Vacuum pump air guide conversion pipe

Abstract

The utility model discloses a switching tube structure, belongs to the technical field of vacuum pumps, and particularly relates to a vacuum pump air guide switching tube which comprises an air inlet assembly, an air outlet assembly and a volute. The air inlet assembly is fixedly connected with the top of the volute, and the air outlet assembly is fixedly connected with an outlet part of the volute; the inlet of the volute is connected with the air inlet assembly, the tail end of the outlet of the volute is connected with the air outlet assembly, and the air inlet assembly and the air outlet assembly both adopt the reducing pipelines, so that the surge of the vacuum pump can be effectively reduced, and the pneumatic performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model discloses a conversion pipe structure belongs to vacuum pump technical field, specifically relates to a vacuum pump gas guide conversion pipe. BACKGROUND

[0002] Vacuum pump is the device or equipment that utilizes mechanical, physical, chemical or physical chemistry to carry out pumping to the container and obtains vacuum, in the process of inhaling, the volume of the inhaling cavity increases, and the vacuum degree reduces, and the gas in the container is inhaled into the pump cavity, and in the process of exhausting, the volume becomes smaller, and the pressure increases, and finally the inhaled gas is discharged out of the pump through the oil seal.

[0003] In the occasion of using the vacuum pump, the equipment space is limited, and because the inlet and outlet pipe diameter of the vacuum pump host is certain, the pipe diameter of the conversion pipe is often selected to be the same as the inlet and outlet pipe diameter of the host, which makes the machine appear surge when running, and causes the loss of pneumatic performance. UTILITY MODEL CONTENT

[0004] The utility model discloses a vacuum pump gas guide conversion pipe, solves the problem mentioned above.

[0005] Technical scheme: a vacuum pump gas guide conversion pipe, the conversion pipe includes: gas inlet assembly, gas outlet assembly and volute;

[0006] The gas inlet assembly is fixedly connected with the top of the volute, and the gas outlet assembly is fixedly connected with the outlet portion of the volute.

[0007] In further embodiments, the gas inlet assembly and the gas outlet assembly are curved at a certain angle and are arranged in cross.

[0008] In further embodiments, the gas inlet assembly includes: an inlet elbow pipe, one end of which is fixedly connected with the top of the volute;An inlet flange pipe, one end of which is fixedly connected with the other end of the inlet elbow pipe through a connecting hose.

[0009] In further embodiments, the diameter of the inlet elbow pipe gradually increases from one end to the other end.

[0010] In further embodiments, the inlet flange pipe is provided with a through hole.

[0011] In further embodiments, the gas outlet assembly includes: an outlet elbow pipe, one end of which is fixedly connected with the outlet portion of the volute;A variable-diameter straight pipe, one end of which is fixedly connected with the other end of the outlet elbow pipe;An outlet flange pipe, one end of which is fixedly connected with the other end of the variable-diameter straight pipe.

[0012] In further embodiments, the diameter of the outlet elbow pipe and the variable-diameter straight pipe gradually increases from one end to the other end.

[0013] Beneficial effects: the utility model discloses a volute imports and connects the air intake assembly, and the air outlet assembly is connected at the end of export, and air intake assembly and air outlet assembly all adopt variable diameter pipeline, thereby can effectively reduce the vacuum pump surge, improve pneumatic performance simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the isometric view of the utility model.

[0015] Figure 2 is the top view of the utility model.

[0016] Figure 3 is the bottom view of the utility model.

[0017] Reference signs: air intake assembly 1, air outlet assembly 2, volute 3, import elbow pipe 10, import flange pipe 11, connecting hose 12, through hole 13, export elbow pipe 20, variable diameter straight pipe 21, export flange pipe 22. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described below in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0019] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0020] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through the intermediate medium, can be the communication inside two elements. For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] A gas inlet assembly 1, a gas outlet assembly 2, and a volute 3.

[0022] In one embodiment, as shown in Figure 1 The gas inlet assembly 1 is fixedly connected to the top of the volute 3, and the gas outlet assembly 2 is fixedly connected to the outlet of the volute 3.

[0023] In one embodiment, as shown in Figure 1 The gas inlet assembly 1 is fixedly connected to the top of the volute 3, and the gas outlet assembly 2 is fixedly connected to the outlet of the volute 3.

[0024] In one embodiment, as shown in Figures 2-3 The gas inlet assembly 1 includes an inlet elbow 10 fixedly connected to the top of the volute 3 at one end, and an inlet flange pipe 11 fixedly connected to the other end of the inlet elbow 10 through a connecting hose 12.

[0025] In one embodiment, as shown in Figures 2-3 The diameter of the inlet elbow 10 gradually increases from one end to the other end.

[0026] In one embodiment, as shown in Figures 2-3 A through hole 13 is formed in the inlet flange pipe 11.

[0027] In one embodiment, as shown in Figures 2-3 The gas outlet assembly 2 includes an outlet elbow 20 fixedly connected to the outlet of the volute 3 at one end, a variable-diameter straight pipe 21 fixedly connected to the other end of the outlet elbow 20, and an outlet flange pipe 22 fixedly connected to the other end of the variable-diameter straight pipe 21.

[0028] In one embodiment, as shown in Figures 2-3 The diameter of the outlet elbow 20 and the variable-diameter straight pipe 21 gradually increases from one end to the other end.

[0029] When the utility model works, first, the vacuum pump works, gas enters through the inlet flange pipe 11 of the gas inlet assembly 1, enters the inlet elbow 10 through the connecting hose 12, then enters the volute 3, then the other end of the volute 3 outputs gas to the outlet elbow 20 of the gas outlet assembly 2, and then outputs to the outlet flange pipe 22 through the variable-diameter straight pipe 21 and outputs to the outside. Since the diameter of the inlet elbow 10, the outlet elbow 20, and the variable-diameter straight pipe 21 gradually increases from one end to the other end, the vacuum pump surge can be effectively reduced, and the pneumatic performance is improved.

[0030] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated. The changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A gas conducting transition tube for a vacuum pump, characterized in that The conversion pipe comprises: an air inlet assembly, an air outlet assembly and a volute; The air inlet assembly is fixedly connected with the top of the volute, and the air outlet assembly is fixedly connected with the outlet of the volute; The air inlet assembly and the air outlet assembly are curved at an angle and arranged in a cross manner; The air inlet assembly comprises: an inlet elbow pipe, one end of which is fixedly connected with the top of the volute; and an inlet flange pipe, one end of which is fixedly connected with the other end of the inlet elbow pipe through a connecting hose; The air outlet assembly comprises: an outlet elbow pipe, one end of which is fixedly connected with the outlet of the volute; a reducing straight pipe, one end of which is fixedly connected with the other end of the outlet elbow pipe; and an outlet flange pipe, one end of which is fixedly connected with the other end of the reducing straight pipe.

2. A gas conducting transition tube for a vacuum pump according to claim 1, characterized in that The diameter of the inlet elbow pipe gradually increases from one end to the other end.

3. The gas conducting tube for vacuum pump according to claim 1, wherein A through hole is formed in the inlet flange pipe.

4. The gas conducting tube for vacuum pump according to claim 1, wherein The diameter of the outlet elbow pipe and the reducing straight pipe gradually increases from one end to the other end.

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