Manual valve convenient to operate

Abstract

The utility model discloses a manual valve convenient to operate, which belongs to the field of manual valves and comprises a valve body and a connecting shaft, a valve plate is arranged in the valve body, a supporting seat is arranged at the upper end of the valve body, a transmission box is arranged on the supporting seat, and the lower end of the connecting shaft is connected onto the valve plate. The hexagonal groove is formed in the tail end of the worm and used in cooperation with the driving assembly, the driving assembly can be detached for storage when adjustment is not needed, irrelevant personnel are prevented from rotating and adjusting the valve plate, the universal joint is arranged between the driving rod and the connecting rod, the angle of the adjusting wheel can be changed at any angle, and the flexibility during operation is improved; the angle scale marks are arranged on the cover plate and used in cooperation with the angle indicating assembly, the adjusting angle of the valve plate can be checked in real time, the valve plate can be accurately adjusted, the adjusting accuracy is improved, the use adaptability is high, the installation sleeve is arranged on the inner shaft, the locking pressing plate is installed on the screw rod, the initial direction of the pointer can be adjusted, and the use is convenient. And correction work is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of manual valves, and in particular to a convenient manual valve. Background Technology

[0002] A manual valve is a valve that controls the flow of fluids (liquids, gases, or powders) through manual operation (such as rotation, levering, or pressing). It is widely used in industrial, civil, and commercial fields to regulate, cut off, or change the direction of fluid flow. Manual valves include ball valves and butterfly valves, with butterfly valves being suitable for low-pressure, high-flow-rate applications.

[0003] In existing manual butterfly valves, to facilitate operation and prevent the valve plate from rotating due to fluid pressure after adjustment, a worm gear is typically used for driving adjustment. The self-locking mechanism of the worm gear and worm ensures operational stability after adjustment. However, in manual butterfly valves, the adjusting wheel that drives the worm is fixedly connected to the worm and cannot be disassembled for storage. Unauthorized personnel can rotate and adjust it, resulting in poor safety. Furthermore, the relative angle between the adjusting wheel and the worm cannot be adjusted, limiting operational flexibility. Because manual butterfly valves lack a structure to precisely determine the rotation angle, the valve plate's rotation angle cannot be accurately adjusted, leading to poor adjustment precision and generally mediocre performance. Utility Model Content

[0004] The main objective of this invention is to provide a convenient manual valve that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A convenient manual valve includes a valve body and a connecting shaft. The valve body has a valve plate inside and a support seat at its upper end. A transmission box is mounted on the support seat. The lower end of the connecting shaft is connected to the valve plate, and the upper end of the connecting shaft passes through the support seat and is disposed inside the transmission box. A support sleeve is mounted on the transmission box, and a worm gear and a worm are respectively mounted in the transmission box and the support sleeve. A drive assembly is connected to the end of the worm. A cover plate is mounted on the upper end of the transmission box, and angle scale lines are provided on the cover plate. The upper end of the connecting shaft passes through the cover plate, and an angle indicating assembly is provided at the upper end of the connecting shaft.

[0007] Preferably, the valve body is provided with mounting flanges at both ends, and the mounting flanges are provided with mounting holes.

[0008] Preferably, the worm is meshed with a worm wheel, and a hexagonal groove is provided at the end of the worm, through which the drive assembly is connected to the worm.

[0009] Preferably, the drive assembly includes a drive rod, a universal joint, a connecting rod, a hexagonal plug, and an adjusting wheel. The drive rod and the connecting rod are connected by the universal joint, the hexagonal plug is installed at the end of the connecting rod, and the adjusting wheel is fixed to the end of the drive rod.

[0010] Preferably, the angle indicating component includes an inner shaft, a screw, a mounting sleeve, a pointer, and a locking plate. The inner shaft is fixedly connected to the screw and is mounted on the upper end of the connecting shaft. The mounting sleeve is fixedly connected to the pointer and is sleeved on the inner shaft. The locking plate is connected to the screw.

