Mechanical multifunctional safety valve

Abstract

The utility model relates to the technical field of safety valves, in particular to a mechanical multifunctional safety valve which comprises a valve body and a handle assembly, the handle assembly comprises a rotating shaft, a handle body, a lifting adjusting assembly and a limiting assembly, the rotating shaft is arranged on the valve body, the handle body is arranged above the rotating shaft, and the lifting adjusting assembly is arranged above the handle body. The lifting adjusting assembly comprises a first baffle, a second baffle, a cover body, a driving block, a worm gear, a worm and a screw rod, the first baffle and the second baffle are further arranged on the rotating shaft, and according to the mechanical multifunctional safety valve, the driving block rotates the worm, drives the worm gear to rotate and drives the screw rod to ascend and descend, so that the positioning block accurately falls into the positioning groove of the valve body; the hierarchical control of the valve opening is realized; if the positioning block is completely inserted into the positioning groove of the valve body, positioning of the rotating shaft at the position is achieved, corresponding positioning grooves are formed in the completely-opened position and the completely-closed position of the valve body so that it can be guaranteed that the valve body can be stably in the normally-opened or normally-closed state, and the stability of the valve body is guaranteed.

Description

A mechanical multi-functional safety valve Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically a mechanical multi-functional safety valve. Background Technology

[0002] A safety valve is a type of valve used to control the opening and closing of pipelines. Traditional safety valves can only be controlled by operators to adjust the size of the valve body opening and closing. This process is stepless adjustment. However, under certain specific needs, such as when the valve body needs to be opened to a certain size, the shaft is prone to being accidentally rotated, making it impossible to stably adjust the valve opening size. Moreover, traditional safety valves do not have protective positioning devices, making it easy for the valve to be easily opened or closed, which is inconvenient to use. Summary of the Invention

[0003] Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a mechanical multi-functional safety valve.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mechanical multi-functional safety valve, comprising a valve body and a handle assembly. The handle assembly includes a rotating shaft, a handle body, a lifting adjustment assembly, and a limiting assembly. The rotating shaft is mounted on the valve body, and the handle body is positioned above the rotating shaft. The lifting adjustment assembly includes a first baffle, a second baffle, a cover, a drive block, a worm gear, a worm, and a screw. The rotating shaft also has the first and second baffles, both positioned below the handle body. The cover is also mounted on the first baffle. The shroud contains the worm gear and two sets of worm wheels. The worm gear meshes with the two sets of worm wheels. Both ends of the worm gear pass through the shroud and are connected to the drive block. Two sets of screws are rotatably mounted on the second baffle. The screws pass through the first baffle and the shroud and are connected to the center of the worm wheels. The limiting component includes a positioning block and a connecting piece. The positioning block is connected to the connecting piece, and the connecting piece is threadedly connected to the two sets of screws. The second baffle also has through holes adapted to the positioning block. The valve body has several sets of positioning grooves adapted to the positioning block.

[0007] To facilitate adjustment of the height of the positioning block, this utility model is improved by including a lifting plate and an elastic element in the connecting component, wherein the lifting plate has screw holes on both sides that are adapted to the screw rod.

[0008] Preferably, the elastic element includes a spring and a telescopic rod, the spring is sleeved on the telescopic rod, and the upper and lower ends of the spring and the telescopic rod are respectively connected to the lifting plate and the positioning block.

[0009] Preferably, the lower part of the positioning block is arc-shaped.

[0010] Preferably, the drive block is provided with friction texture.

[0011] Preferably, the handle body is provided with several sets of friction flanges.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a mechanical multi-functional safety valve, which has the following advantages:

[0014] This mechanical multi-functional safety valve uses a drive block to rotate a worm gear, which in turn rotates the worm wheel and drives the screw to rise and fall, allowing the positioning block to accurately fall into the positioning groove of the valve body, thus achieving graded control of the valve opening.

[0015] If the positioning block is fully inserted into the positioning groove of the valve body, the shaft is positioned at that location. Corresponding positioning grooves are set at the fully open and fully closed positions of the valve body to ensure that the valve body can be stably in the normally open or normally closed state, thus ensuring the stability of the valve body. Attached Figure Description

[0016] Figure 1 is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 is a side view of the structure of this utility model;

[0018] Figure 3 is a front view schematic diagram of the structure of this utility model without the cover;

[0019] Figure 4 is a partial bottom view of the structure of this utility model.

[0020] In the diagram: 1. Valve body; 2. Rotary shaft; 3. Handle body; 4. First baffle; 5. Second baffle; 6. Cover; 7. Drive block; 8. Worm gear; 9. Worm; 10. Screw; 11. Lifting plate; 12. Spring; 13. Telescopic rod; 14. Friction flange; 15. Positioning block. 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] Please refer to Figures 1-4. A mechanical multi-functional safety valve includes a valve body 1 and a handle assembly. The handle assembly includes a rotating shaft 2, a handle body 3, a lifting adjustment assembly, and a limiting assembly. The rotating shaft 2 is mounted on the valve body 1, and the handle body 3 is mounted above the rotating shaft 2. The lifting adjustment assembly includes a first baffle 4, a second baffle 5, a cover 6, a drive block 7, a worm gear 8, a worm 9, and a screw 10. The first baffle 4 and the second baffle 5 are also mounted on the rotating shaft 2. Both the first baffle 4 and the second baffle 5 are located below the handle body 3. The cover 6 is also mounted on the first baffle 4, and a certain component is disposed inside the cover 6. The valve body 1 is provided with a worm gear 9 and two sets of worm wheels 8. The worm gear 9 meshes with the two sets of worm wheels 8. Both ends of the worm gear 9 pass through the cover 6 and are connected to the drive block 7. Two sets of screws 10 are rotatably mounted on the second baffle 5. The screws 10 pass through the first baffle 4 and the cover 6 and are connected to the center of the worm wheels 8. The limiting component includes a positioning block 15 and a connecting piece. The positioning block 15 is connected to the connecting piece at the top. The connecting piece is threadedly connected to the two sets of screws 10. The second baffle 5 is also provided with a through hole adapted to the positioning block 15. The valve body 1 is provided with several sets of positioning grooves adapted to the positioning block 15.

