Flow adjusting device

Abstract

The utility model discloses a flow regulating device, which belongs to the technical field of gas flow controllers, and comprises a main body and a sealing interface, the sealing interface is connected with the main body, the sealing interface comprises a rod body section and a threaded section which are integrated, the end part of the threaded section is provided with a frustum, the end face of the frustum is provided with an annular groove, and the annular groove is provided with a sealing ring. A rubber sealing element is fixed in the annular groove, and an insertion ring of the rubber sealing element is in interference fit with the annular groove of the frustum, so that the sealing element is fixed and does not fall off; the concave groove of the boss is communicated with the fixing groove, so that the inner end face of the annular pad is partially exposed, external force can be applied through the concave groove during disassembly, the annular pad is easily taken down, the problem that a traditional interference fit component is difficult to disassemble is solved, and maintenance and replacement are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas flow controller technical field especially relates to a flow regulating device. BACKGROUND

[0002] The gas mass flow controller carries out precision measurement and control to the mass flow of gas. It has important and extensive application in the research and production of multiple fields. The gas mass flow controller is usually composed of shunt, flow measuring device, flow regulating device and control circuit board etc. device, and needs to be connected to the pipe when in use.

[0003] The flow regulating device in the prior art is connected with the pipe, in order to ensure the sealing connection, the raw rubber band needs to be wound at the joint, but the joint becomes thick after the raw rubber band is wound, which leads to very inconvenient connection, and similarly, when the pipe needs to be replaced, it is also very troublesome to disassemble, and the joint needs to be cleaned before the structure can be reinstalled, leading to complicated operation. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem of the joint winding raw rubber band mentioned in the above background art, but the joint becomes thick after the raw rubber band is wound, which leads to very inconvenient connection, and similarly, when the pipe needs to be replaced, it is also very troublesome to disassemble, and the joint needs to be cleaned before the structure can be reinstalled, leading to complicated operation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A flow regulating device, comprising a main body and a sealing interface, the sealing interface is connected to the main body, the sealing interface comprises an integral rod body segment and a threaded segment, the end of the threaded segment has a cone frustum, the end face of the cone frustum is provided with an annular groove, and a rubber sealing element is fixed in the annular groove.

[0007] Preferably, the rubber sealing element comprises an insertion ring, and the insertion ring is in interference fit with the annular groove.

[0008] Preferably, the end face of the insertion ring is fixed with an annular plate abutting the end face of the cone frustum.

[0009] Preferably, a tapered cylinder abutting the taper face of the cone frustum is fixed on the circumferential surface of the annular plate.

[0010] Preferably, the insertion ring, the annular plate and the tapered cylinder are integrally formed.

[0011] Preferably, the rod body segment has a boss, the diameter of the boss is greater than the diameter of the rod body segment, the side of the boss facing the threaded segment is provided with an annular pad, and the annular pad is sleeved on the threaded segment.

[0012] Preferably, the boss is provided with a fixing groove, and an axial depth of the fixing groove is less than a thickness of the annular gasket.

[0013] Preferably, the boss is provided with a recessed groove in a radial direction, and the recessed groove is communicated with the fixing groove.

[0014] Preferably, an axial length of the recessed groove is greater than the thickness of the annular gasket, and a radial length of the recessed groove is greater than a wall thickness of the fixing groove.

[0015] Preferably, the main body is provided with a mounting groove, and a mounting plate is mounted on the mounting groove, and a connecting hole is formed in the mounting plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The insertion ring of the rubber sealing element is in interference fit with the annular groove of the frustum, so that the sealing element is fixed and does not fall off; the recessed groove of the boss is communicated with the fixing groove, so that the inner end surface of the annular gasket is exposed, and when the annular gasket is disassembled, external force can be applied through the recessed groove, so that the annular gasket is easily taken out, the problem of difficult disassembly of the traditional interference fit component is solved, and maintenance and replacement are facilitated.

