Three-blade Roots blower

Abstract

The utility model discloses a three-blade Roots blower which comprises a blower body installed on a base, a filter and a cooling coil are arranged on a gas inlet pipe of the blower body, and the three-blade Roots blower is used for eliminating smoke particles in acrylic ester waste gas and cooling the acrylic ester waste gas to slow down polymerization reaction. The fan body drives the rotor through the motor belt, the belt is further provided with a tightness adjusting device, the tightness adjusting device comprises an installation base and an adjusting disc, the installation base and the adjusting disc are rotatably arranged in an end face ratchet-ratchet matching mode, an adjusting roller matched with the belt is eccentrically arranged on the adjusting disc, and the adjusting roller can make contact with the belt by rotating the adjusting disc. The transmission length of the belt can be increased by continuously rotating, so that the tightness of the belt is adjusted; a boss-elastic clamping jaw quick connecting structure is further arranged between the adjusting disc and the mounting base, the elastic clamping jaw is hinged to the sliding sleeve and the connecting rod in a staggered mode, and the adjusting disc can be quickly replaced in cooperation with a spring reset mechanism of the sliding sleeve and the connecting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roots blower, specifically relates to a three blade roots blower. BACKGROUND

[0002] Three blade roots blower is a kind of rotary machine, can be used as positive pressure or negative pressure device, be configured with two three blade rotors in its cavity, suction inlet and discharge outlet are opened on the both sides of cavity, by the effect of a pair of synchronous gears, can make two rotors rotate in opposite directions, and rely on the mutual meshing of two rotors, make suction inlet and discharge outlet mutually isolated, to push the gas in the cavity, to realize the purpose of blowing. In the production process of acrylate, three blade roots blower is usually used to extradite waste gas into collection and processing device, but the temperature of waste gas is higher and can carry solid particles, acrylate also has polymerization characteristics, very easy to adhere on the surface of its fan blade, damage roots blower, therefore it is necessary to improve the above problems.

[0003] The utility model discloses a kind of three blade roots blowers of being convenient for maintenance, limit pin is extracted from bushing by lifting handle, release the limiting of filter screen by limit pin and make spring connected steel ball is fixed into second arc slot, limit pin can be extracted from limit slot, and filter screen is taken out from the inside of air inlet pipe. In addition, a kind of roots blower click heat dissipation structure is also disclosed, but the structure still cannot meet the demand of acrylate waste gas. SUMMARY

[0004] The utility model aims at improving three blade roots blower, make it adapt to the high temperature of acrylate production waste gas, polymerization characteristics, reduce the probability of damage maintenance.

[0005] To achieve the above object, the technical scheme provided by the utility model is as follows:

[0006] A kind of three blade roots blower, including base, is provided with on base:

[0007] Fan body, the one side of the fan body is provided with air inlet pipe, and the other side is provided with air outlet pipe;

[0008] Motor, the motor is arranged in the inside of fan body, and the output end of motor is provided with pulley, and pulley is connected with fan rotor by belt;The fan rotor includes the synchronous gear of mutual meshing, and at least one group of blades is connected to synchronous gear;

[0009] The pre-treatment assembly comprises a filter arranged radially along the air inlet pipe and a cooling coil arranged outside the air inlet pipe, the cooling coil is connected with a compressor, a pressurizing pump and a water pipe, the filter comprises an inner cylinder and an outer cylinder, the inner cylinder is densely provided with openings, the bottom surface of the inner cylinder abuts against the bottom surface of the outer cylinder, and a filter sheet is arranged between the inner cylinder and the outer cylinder.

[0010] Further, the filter is detachably provided with a cover body through threads, the cover body is fixedly connected with the inner cylinder, and a rotating handle is arranged outside the cover body.

[0011] Further, the belt is provided with a tightness adjusting assembly, the tightness adjusting assembly comprises a mounting seat fixedly arranged to the fan body, the mounting seat is rotationally provided with an adjusting disc, an adjusting roller is eccentrically arranged on the adjusting disc, the adjusting disc is coaxially rotationally arranged with the mounting seat and connected through an end face ratchet and a ratchet tooth matched with the end face ratchet, and the adjusting roller is matched with the belt.

[0012] Further, the belt transmission direction is opposite to the rotating direction of the end face ratchet.

[0013] Further, a quick connecting structure is further arranged between the mounting seat and the adjusting disc, the quick connecting structure comprises a boss arranged at the center of the adjusting disc, and the mounting seat is provided with an elastic clamping jaw matched with the boss.

[0014] Further, a connecting rod is arranged between the elastic clamping jaw and the mounting seat, the elastic clamping jaw is hinged to one end of the connecting rod, the connecting rod is provided with a sliding sleeve outside, the connecting rod is provided with a flange, the sliding sleeve is provided with a cavity matched with the flange inside, a spring is arranged in the cavity along the axial direction of the connecting rod, the elastic clamping jaw is hinged to the sliding sleeve, and the two hinged positions of the elastic clamping jaw and the connecting rod and the sliding sleeve are arranged in a staggered manner.

[0015] Further, the air outlet pipe is provided with an air pressure sensor and a temperature sensor.

