Safe pressure relief oilless vacuum pump

Abstract

The utility model discloses a safe pressure relief oilless vacuum pump relates to oilless vacuum pump technical field, including pump machine, cushion pad, first piston, first spring and air guide bolt, the bottom of pump machine is equipped with cushion pad, the left side of pump machine is equipped with first air filter, the right side of pump machine is equipped with main valve, constant pressure pipe, vacuum filter and different valve, the air guide bolt is equipped with first piston, first spring and air guide bolt, pump machine bottom is equipped with first air filter, pump machine right side is equipped with main valve, constant pressure pipe, vacuum filter and different valve. The main valve is provided with a second piston, an air inlet, a third spring and an air guide bolt, and the different valve is provided with a first piston, a first spring, a pressure relief pull ring and a second air filter. And the second spring has certain pressure, so that the flow rate of the inlet air can be limited, the deformation of the pipeline or the tank body caused by violent flow rate and pressure intensity change is prevented, and the pressure relief safety of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil -free vacuum pump technical field, concretely is a kind of oil -free vacuum pump of safe pressure relief. BACKGROUND

[0002] Oil-free vacuum pump is a kind of mechanical vacuum pump without any oil lubrication to work, it has simple structure, easy operation, convenient maintenance, will not pollute the environment and so on.The oil-free vacuum pump is durable, is vacuum, compression, dual-purpose vacuum pump, is a kind of very extensive application range obtains the basic equipment of vacuum, but the existing oil-free vacuum pump has some deficiencies, for example:

[0003] The oil-free vacuum pump of application No. CN112610452A does not set pressure balance structure, in actual use process, when pressure relief, internal pressure balance is easily broken, deformation occurs in equipment pipeline or tank, leading to breakage even dangerous. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of oil -free vacuum pump of safe pressure relief to solve the problem that the equipment in the above background art is not set pressure balance structure, in actual use process, when pressure relief, internal pressure balance is easily broken, deformation occurs in equipment pipeline or tank, leading to breakage even dangerous.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of oil -free vacuum pump of safe pressure relief, including pump machine, buffer pad, first piston, first spring and gas guide plug;

[0006] The pump machine bottom is installed with buffer pad, the left side of the pump machine is installed with first air filter, the right side of the pump machine is provided with main valve, constant pressure pipe, vacuum filter and valve, the main valve is provided with second piston, air inlet, third spring and gas guide plug, the valve is provided with first piston, first spring, pressure relief pull ring and second air filter.

[0007] As preferred technical scheme of the utility model, the pump machine bottom is fixedly connected with a pair of transverse support fixed bracket structure, and four buffer pads are screw-connected on the pump machine bottom, and the buffer pad bottom is made of rubber material;

[0008] By the above technical scheme, the equipment is screw-connected with four buffer pads on the pump machine bottom, and the buffer pad bottom is made of rubber material, so that effective buffering effect can be achieved, and equipment noise can be reduced.

[0009] As the preferred technical scheme of the utility model, first air filter is connected with the pump left side through thread, three-way pipeline is connected with the pump right side, and the pump right side communicates with the vacuum filter, and the vacuum filter right side is vacuum interface,

[0010] By the above technical scheme, the pump right side is fixedly connected with the three-way pipeline, the air is extracted by the multi-way conducting characteristic of the three-way pipeline, and the internal air pressure of the equipment is stabilized by the multi-way conducting principle.

[0011] As the preferred technical scheme of the utility model, the main valve is communicated above the pump three-way pipeline, the second piston is slidably connected in the main valve, the second piston adopts the claw-shaped structure, the second spring is fixedly connected with the second piston right side, the air inlet is formed in the main valve left side, the third spring is fixedly connected with the air inlet right side, the air guide bolt is fixedly connected with the third spring, the air guide bolt is the conical structure, and the air guide bolt right side starts a circle air hole,

[0012] By the above technical scheme, the second spring is fixedly connected with the second piston right side, the second piston is well adhered with the inner wall of the main valve by the thrust of the second spring, the sealing property of the equipment is guaranteed, the third spring is fixedly connected with the air guide bolt, the one-way valve structure is formed, and the internal air pressure balance is guaranteed.

[0013] As the preferred technical scheme of the utility model, the main valve right side communicates with the constant pressure pipe, the constant pressure pipe is the U-shaped structure, the different valve is communicated above the constant pressure pipe left side, the different valve bottom and the main valve left side form the three-way structure, the first piston is slidably connected in the different valve, the pressure relief pull ring is fixedly connected with the first piston bottom, the first spring is sleeved below the pressure relief pull ring, and the second air filter is threadedly connected with the different valve left side.

