A flow-regulating stop valve

Abstract

The utility model relates to the technical field of stop valve, concretely is a kind of stop valve of adjustable flow, including sprocket body, including valve body, valve cover, valve rod and valve core, the both ends of valve body are liquid inlet and liquid outlet, valve cover is located at the top of valve body, the lower end of valve rod is connected with valve core, and the upper side is coaxial with valve cover and is connected by thread, top end is equipped with handle, sleeve is equipped in valve body, valve core is coaxial with sleeve and is located in its inside, valve core is tightly matched with sleeve, and the side of sleeve close to liquid outlet is equipped with liquid discharge port. Its advantages: (1) the flow is adjusted by the cooperation of valve core and sleeve, and the valve rod is coaxially connected with the valve core, avoiding the situation that the control board is stuck;(2) the valve rod is provided above the valve core, and is in a sealed state, avoiding the valve rod from rusting due to water ingress, and improving the service life.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, specifically a shut-off valve with adjustable flow rate. Background Technology

[0002] The opening and closing element of a gate valve is a plug-shaped valve disc. The sealing surface is either flat or conical. The valve disc moves linearly along the center line of the valve seat. The valve stem can also move in a rising and rotating manner. Gate valves can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Gate valves are widely used in industrial fields and pipeline systems, and are commonly found in water supply pipelines, petrochemicals, energy, and other fields.

[0003] For example, patent document CN202323221220.0 discloses an adjustable flow stop valve, comprising a delivery pipe, a bottom frame fixedly connected to the bottom end of the delivery pipe, a flow guide plate fixedly connected inside the bottom frame, a channel groove formed inside the bottom frame, a fixed post fixedly connected to the top center of the delivery pipe, a threaded rod threadedly connected inside the fixed post, a sealing valve plate fixedly connected to the right center of the flow guide plate, a flow guide hole formed on the lower side of the flow guide plate, a flow control component installed inside the delivery pipe, and a collection and filtration component installed inside the bottom frame. This invention enables the stop valve to regulate flow, making it suitable for more demanding industrial environments, improving the applicability and scope of the device, facilitating the cleaning of debris inside the stop valve, and ensuring the purity of the transported liquid to a certain extent.

[0004] However, the above structure has the following problems: First, the control panel is connected to the threaded rod through the connecting block. The mounting frame and the control panel are tightly sealed, resulting in high friction. The threaded rod is prone to jamming. Second, the threaded rod rusts in a humid environment, and the control panel and the threaded rod may rust and become stuck together. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable flow shut-off valve, comprising a valve body 1, a valve cover 13, a valve stem 8, and a valve core 4. The valve body 1 has an inlet 3 and an outlet 16 at both ends. The valve cover 13 is located above the valve body 1. The lower end of the valve stem 8 is connected to the valve core 4, and the upper end is coaxial with the valve cover 13 and connected by a thread 10. A handle 11 is provided at the top. The valve body 1 is characterized in that a sleeve 5 is provided inside, and the valve core 4 is coaxial with the sleeve 5 and located inside it. The valve core 4 and the sleeve 5 are tightly fitted together, and the sleeve 5 has a discharge port 15 on the side near the outlet 16.

[0006] Furthermore, the height of the valve core 4 is higher than the height of the discharge port 15, and a combined sealing ring 6 is provided above the valve core 4 and located at the discharge port 15.

[0007] Furthermore, the bottom end of the sleeve 5 is provided with a sealing step 2 that cooperates with the valve core 4.

[0008] Furthermore, the bottom end of the valve stem 8 is provided with a connecting block 14, and the top end of the valve core 4 is provided with a connecting groove block 7 connected to the valve stem 8.

[0009] Furthermore, the valve cover 13 is provided with packing 9 and sealing ring 12.

[0010] This utility model has the following advantages: First, the flow rate is adjusted by the cooperation of the valve core and the sleeve, and the valve stem is coaxially connected with the valve core, which avoids the control board from getting stuck; Second, the valve stem is located above the valve core and is in a sealed state, which prevents water from entering the valve stem and causing it to rust, thus improving its service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram: 1. Valve body, 2. Sealing step, 3. Liquid inlet, 4. Valve core, 5. Sleeve, 6. Combined sealing ring, 7. Connecting groove block, 8. Valve stem, 9. Packing, 10. Thread, 11. Handle, 12. Sealing ring, 13. Valve cover, 14. Connecting block, 15. Discharge port, 16. Liquid outlet. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1 This utility model provides a technical solution: including a valve body 1, a valve cover 13, a valve stem 8, and a valve core 4. The valve body 1 has an inlet 3 and an outlet 16 at both ends. The valve cover 13 is located above the valve body 1 and contains a packing 9 and a sealing ring 12. The lower end of the valve stem 8 is connected to the valve core 4, and the upper end is coaxial with the valve cover 13 and connected by a thread 10. The top end is provided with a handle 11. The bottom end of the valve stem 8 is provided with a connecting block 14, and the top end of the valve core 4 is provided with a connecting groove block 7 connected to the valve stem 8.

[0015] The valve body 1 is provided with a sleeve 5, and the valve core 4 is coaxial with the sleeve 5 and located inside it. The valve core 4 and the sleeve 5 are tightly fitted. The bottom end of the sleeve 5 is provided with a sealing step 2 that cooperates with the valve core 4. The side of the sleeve 5 near the liquid outlet 16 is provided with a discharge port 15. The height of the valve core 4 is higher than the height of the discharge port 15. A combined sealing ring 6 is provided above the valve core 4 and located at the discharge port 15. By adjusting the height of the valve core 4, the gap between the valve core 4 and the discharge port 15 is made from small to large, thereby adjusting the flow rate.

[0016] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable flow shut-off valve, comprising a valve body (1), a valve cover (13), a valve stem (8), and a valve core (4), wherein the valve body (1) has an inlet (3) and an outlet (16) at both ends, the valve cover (13) is located above the valve body (1), the lower end of the valve stem (8) is connected to the valve core (4), the upper end is coaxial with the valve cover (13) and connected by a thread (10), and a handle (11) is provided at the top, characterized in that: The valve body (1) is provided with a sleeve (5), the valve core (4) is coaxial with the sleeve (5) and is located inside it, the valve core (4) and the sleeve (5) are tightly fitted, and the sleeve (5) is provided with a discharge port (15) on the side near the liquid outlet (16).

2. The adjustable flow shut-off valve according to claim 1, characterized in that: The height of the valve core (4) is higher than the height of the discharge port (15), and a combined sealing ring (6) is provided above the valve core (4) and located at the discharge port (15).

3. The adjustable flow shut-off valve according to claim 1, characterized in that: The bottom end of the sleeve (5) is provided with a sealing step (2) that cooperates with the valve core (4).

4. The adjustable flow shut-off valve according to claim 1, characterized in that: The valve stem (8) is provided with a connecting block (14) at the bottom end, and the valve core (4) is provided with a connecting groove block (7) connected to the valve stem (8) at the top end.

5. The adjustable flow shut-off valve according to claim 1, characterized in that: The valve cover (13) is provided with packing (9) and sealing ring (12).

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