Gas flow control valve in experiment

Abstract

The utility model discloses a gas flow control valve in an experiment, which comprises a control valve shell, a flow regulating mechanism is fixed in the control valve shell, and a flow control assembly vertically slides in the control valve shell through the flow regulating mechanism. The flow control assembly comprises a first-gear flow channel part, a second-gear flow channel part and a third-gear flow channel part. Through the arrangement of the flow adjusting mechanism and the flow control assembly, the proper flow is selected according to the experiment condition, and the deflector rod is moved to the corresponding groove position of the limiting piece; when the first-gear flow channel part, the second-gear flow channel part and the third-gear flow channel part are located at the positions of the through holes respectively, the device has different gas flows, through control of the flow adjusting mechanism, the flow control assembly achieves multi-gear gas flow adjustment for the channels, positioning of the clear flow gear size is achieved, and the flow control assembly is convenient to operate. And the gas flow at the same gear can be accurately controlled, so that the accuracy of an experimental result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a gas flow control valve for experiments. Background Art

[0002] In existing experiments, the working principle of the gas control valve is usually to adjust the gas flow based on the degree of opening of the valve. The control valve can adjust the gas flow by adjusting the opening of the valve, thereby achieving control of system parameters such as pressure and flow rate.

[0003] In existing experiments, the gas flow control valve lacks clear positioning of the flow gear size. Sometimes when different batches do the same experiment, there is a slight offset in the position of the manually adjusted control valve, which will cause errors in the flow size, affecting the accuracy of the experimental results. Utility Model Content

[0004] The purpose of the utility model is to provide a gas flow control valve for use in experiments, so as to solve the problem that the existing gas flow control valve for use in experiments proposed in the above-mentioned background technology lacks clear positioning of the flow gear size, and sometimes when different batches do the same experiment, there is a slight offset in the position of the manually adjusted control valve, and there will be errors in the flow size, which affects the accuracy of the experimental results.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an experimental gas flow control valve, comprising a control valve housing, a flow regulating mechanism and a flow control component, a control valve extension housing is provided at the bottom of the control valve housing, a flow regulating mechanism is fixed inside the control valve housing, the flow control component slides vertically in the control valve housing through the flow regulating mechanism, and the flow control component comprises a first-gear flow channel portion, a second-gear flow channel portion and a third-gear flow channel portion.

[0006] Preferably, the flow control component further comprises a closing plate, and the horizontal areas of the first-gear flow channel portion, the second-gear flow channel portion and the third-gear flow channel portion decrease in sequence and are vertically distributed in sequence at the bottom of the closing plate.

[0007] Preferably, a through hole connected to the control valve extension housing is provided at the bottom of the control valve housing, the size of the closing plate is larger than the size of the through hole, the closing plate includes a second sealing ring, and when the device is in a valve closed state, the closing plate fits tightly against the bottom of the control valve housing, and the second sealing ring is located between the two.

[0008] Preferably, the flow regulating mechanism includes a positioning component and an adjusting component, the positioning component includes a fixing part and a connecting part, the adjusting component includes a supporting part, the fixing part is fixedly connected inside the control valve housing through the connecting part, and the fixing part is welded to the supporting part.

[0009] Preferably, the flow regulating mechanism also includes a limit member, one end of which is welded and fixed on the support member, and one end of which passes through the control valve housing and is fixed on the outer surface of the control valve housing. The limit member connects the support member with the control valve housing, and a plurality of groups of grooves are provided at the diameter of the limit member at the end of the control valve housing.

[0010] Preferably, the adjustment assembly also includes a movable part and a first sealing ring, the bottom of the support member is snap-connected to the first sealing ring, the outer diameter of the movable part matches the inner diameter of the first sealing ring, and the movable part passes through the first sealing ring to form a lifting structure inside the support member.

[0011] Preferably, the adjustment assembly also includes a lever, a compression plate and a spring, the compression plate passes through the interior of the end position of the lever, two groups of compression plates are provided, and the two groups of compression plates are connected by a spring inside the end position of the lever, one end of the lever is fixedly connected to the movable part, the other end of the lever passes through the limit part, and the compression plate is located in the groove of the limit part in an un-extruded state.

[0012] Preferably, a support assembly is provided between the clamping platform and the clamping center body, the support assembly includes a rotating connector and a support frame, the rotating connector is rotatably connected to the clamping platform, and the rotating connector and the clamping center body are fixedly connected by multiple groups of support frames.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a flow regulating mechanism and a flow control component. When the valve of the device needs to be opened, a suitable flow size is selected according to the experimental situation, the lever is moved to the corresponding limiter groove position, and the compression plate is released so that the compression plate enters the groove to complete the adjustment of the gas flow size. During the adjustment process, the three limiter groove positions that the compression plate can change upwards respectively represent the state where the side of the first-gear flow channel part, the second-gear flow channel part, and the third-gear flow channel part of the internal structure are positioned to the through-hole position of the control valve extension shell. When the three are respectively at the through-hole position, the device has different sizes of gas flow. During the experiment of the device, when the valve is open, through the control of the flow regulating mechanism, the flow control component realizes multi-gear gas flow regulation for the channel, and has a clear positioning of the flow gear size. The gas flow size of the same gear can be accurately controlled in each experiment without error, thereby improving the accuracy of the experimental results.