[0011] Compared with the prior art, this utility model has the following advantages: This convenient manual valve, by opening a hexagonal groove at the end of the worm gear and using it in conjunction with the drive assembly, allows the drive assembly to be disassembled and stored when no adjustment is needed, preventing unauthorized personnel from rotating and adjusting the valve plate. A universal joint is provided between the drive rod and the connecting rod, allowing the angle of the adjusting wheel to be changed at any angle, improving the flexibility of operation. An angle scale line is provided on the cover plate, which, in conjunction with the angle indicator assembly, allows for real-time viewing of the valve plate's adjustment angle, enabling precise adjustment of the valve plate and improving adjustment accuracy. It has high adaptability. The mounting sleeve is set on the inner shaft, and a locking pressure plate is installed on the screw, which allows for adjustment of the initial direction of the pointer, facilitating calibration work. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the transmission box of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the drive component of this utility model;

[0015] Figure 4 This is a structural schematic diagram of the angle indicator component of this utility model.

[0016] In the diagram: 1. Valve body; 2. Valve plate; 3. Support base; 4. Transmission box; 5. Support sleeve; 6. Connecting shaft; 7. Worm gear; 8. Worm; 9. Drive assembly; 901. Drive rod; 902. Universal joint; 903. Connecting rod; 904. Hexagonal plug; 905. Adjusting wheel; 10. Cover plate; 11. Angle scale line; 12. Angle indicator assembly; 1201. Inner shaft; 1202. Screw; 1203. Mounting sleeve; 1204. Pointer; 1205. Locking pressure plate; 13. Hexagonal groove; 14. Mounting flange. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-4 As shown, a convenient manual valve includes a valve body 1 and a connecting shaft 6. The valve body 1 has a valve plate 2 inside, and a support base 3 at its upper end. A transmission box 4 is mounted on the support base 3. The lower end of the connecting shaft 6 is connected to the valve plate 2, and the upper end of the connecting shaft 6 passes through the support base 3 and is located within the transmission box 4. A support sleeve 5 is mounted on the transmission box 4, and a worm gear 7 and a worm 8 are respectively located in the transmission box 4 and the support sleeve 5. A drive assembly 9 is connected to the end of the worm 8. A cover plate 10 is located at the upper end of the transmission box 4, and angle scale lines 11 are provided on the cover plate 10. The upper end of the connecting shaft 6 passes through the cover plate 10, and an angle indicating assembly 12 is located at the upper end of the connecting shaft 6. Mounting flanges 14 are provided at both ends of the valve body 1, and mounting holes are provided on the mounting flanges 14. The worm 8 is meshed with the worm gear 7, and a hexagonal groove 13 is formed at the end of the worm 8. The drive assembly 9 is connected to the worm 8 through the hexagonal groove 13.

[0019] When installing a manual valve, the valve body 1 is installed into the pipeline via mounting flanges 14 at both ends. The valve plate 2 is used to open and close the pipeline. When it is necessary to rotate and adjust the valve plate 2 inside the valve body 1, the drive assembly 9 is connected to the hexagonal groove 13 at the end of the worm gear 8. The drive assembly 9 rotates the worm gear 8, causing it to rotate inside the support sleeve 5 and apply force to the worm wheel 7. The worm wheel 7, under this force, rotates inside the transmission box 4, thereby rotating the connecting shaft 6. The connecting shaft 6 then rotates the valve plate 2, achieving the purpose of opening and closing the valve or regulating the flow rate. During adjustment, the angle indicator assembly 12 rotates along with the connecting shaft 6. The position of the angle indicator assembly 12 relative to the angle scale line 11 on the cover plate 10 indicates the rotation angle of the connecting shaft 6, allowing for precise adjustment of the valve plate 2's rotation angle for accurate control. After adjustment, the drive assembly 9 can be removed and stored, preventing unauthorized personnel from rotating the regulating valve.

[0020] According to the above implementation scheme, the drive assembly 9 includes a drive rod 901, a universal joint 902, a connecting rod 903, a hexagonal plug 904, and an adjusting wheel 905. The drive rod 901 and the connecting rod 903 are connected through the universal joint 902. The hexagonal plug 904 is installed at the end of the connecting rod 903, and the adjusting wheel 905 is fixed at the end of the drive rod 901.

[0021] When using the drive assembly 9, the hexagonal plug 904 at the end of the connecting rod 903 is connected to the hexagonal slot 13. The adjusting wheel 905 rotates the drive rod 901, which in turn applies force to the worm gear 8 through the universal joint 902 and the connecting rod 903, thereby driving the worm gear 8 for adjustment and control. During the use of the drive assembly 9, the drive rod 901 can rotate on the connecting rod 903 through the universal joint 902, which facilitates changing the relative position and angle of the adjusting wheel 905 and improves the adaptability during adjustment.

