Stop valve convenient for adjusting flow

Abstract

The utility model discloses a stop valve convenient to adjust flow, which comprises a valve shell, a flange plate, a threaded valve rod, a flow adjusting mechanism and a plug, a switch channel is arranged in the valve shell, the threaded valve rod is arranged on the valve shell above the switch channel, the plug is fixed at the bottom of the threaded valve rod, and the plug is in sliding contact with the switch channel. The right half section of the valve shell is provided with a flow adjusting mechanism extending into the valve shell. The valve is convenient to open and close, flow adjustment is convenient, the opening and closing function and the flow adjustment function are separated, and the situation that the service life is shortened due to abrasion caused by frequent use of the valve rod is avoided.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, and in particular to a shut-off valve that facilitates flow adjustment. Background Technology

[0002] A gate valve, also known as a stop valve, is a type of forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. The gate valve's opening and closing element is a plug-shaped valve disc with a flat or conical sealing surface. The valve disc moves linearly along the centerline of the valve seat. The valve stem movement (commonly known as a non-rising stem) can also be a rising and rotating stem type. It can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Therefore, this type of gate valve is ideal for shut-off, regulation, and throttling applications.

[0003] Existing gate valves achieve both on / off and flow regulation functions by adjusting the position of the valve stem. This leads to more frequent use of the valve stem, which is connected to the valve body via threads. Frequent use of the valve stem can easily cause thread wear, reducing its service life. Therefore, there is an urgent need to develop a gate valve that is easy to operate and regulate flow, and separates the on / off and flow regulation functions to prevent wear and tear on the valve stem due to frequent use, thus overcoming the shortcomings in current applications and meeting current needs. Utility Model Content

[0004] The purpose of this invention is to provide a flow control valve that is easy to adjust, so as to solve the problems mentioned in the background art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A flow control valve for easy adjustment includes a valve body, a flange, a threaded valve stem, a flow regulating mechanism, and a plug. The valve body has a switching channel. The threaded valve stem is mounted on the valve body above the switching channel. The plug is fixed to the bottom of the threaded valve stem and slides in contact with the switching channel. The flow regulating mechanism, extending into the right half of the valve body, includes a baffle plate, a rotating shaft, a turntable, a limit pin, a spring, an adapter block, and a limit insertion hole. The baffle plate is disposed inside the valve housing. The baffle plate is rotatably connected to the valve housing via the rotating shaft. The turntable is fixed on the rotating shaft. The adapter block is fixed to the outside of the valve housing. The limiting pin is slidably installed on the turntable and inserted into the adapter block. The adapter block is provided with a plurality of limiting holes for the insertion of the limiting pin. The spring is installed on the outside of the limiting pin. One end of the spring is fixed to the limiting pin, and the other end of the spring is fixed to the turntable.

[0007] Preferably, the included angle between two adjacent limiting holes is 15°.

[0008] Preferably, a flange is fixed on each of the left and right sides of the valve body, and the flange is provided with mounting holes for mounting bolts.

[0009] Preferably, a handle is fixed to the top of the threaded valve stem.

[0010] The beneficial effects of this utility model are as follows: This flow control valve is easy to adjust. In use, the handle is turned by hand to move the threaded valve stem up and down, which in turn moves the plug up and down. When the plug is inserted into the switch channel, water flow is blocked inside the valve body. When the plug is removed from the switch channel, water flow is restored. To adjust the flow rate, first pull the limit pin out of the limit hole. Then, rotate the turntable, which drives the rotating shaft and the baffle plate to rotate, thus adjusting the gap between the baffle plate and the inner wall of the valve body. A larger gap results in a larger flow rate. After adjustment, insert the limit pin back into the limit hole to fix the turntable, rotating shaft, and baffle plate. In summary, this utility model offers convenient switching and flow rate adjustment, and separates the switching and flow rate adjustment functions to prevent wear and tear on the valve stem due to frequent use, thus reducing its service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0013] Figure 3 This is an internal sectional view of the present invention.

[0014] Figure 4 This is a partial structural schematic diagram of the present invention.

[0015] Legend:

[0016] 1. Valve body; 101. Switching channel; 2. Flange; 201. Mounting hole; 3. Threaded valve stem; 301. Handle; 4. Flow regulating mechanism; 401. Baffle plate; 402. Rotating shaft; 403. Turntable; 404. Limit pin; 405. Spring; 406. Adapter block; 407. Limiting socket; 5. Plug. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Specific implementation examples are given below.

