Non-rising stem stop valve

Abstract

The utility model discloses a non-rising stem stop valve, which relates to the technical field of stop valves and comprises a valve body, a sealing cover plate is mounted at the top of the valve body, a valve rod is mounted on the inner wall of the sealing cover plate, a valve clack is mounted at the bottom of the valve rod, a rotating rod is mounted at the top of the valve rod, and a clamping block is mounted on the side wall of the rotating rod. An extension rod is installed on the outer wall of the rotating rod, a sliding groove is formed in the side wall of the extension rod, a fixing shaft penetrates through the interior of the extension rod, a valve pipe is installed on the side wall of the valve body, and a filter screen is installed on the inner wall of the valve pipe. Through the arrangement of the valve pipe, the filter screen, the limiting spring and the limiting ejector rod, the limiting ejector rod is pressed, then the filter screen is inserted into a proper position in the valve pipe, and at the moment, the limiting ejector rod is ejected out through the elastic force of the limiting spring, so that the limiting ejector rod and the filter screen are clamped and fixed, and disassembly and assembly are convenient; and solid impurities in the fluid medium can be filtered through the filter screen, and blockage in the valve pipe is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve, concretely is a kind of stem stop valve. BACKGROUND

[0002] In the early stage of industrial development, simple valves such as gate valves, ball valves and the like have been able to meet some basic fluid control requirements, however, with the refinement and complication of industrial production, the demand for a valve capable of accurately controlling flow and having a compact structure has been increasing, although the traditional stem stop valve can control flow, its valve stem extension part will be raised and lowered with the opening and closing of the valve, which may cause inconvenience in some space-limited occasions, such as the pipe system of a ship or the dense pipe layout of an underground pipe gallery, and may even be damaged due to the collision of the valve stem, in this case, the stem stop valve comes into being, the valve stem thread of which is inside the valve body, and the valve stem has no axial displacement during opening and closing, so the overall structure is more compact and more suitable for installation in a limited space, but the existing stem stop valve is difficult to rotate due to rusting of the valve stem and the valve body in a humid environment or rain erosion, the opening and closing of the valve are restricted, and the transported fluid may contain impurities, which may cause blockage or damage to the internal pipe of the valve body after long-term accumulation, to solve the above problems, therefore, a stem stop valve is needed.

[0003] The existing stem stop valve is inconvenient to control opening and closing and cannot filter the internal fluid when the valve stem and the valve body are rusted during operation, therefore, a stem stop valve is urgently needed. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a stem stop valve to solve the problems of inconvenient control of opening and closing and inability to filter the internal fluid of the existing stem stop valve when the valve stem and the valve body are rusted during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a stem stop valve, comprising a valve body, a sealing cover plate is installed on the top of the valve body, a valve stem is installed on the inner wall of the sealing cover plate, a valve flap is installed on the bottom of the valve stem, a rotating rod is installed on the top of the valve stem, a clamping block is installed on the side wall of the rotating rod, an extension rod is installed on the outer wall of the rotating rod, a sliding groove is formed in the side wall of the extension rod, a fixed shaft penetrates the inside of the extension rod, a valve pipe is installed on the side wall of the valve body, a filter screen is installed on the inner wall of the valve pipe, a limiting spring is installed on the inner wall of the valve pipe, and a limiting top rod is installed on the outer wall of the limiting spring.

[0006] Preferably, the valve body and the sealing cover plate are flange-connected, and the valve stem and the valve flap are threadedly connected.

[0007] Preferably, the rotating rod is symmetrically arranged with the middle axis of the sealing cover plate as the center, and the extension rod is movably connected with the rotating rod.

[0008] Preferably, the clamping block is clampedly connected with the sliding groove, and the fixing shaft is threadedly connected with the rotating rod and penetrates through the inside of the extension rod.

[0009] Preferably, the limiting top rod and the valve pipe form a telescopic structure through the limiting spring, and the limiting top rod is symmetrically arranged with the middle axis of the valve pipe as the center.

[0010] Preferably, the limiting top rod is clampedly connected with the filter screen, and the filter screen is inserted with the valve pipe.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、 the utility model discloses a valve handle extension rod structure, which comprises a valve body, a sealing cover plate, a valve rod, a valve clack, a rotating rod, a clamping block, an extension rod, a sliding groove and a fixing shaft.

[0013] 2、 the utility model discloses a valve handle extension rod structure, which comprises a valve body, a sealing cover plate, a valve rod, a valve clack, a rotating rod, a clamping block, an extension rod, a sliding groove and a fixing shaft. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model's front appearance.

[0015] Figure 2 It is the structure schematic diagram of the utility model's inside section.

[0016] Figure 3 It is the structure schematic diagram of the utility model's rotating rod surrounding assembly split display.

[0017] Figure 4 It is the structure schematic diagram of the utility model's valve pipe inside section.

[0018] In the drawing: 1, valve body;2, sealing cover plate;3, valve rod;4, valve clack;5, rotating rod;6, clamping block;7, extension rod;8, sliding groove;9, fixing shaft;10, valve pipe;11, filter screen;12, limiting spring;13, limiting top rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.