[0018] The insertion ring is inserted into the annular groove, the annular plate is attached to the end surface of the frustum, the frustum is attached to the conical surface of the frustum, and a large-area contact is formed with the conical groove in the connecting pipe, so that face sealing is replaced by single line sealing, and the sealing effect is significantly improved, and gas leakage is prevented.

[0019] The annular gasket of the boss side is sleeved on the threaded segment, and is deformed after being pressed by the nut, so that the connection gap is filled, double sealing is formed in cooperation with the rubber sealing element, and the sealing property is further enhanced.

[0020] The interference fit between the insertion ring and the annular groove and the interference fit between the annular gasket and the fixing groove prevent the sealing element from falling off or being displaced when the device moves or vibrates, and ensure the stability during long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a whole structure schematic view of the utility model.

[0023] Figure 2 It is a sealing interface schematic view of the utility model.

[0024] Figure 3 It is a sealing interface schematic view of the utility model. Figure 2Enlarged view of the annular groove at A.

[0025] Figure 4 Schematic view of the annular groove and the fixing groove of the utility model.

[0026] Figure 5 Schematic view of the recessed groove of the utility model.

[0027] Figure 6 Schematic view of the rubber sealing element of the utility model.

[0028] Figure 7 Schematic view of the cone cylinder in reverse.

[0029] Figure 8 Schematic view of the installation groove of the utility model.

[0030] Figure number explanation: 1, main body; 11, installation groove; 2, sealing interface; 21, rod body section; 22, threaded section; 23, cone; 24, annular groove; 25, boss; 26, fixing groove; 27, recessed groove; 3, rubber sealing element; 31, insertion ring; 32, annular plate; 33, cone cylinder; 4, annular pad; 5, connecting pipe; 51, nut; 52, taper groove; 6, mounting plate; 61, connecting hole. DETAILED DESCRIPTION

[0031] The utility model will be described in further detail below in combination with the drawings.

[0032] The following description is provided to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles defined in the following description can be used in other embodiments, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.

[0033] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or position indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of the simplified description of the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above-mentioned terms cannot be understood as a limitation of the utility model.

[0034] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0035] Referring to Figures 1-8 A flow regulating device, comprising a main body 1 and a sealing interface 2 connected to the main body 1, the sealing interface 2 is provided with two, one is an air inlet, and the other is an air outlet, the arrow direction is the gas flow direction, the sealing interface 2 comprises an integral rod body segment 21 and a threaded segment 22, the rod body segment 21 is connected to the main body 1, the end of the threaded segment 22 has a frustum 23, the end face of the frustum 23 is provided with an annular groove 24, and the annular groove 24 is fixedly provided with a rubber sealing element 3.

[0036] The rubber sealing element 3 comprises an insertion ring 31, the insertion ring 31 is in interference fit with the annular groove 24, so that the rubber sealing element 3 will not fall off, and the end face of the insertion ring 31 is fixedly provided with an annular plate 32 abutting the end face of the frustum 23. The circumferential surface of the annular plate 32 is fixedly provided with a tapered cylinder 33 abutting the tapered surface of the frustum 23. The insertion ring 31, the annular plate 32 and the tapered cylinder 33 are integrally formed, the connecting threaded segment 22 is provided with a rotating nut 51 on the connecting pipe 5, and the connecting pipe 5 is provided with a matched tapered groove 52. When connected, the contact surface of the insertion ring 31, the annular plate 32 and the tapered cylinder 33 with the tapered groove 52 is more, so that the sealing effect is better. When installing the rubber sealing element 3, the insertion ring 31 is inserted into the annular groove 24, and then the annular plate 32 and the tapered cylinder 33 are respectively abutted with the end face of the frustum 23 and the tapered surface of the frustum 23. As shown in the figure, in order to facilitate the installation of the sealing element, the tapered cylinder 33 is reversed, and at this time the insertion ring 31 is exposed, so that the insertion ring 31 is aligned with the annular groove 24. Figure 7

[0037] The rod body segment 21 is provided with a boss 25, the diameter of the boss 25 is greater than the diameter of the rod body segment 21, and the side of the boss 25 facing the threaded segment 22 is provided with an annular gasket 4, the annular gasket 4 is sleeved on the threaded segment 22, the nut 51 compresses the annular gasket 4, and the sealing effect is increased. The annular gasket 4 cooperates with the rubber sealing element to form double sealing.