[0014] By the above technical scheme, the different valve and the main valve form the communication structure by setting the constant pressure pipe as the U-shaped structure, the internal air pressure balance of the pipeline is guaranteed, and the safety of the equipment pressure relief is guaranteed when the pressure relief pull ring is pulled.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The equipment is threadedly connected with four buffer pads at the pump bottom, and the buffer pad bottom is made of rubber material, so that the effective buffering effect is achieved, and the equipment noise is reduced.

[0017] The equipment is fixedly connected with the three-way pipeline at the pump right side, the air is extracted by the multi-way conducting characteristic of the three-way pipeline, and the internal air pressure of the equipment is stabilized by the multi-way conducting principle.

[0018] The equipment is fixedly connected with the second spring on the right side of the second piston, the second piston is well attached to the inner wall of the main valve by the thrust force generated by the second spring, the sealing property of the equipment is ensured, and the third spring is fixedly connected with the air guide bolt to form a one-way valve structure, so that the balance of the internal air pressure is ensured.

[0019] The equipment sets the constant pressure pipe as a U-shaped structure, the valve is connected with the main valve to ensure the balance of the air pressure in the pipeline, the flow rate of the inlet air is limited due to the pressure of the second spring, the deformation of the pipeline or the tank caused by the sharp change of the flow rate and the pressure is prevented, and the safety of the pressure relief of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a side view structural schematic view of the utility model;

[0021] Figure 2 It is a pump machine and a first air filter structural schematic view of the utility model;

[0022] Figure 3 It is a pump machine and a buffer pad structural schematic view of the utility model;

[0023] Figure 4 It is a valve and a pressure relief ring structural schematic view of the utility model;

[0024] Figure 5 It is an air inlet and a third spring structural schematic view of the utility model;

[0025] Figure 6 It is a second spring and a second piston structural schematic view of the utility model.

[0026] In the drawing: 1, pump machine; 2, buffer pad; 3, first piston; 4, first spring; 5, first air filter; 6, valve; 7, pressure relief ring; 8, constant pressure pipe; 9, vacuum filter; 10, second air filter; 11, main valve; 12, second spring; 13, second piston; 14, air inlet; 15, third spring; 16, air guide bolt. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Please refer to Figure 1 - Figure 6The utility model technical scheme: a safe pressure relief's oil -free vacuum pump, including pump machine 1, buffer pad 2, first piston 3, first spring 4, first air filter 5, valve 6, pressure relief pull ring 7, constant pressure pipe 8, vacuum filter 9, second air filter 10, main valve 11, second spring 12, second piston 13, air inlet 14, third spring 15 and air guide bolt 16,

[0029] Pump machine 1 bottom is provided with buffer pad 2, and a pair of horizontal support fixed support structure is fixedly connected to the bottom of pump machine 1, and four buffer pads 2 are screw-connected to the bottom of pump machine 1, and the bottom of buffer pad 2 is made of rubber material, the equipment is screw-connected with four buffer pads 2 on the bottom of pump machine 1, and the bottom of buffer pad 2 is made of rubber material, so that effective buffering effect can be achieved, and equipment noise is reduced, first air filter 5 is installed on the left side of pump machine 1, main valve 11, constant pressure pipe 8, vacuum filter 9 and valve 6 are arranged on the right side of pump machine 1, first air filter 5 is screw-connected at the air inlet position on the left side of pump machine 1, three-way pipeline is fixedly connected to the right side of pump machine 1, and the right side of pump machine 1 is communicated with vacuum filter 9, and the right side of vacuum filter 9 is a vacuum interface, the equipment is fixedly connected with three-way pipeline on the right side of pump machine 1, air can be extracted by the multi-way conduction characteristics of the three-way pipeline, and the internal air pressure of the equipment is stabilized by the multi-way conduction principle, main valve 11 is provided with second piston 13, air inlet 14, third spring 15 and air guide bolt 16, main valve 11 is communicated above the three-way pipeline of pump machine 1, second piston 13 is slidably connected in main valve 11, second piston 13 adopts a claw-shaped structure, second spring 12 is fixedly connected to the right side of second piston 13, air inlet 14 is formed in the left side of main valve 11, third spring 15 is fixedly connected to the right side of air inlet 14, third spring 15 is fixedly connected with air guide bolt 16, air guide bolt 16 is a conical structure, and a plurality of air inlet holes are formed on the right side of air guide bolt 16, second spring 12 is fixedly connected to the right side of second piston 13, the thrust generated by second spring 12 can make second piston 13 closely adhere to the inner wall of main valve 11, so that the sealing property of the equipment is ensured, third spring 15 and air guide bolt 16 are fixedly connected, so as to form a one-way valve structure, and the internal air pressure is balanced, valve 6 is provided with first piston 3, first spring 4, pressure relief pull ring 7 and second air filter 10, constant pressure pipe 8 is communicated on the right side of main valve 11, constant pressure pipe 8 is a U-shaped structure, and constant pressure pipe 8 is communicated above the left side, valve 6 and main valve 11 form a three-way structure on the left side of constant pressure pipe 8, first piston 3 is slidably connected in valve 6, pressure relief pull ring 7 is fixedly connected to the bottom of first piston 3, first spring 4 is sleeved below pressure relief pull ring 7, and second air filter 10 is screw-connected to the left side of valve 6, constant pressure pipe 8 is arranged in a U-shaped structure, so that valve 6 and main valve 11 form a communication structure, so that the internal air pressure of the pipeline is balanced, and the safety of the equipment is ensured when the pressure relief pull ring 7 is pulled.

