Spring pointer type flow control valve

Abstract

The utility model discloses a spring pointer type flow control valve relates to control valve technical field, including valve body and valve cover, be connected with valve shaft on the valve cover, still include dial and spring pointer, the dial cover is located valve shaft outside and is fixed in the valve cover inner bottom, one end of spring pointer is the installation end for installing on valve shaft, the other end is the indication end for indicating the scale value on dial to show current flow. The spring pointer type flow control valve provided by the utility model integrates flow regulation and flow indication, and the structure is simple, and the installation and maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and in particular to a spring pointer type flow control valve. Background Technology

[0002] A flow control valve has a valve cover mounted on its body, and a valve shaft mounted on the valve cover. Adjusting the valve shaft controls the valve opening, thus regulating the flow rate. Existing flow control valves typically include a flow indicator to monitor the liquid flow rate in real time. For example, patent CN 219624838 U discloses a self-operated flow control valve flow indicator, which allows the flow rate at the current valve position to be determined by observing the flow indicator. However, displaying the current flow rate via a flow indicator requires an additional flow indicator to be installed on the pipeline, undoubtedly increasing installation costs. Furthermore, long-term use necessitates maintenance of the flow indicator, further increasing maintenance costs. Utility Model Content

[0003] The purpose of this invention is to provide a spring pointer type flow control valve to solve the problems existing in the prior art, integrating flow regulation and flow indication into one unit, with a simple structure and reduced installation and maintenance costs.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a spring pointer type flow control valve, including a valve body and a valve cover. A valve shaft is connected to the valve cover. The valve cover also includes a scale and a spring pointer. The scale is sleeved on the valve shaft and fixed to the inner bottom surface of the valve cover. One end of the spring pointer is a mounting end for mounting on the valve shaft, and the other end is an indicating end for pointing to the scale value on the scale to indicate the current flow rate.

[0005] Preferably, the valve shaft has an annular groove at its end, and the bottom of the annular groove has two insertion holes. The mounting end includes two insertion rods and two arc-shaped rods. The insertion rods and the arc-shaped rods are connected in a one-to-one correspondence. One end of each of the two insertion rods is inserted into the two insertion holes, and the other end is connected to one end of the corresponding arc-shaped rod. The other ends of the two arc-shaped rods are connected to the indicator end, and the two arc-shaped rods are engaged in the annular groove.

[0006] Preferably, the indicator end includes a V-shaped indicator rod, and the two ends of the opening of the V-shaped indicator rod are respectively connected to the ends of the two arc-shaped rods away from the plug rod.

[0007] Preferably, the two insertion holes are spaced 180° apart.

[0008] Preferably, it further includes a locking cover, which is used to be installed on the open end of the valve cover and cover the valve shaft.

[0009] Preferably, the spring pointer is a wire pointer structure.

[0010] Preferably, the end face of the valve shaft is provided with a waist-shaped groove.

[0011] Preferably, the dial is fixed to the inner bottom surface of the valve cover.

[0012] The present invention achieves the following technical advantages over the prior art: This utility model provides a spring pointer type flow control valve, in which a spring pointer is installed on the valve shaft. When the valve flow is adjusted by rotating the valve shaft, the spring pointer rotates with the rotation of the valve shaft. The spring pointer works in conjunction with the scale, so that the scale value on the scale indicated by the spring pointer indicates the current flow of the valve. The flow adjustment and flow indication are integrated into one, the structure is simple, and the installation and maintenance costs are reduced. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the spring pointer type flow control valve in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the valve shaft structure in an embodiment of this utility model; Figure 3 This is a partial cross-sectional view of the valve shaft in an embodiment of the present utility model; Figure 4 This is a schematic diagram showing the connection relationship between the spring pointer and the valve shaft in an embodiment of this utility model.

[0015] In the diagram: 1-valve body, 2-valve cover, 3-valve shaft, 31-annular groove, 32-insertion hole, 33-waist-shaped groove, 4-dimension, 5-spring pointer, 51-mounting end, 511-insertion rod, 512-arc rod, 52-indicating end, 521-V-shaped indicator rod, 6-locking cover. Detailed Implementation

[0016] 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.

[0017] The purpose of this invention is to provide a spring pointer type flow control valve to solve the problems existing in the prior art, integrating flow regulation and flow indication into one unit, with a simple structure and reduced installation and maintenance costs.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1-4 As shown, this embodiment provides a spring pointer type flow control valve, including a valve body 1 and a valve cover 2. A valve shaft 3 is connected to the valve cover 2. It also includes a scale 4 and a spring pointer 5. The scale 4 is sleeved on the valve shaft 3 and fixed to the inner bottom surface of the valve cover 2. One end of the spring pointer 5 is a mounting end 51, which is used to install on the valve shaft 3, and the other end is an indicating end 52, which is used to point to the scale value on the scale 4 to indicate the current flow rate.

[0020] The spring pointer 5 is mounted on the valve shaft 3 via the mounting end 51, and the indicator end 52 points to the scale value on the dial 4, which indicates the current valve flow rate. When the valve shaft 3 is rotated to adjust the valve flow rate, the spring pointer 5 rotates along with the valve shaft 3. The valve opening can be adjusted according to the flow rate value indicated by the spring pointer 5, thereby achieving flow rate regulation. This integrates flow rate regulation and flow rate indication into one unit, resulting in a simple structure and reduced installation and maintenance costs.

