to the outer wall of the connecting seat (1).

7. The shut-off valve connector with anti-rotation structure according to claim 6, characterized in that, It also includes a connecting plate (3), which overlaps and is fixedly connected to the connecting seat (1) and the connecting block (2).

8. The shut-off valve connecting seat with anti-rotation structure according to claim 1, characterized in that, The first pawl (406) and the second pawl (407) have their claws facing opposite directions to achieve bidirectional locking.

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