Throttle valve with flow pointer

Abstract

The utility model belongs to the field of throttle valves, and particularly relates to a throttle valve with a flow pointer. According to the technology, a throttle valve body is included, a fixing pipe is arranged on the outer side of a hand wheel located at the top of the throttle valve in a sleeving mode, a fixing plate in threaded fit with the fixing pipe is horizontally arranged in the fixing pipe, a first channel for a throttle valve rod to pass through is formed in the circle center of the fixing plate, the outer side wall of the throttle valve rod is fixed to the fixing plate, and a groove body with an upward notch is fixed to the top of the fixing pipe; a second channel for the throttling valve rod to pass through is formed in the groove bottom of the groove body, and a pointer is horizontally fixed to the portion, located in the groove body, of the throttling valve rod. Due to the arrangement of the fixing pipe, the throttling valve can be conveniently and additionally arranged on an existing throttling valve, so that the cost of overall replacement is avoided, and due to the arrangement of the fixing plate and the pointer, the change amplitude of a throttling opening can be conveniently displayed in real time, an operator can clearly know the current flow, and then control is more accurate.

Description

Technical Field

[0001] This utility model belongs to the field of throttle valves, and in particular relates to a throttle valve with a flow rate indicator. Background Technology

[0002] A throttle valve is a valve that controls fluid flow by changing the throttling cross-section or throttling length. Throttling valves can be classified into two types according to their channel configuration: straight-through and angle; and into three types according to the shape of their opening and closing elements: needle-type, groove-type, and window-type. Because the flow rate of a throttle valve depends not only on the size of the throttling orifice area but also on the pressure difference before and after the orifice, and because the valve has low stiffness, it is only suitable for applications where the load on the actuator changes very little and speed stability requirements are not high.

[0003] Existing throttle valves make it inconvenient to determine the size of the throttle orifice during use, and it is not possible to intuitively understand the flow rate of the throttle valve in actual use, thus affecting the throttle valve's control over the flow rate. Utility Model Content

[0004] The purpose of this invention is to provide a throttle valve with a flow rate indicator, which makes it easy to intuitively display the flow rate of the throttle valve.

[0005] The throttle valve with flow pointer includes a throttle valve body, a fixing tube fitted on the outside of the handwheel at the top of the throttle valve, a fixing plate horizontally threaded inside the fixing tube, a first channel for the throttle valve rod to pass through the center of the fixing plate, the outer wall of the throttle valve rod being fixed to the fixing plate, a groove with its opening facing upwards fixed at the top of the fixing tube, a second channel for the throttle valve rod to pass through the bottom of the groove, and a pointer horizontally fixed on the throttle valve rod located inside the groove.

[0006] Furthermore, a fixing ring is horizontally fixed to the top of the groove, and the fixing ring is provided with scale lines for displaying the rotation angle of the pointer, and the length of the long side of the pointer is less than the radius of the fixing ring.

[0007] Furthermore, the fixing tube is made of transparent material, and a scale for displaying the lifting range of the fixing plate is vertically installed on the outer wall of the fixing tube.

[0008] Furthermore, the fixed tube is threaded to the outer wall of the throttle valve body, and the outer wall of the fixed tube has a threaded through hole that communicates with the left and right sides, and a limiting rod that is threaded to it is installed in the threaded through hole.

[0009] Furthermore, the limiting rod is provided with a limiting block that is threadedly engaged with it.

[0010] Furthermore, a technical solution is provided as a throttle valve with a flow pointer, including a throttle valve body, a fixing tube fitted on the outside of the handwheel located at the top of the throttle valve, a fixing plate horizontally arranged inside the fixing tube and threaded therewith, a first channel for the throttle valve rod to pass through the center of the fixing plate, the outer wall of the throttle valve rod being fixed to the fixing plate, an arrow being provided on the top surface of the fixing plate, a scale for displaying the lifting and lowering range being provided on the outer wall of the fixing tube, a fixing ring being horizontally arranged at the top of the fixing tube, and a scale line for displaying the angle being provided on the fixing ring.

