Flowmeter regulating valve capable of precisely regulating flow

Abstract

The utility model relates to the technical field of flow meter regulating valves, in particular to a flow meter regulating valve capable of precisely regulating flow. The valve seat is fixedly installed at the tail end of a flowmeter base, the valve needle seat is installed in the valve seat in a clearance fit mode, the opening guide pipe is fixedly installed between a sealing gasket and the valve seat in a clamped mode, the guide column is fixedly installed on the outer wall face of the valve needle, and the opening guide pipe is provided with an opening groove extending along the axis of the valve needle. The valve needle is in left-hand threaded connection with the valve needle seat, a limiting boss is arranged at the head end of the valve needle seat, a stepped hole is formed in the valve seat, and the valve needle seat is limited and installed at the hole shoulder of the valve seat through the limiting boss to limit outward movement of the valve needle seat. According to the structure, the singleness of the movement mode of the valve needle is guaranteed, the valve needle only moves forwards or backwards, control over the fluid inlet and outlet speed is enhanced, the stability of valve needle movement and flow control is enhanced through cooperation of the opening guide pipe and the guide column, the accuracy of fluid control is guaranteed, and the stability of the device is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of flow meter regulating valve technology, specifically a flow meter regulating valve for precise flow regulation. Background Technology

[0002] When using a flow meter to detect the flow rate of fluid in a pipeline, a flow meter regulating valve is usually installed to adjust the flow rate of the fluid in conjunction with the flow meter for fluid flow rate detection.

[0003] Flow meter regulating valves in the prior art, such as Figure 1 As shown, the fluid flows in from the fluid inlet 2 and out from the fluid outlet 3 by moving the valve needle 4 within the flowmeter base 1. The flow rate of the fluid is then adjusted by turning the valve needle 4. However, in this method, when the valve needle 4 is turned, it not only moves linearly but also rotates. When adjusting a small flow rate, the synchronous linear and rotational movements affect the stability of the flow rate adjustment, making it difficult to adjust to the required flow rate and affecting the precision and accuracy of the flow rate adjustment. Utility Model Content

[0004] Given that existing technologies cause the valve needle to move both linearly and rotary simultaneously when turned, affecting the precision and accuracy when adjusting small flow rates, this utility model provides a flow meter regulating valve for precise flow adjustment.

[0005] This utility model provides a flow meter regulating valve for precise flow adjustment, including a valve seat fixedly installed at the tail end of the flow meter base, a valve needle seat installed in the valve seat with clearance fit, an open guide tube clamped and fixed between a sealing gasket and the valve seat, and a guide post fixedly installed on the outer wall of the valve needle; the open guide tube has an open groove extending along the axis of the valve needle; the guide post is slidably installed in the open groove; the valve needle is connected to the valve needle seat with a reverse thread; the first end of the valve needle seat has a limiting boss, and the valve seat has a stepped hole, which limits the outward movement of the valve needle seat at the shoulder of the valve seat.

[0006] Furthermore, an adjusting head is fixedly installed at the tail end of the valve needle seat.

[0007] Furthermore, the valve needle seat and the adjusting head are riveted together.

[0008] Furthermore, the valve seat and the flow meter base are fixedly installed by threads.

[0009] Furthermore, the guide post is riveted to the outer wall surface of the valve needle.

[0010] Furthermore, the valve seat includes a threaded connection portion and an abutment portion disposed at the beginning of the threaded connection portion, the abutment portion clamping and fixing the open guide tube into the cavity of the flow meter base; the threaded connection portion is connected to the internal thread at the end of the flow meter base.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model patent utilizes a rotating valve seat to move a valve needle, which is threaded in the opposite direction to the valve seat, forward. A guide post is then provided on the valve needle, sliding within the opening groove of an open guide tube. This ensures the valve needle moves only along its axis and does not rotate, thus allowing for precise control of the fluid flow rate in the fluid channel. This structure not only guarantees the singular movement of the valve needle (either forward or backward) but also enhances the control of fluid inflow and outflow rates. The cooperation between the open guide tube and the guide post enhances the stability of the valve needle movement and the stability of flow control, ensuring precision and accuracy in fluid control and further guaranteeing the stability of the device's movement. It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a cross-sectional structural diagram of a flow regulating valve in the prior art.