[0015] 2. The utility model provides the first sealing ring and the second sealing ring. The first sealing ring is provided between the bottom of the support and the movable part to ensure that the gas will not leak out from the position of the limiter during the experiment. When the device is in the valve closed state, the second sealing ring is located between the closing plate and the bottom of the control valve housing. The closing plate isolates the internal channel and isolates the gas transmission. Both improve the airtightness of the device in the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of the gas flow control valve of the utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the gas flow control valve of the utility model in the open state.

[0018] Figure 3 This is a schematic diagram of the internal structure of the gas flow control valve of the utility model in a closed state.

[0019] Figure 4 It is a schematic diagram of the structure of the flow regulating mechanism and flow control component of the utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the regulating component of the utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the support member and the first sealing ring of the utility model.

[0022] Figure 7 It is a schematic diagram of the structure of the lever and the compression plate of the utility model.

[0023] Figure 8 This is a schematic diagram of the structure of the flow control component of the utility model.

[0024] In the figure: 1. control valve housing; 2. control valve extension housing; 3. upper connector; 4. lower connector; 5. flow regulating mechanism; 51. positioning assembly; 511. fixing member; 512. connecting member; 52. regulating assembly; 521. supporting member; 522. movable member; 523. first sealing ring; 524. lever; 525. compression plate; 526. spring; 53. limit member; 6. flow control assembly; 61. closing plate; 611. second sealing ring; 62. first gear flow channel portion; 63. second gear flow channel portion; 64. third gear flow channel portion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] An embodiment provided by the utility model: Figure 1 As shown, a gas flow control valve in an experiment includes a control valve housing 1, a control valve extension housing 2, an upper connecting head 3, a lower connecting head 4, a flow regulating mechanism 5 and a flow control component 6.

[0027] like Figure 1 As shown, a control valve extension housing 2 is provided at the bottom of the control valve housing 1, an upper connector 3 is provided at the top of the control valve housing 1, and a lower connector 4 is provided at the bottom of the control valve extension housing 2, which are connected up and down for installation. The upper connector 3 and the lower connector 4 are connected respectively, and the device can be installed in the experimental process.

[0028] like Figure 3 and Figure 4 As shown, a flow regulating mechanism 5 is fixed inside the control valve housing 1, and the flow regulating mechanism 5 includes a positioning assembly 51 and an adjusting assembly 52. ​​The positioning assembly 51 includes a fixing member 511 and a connecting member 512. The adjusting assembly 52 includes a supporting member 521. The fixing member 511 is fixedly connected inside the control valve housing 1 through the connecting member 512, and the fixing member 511 is welded to the supporting member 521. The flow regulating mechanism 5 also includes a limiting member 53, one end of which is welded and fixed to the supporting member 521, and one end of the limiting member 53 passes through the control valve housing 1 and is fixed to the outer surface of the control valve housing 1. The limiting member 53 connects the supporting member 521 with the control valve housing 1, and a plurality of grooves are provided at the caliber of the limiting member 53 at the end of the control valve housing 1.

[0029] like Figure 6 As shown, the adjustment component 52 also includes a movable part 522 and a first sealing ring 523. The bottom of the support member 521 is snap-connected to the first sealing ring 523. The outer diameter of the movable part 522 matches the inner diameter of the first sealing ring 523. The movable part 522 passes through the first sealing ring 523 to form a lifting structure inside the support member 521.

[0030] like Figure 5 and Figure 7As shown, the adjustment component 52 also includes a lever 524, a compression plate 525 and a spring 526. The compression plate 525 runs through the interior of the end position of the lever 524. Two groups of compression plates 525 are provided, and the two groups of compression plates 525 are connected by a spring 526 inside the end position of the lever 524. One end of the lever 524 is fixedly connected to the movable part 522, and the other end of the lever 524 passes through the limit member 53, and the compression plate 525 is located in the groove of the limit member 53 in the un-extruded state.

[0031] like Figure 2 As shown, the flow control assembly 6 slides vertically in the control valve housing 1 through the flow adjustment mechanism 5 .

[0032] like Figure 8 As shown, the flow control component 6 includes a closing plate 61, a first-gear flow channel portion 62, a second-gear flow channel portion 63 and a third-gear flow channel portion 64. The horizontal areas of the first-gear flow channel portion 62, the second-gear flow channel portion 63 and the third-gear flow channel portion 64 decrease successively and are vertically distributed in sequence at the bottom of the closing plate 61.

[0033] like Figure 2 As shown, a through hole communicating with the control valve extension housing 2 is opened at the bottom of the control valve housing 1 , the size of the closing plate 61 is larger than the size of the through hole, and the closing plate 61 includes a second sealing ring 611 , which is located at the bottom edge of the closing plate 61 .