[0016] Further, the air outlet pipe is provided with an exhaust muffler through an elastic joint.

[0017] Further, the air outlet pipe is connected with a one-way valve, an emptying valve and a gate valve.

[0018] The advantages and beneficial effects of the utility model lie in:

[0019] 1. The filter sheet between the inner cylinder and the outer cylinder effectively filters the polymerization characteristic gas and smoke dust in the air inlet, and the air inlet pipe is provided with a cooling coil to protect the fan from the damage of acrylic acid waste gas.

[0020] 2. The tightness adjusting assembly composed of the mounting seat, the adjusting disc and the adjusting roller makes the adjustment of the belt tension more convenient and fast.

[0021] 3. The quick connection structure between the mounting seat and the adjusting disc, comprising a boss arranged at the center of the adjusting disc and an elastic clamping jaw arranged on the mounting seat. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic diagram of the filter of the utility model;

[0023] Fig. 2 is a structural schematic diagram of the filter of the utility model;

[0024] Fig. 3 is a structural schematic diagram of the tightness adjusting assembly of the utility model;

[0025] Fig. 4 is a structural schematic diagram of the quick connection structure of the utility model;

[0026] In the drawings:

[0027] 10 - base, 11 - fan body, 12 - air inlet pipe, 13 - air outlet pipe, 14 - fan rotor, 20 - filter, 21 - inner cylinder, 22 - outer cylinder, 23 - opening, 24 - filter sheet, 25 - cover body, 26 - rotating handle, 27 - cooling coil, 30 - pulley, 31 - belt, 32 - mounting seat, 33 - adjusting disc, 34 - adjusting roller, 35 - end face ratchet, 36 - ratchet, 40 - boss, 41 - elastic clamping jaw, 42 - connecting rod, 43 - sliding sleeve, 44 - flange, 45 - spring, 50 - air pressure sensor, 51 - temperature sensor, 60 - elastic joint, 61 - exhaust muffler, 70 - one-way valve, 71 - emptying valve, 72 - gate valve. DETAILED DESCRIPTION

[0028] The specific implementation of the utility model will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model. EXAMPLE

[0029] Please refer to Figs. 1-4The application discloses a three-leaf Roots blower, which comprises a base 10, a blower body 11 arranged on the base 10, an air inlet pipe 12 arranged on one side of the blower body 11, an air outlet pipe 13 arranged on the other side of the blower body 11, a motor arranged in the blower body 11, a belt pulley 30 connected to an output end of the motor, a blower rotor connected to the belt pulley 30 through a belt 31, wherein the blower rotor comprises synchronous gears which are meshed with each other, and each synchronous gear is connected to a group of blades, a filter 20 is arranged along the air inlet pipe 12 in a radial direction, the air inlet pipe 12 is externally provided with cooling coils 27 connected to a compressor, a pressure pump and a water pipe, the filter 20 comprises an inner cylinder 21 and an outer cylinder 22, the inner cylinder 21 is densely provided with openings 23, the bottom surface of the inner cylinder 21 is attached to the bottom surface of the outer cylinder 22, a filter sheet 24 is arranged between the inner cylinder 21 and the outer cylinder 22, the filter 20 is detachably provided with a cover 25 through screw threads, the cover 25 is fixedly connected to the inner cylinder 21, and a rotating handle 26 is welded to the outside of the cover 25.

[0030] The belt 31 is provided with a tightness adjusting assembly, which comprises a mounting seat 32 fixedly arranged on the blower body 11, an adjusting disc 33 rotationally arranged on the mounting seat 32, two adjusting rollers 34 rotationally arranged on the adjusting disc 33 in a spaced and eccentric manner, and the adjusting disc 33 is coaxial with the mounting seat 32 and connected through an end face ratchet wheel 35 and a ratchet 36 matched with the end face ratchet wheel 35. The adjusting disc 33 is rotated to drive the adjusting roller 34 to contact the belt 31, and the adjusting roller 24 is continuously rotated to expand the belt 31, so that the tightness is adjusted.

[0031] The mounting seat 32 and the adjusting disc 33 are further provided with a quick connecting structure, which comprises a boss 40 arranged at the center of the adjusting disc 33, and the mounting seat 32 is provided with an elastic clamping jaw 41 matched with the boss 40. A connecting rod 42 is arranged between the mounting seat 32 and the adjusting disc 33, the elastic clamping jaw 41 is hinged to one end of the connecting rod 42, the connecting rod 42 is provided with a sliding sleeve 43, the connecting rod 42 is provided with a flange 44, the sliding sleeve 43 is provided with a cavity matched with the flange 44, the cavity is provided with a spring 45 arranged in an axial direction of the connecting rod 42, the elastic clamping jaw 41 is hinged to the sliding sleeve 43, and the elastic clamping jaw 41 is hinged to the connecting rod 42 and the sliding sleeve 43 in a staggered manner.

[0032] The air outlet pipe 13 is provided with an air pressure sensor 50 and a temperature sensor 51, the air outlet pipe 13 is provided with an exhaust muffler 61 through an elastic joint 60, and the air outlet pipe 13 is further connected with a one-way valve 70, an emptying valve 71 and a gate valve 72.