[0015] Figure 2 This is a cross-sectional view of the overall structure of the flow meter regulating valve.

[0016] Figure 3 This is a cross-sectional structural diagram of an open guide tube.

[0017] The following are the labels in the diagram: 1. Flowmeter base; 2. Fluid inlet; 3. Fluid outlet; 4. Valve needle; 5. Sealing gasket; 6. Fluid passage;

[0018] 7. Valve seat; 72. Threaded connection part; 73. Abutment part; 8. Valve needle seat; 81. Limiting boss; 9. Open guide tube; 91. Open groove; 10. Guide post; 11. Adjusting head. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] Example 1:

[0023] Please refer to Figures 1-3 This utility model provides a flow meter regulating valve for precise flow regulation, comprising: a flow meter base 1, a fluid inlet 2 opened at one end of the flow meter base 1, a fluid outlet 3 opened on one side of the flow meter base 1, a fluid channel 6 connecting the fluid inlet 2 and the fluid outlet 3, a valve needle 4 passing through the fluid channel 6, a valve seat 7 fixedly installed at the tail end of the flow meter base 1, a valve needle seat 8 installed in the valve seat 7 with clearance fit, an open guide tube clamped and fixedly installed between the sealing gasket 5 and the valve seat 7, and a guide post 10 fixedly installed on the outer wall of the valve needle 4; the open guide tube has an open groove 91 extending along the axis of the valve needle 4; the guide post 10 is slidably installed in the open groove 91; the valve needle 4 and the valve needle seat 8 are connected by a reverse thread; the first end of the valve needle seat 8 has a limiting boss 81, and the valve seat 7 has a stepped hole 71, which limits the outward movement of the valve needle seat 8 by limiting the hole shoulder of the valve seat 7.

[0024] In this embodiment, rotating the valve seat 7 causes the valve needle 4, which is installed with a reverse thread on the valve seat 7, to move forward. A guide post 10 is then provided on the valve needle 4, and the guide post 10 slides within the opening groove 91 of the open guide tube 9, ensuring that the valve needle 4 only moves along its axis and does not rotate. This allows for precise control of the fluid flow rate in the fluid channel 6. This structure not only ensures the singular movement mode of the valve needle 4—moving only forward or backward—but also enhances the control of fluid inflow and outflow speeds. The cooperation between the open guide tube 9 and the guide post 10 enhances the stability of the valve needle 4's movement and the stability of flow control, ensuring the precision and accuracy of fluid control, and further guaranteeing the stability of the device's movement.

[0025] In this embodiment, an adjusting head 11 is fixedly installed at the tail end of the valve needle seat 8. By turning the adjusting head 11, the valve needle seat 8 is rotated, which causes the valve needle 4, which is installed with the valve needle seat 8 through a reverse thread, to move forward. Fluid enters the fluid channel 6 from the fluid inlet 2. The fluid flow rate is adjusted by controlling the forward or backward movement of the valve needle 4. When the valve needle 4 moves forward, the distance between the tip of the valve needle 4 and the inner wall of the fluid channel 6 gradually decreases, thereby slowing down the fluid flow rate. When the valve needle 4 moves backward, the distance between the tip of the valve needle 4 and the inner wall of the fluid channel 6 gradually increases, thereby increasing the fluid flow rate.

[0026] Furthermore, by engaging the limiting boss 81 with the stepped hole 71, the valve needle seat 8 can be fixedly installed with the valve seat 7. When the adjusting head 11 is turned, the valve seat 7 can restrict the outward movement of the valve needle seat 8, thereby ensuring the stability of the device.

[0027] Furthermore, by setting the valve seat 7 to abut and fix the open guide tube 9, and by having the guide post 10 slide in the open groove 91 of the open guide tube 9, the valve needle 4 is guaranteed to move linearly along the axial direction, ensuring the singleness of movement, reducing instability caused by unnecessary movement, and enhancing the stability of the device.