[0034] Working dynamics: When the device is in the valve closing state, the compression plate 525 is located in the groove at the bottom of the limit member 53, the lever 524 is located below the limit member 53, and the movable member 522 moves the closing plate 61 to a position tightly fitting with the bottom of the control valve housing 1. The first-gear flow channel part 62, the second-gear flow channel part 63 and the third-gear flow channel part 64 are all in the space of the control valve extension housing 2. At this time, the second sealing ring 611 is located between the closing plate 61 and the bottom of the control valve housing 1. The closing plate 61 isolates the internal channel and isolates the gas transmission.

[0035] When the valve of the device needs to be opened, the staff squeezes the compression sheet 525 so that the lever 524 can move up and down in the limiter 53, moves the lever 524 upward, drives the movable part 522 to rise inside the support 521, and the flow control assembly 6 also moves upward. During the adjustment process, the three groove positions of the limiter 53 that the compression sheet 525 can change upward represent the state that the side of the first-gear flow channel part 62, the second-gear flow channel part 63 and the third-gear flow channel part 64 of the internal structure are positioned to the through-hole position of the control valve extension housing 2. Since the gaps between the first-gear flow channel part 62, the second-gear flow channel part 63 and the third-gear flow channel part 64 and the through-hole are successively increased, the device has different gas flow rates when the three are respectively at the through-hole position. According to the experimental situation, select the appropriate flow rate, move the lever 524 to the corresponding groove position of the limiter 53, release the compression sheet 525 so that the compression sheet 525 enters the groove, and completes the adjustment of the gas flow. During the experiment, when the valve is open, the flow control component 6 realizes multi-speed gas flow regulation for the channel through the control of the flow regulating mechanism 5, and has clear positioning of the flow gear size. The gas flow size of the same gear can be accurately controlled for each experiment without error, thereby improving the accuracy of the experimental results.

[0036] Among them, the limit member 53 is sealedly connected to the control valve housing 1 and the support member 521, and there is a first sealing ring 523 between the bottom of the support member 521 and the movable member 522. A sealing state is formed in these two structures to ensure that the gas will not leak from the position of the limit member 53 during the experiment.

[0037] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A gas flow control valve in an experiment, comprising a control valve housing (1), characterized in that: The control valve body (1) further comprises a flow regulating mechanism (5) and a flow control assembly (6); a control valve extension housing (2) is provided at the bottom of the control valve housing (1); the flow regulating mechanism (5) is fixed inside the control valve housing (1); the flow control assembly (6) slides vertically inside the control valve housing (1) through the flow regulating mechanism (5); and the flow control assembly (6) comprises a first-gear flow channel portion (62), a second-gear flow channel portion (63) and a third-gear flow channel portion (64).

2. The gas flow control valve in an experiment according to claim 1, characterized in that: The flow control assembly (6) further comprises a closing plate (61), wherein the horizontal areas of the first-gear flow channel portion (62), the second-gear flow channel portion (63) and the third-gear flow channel portion (64) decrease in sequence and are vertically distributed in sequence at the bottom of the closing plate (61).

3. The gas flow control valve in an experiment according to claim 2, characterized in that: The bottom of the control valve housing (1) is provided with a through hole connected to the control valve extension housing (2); the size of the closing plate (61) is larger than the size of the through hole; the closing plate (61) includes a second sealing ring (611); when the bottom of the control valve housing (1) is in a closed state, the closing plate (61) is tightly fitted to the bottom of the control valve housing (1), and the second sealing ring (611) is located between the two.

4. The gas flow control valve in an experiment according to claim 1, characterized in that: The flow regulating mechanism (5) comprises a positioning component (51) and an adjusting component (52); the positioning component (51) comprises a fixing member (511) and a connecting member (512); the adjusting component (52) comprises a supporting member (521); the fixing member (511) is fixedly connected inside the control valve housing (1) via the connecting member (512); and the fixing member (511) is welded to the supporting member (521).

5. The gas flow control valve in an experiment according to claim 4, characterized in that: The flow regulating mechanism (5) further comprises a limit member (53), one end of which is welded and fixed to the support member (521), one end of which passes through the control valve housing (1) and is fixed to the outer surface of the control valve housing (1), the limit member (53) connects the support member (521) with the control valve housing (1), and a plurality of groups of grooves are provided at the aperture of the limit member (53) at the end of the control valve housing (1).

6. The gas flow control valve in an experiment according to claim 4, characterized in that: The adjustment component (52) further comprises a movable part (522) and a first sealing ring (523); the bottom of the support member (521) is snap-connected to the first sealing ring (523); the outer diameter of the movable part (522) matches the inner diameter of the first sealing ring (523); the movable part (522) passes through the first sealing ring (523) to form a lifting structure inside the support member (521).

7. A gas flow control valve in an experiment according to claim 4, 5 or 6, characterized in that: The adjustment assembly (52) further comprises a lever (524), a compression sheet (525) and a spring (526); the compression sheet (525) penetrates inside the end of the lever (524); two groups of compression sheets (525) are provided, and the two groups of compression sheets (525) are connected by a spring (526) inside the end of the lever (524); one end of the lever (524) is fixedly connected to the movable member (522); the other end of the lever (524) passes through the limiting member (53); and the compression sheet (525) is located in a groove of the limiting member (53) in a non-pressed state.

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