[0022] According to the above implementation scheme, the angle indicating component 12 includes an inner shaft 1201, a screw 1202, a mounting sleeve 1203, a pointer 1204, and a locking plate 1205. The inner shaft 1201 is fixedly connected to the screw 1202 and is mounted on the upper end of the connecting shaft 6. The mounting sleeve 1203 and the pointer 1204 are fixedly connected and the mounting sleeve 1203 is sleeved on the inner shaft 1201. The locking plate 1205 is connected to the screw 1202.

[0023] When installing the angle indicator component 12, the mounting sleeve 1203 is placed on the inner shaft 1201, and the pointer 1204 precisely corresponds to the corresponding angle on the angle scale line 11. Then, the locking plate 1205 is installed on the screw 1202, and the locking plate 1205 is pressed onto the mounting sleeve 1203 for fixation. During use, as the connecting shaft 6 rotates, the mounting sleeve 1203 rotates the pointer 1204 by the same angle. The rotation angle of the connecting shaft 6 is determined by the rotation angle of the pointer 1204 on the angle scale line 11, thus allowing it to stop at a specific angle, ensuring that the valve plate 2 rotates to the required angle. The structure is simple and the performance is excellent.

[0024] It should be noted that by opening a hexagonal groove 13 at the end of the worm gear 8, and using it in conjunction with the drive assembly 9, the drive assembly 9 can be disassembled and stored when no adjustment is needed, preventing unauthorized personnel from rotating and adjusting the valve plate 2. A universal joint 902 is set between the drive rod 901 and the connecting rod 903, which allows the angle of the adjusting wheel 905 to be changed at any angle, improving the flexibility of operation. An angle scale line 11 is set on the cover plate 10, which is used in conjunction with the angle indicator assembly 12, allowing the adjustment angle of the valve plate 2 to be viewed in real time, enabling precise adjustment of the valve plate 2, improving the adjustment accuracy, and providing high adaptability. The mounting sleeve 1203 is set on the inner shaft 1201, and a locking pressure plate 1205 is installed on the screw 1202, which allows the initial direction of the pointer 1204 to be adjusted, facilitating the calibration work.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A convenient manual valve, comprising a valve body (1) and a connecting shaft (6), wherein a valve plate (2) is provided inside the valve body (1), and a support seat (3) is provided at the upper end of the valve body (1), and a transmission box (4) is provided on the support seat (3), the lower end of the connecting shaft (6) is connected to the valve plate (2), and the upper end of the connecting shaft (6) passes through the support seat (3) and is disposed in the transmission box (4), characterized in that: The transmission box (4) is provided with a supporting sleeve (5), and the transmission box (4) and the supporting sleeve (5) are respectively provided with a worm gear (7) and a worm (8), the end of the worm (8) is connected with a driving assembly (9), the upper end of the transmission box (4) is provided with a cover plate (10), the cover plate (10) is provided with an angle scale line (11), the upper end of the connecting shaft (6) penetrates through the cover plate (10), and the upper end of the connecting shaft (6) is provided with an angle indicating assembly (12).

2. A conveniently operable hand valve as claimed in claim 1, wherein: The valve body (1) is provided with mounting flanges (14) at both ends, and the mounting flanges (14) are provided with mounting holes.

3. A conveniently operable hand valve as claimed in claim 2, wherein: The worm (8) is meshed and connected with the worm gear (7), and the end of the worm (8) is provided with a hexagonal groove (13), and the driving assembly (9) is connected with the worm (8) through the hexagonal groove (13).

4. A conveniently operable hand valve according to claim 3, wherein: The driving assembly (9) comprises a driving rod (901), a universal joint (902), a connecting rod (903), a hexagonal plug (904) and an adjusting wheel (905), the driving rod (901) and the connecting rod (903) are connected through the universal joint (902), the hexagonal plug (904) is installed at the end of the connecting rod (903), and the adjusting wheel (905) is fixed at the end of the driving rod (901).

5. A conveniently operable hand valve according to claim 4, wherein: The angle indicating assembly (12) comprises an inner shaft (1201), a screw rod (1202), a mounting sleeve (1203), a pointer (1204) and a locking pressing plate (1205), the inner shaft (1201) is fixedly connected with the screw rod (1202), the inner shaft (1201) is installed at the upper end of the connecting shaft (6), the mounting sleeve (1203) and the pointer (1204) are fixedly connected, the mounting sleeve (1203) is sleeved on the inner shaft (1201), and the locking pressing plate (1205) is connected on the screw rod (1202).

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