[0038] The boss 25 is provided with a fixing groove 26, the axial depth of the fixing groove 26 is less than the thickness of the annular gasket 4, so that a part of the annular gasket 4 is exposed outside the fixing groove 26, facilitating the compression and deformation of the nut 51, and the annular gasket 4 is inserted into the fixing groove 26 through interference fit, so that the annular gasket 4 remains stable during the movement of the flow regulating device.

[0039] ​The boss 25 is radially provided with a recessed groove 27, which is communicated with the fixing groove 26. The axial length of the recessed groove 27 is greater than the thickness of the annular pad 4, and the radial length of the recessed groove 27 is greater than the wall thickness of the fixing groove 26 (the distance from the surface of the boss 25 to the fixing groove 26). Through the recessed groove 27, a part of the inner end surface of the annular pad 4 is exposed, which facilitates the disassembly of the annular pad 4. Through the recessed groove 27, the annular pad 4 is facilitated to be installed and disassembled.

[0040] The main body 1 is provided with a mounting groove 11, and the mounting plate 6 is mounted on the mounting groove 11. The mounting plate 6 is provided with a connecting hole 61. The rear side and the bottom of the main body 1 are both provided with the mounting groove 11. The mounting plate 6 can be fixed on the main body 1 through screws. Then, the main body 1 is fixed through screws or bolts in cooperation with the connecting hole 61. According to the needs, it can be determined whether the mounting plate 6 is installed on the main body 1, so as to be suitable for different installation scenes.

[0041] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments. Without departing from the principle, the embodiments of the utility model can be any deformation or modification.

Claims

1. A flow regulating device, characterized by, Include: Main body (1); Sealing interface (2) is connected in main body (1), sealing interface (2) includes integral stem section (21) and threaded section (22), the end of threaded section (22) has frustum (23), the end face of frustum (23) is provided with annular groove (24), rubber sealing element (3) is fixed in annular groove (24).

2. A flow regulating device according to claim 1, wherein: The rubber sealing element (3) includes an insertion ring (31), and the insertion ring (31) is in interference fit with the annular groove (24).

3. A flow regulating device according to claim 2, wherein: The end face of the insertion ring (31) is fixed with the annular plate (32) abutting the end face of the frustum (23).

4. A flow regulating device according to claim 3, wherein: The circumferential surface of the annular plate (32) is fixed with the tapered cylinder (33) abutting the taper of the frustum (23).

5. A flow regulating device according to claim 4, wherein: The insertion ring (31), the annular plate (32) and the tapered cylinder (33) are integrally formed.

6. A flow regulating device according to claim 1, wherein: The stem section (21) has a boss (25), the diameter of the boss (25) is greater than the diameter of the stem section (21), the side of the boss (25) facing the threaded section (22) is provided with an annular pad (4), and the annular pad (4) is sleeved on the threaded section (22).

7. A flow regulating device according to claim 6, wherein: The boss (25) is provided with a fixing groove (26), and the axial depth of the fixing groove (26) is less than the thickness of the annular pad (4).

8. A flow regulating device according to claim 7, wherein: The boss (25) is provided with a recessed groove (27) in the radial direction, and the recessed groove (27) is in communication with the fixing groove (26).

9. A flow regulating device according to claim 8, wherein: The axial length of the recessed groove (27) is greater than the thickness of the annular pad (4), and the radial length of the recessed groove (27) is greater than the wall thickness of the fixing groove (26).

10. The flow regulating device of claim 1, wherein: The main body (1) is provided with a mounting groove (11), the mounting plate (6) is mounted on the mounting groove (11), and the connecting hole (61) is formed in the mounting plate (6).

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