[0019] See Figures 1-4In this embodiment of the utility model, a flow-adjustable shut-off valve includes a valve body 1, a flange 2, a threaded valve stem 3, a flow regulating mechanism 4, and a plug 5. A flange 2 is fixed to both the left and right sides of the valve body 1. The flange 2 has mounting holes 201 for mounting bolts. The flange 2 allows the valve body 1 to be connected and fixed to an external pipeline. A switch channel 101 is provided inside the valve body 1. The threaded valve stem 3 is installed above the switch channel 101 on the valve body 1. A handle 301 is fixed to the top of the threaded valve stem 3, and the plug 5 is fixed to the bottom of the threaded valve stem 3. The plug 5 slides in contact with the switch channel 101. The flow regulating mechanism 4, extending into the right half of the valve body 1, is installed. The flow regulating mechanism 4 includes a baffle plate 401 and a rotating shaft 402. The valve housing 1 includes a turntable 403, a limiting pin 404, a spring 405, an adapter block 406, and limiting holes 407. A baffle plate 401 is disposed inside the valve housing 1 and is rotatably connected to the valve housing 1 via a rotating shaft 402. The turntable 403 is fixed on the rotating shaft 402. The adapter block 406 is fixed to the outside of the valve housing 1. The limiting pin 404 is slidably mounted on the turntable 403 and inserted into the adapter block 406. The adapter block 406 has multiple limiting holes 407 for inserting the limiting pin 404. The included angle between two adjacent limiting holes 407 is 15°. A spring 405 is mounted on the outside of the limiting pin 404. One end of the spring 405 is fixed to the limiting pin 404, and the other end is fixed to the turntable 403.

[0020] Working principle: This flow control valve is easy to adjust. When in use, turn the handle 301 by hand to move the threaded valve stem 3 up and down. The threaded valve stem 3 moves the plug 5 up and down. When the plug 5 is inserted into the switch channel 101, the water flow in the valve body 1 is blocked. When the plug 5 is removed from the switch channel 101, the water flow in the valve body 1 is restored. To adjust the flow rate, first pull the limit pin 404 out of the limit hole 407. Then, rotate the turntable 403. The turntable 403 drives the rotating shaft 402 and the baffle plate 401 to rotate, thereby adjusting the gap between the baffle plate 401 and the inner wall of the valve body 1. The larger the gap, the larger the flow rate. After adjustment, insert the limit pin 404 back into the limit hole 407 to fix the turntable 403, the rotating shaft 402, and the baffle plate 401.

[0021] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flow-stop valve that is easy to adjust, characterized in that, The valve body includes a valve housing (1), a flange (2), a threaded valve stem (3), a flow regulating mechanism (4), and a plug (5). A switching channel (101) is provided inside the valve housing (1). The threaded valve stem (3) is installed on the valve housing (1) above the switching channel (101). The plug (5) is fixed to the bottom of the threaded valve stem (3). The plug (5) slides in contact with the switching channel (101). The right half of the valve housing (1) is equipped with the flow regulating mechanism (4) extending into it. The flow regulating mechanism (4) includes: a baffle plate (401), a rotating shaft (402), a turntable (403), a limiting pin (404), a spring (405), an adapter block (406), and a limiting socket (407). The baffle plate (401)... The baffle plate (401) is located inside the valve housing (1). The baffle plate (401) is rotatably connected to the valve housing (1) via the rotating shaft (402). The rotating shaft (402) is fixed with the turntable (403). The adapter block (406) is fixed to the outside of the valve housing (1). The turntable (403) is slidably mounted with the limiting pin (404) inserted into the adapter block (406). The adapter block (406) is provided with a plurality of limiting holes (407) for the insertion of the limiting pin (404). The limiting pin (404) is mounted with the spring (405) on the outside. One end of the spring (405) is fixed to the limiting pin (404), and the other end of the spring (405) is fixed to the turntable (403).

2. The flow control valve according to claim 1, characterized in that, The included angle between two adjacent limiting holes (407) is 15°.

3. The flow control valve according to claim 1, characterized in that, A flange (2) is fixed on both the left and right sides of the valve body (1), and the flange (2) is provided with mounting holes (201) for mounting bolts.

4. The flow control valve according to claim 1, characterized in that, A handle (301) is fixed to the top of the threaded valve stem (3).

Images