[0011] Furthermore, the fixing ring and the fixing tube are detachably connected.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention facilitates installation on existing throttle valves by using a fixed tube, thus avoiding the cost of replacing the entire valve. Furthermore, the fixed plate and pointer allow for real-time display of the throttle orifice's variation, enabling operators to clearly understand the current flow rate and thus control it more accurately. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 for Figure 1 The front view;

[0017] Figure 4 This is a schematic diagram of the structure of Example 2;

[0018] Figure 5 for Figure 4 Top view;

[0019] The components in the diagram are named as follows: 1. Fixing tube; 2. Fixing plate; 3. Groove; 4. Pointer; 5. Fixing ring; 6. Limiting block; 7. Limiting rod; 8. Scale. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0021] This embodiment describes a throttle valve with a flow rate indicator, such as... Figure 1As shown, the device includes a throttle valve body, and a fixing tube 1 is fitted on the outside of the handwheel located at the top of the throttle valve, which facilitates installation on existing throttle valves and reduces replacement costs.

[0022] The throttle valve body is existing technology and typically consists of a handwheel, throttle valve stem, valve head, quick connector, sealing ring, and multi-section valve body;

[0023] A fixed plate 2 is horizontally installed inside the fixed tube 1 and is threaded to it. A first channel for the throttle valve rod to pass through is opened at the center of the fixed plate 2. The outer wall of the throttle valve rod is fixed to the fixed plate 2, so that the throttle valve rod can be rotated by turning the handwheel and the fixed plate 2 can be rotated at the same time, so that the fixed plate 2 and the throttle valve rod are raised to the same height, thereby displaying the rise and fall of the valve head in real time through the fixed plate 2.

[0024] The top of the fixed pipe 1 is fixed with a groove 3 facing upwards. The bottom of the groove 3 is provided with a second channel for the passage of the throttle valve rod. A pointer 4 is horizontally fixed on the throttle valve rod located in the groove 3, so that the rotation angle of the handwheel can be displayed in real time by the pointer 4, and a more accurate flow rate can be obtained by combining the rotation angle and the lifting amplitude.

[0025] like Figure 1 and Figure 2 As shown, a fixing ring 5 is horizontally fixed at the top of the groove 3. The fixing ring 5 is provided with a scale line for displaying the rotation angle of the pointer 4. The length of the long side of the pointer 4 is less than the radius of the fixing ring 5, which makes it easy to display the rotation amplitude in real time when the handwheel is turned, and at the same time avoids the pointer 4 being blocked when the valve stem rises too much.

[0026] The fixing tube 1 and fixing ring 5 are made of transparent materials, such as plastic and glass.

[0027] like Figure 3 As shown, the fixing tube 1 is made of transparent material, and a scale 8 is vertically set on the outer wall of the fixing tube 1 to display the lifting range of the fixing plate 2, so as to intuitively display the lifting range of the fixing plate 2, and thus simultaneously know the lifting range of the valve head.

[0028] The fixed tube 1 is threadedly engaged with the outer wall of the throttle valve body, and the outer wall of the fixed tube 1 has a threaded through hole that communicates with the left and right sides. A limiting rod 7 that is threadedly engaged with the threaded through hole is installed in the threaded through hole, so as to limit the fixed tube 1 by means of the limiting rod 7, and avoid the fixed tube 1 from being displaced during the rotation of the handwheel, which would affect the accuracy of the displayed data.

[0029] The limiting rod 7 is provided with a limiting block 6 that is threaded to it, which facilitates further improvement of the fixing effect. In use, the limiting rod 7 is first fixed by pressing against the side wall of the valve stem, and then the limiting block 6 is rotated to fit tightly against the outer side wall of the fixing tube 1 to form a further fixation. The threads of the limiting block 6 and the limiting rod 7 are opposite to those of the limiting rod 7, thereby preventing the limiting rod 7 from slipping off the fixing tube 1 during use. In use, a rubber ring can also be set between the limiting block 6 and the fixing tube 1 to increase friction. Example

[0030] This embodiment further illustrates the technology and provides a technical solution as a throttle valve with a flow rate indicator, such as... Figure 4 and Figure 5 As shown, the device includes a throttle valve body. A fixing tube 1 is fitted around the handwheel at the top of the throttle valve. A fixing plate 2, threaded to the fixing tube 1, is horizontally installed inside the fixing tube 1. A first channel for the throttle valve stem to pass through is opened at the center of the fixing plate 2. The outer wall of the throttle valve stem is fixed to the fixing plate 2. An arrow is provided on the top surface of the fixing plate 2. A scale 8 for displaying the lifting and lowering amplitude is provided on the outer wall of the fixing tube 1. A fixing ring 5 is horizontally installed at the top of the fixing tube 1. The fixing ring 5 is provided with scale lines for displaying the angle. This allows for the simultaneous display of the lifting and lowering amplitude and the rotation amplitude directly through the fixing plate 2, making the structure simpler and the data observation more intuitive, and improving the accuracy of data recording to a certain extent.