[0033] Working principle:

[0034] Air or gas enters the fan through the air inlet pipe, first passes through the filter, and then passes through the filter disc and the inner cylinder in turn, effectively filtering out the fine particles of smoke dust in the air inlet, and the filter disc is preferably of high-efficiency filtering grade. The air inlet pipe is provided with a cooling coil outside, which cools the air inlet and reduces the gas temperature to below 40 degrees Celsius, improving the operating efficiency and stability of the fan. The motor is connected to the power supply to drive the fan rotor to rotate, and the rotor is composed of synchronously meshing gears, each gear connecting a group of blades. The rotation of the gear drives the movement of the blade, which rotates in the fan body, compresses and pushes the gas entering the air inlet pipe to the air outlet pipe, realizing the compression and transportation of the gas. The tightness of the belt is adjusted by the adjusting assembly. When the adjusting disc rotates, it drives the adjusting roller, and at least two adjusting rollers are arranged apart and contact one side of the belt, and the tightness of the belt is adjusted by the rotation of the adjusting roller, ensuring the stability and efficiency of the transmission system. The adjusting disc and the mounting seat are matched with the end face ratchet and ratchet in the opposite direction of the belt transmission direction, to prevent the belt from rotating unstably or detaching from the adjusting roller when rotating. The mounting seat and the adjusting disc are provided with a quick connection structure, including a boss in the center of the adjusting disc and a elastic clamp jaw on the mounting seat, the sliding sleeve drives the hinged elastic clamp jaw to loosen, and the spring resets the sliding sleeve to clamp the elastic clamp jaw, and the elastic clamp jaw clamps the boss to complete the quick connection, facilitating the quick disassembly and replacement of the adjusting disc. The air pressure and temperature sensor is used to detect the air outlet condition, and the elastic joint and the exhaust muffler are used to reduce the noise generated by the fan. The one-way valve is used to prevent the backflow of high-pressure gas caused by the reverse rotation of the fan from entering the fan and causing damage. The emptying valve is used to prevent the fan from being damaged when starting under load. The gate valve is used for individual maintenance of a single fan when multiple fans are working simultaneously.

[0035] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A three lobe roots blower comprising a base, characterized in that: The base is provided with: The fan body is provided with an air inlet pipe on one side and an air outlet pipe on the other side; The motor is provided inside the fan body, and the output end of the motor is provided with a belt pulley, the belt pulley is connected with a fan rotor through a belt, the fan rotor comprises synchronizing gears that are engaged with each other, and the synchronizing gears are connected with blades; The pretreatment assembly comprises a filter provided radially along the air inlet pipe and a cooling coil provided outside the air inlet pipe, the cooling coil is connected with a compressor, a pressurizing pump and a water pipe, the filter comprises an inner cylinder and an outer cylinder, the inner cylinder is densely provided with openings, the bottom surface of the inner cylinder abuts against the bottom surface of the outer cylinder, and a filter sheet is arranged between the inner cylinder and the outer cylinder.

2. The triple lobe Roots blower of claim 1 wherein: The filter is detachably provided with a cover through threads, the cover is fixedly connected with the inner cylinder, and a rotating handle is provided outside the cover.

3. The triple lobe Roots blower of claim 1 or 2, wherein: The belt is provided with a tightness adjusting assembly, the tightness adjusting assembly comprises a mounting seat fixedly provided to the fan body, the mounting seat is rotationally provided with an adjusting disc, the adjusting disc is eccentrically rotationally provided with an adjusting roller, the adjusting disc is coaxially rotationally provided with the mounting seat and connected through an end face ratchet and a ratchet tooth matched with the end face ratchet, and the adjusting roller is matched with the belt.

4. The triple lobe Roots blower of claim 3 wherein: The transmission direction of the belt is opposite to the rotation direction of the end face ratchet.

5. The triple lobe Roots blower of claim 3 wherein: A quick connecting structure is further arranged between the mounting seat and the adjusting disc, the quick connecting structure comprises a boss provided at the center of the adjusting disc, and the mounting seat is provided with an elastic clamp jaw matched with the boss.

6. The triple lobe Roots blower of claim 5 wherein: A connecting rod is arranged between the elastic clamp jaw and the mounting seat, one end of the elastic clamp jaw is hinged to the connecting rod, the connecting rod is provided with a sliding sleeve outside, the connecting rod is provided with a flange, the sliding sleeve is provided with a cavity matched with the flange inside, a spring is arranged in the cavity, the elastic clamp jaw is hinged to the sliding sleeve, and the elastic clamp jaw is arranged in dislocation at two hinged positions of the connecting rod and the sliding sleeve.

7. The triple lobe Roots blower of claim 1 wherein: The air outlet pipe is provided with an air pressure sensor and a temperature sensor.

8. The triple lobe Roots blower of claim 1 wherein: The air outlet pipe is provided with an exhaust muffler through an elastic joint.

9. The triple lobe Roots blower of claim 1 wherein: The air outlet pipe is connected with a one-way valve, an emptying valve and a gate valve.

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