[0030] Working principle: when using a safe pressure relief oil-free vacuum pump, first connect various pipeline lines, then during the operation of the equipment, the pressure of the constant pressure pipe 8 and the main valve 11 will be changed to the same state, the constant pressure pipe 8 and the main valve 11 are in a balanced state of communication, the second spring 12 ensures the balance of both ends, when the pressure is too large, the balance will be broken, the second piston 13 starts to move to the right side, air is introduced from the main valve 11 to the air guide bolt 16 position, the third spring 15 will be compressed under the action of high pressure, the excess air is discharged, when the equipment needs to be actively vented, just pull the pressure relief ring 7, air will be sucked from the second air filter 10 position, pass through the second piston 13 and start to enter, at the same time, due to the second spring 12 has a certain pressure, the flow rate of the inlet air will be limited, to prevent the change of flow rate and pressure resulting in the deformation of pipeline or tank.

[0031] Thus a series of work is completed, the content not described in detail in the specification belongs to the prior art known to the person skilled in the art.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A safe pressure relief oil-free vacuum pump, comprising a pump machine (1), a buffer pad (2), a first piston (3), a first spring (4) and a gas guide plug (16); Characterized in that: The bottom of the pump machine (1) is provided with a buffer pad (2), the left side of the pump machine (1) is provided with a first air filter (5), the right side of the pump machine (1) is provided with a main valve (11), a constant pressure pipe (8), a vacuum filter (9) and a different valve (6), the main valve (11) is provided with a second piston (13), an air inlet (14), a third spring (15) and a gas guide plug (16), and the different valve (6) is provided with a first piston (3), a first spring (4), a pressure relief pull ring (7) and a second air filter (10).

2. A safety relief oil-less vacuum pump according to claim 1, characterized in that, The bottom of the pump machine (1) is fixedly connected with a pair of transversely supported fixed support structures, and the bottom of the pump machine (1) is threadedly connected with four buffer pads (2), and the bottom of the buffer pad (2) is made of rubber material.

3. A safety relief oil-less vacuum pump according to claim 2, characterized in that, The first air filter (5) is threadedly connected to the left side of the pump machine (1) at the air inlet position, the three-way pipe is fixedly connected to the right side of the pump machine (1), the right side of the pump machine (1) is communicated with the vacuum filter (9), and the right side of the vacuum filter (9) is a vacuum interface.

4. A safety relief oil-less vacuum pump according to claim 3, characterized in that, The main valve (11) is communicated above the three-way pipe of the pump machine (1), the second piston (13) is slidably connected in the main valve (11), the second piston (13) adopts a claw-shaped structure, the second spring (12) is fixedly connected to the right side of the second piston (13), the air inlet (14) is formed in the left side of the main valve (11), the third spring (15) is fixedly connected to the right side of the air inlet (14), the third spring (15) is fixedly connected with the gas guide plug (16), the gas guide plug (16) is a conical structure, and a plurality of air inlet holes are formed on the right side of the gas guide plug (16).

5. A safety relief oil-less vacuum pump according to claim 4, characterized in that, The constant pressure pipe (8) is communicated to the right side of the main valve (11), the constant pressure pipe (8) is a U-shaped structure, the different valve (6) is communicated above the left side of the constant pressure pipe (8), the different valve (6) and the left side of the main valve (11) form a three-way structure, the first piston (3) is slidably connected in the different valve (6), the pressure relief pull ring (7) is fixedly connected to the bottom of the first piston (3), the first spring (4) is sleeved below the pressure relief pull ring (7), and the second air filter (10) is threadedly connected to the left side of the different valve (6).

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