[0031] The fixing ring 5 is detachably connected to the fixing tube 1, which helps to prevent the fixing ring 5 from affecting the upward rotation of the fixing plate 2, so that the fixing plate 2 can be directly removed from the fixing tube 1, making it more convenient for maintenance and replacement.

[0032] The fixing ring 5 and the fixing tube 1 can be interference-fitted. During manufacturing, an annular groove with interference fit to the fixing ring 5 can be opened at the top of the fixing tube 1. The fixing ring 5 can also be threaded with the inner wall of the fixing tube 1 for easy disassembly.

[0033] The working principle is as follows: First, the fixing tube 1 is fitted onto the outside of the valve stem. Then, the fixing plate 2 is fixed onto the valve stem area located on the outside of the valve body. Before fixing the fixing plate 2, the position of the valve stem after installation is measured in advance so that the fixing plate 2 is close to or fits against the top surface of the valve body after the valve stem is installed. Then, the fixing tube 1 is installed on the top of the valve body and fixed by the limiting block 6 and the limiting rod 7. When in use, the fixing plate 2 and the pointer 4 rotate simultaneously when the handwheel of the rotating head is adjusted to adjust the size of the throttle orifice. The position of the fixing plate 2 and the pointer 4 is used to display the lifting amplitude and rotation angle in real time.

Claims

1. A throttle valve with a flow rate indicator, comprising a throttle valve body, wherein a fixing tube (1) is fitted around the handwheel located at the top of the throttle valve, characterized in that: The fixed tube (1) is horizontally provided with a fixed plate (2) that is threaded to it. The fixed plate (2) has a first channel for the throttle valve rod to pass through at its center. The outer wall of the throttle valve rod is fixed to the fixed plate (2). The top of the fixed tube (1) is fixed with a groove (3) facing upward. The bottom of the groove (3) has a second channel for the throttle valve rod to pass through. A pointer (4) is horizontally fixed on the throttle valve rod located in the groove (3).

2. The throttle valve with flow rate indicator according to claim 1, characterized in that: The top of the groove (3) is horizontally fixed with a fixing ring (5), and the fixing ring (5) is provided with a scale line for displaying the rotation angle of the pointer (4), and the length of the long side of the pointer (4) is less than the radius of the fixing ring (5).

3. The throttle valve with flow rate indicator according to claim 2, characterized in that: The fixing tube (1) is made of transparent material, and a scale (8) for displaying the lifting range of the fixing plate (2) is vertically set on the outer wall of the fixing tube (1).

4. The throttle valve with flow rate indicator according to claim 3, characterized in that: The fixed tube (1) is threaded to the outer wall of the throttle valve body, and the outer wall of the fixed tube (1) is provided with a threaded through hole that is connected to the left and right. A limiting rod (7) that is threaded to it is installed in the threaded through hole.

5. The throttle valve with flow rate indicator according to claim 4, characterized in that: The limiting rod (7) is provided with a limiting block (6) that is threadedly engaged with it.

6. A throttle valve with a flow rate indicator, comprising a throttle valve body, wherein a fixing tube (1) is fitted around the handwheel located at the top of the throttle valve, characterized in that: The fixed tube (1) is horizontally provided with a fixed plate (2) that is threaded to it. The fixed plate (2) has a first channel for the throttle valve rod to pass through at its center. The outer wall of the throttle valve rod is fixed to the fixed plate (2). An arrow is provided on the top surface of the fixed plate (2). A scale (8) for displaying the lifting range is provided on the outer wall of the fixed tube (1). A fixed ring (5) is horizontally provided on the top of the fixed tube (1). A scale line for displaying the angle is provided on the fixed ring (5).

7. The throttle valve with flow rate indicator according to claim 6, characterized in that: The fixing ring (5) is detachably connected to the fixing tube (1).

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