[0021] In this embodiment, the end of the valve shaft 3 is provided with an annular groove 31, and the bottom of the annular groove 31 is provided with two insertion holes 32. The mounting end 51 includes two insertion rods 511 and two arc-shaped rods 512. The insertion rods 511 and the arc-shaped rods 512 are connected one-to-one. One end of each insertion rod 511 is inserted into the two insertion holes 32, and the other end is connected to one end of the corresponding arc-shaped rod 512. The other ends of the two arc-shaped rods 512 are connected to the indicating end 52, and the two arc-shaped rods 512 are engaged in the annular groove 31. When installing the spring pointer 5, the two insertion rods 511 are inserted into the corresponding insertion holes 32, and the two arc-shaped rods 512 are engaged in the annular groove 31, making disassembly and assembly convenient and quick.

[0022] In this embodiment, the indicating end 52 includes a V-shaped indicating rod 521, with its two open ends connected to the ends of two arc-shaped rods 512 away from the insertion rods 511. By setting the V-shaped indicating rod 521, the two arc-shaped rods 512 can press inward against the annular groove 31, making the connection between the spring pointer 5 and the valve shaft 3 more stable. Because the spring pointer 5 is elastic, and the two insertion rods 511 are of suitable length, they can be separated by a certain distance within their elastic limit range, allowing for convenient installation within the two insertion holes 32 of the valve shaft 3, and achieving reliable clamping between the spring pointer 5 and the valve shaft 3 under the action of elastic force. When the valve shaft 3 rotates, the spring pointer 5 and the valve shaft 3 do not produce circumferential relative displacement, thus ensuring the accuracy of the scale indication. Simultaneously, the spring pointer 5 is easy to disassemble, facilitating valve maintenance. The annular groove 31 prevents the spring pointer 5 from rotating upwards 180° around the two insertion holes 32 of the valve shaft 3 to the opposite direction, avoiding scale indication errors. The spring pointer 5 can rotate within a small range around the two insertion holes 32 of the valve shaft 3 to accommodate the up-and-down movement of the valve shaft 3 when adjusting the valve opening. When the valve opening is at its maximum and the valve shaft 3 is at its highest position, the spring pointer 5 rotates to its lowest position around the two insertion holes 32 of the valve shaft 3, thus not affecting the installation of the locking cover 6. This design minimizes the axial dimensions of the valve cover 2, valve shaft 3, and locking cover 6, resulting in a more compact structure.

[0023] In this embodiment, the two insertion holes 32 are spaced 180° apart.

[0024] In this embodiment, a locking cover 6 is also included. The locking cover 6 is installed on the open end of the valve cover 2 and covers the valve shaft 3. When adjusting the valve flow rate, the locking cover 6 is removed. After adjustment, the locking cover 6 is installed to cover the valve shaft 3, locking the valve and preventing unauthorized personnel from illegally operating the valve shaft 3, thus ensuring the safety of valve use.

[0025] In this embodiment, the spring pointer 5 is a wire pointer structure, which is easy to manufacture.

[0026] In this embodiment, the end face of the valve shaft 3 is provided with a waist-shaped groove 33, and the rotation of the valve shaft 3 is achieved by using a corresponding tool in conjunction with the waist-shaped groove 33.

[0027] In this embodiment, the dial 4 is fixed to the inner bottom surface of the valve cover 2.

[0028] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A spring-loaded pointer-type flow control valve, comprising a valve body and a valve cover, wherein a valve shaft is connected to the valve cover, characterized in that, It also includes a dial and a spring pointer. The dial is sleeved on the outside of the valve shaft and fixed to the inner bottom surface of the valve cover. One end of the spring pointer is a mounting end, used to be mounted on the valve shaft, and the other end is an indicating end, used to point to the scale value on the dial to indicate the current flow rate.

2. The spring pointer type flow control valve according to claim 1, characterized in that: The valve shaft has an annular groove at its end, and two insertion holes at the bottom of the annular groove. The mounting end includes two insertion rods and two arc-shaped rods. The insertion rods and the arc-shaped rods are connected in a one-to-one correspondence. One end of each of the two insertion rods is inserted into the two insertion holes, and the other end is connected to one end of the corresponding arc-shaped rod. The other ends of the two arc-shaped rods are connected to the indicator end. The two arc-shaped rods are engaged in the annular groove.

3. The spring pointer type flow control valve according to claim 2, characterized in that: The indicator end includes a V-shaped indicator rod, and the two ends of the opening of the V-shaped indicator rod are respectively connected to the ends of the two arc-shaped rods away from the plug rod.

4. The spring pointer type flow control valve according to claim 2, characterized in that: The two insertion holes are spaced 180° apart.

5. The spring pointer type flow control valve according to claim 1, characterized in that: It also includes a locking cover, which is used to be installed on the open end of the valve cover and cover the valve shaft.

6. The spring pointer type flow control valve according to claim 1, characterized in that: The spring pointer is a wire pointer structure.

7. The spring pointer type flow control valve according to claim 1, characterized in that: The end face of the valve shaft is provided with a waist-shaped groove.

8. The spring pointer type flow control valve according to claim 1, characterized in that: The dial is fixed to the inner bottom surface of the valve cover.

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