[0028] Furthermore, the sealing gasket 5 ensures that the fluid in the fluid channel 6 will not flow into other cavities within the flowmeter base 1, prevents internal structural components from being corroded by the fluid, and ensures the stability of the guide column 10 moving within the opening groove 91 of the open guide tube 9. This allows for precise control of the valve needle 4's movement, ensuring the accuracy of speed control in the fluid channel 6 and guaranteeing the sealing of the fluid channel 6, further enhancing the degree of fluid control.

[0029] Furthermore, the valve needle seat 8 and the adjusting head 11 are riveted together, the valve seat 7 is fixedly installed to the flow meter base 1 by threads, and the guide column 10 is riveted to the outer wall of the valve needle 4, which ensures the integrity of the device and further strengthens the stability of the connection.

[0030] like Figure 2 As shown, the valve seat 7 includes a threaded connection part 72 and an abutment part 73 provided at the beginning of the threaded connection part 72. The abutment part 73 clamps and fixes the open guide tube 9 in the cavity of the flow meter base 1. The threaded connection part 72 is connected to the internal thread at the end of the flow meter base 1.

[0031] In this embodiment, the abutment portion 73 allows the open guide tube 9 to be fixed inside the cavity of the flow meter base 1, thereby ensuring the stability of the guide post 10 sliding within the opening groove 91 of the open guide tube 9.

[0032] Furthermore, the threaded connection 72 allows the valve seat 7 and the flow meter base 1 to be fixedly installed by threads. The length of the threaded connection 72 can be adapted to shorten while ensuring the stability of the connection between the valve seat 7 and the flow meter base 1, making the equipment in the department more economical.

[0033] Example 2:

[0034] like Figures 2-3 As shown, the difference between Embodiment 2 and Embodiment 1 is that the adjusting head 11 is omitted, and the valve needle seat 8 is set as a structure that protrudes from the tail end of the flow meter to replace the adjusting head 11. By turning the valve needle seat 8, the valve needle 4 that is connected to the valve needle seat 8 by reverse thread can be directly controlled.

[0035] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A flow meter regulating valve for precise flow regulation, characterized in that, The device includes a valve seat (7) fixedly installed at the tail end of the flow meter base (1), a valve needle seat (8) with clearance fit installed in the valve seat (7), an open guide tube (9) clamped and fixed between the sealing gasket (5) and the valve seat (7), and a guide post (10) fixedly installed on the outer wall of the valve needle (4); the open guide tube (9) has an open groove (91) extending along the axis of the valve needle (4); the guide post (10) is slidably installed in the open groove (91); the valve needle (4) is connected to the valve needle seat (8) by reverse thread; the first end of the valve needle seat (8) has a limiting boss (81), and the valve seat (7) has a stepped hole (71) in the valve seat (7), which limits the movement of the valve needle seat (8) outward by limiting the installation at the shoulder of the valve seat (7).

2. The flow meter regulating valve for precise flow regulation according to claim 1, characterized in that, An adjusting head (11) is fixedly installed at the tail end of the valve needle seat (8).

3. The flow meter regulating valve for precise flow regulation according to claim 2, characterized in that, The valve needle seat (8) and the adjusting head (11) are riveted together.

4. The flow meter regulating valve for precise flow regulation according to claim 1, characterized in that, The valve seat (7) and the flow meter base (1) are fixedly installed by threads.

5. The flow meter regulating valve for precise flow regulation according to claim 1, characterized in that, The guide post (10) is riveted to the outer wall of the valve needle (4).

6. The flow meter regulating valve for precise flow regulation according to claim 1, characterized in that, The valve seat (7) includes a threaded connection part (72) and an abutment part (73) provided at the beginning of the threaded connection part (72). The abutment part (73) clamps and fixes the open guide tube (9) in the cavity of the flow meter base (1). The threaded connection part (72) is connected to the internal thread at the end of the flow meter base (1).

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