Throttling device convenient to overhaul

Abstract

The throttling device convenient to overhaul comprises a valve body, the left side and the right side of the valve body are provided with two pairs of view windows which are symmetrical left and right, the two pairs of view windows are distributed up and down and located above and below a plugging opening of the valve body respectively, and a round cover is installed at each view window through threads. An axial through hole is formed in the front face of the round cover, tempered glass is installed at the position of the through hole, two vertical plates are installed at the position, close to the edge, of the front face of the round cover, the two vertical plates are distributed in an annular array around the axis of the round cover, the side faces of the two vertical plates are each provided with a round through hole, and the axes of the round through holes of the two vertical plates coincide. According to the throttling device convenient to overhaul, the window is formed in the valve body, the round cover is installed on the valve body, meanwhile, the through hole is formed in the round cover, and the tempered glass is installed on the round cover, so that an overhaul worker can directly observe the condition in the valve body through the tempered glass, and the worker can conveniently find problems in time.

Description

Technical Field

[0001] The utility model relates to the technical field of throttling devices, and particularly relates to a throttling device convenient for maintenance. Background Art

[0002] A throttling device is a device that reduces the cross-section of a channel in a fluid transmission pipeline to reduce the flow rate. For existing throttling devices, such as throttle valves, most of their valve bodies are a whole cast iron piece. When workers perform maintenance, they cannot directly observe the internal situation of the valve body. When foreign objects are stuck in the valve body or there is a lot of scale in the valve body, workers cannot discover it in time. Moreover, during maintenance, it is necessary to open the valve cover on the valve body to clean the foreign objects or scale in the valve body. Usually, multiple bolts are used to connect the valve cover and the valve body, and both installation and disassembly are rather troublesome.

[0003] Therefore, we design a throttling device convenient for maintenance here. Content of the Utility Model

[0004] The purpose of the utility model is to provide a throttling device convenient for maintenance in view of the deficiencies of the prior art, so as to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A throttling device convenient for maintenance, including a valve body. Two pairs of left-right symmetric viewing windows are opened on the left and right sides of the valve body. The two pairs of viewing windows are distributed up and down, and the two pairs of viewing windows are respectively located above and below the plugs of the valve body. A round cover is installed at each viewing window through threads. An axial through hole is opened on the front of the round cover, and tempered glass is installed at the through hole. Two vertical plates are installed near the edge of the front of the round cover. The two vertical plates are annularly arranged with the axis of the round cover. A round through hole is opened on the side surface of each of the two vertical plates, and the axes of the round through holes of the two vertical plates coincide.

[0006] Preferably, a sealing ring is arranged between the round cover and the viewing window of the valve body.

[0007] Preferably, a hydrophobic film is pasted on the back of the tempered glass, and sealant is applied between the tempered glass and the round cover.

[0008] Preferably, the throttling device further includes a steel rod. The length of the steel rod is greater than the diameter of the round cover. The cross-section of the steel rod is circular, and the cross-section radius is slightly smaller than the radius of the round through hole of the vertical plate.

[0009] Preferably, a valve cover is installed on the top of the valve body. A valve rod is slidably installed on the valve cover. A handwheel and a valve flap are respectively installed at the top and bottom of the valve rod. Threads are arranged on the upper part of the valve rod. A nut that is threadedly engaged with the valve rod is sleeved on the valve rod. The nut is fixed to the valve cover through a bracket.

[0010] Preferably, a seal is provided between the valve cover and the valve stem.

[0011] Compared with the prior art, the utility model provides a throttling device convenient for maintenance, which has the following beneficial effects:

[0012] For the throttling device convenient for maintenance, by providing a viewing window on the valve body and installing a round cover, and at the same time opening a through hole on the round cover and installing tempered glass, maintenance workers can directly observe the inside of the valve body through the tempered glass, which is convenient for workers to timely discover problems. During maintenance, by opening the round cover on the viewing window, workers can directly clean foreign objects stuck in the valve body or scale in the valve body, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 is a schematic cross-sectional view of the valve body of the utility model;

[0015] Figure 3 is a schematic cross-sectional view of the round cover of the utility model;

[0016] Figure 4 is a schematic diagram of the disassembly of the round cover of the utility model;

[0017] Figure 5 is a schematic cross-sectional view of the valve cover of the utility model.

[0018] Reference numerals: 1, valve body; 1-1, viewing window; 2, round cover; 3, vertical plate; ३-१, round through hole; 4, tempered glass; 5, sealing ring; 6, hydrophobic film; 7, steel rod; 8, valve cover; 9, valve stem; 10, handwheel; 11, valve flap; 12, nut; 13, seal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 - 5, in this embodiment: A throttling device convenient for maintenance includes a valve body 1. On the left and right sides of the valve body 1, there are two pairs of left-right symmetrical viewing windows 1-1. The two pairs of viewing windows 1-1 are distributed vertically, and the two pairs of viewing windows 1-1 are respectively located above and below the plug of the valve body 1. At each viewing window 1-1, a round cover 2 is installed by threading. A sealing ring 5 is arranged between the round cover 2 and the viewing window 1-1 of the valve body 1. An axial through hole is opened on the front surface of the round cover 2, and a tempered glass 4 is installed at this through hole. When maintaining the throttling device, workers can directly observe the situation inside the valve body 1 through the tempered glass 4. If there are foreign objects stuck or too much scale in the valve body, after removing the round cover 2 on the viewing window 1-1, the foreign objects or scale inside the valve body 1 can be cleaned. A hydrophobic film 6 is pasted on the back surface of the tempered glass 4, and the water passing through the valve body 1 is not easily attached to the tempered glass 4. A sealant is applied between the tempered glass 4 and the round cover 2.