[0023] The operator rotates the drive block 7 (the surface friction texture increases the gripping force), driving the worm 9 to rotate. The worm 9 meshes with two sets of worm wheels 8, transmitting the rotational motion to the worm wheels 8. The center of the worm wheels 8 is fixedly connected to the screw 10. When the worm wheels 8 rotate, they drive the screw 10 to rotate synchronously. The two sets of screws 10 can drive the connecting parts to rise and fall. When the positioning block 15 is aligned with the positioning groove of the valve body 1, the operator continues to rotate the drive block 7. Under the thrust of the screw 10, the positioning block 15 inserts into the positioning groove, realizing the graded locking of the valve opening (such as fully open, 1 / 2 open, fully closed, and other preset positions).

[0024] In this embodiment, the connecting component includes a lifting plate 11 and an elastic element. The lifting plate 11 has screw holes on both sides that are adapted to the screw 10. The elastic element includes a spring 12 and a telescopic rod 13. The spring 12 is fitted onto the telescopic rod 13. Both the upper and lower ends of the spring 12 and the telescopic rod 13 are connected to the lifting plate 11 and the positioning block 15, respectively. The positioning block 15 has an arc-shaped lower section. The elastic element, composed of the spring 12 and the telescopic rod 13, connects the lifting plate 11 and the positioning block 15. When the positioning block 15 contacts the edge of the positioning groove, the spring 12 first compresses to buffer the impact, preventing damage to the valve body 1 from rigid impact. Simultaneously, hand feedback (sudden change in resistance) indicates to the operator that positioning is about to be completed. After the positioning block 15 is fully inserted, the self-locking characteristics of the screw 10 and the worm gear 8, combined with the preload of the spring 12, effectively prevent valve opening and closing due to accidental collisions or misoperation.

[0025] Positioning block 15 is at its highest point and not inserted into any positioning groove. The rotating shaft 2 can rotate freely. Rotating drive block 7 and worm 9 drive worm wheel 8 and screw 10 to rotate counterclockwise. Lifting plate 11 and positioning block 15 descend synchronously. Initially, the arc-shaped edge of positioning block 15 contacts valve body 1, which can play a pre-positioning role in conjunction with the positioning groove. When positioning block 15 needs to be inserted into the positioning groove, positioning block 15 is aligned with the positioning groove. Continue to drive drive block 7 with friction texture so that the insertion block is inserted into the positioning groove. At this time, the elastic element is compressed, and with the self-locking of worm wheel 8 and worm 9, the rotating shaft 2 is fixed.

[0026] In this embodiment, the handle body 3 is provided with several sets of friction flanges 14 to ensure the stability of the handle body 3 during driving.

[0027] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0028] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A mechanical multi-functional safety valve, comprising a valve body (1) and a handle assembly, characterized in that, The handle assembly includes a rotating shaft (2), a handle body (3), a lifting adjustment assembly, and a limiting assembly. The rotating shaft (2) is provided on the valve body (1), and the handle body (3) is provided above the rotating shaft (2). The lifting adjustment assembly includes a first baffle (4), a second baffle (5), a cover (6), a drive block (7), a worm gear (8), a worm (9), and a screw (10). The first baffle (4) and the second baffle (5) are also provided on the rotating shaft (2). The first baffle (4) and the second baffle (5) are both provided below the handle body (3). The cover (6) is also provided on the first baffle (4). The worm (9) and two sets of worm gears (8) are provided inside the cover (6). The worm (9) meshes with two sets of worm wheels (8). The two ends of the worm (9) pass through the cover (6) and are connected to the drive block (7). Two sets of screws (10) are rotatably arranged on the second baffle (5). The screws (10) pass through the first baffle (4) and the cover (6) and are connected to the center of the worm wheel (8). The limiting component includes a positioning block (15) and a connecting piece. The positioning block (15) is connected to the connecting piece. The connecting piece is threadedly connected to the two sets of screws (10). The second baffle (5) is also provided with a through hole that matches the positioning block (15). The valve body (1) is provided with several sets of positioning grooves that match the positioning block (15).

2. The mechanical multi-functional safety valve according to claim 1, characterized in that, The connector includes a lifting plate (11) and an elastic element. The lifting plate (11) has screw holes on both sides that are adapted to the screw (10).

3. A mechanical multi-functional safety valve according to claim 2, characterized in that, The elastic element includes a spring (12) and a telescopic rod (13). The spring (12) is sleeved on the telescopic rod (13). The upper and lower ends of the spring (12) and the telescopic rod (13) are respectively connected to the lifting plate (11) and the positioning block (15).

4. A mechanical multi-functional safety valve according to claim 3, characterized in that, The lower part of the positioning block (15) is arc-shaped.

5. A mechanical multi-functional safety valve according to claim 4, characterized in that, The drive block (7) is provided with friction texture.

6. A mechanical multi-functional safety valve according to claim 5, characterized in that, The handle body (3) is provided with several sets of friction flanges (14).

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