CN215672718U

CN215672718U - Roots blower with gas reflux device

Info

Publication number: CN215672718U
Application number: CN202122144645.0U
Authority: CN
Inventors: 程凤
Original assignee: Jinan Liming Fan Manufacturing Co ltd
Current assignee: Jinan Liming Fan Manufacturing Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-01-28
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a Roots blower with a gas reflux device, which comprises a case, wherein the bottom of the case is fixedly connected with a fixed seat, the bottom of the fixed seat is fixedly connected with an installation base, and the rear end of the case is provided with a motor connection port; the top fixedly connected with intake pipe of quick-witted case, the bottom fixedly connected with outlet duct of quick-witted case one side, the one end difference fixedly connected with gas transmission pipeline and the pipeline under pressure of quick-witted case are kept away from to intake pipe and outlet duct, the first connecting pipe of one side fixedly connected with of intake pipe outer wall, the top fixedly connected with second connecting pipe of outlet duct, fixedly connected with connection return bend between first connecting pipe and the second connecting pipe. According to the utility model, through designing the gas backflow pipeline, the intelligent pressure regulating valve and the emergency manual valve, gas backflow can be realized when the pressure of the gas outlet pipeline is overlarge, and the condition of pipe explosion or pipeline gas leakage is prevented, so that the integral working efficiency is greatly improved.

Description

Roots blower with gas reflux device

Technical Field

The utility model relates to the field of Roots blowers, in particular to a Roots blower with a gas reflux device.

Background

Roots blowers are positive displacement rotary blowers, and such compressors maintain the rotors in mesh by virtue of synchronizing gears at the axial ends of the rotors. Each concave curved surface part on the rotor and the inner wall of the cylinder form a working volume, gas is taken away from the gas suction port in the rotation process of the rotor, and when the rotor moves to the position near the exhaust port and is communicated with the exhaust port, the pressure in the working volume is suddenly increased due to the backflow of the gas with higher pressure, and then the gas is conveyed to the exhaust channel. The two rotors do not contact with each other, and the sealing is realized by a tightly controlled gap between the two rotors, so that the discharged gas is not polluted by lubricating oil. The most important characteristics are that when the pressure is regulated in the allowable range, the flow rate is slightly changed, the pressure selection range is very wide, and it has the characteristics of forced gas transmission, and when it is used, the medium does not contain oil, and its structure is simple, maintenance is convenient, service life is long and vibration of whole machine is small.

When the roots blower is used for conveying gas, the gas conveying pipeline is easily damaged due to the fact that the pressure of the conveying gas is too large, the pressure release valve is additionally arranged on the conveying pipeline in the traditional coping mode, although the processing mode can play a role in pressure release, when conveying inflammable and explosive gas or harmful gas, the processing mode easily causes environmental pollution, and even safety accidents are easily caused.

It is therefore desirable to provide a roots blower with a gas return to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas conveying pipeline is easily damaged due to overlarge pressure of conveying gas, and the conventional coping mode is to add a pressure release valve on the conveying pipeline, so that although the processing mode can play a role of pressure release, the processing mode easily causes environmental pollution and even easily causes safety accidents when conveying flammable and explosive gases or harmful gases.

In order to solve the technical problems, the utility model adopts a technical scheme that: the Roots blower with the gas reflux device comprises a case, wherein the bottom of the case is fixedly connected with a fixed seat, the bottom of the fixed seat is fixedly connected with an installation base, and the rear end of the case is provided with a motor connection port;

the intelligent pressure regulating device comprises a case, a gas inlet pipe, a gas outlet pipe, a first connecting pipe, a second connecting pipe, a connecting bent pipe and an intelligent pressure regulating valve, wherein the top of the case is fixedly connected with the gas inlet pipe, the bottom of one side of the case is fixedly connected with the gas outlet pipe, one ends of the gas inlet pipe and the gas outlet pipe, which are far away from the case, are respectively and fixedly connected with the gas transmission pipeline and the pressure pipeline, one side of the outer wall of the gas inlet pipe is fixedly connected with the first connecting pipe, the top of the gas outlet pipe is fixedly connected with the second connecting pipe, the connecting bent pipe is fixedly connected between the first connecting pipe and the second connecting pipe, and one end of the connecting bent pipe, which is close to the first connecting pipe, is provided with the intelligent pressure regulating valve;

the intelligent pressure regulating valve comprises a pipeline connecting valve body, wherein connecting ports are formed in two ends of the pipeline connecting valve body, a power supply interface is formed in one side of the outer wall of the pipeline connecting valve body, a control panel is arranged at the top of the pipeline connecting valve body, and a display screen, a plurality of operation keys and an alarm flashing lamp are arranged at the top of the control panel;

and an emergency manual valve is installed at one end of the connecting bent pipe close to the second connecting pipe.

Preferably, the case and the fixing seat are of an integrated structure, and the case and the fixing seat of the integrated structure design are firmer and more stable in structure.