[0021] Two vertical plates 3 are installed near the edge of the front surface of the round cover 2. The two vertical plates 3 are distributed in a circular array with the axis of the round cover 2. A round through hole 3-1 is opened on the side surface of each of the two vertical plates 3, and the axes of the round through holes 3-1 of the two vertical plates 3 coincide. The throttling device further includes a steel rod 7. The length of the steel rod 7 is greater than the diameter of the round cover 2. The cross-section of the steel rod 7 is circular, and the cross-section radius is slightly smaller than the radius of the round through hole 3-1 of the vertical plate 3. The steel rod 7 can pass through the round through holes 3-1 of the two vertical plates 3 on the round cover 2 at the same time, and then by rotating the steel rod 7, the round cover 2 can be driven to rotate, so as to facilitate workers to disassemble or install the round cover 2 on the viewing window 1-1.

[0022] A valve cover 8 is installed on the top of the valve body 1. A valve rod 9 is slidably installed on the valve cover 8. A handwheel 10 and a valve flap 11 are respectively installed at the top and bottom of the valve rod 9. Threads are provided on the upper part of the valve rod 9, and a nut 12 that is threadedly matched with the valve rod 9 is sleeved on the valve rod 9. The nut 12 is fixed to the valve cover 8 through a bracket. A sealing member 13 is arranged between the valve cover 8 and the valve rod 9. By rotating the handwheel 10, the valve rod 9 can be driven to rotate, and then through the cooperation of the threads on the valve rod 9 and the nut 12, the valve rod 9 can be controlled to drive the valve flap 11 to move up and down. The valve flap 11 is a conical valve flap. When the valve flap 11 moves down to the bottom, it can block the plug of the valve body 1. At this time, water cannot pass through the valve body. When the valve flap 11 moves up, the gap between the plug of the valve body 1 and the valve flap 11 will gradually expand. By controlling the size of the gap between the plug of the valve body 1 and the valve flap 11, the throttling effect can be achieved.

[0023] Working principle and usage process of the present utility model: During the use of the throttling device that is convenient for maintenance, when performing maintenance, workers can directly observe the situation inside the valve body 1 through the toughened glass 4. If it is observed that there are foreign objects stuck or too much scale inside the valve body 1, the steel rod 7 is simultaneously passed through the circular through holes 3-1 of the two vertical plates 3 on the round cover 2, and then the steel rod 7 is rotated. By driving the round cover 2 to rotate through the steel rod 7, the round cover 2 is detached from the viewing window 1-1 of the valve body 1, and then the foreign objects or scale inside the valve body 1 can be easily cleaned. After the maintenance is completed, the round cover 2 can be reinstalled on the viewing window 1-1 using the steel rod 7. The operation is simple and convenient.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A throttling device convenient for maintenance, comprising a valve body (1), characterized in that: On the left and right sides of the valve body (1), there are two pairs of left - right symmetric viewing windows (1 - 1). The two pairs of viewing windows (1 - 1) are distributed vertically, and the two pairs of viewing windows (1 - 1) are respectively located above and below the plug of the valve body (1). At each viewing window (1 - 1), a round cover (2) is installed by threading. A through - hole in the axial direction is opened on the front of the round cover (2), and tempered glass (4) is installed at this through - hole. Two vertical plates (3) are installed near the edge of the front of the round cover (2). The two vertical plates (3) are distributed in a circular array with the axis of the round cover (2). A round through - hole (3 - 1) is opened on the side of each of the two vertical plates (3), and the axes of the round through - holes (3 - 1) of the two vertical plates (3) coincide.

2. The throttling device convenient for maintenance according to claim 1, wherein: A sealing ring (5) is arranged between the round cover (2) and the viewing window (1 - 1) of the valve body (1).

3. The throttling device convenient for maintenance according to claim 1, wherein: A hydrophobic film (6) is pasted on the back of the tempered glass (4), and sealant is applied between the tempered glass (4) and the round cover (2).

4. The throttling device convenient for maintenance according to claim 1, characterized in that: The throttling device further includes a steel rod (7). The length of the steel rod (7) is greater than the diameter of the round cover (2). The cross - section of the steel rod (7) is circular, and the cross - section radius is slightly smaller than the radius of the round through - hole (3 - 1) of the vertical plate (3).

5. The throttling device convenient for maintenance according to claim 1, characterized in that: A valve cover (8) is installed on the top of the valve body (1). A valve rod (9) is slidably installed on the valve cover (8). A handwheel (10) and a valve flap (11) are respectively installed at the top and bottom of the valve rod (9). Threads are provided on the upper part of the valve rod (9). A nut (12) that is thread - fitted with the valve rod (9) is sleeved on the valve rod (9). The nut (12) is fixed to the valve cover (8) through a bracket.

6. The throttling device convenient for maintenance according to claim 5, characterized in that: A sealing member (13) is arranged between the valve cover (8) and the valve rod (9).

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