[0020] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0021] Please refer to Figures 1-4 A kind of stop valve of hidden rod, including valve body 1, the top of valve body 1 is equipped with sealing cover plate 2, the inner wall of sealing cover plate 2 is equipped with valve stem 3, the bottom of valve stem 3 is equipped with valve clack 4, the top of valve stem 3 is equipped with rotating rod 5, the lateral wall of rotating rod 5 is equipped with clamping block 6, the outer wall of rotating rod 5 is equipped with extension rod 7, sliding slot 8 is set in the lateral wall of extension rod 7, fixed shaft 9 penetrates the inside of extension rod 7, valve body 1 and sealing cover plate 2 flange connection, valve stem 3 and valve clack 4 are threadedly connected, rotating rod 5 is symmetrically arranged with the center axis of sealing cover plate 2, and extension rod 7 and rotating rod 5 are movably connected, clamping block 6 and sliding slot 8 are engagedly connected, fixed shaft 9 penetrates the inside of extension rod 7 and is threadedly connected with rotating rod 5, by the rotating rod 5, clamping block 6, extension rod 7, sliding slot 8 and fixed shaft 9 arranged, when using, rotating fixed shaft 9, make extension rod 7 and rotating rod 5 remove the locking state, then again extension rod 7 is stretched outward, the overall length of rotating rod 5 is extended, and the force arm is increased, so that it is more labor-saving and efficient in the valve opening and closing operation process.

[0022] Please refer to Figures 1-4 A kind of stop valve of hidden rod, the lateral wall of valve body 1 is equipped with valve pipe 10, the inner wall of valve pipe 10 is equipped with filter screen 11, the inner wall of valve pipe 10 is equipped with limit spring 12, the outer wall of limit spring 12 is equipped with limit top rod 13, limit top rod 13 and valve pipe 10 constitute telescopic structure by limit spring 12, and limit top rod 13 is symmetrically arranged with the center axis of valve pipe 10, limit top rod 13 and filter screen 11 are engagedly connected, and filter screen 11 is inserted with valve pipe 10, by the valve pipe 10, filter screen 11, limit spring 12 and limit top rod 13 arranged, limit top rod 13 is pressed, then filter screen 11 is inserted into valve pipe 10 in suitable position, limit top rod 13 is ejected by the elastic force of limit spring 12 at this time, so that limit top rod 13 and filter screen 11 are fixed by clamping, and it is convenient to disassemble and assemble, and the setting of filter screen 11 can filter solid impurities in fluid medium, to avoid the blockage in valve pipe 10.

[0023] Working principle: in use, first of all, the device is moved to the required position, then press the limit top rod 13, then the filter screen 11 is inserted into the valve pipe 10 in the appropriate position, at this time the limit top rod 13 is pushed out by the elastic force of the limit spring 12, so that the limit top rod 13 is clamped and fixed with the filter screen 11, convenient to disassemble and assemble, and the filter screen 11 can filter the solid impurities in the fluid medium, avoiding the blockage in the valve pipe 10, then rotate the fixed shaft 9, so that the extension rod 7 and the rotating rod 5 are unlocked, then the extension rod 7 is stretched outward, the overall length of the extension rod 5 is increased, the force arm is increased, so that it is more labor-saving and efficient during the valve opening and closing operation, finally, the rotating rod 5 drives the valve rod 3 and the valve flap 4 to adjust the thread, controls the opening and closing of the valve body 1, so that the use process of the device is completed, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0024] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A gate valve comprising a valve body (1), characterized in that: The top of the valve body (1) is provided with a sealing cover plate (2), the inner wall of the sealing cover plate (2) is provided with a valve rod (3), the bottom of the valve rod (3) is provided with a valve clack (4), the top of the valve rod (3) is provided with a rotating rod (5), the side wall of the rotating rod (5) is provided with a clamping block (6), the outer wall of the rotating rod (5) is provided with an extension rod (7), the side wall of the extension rod (7) is provided with a sliding groove (8), a fixed shaft (9) penetrates through the inside of the extension rod (7), the side wall of the valve body (1) is provided with a valve pipe (10), the inner wall of the valve pipe (10) is provided with a filter screen (11), the inner wall of the valve pipe (10) is provided with a limiting spring (12), the outer wall of the limiting spring (12) is provided with a limiting top rod (13).

2. A gate valve according to claim 1, wherein: The valve body (1) is connected with the sealing cover plate (2) through flange, and the valve rod (3) is connected with the valve clack (4) through thread.

3. A gate valve according to claim 1, wherein: The rotating rod (5) is symmetrically arranged with the center axis of the sealing cover plate (2) as the center, and the extension rod (7) is movably connected with the rotating rod (5).

4. A gate valve according to claim 1, wherein: The clamping block (6) is connected with the sliding groove (8), and the fixed shaft (9) penetrates through the inside of the extension rod (7) and is connected with the rotating rod (5) through thread.

5. A gate valve according to claim 1, wherein: The limiting top rod (13) and the valve pipe (10) constitute a telescopic structure through the limiting spring (12), and the limiting top rod (13) is symmetrically arranged with the center axis of the valve pipe (10) as the center.

6. A gate valve according to claim 1, wherein: The limiting top rod (13) is connected with the filter screen (11) through clamping, and the filter screen (11) is inserted into the valve pipe (10).

Images