Preferably, the air inlet pipe and the air outlet pipe are fixed with the case through welding, sealing can be guaranteed, and meanwhile, connection firmness can be guaranteed.

Preferably, the air inlet pipe and the air outlet pipe are respectively communicated with the air inlet and the air outlet of the case, so that external air can enter the case through the air inlet pipe and then be discharged through the air outlet pipe.

Preferably, the centers of the two connectors are provided with internal threads, so that the pipeline connecting valve body and the connecting bent pipe can be conveniently and fixedly installed.

Preferably, the air inlet pipe and the air transmission pipeline, the air outlet pipe and the pressure pipeline, the first connecting pipe and the connecting bent pipe, and the second connecting pipe and the opposite end of the connecting bent pipe are fixedly connected with connecting flanges.

Preferably, the air inlet pipe and the gas transmission pipeline, the air outlet pipe and the pressure pipeline, the first connecting pipe and the connecting bent pipe, and the second connecting pipe and the connecting bent pipe are fixedly connected through a plurality of groups of fixing bolts, and the plurality of groups of fixing bolts are fixedly connected, so that the connection stability can be ensured, and meanwhile, the installation and the disassembly are convenient.

The utility model has the following beneficial effects:

1. by designing the intelligent pressure regulating valve, when the gas pressure in the pipeline is overlarge, backflow regulation can be automatically carried out;

2. according to the emergency valve, the emergency valve is simple in design, and can be closed in time in an emergency, so that accidents are prevented, and the occurrence of safety accidents is reduced;

3. according to the utility model, through designing the gas backflow pipeline, the intelligent pressure regulating valve and the emergency manual valve, gas backflow can be realized when the pressure of the gas outlet pipeline is overlarge, and the condition of pipe explosion or pipeline gas leakage is prevented, so that the integral working efficiency is greatly improved.

Drawings

FIG. 1 is a main view of the present invention;

FIG. 2 is a side view structural diagram of the present invention;

fig. 3 is a schematic structural diagram of the intelligent pressure regulating valve of the present invention.

In the figure: 1. a chassis; 2. a fixed seat; 3. installing a base; 4. an air inlet pipe; 5. an air outlet pipe; 6. a gas pipeline; 7. a pressure line; 8. a first connecting pipe; 9. a second connecting pipe; 10. connecting a bent pipe; 11. an intelligent pressure regulating valve; 1101. the pipeline is connected with the valve body; 1102. a connecting port; 1103. a power interface; 1104. a control panel; 1105. a display screen; 1106. operating a key; 1107. an alarm flashing light; 12. an emergency manual valve; 13. the motor is connected with the port.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1 and 2, a roots blower with a gas backflow device comprises a case 1, wherein a fixed seat 2 is fixedly connected to the bottom of the case 1, the case 1 and the fixed seat 2 are of an integrated structure, the case 1 and the fixed seat 2 are of the integrated structure, the integrated structure is firm and stable, an installation base 3 is fixedly connected to the bottom of the fixed seat 2, and a motor connection port 13 is arranged at the rear end of the case 1;

the top of the case 1 is fixedly connected with an air inlet pipe 4, the bottom of one side of the case 1 is fixedly connected with an air outlet pipe 5, and the air inlet pipe 4 and the air outlet pipe 5 are both fixed with the case 1 through welding, so that sealing can be guaranteed, and meanwhile, connection firmness can be guaranteed; the air inlet pipe 4 and the air outlet pipe 5 are respectively communicated with the air inlet and the air outlet of the case 1, so that external air can enter the case 1 through the air inlet pipe 4 and then is discharged through the air outlet pipe 5;

as shown in fig. 1, one ends of an air inlet pipe 4 and an air outlet pipe 5, which are far away from a chassis 1, are respectively and fixedly connected with an air transmission pipeline 6 and a pressure pipeline 7, one side of the outer wall of the air inlet pipe 4 is fixedly connected with a first connecting pipe 8, the top of the air outlet pipe 5 is fixedly connected with a second connecting pipe 9, a connecting bent pipe 10 is fixedly connected between the first connecting pipe 8 and the second connecting pipe 9, and one end of the connecting bent pipe 10, which is close to the first connecting pipe 8, is provided with an intelligent pressure regulating valve 11; the opposite ends of the air inlet pipe 4 and the air transmission pipeline 6, the air outlet pipe 5 and the pressure pipeline 7, the first connecting pipe 8 and the connecting bent pipe 10, and the second connecting pipe 9 and the connecting bent pipe 10 are fixedly connected with connecting flanges; intake pipe 4 and gas transmission pipeline 6, outlet duct 5 and pipeline under pressure 7, first connecting pipe 8 and connecting bend 10, second connecting pipe 9 and connecting bend 10 all are through multiunit fixing bolt fixed connection, adopt multiunit fixing bolt fixed connection, can guarantee the stability of connecting, also be convenient for simultaneously the installation dismantlement.

As shown in fig. 3, the intelligent pressure regulating valve 11 includes a pipeline connection valve body 1101, connection ports 1102 are respectively formed at two ends of the pipeline connection valve body 1101, a power supply interface 1103 is formed at one side of the outer wall of the pipeline connection valve body 1101, a control panel 1104 is arranged at the top of the pipeline connection valve body 1101, and a display screen 1105, a plurality of operation keys 1106 and an alarm flashing lamp 1107 are arranged at the top of the control panel 1104; the centers of the two connecting ports 1102 are both provided with internal threads, so that the pipeline connecting valve body 1101 and the connecting elbow 10 can be conveniently installed and fixed.

An emergency manual valve 12 is arranged at one end of the connecting bent pipe 10 close to the second connecting pipe 9.

When the emergency manual valve is used, gas enters the case 1 from the gas transmission pipeline 6 and the gas inlet pipe 4, after the gas is accelerated and pressurized by the Roots blower, the gas enters the pressure pipeline 7 from the gas outlet pipe 5, when the internal pressure of the pressure pipeline 7 is overlarge, part of the gas can flow back into the gas inlet pipe 4 through the second connecting pipe 9, the connecting bent pipe 10 and the first connecting pipe 8, the intelligent pressure regulating valve 11 is installed at one end of the connecting bent pipe 10 close to the first connecting pipe 8, the intelligent pressure regulating valve 11 is a one-way valve, and can be automatically opened only when the pressure in the connecting bent pipe 10 exceeds a preset value, so that the gas in the connecting bent pipe 10 can automatically flow back into the gas inlet pipe 4, the emergency manual valve 12 is installed at one end of the connecting bent pipe 10 close to the second connecting pipe 9, and the emergency manual valve 12 can be used in an emergency situation.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a roots blower with gas reflux unit, includes quick-witted case (1), its characterized in that: the bottom of the case (1) is fixedly connected with a fixed seat (2), the bottom of the fixed seat (2) is fixedly connected with an installation base (3), and the rear end of the case (1) is provided with a motor connection port (13);

the air inlet pipe (4) is fixedly connected to the top of the case (1), the air outlet pipe (5) is fixedly connected to the bottom of one side of the case (1), the end, away from the case (1), of the air inlet pipe (4) and the end, away from the case (1), of the air outlet pipe (5) are fixedly connected with the air delivery pipeline (6) and the pressure pipeline (7) respectively, a first connecting pipe (8) is fixedly connected to one side of the outer wall of the air inlet pipe (4), a second connecting pipe (9) is fixedly connected to the top of the air outlet pipe (5), a connecting bent pipe (10) is fixedly connected between the first connecting pipe (8) and the second connecting pipe (9), and an intelligent pressure regulating valve (11) is installed at one end, close to the first connecting pipe (8), of the connecting bent pipe (10);

the intelligent pressure regulating valve (11) comprises a pipeline connecting valve body (1101), connecting ports (1102) are formed in two ends of the pipeline connecting valve body (1101), a power supply interface (1103) is formed in one side of the outer wall of the pipeline connecting valve body (1101), a control panel (1104) is arranged on the top of the pipeline connecting valve body (1101), and a display screen (1105), a plurality of operation keys (1106) and an alarm flashing lamp (1107) are arranged on the top of the control panel (1104);

and an emergency manual valve (12) is arranged at one end of the connecting bent pipe (10) close to the second connecting pipe (9).

2. A roots blower provided with a gas return means according to claim 1, wherein: the case (1) and the fixed seat (2) are of an integrated structure.

3. A roots blower provided with a gas return means according to claim 1, wherein: the air inlet pipe (4) and the air outlet pipe (5) are fixed with the case (1) through welding.

4. A roots blower provided with a gas return means according to claim 1, wherein: the air inlet pipe (4) and the air outlet pipe (5) are respectively communicated with an air inlet and an air outlet of the case (1).

5. A roots blower provided with a gas return means according to claim 1, wherein: the centers of the two connecting ports (1102) are provided with internal threads.

6. A roots blower provided with a gas return means according to claim 1, wherein: intake pipe (4) and gas transmission pipeline (6), outlet duct (5) and pipeline under pressure (7), first connecting pipe (8) and connecting bend (10), second connecting pipe (9) and the equal fixedly connected with flange of relative one end of connecting bend (10).

7. A roots blower provided with a gas return means according to claim 6, wherein: the air inlet pipe (4) is fixedly connected with the gas transmission pipeline (6), the air outlet pipe (5) is fixedly connected with the pressure pipeline (7), the first connecting pipe (8) is fixedly connected with the connecting bent pipe (10), and the second connecting pipe (9) is fixedly connected with the connecting bent pipe (10) through a plurality of groups of fixing bolts.