CN212091598U

CN212091598U - Self-cleaning device for air suction filter of blowing type suction dryer

Info

Publication number: CN212091598U
Application number: CN202020313463.4U
Authority: CN
Inventors: 黄全志
Original assignee: Zhangzhou Zhendong Machine Co ltd
Current assignee: Zhangzhou Zhendong Machine Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-08
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a desiccator technical field discloses a self-cleaning device of filter is breathed in to blowing-type suction dryer, and its A, B tower upper end is connected with air intlet, gas vent respectively, and air outlet is connected to the lower extreme, and A, B tower lower extreme is located to the pressure release mouth, and the export of air-blower is connected with A, B tower lower extreme, and the air-blower entry is established two parallel pipelines and is connected with the pressure release mouth of A, B tower, is equipped with the air inlet on the parallel pipeline respectively, and the filter is established to the air inlet. The utility model realizes replacement and replacement without shutdown under the condition of blockage by arranging the double filters; and the parallel loop is connected with the pressure relief opening to back flush the filter, so that the gas is high in cleaning degree and has certain pressure, an air hammer effect is formed during flushing, the cleaning effect is good, waste caused by pressure relief is fully utilized, and the environmental protection performance of equipment is improved. The equipment is combined with a control system through a pneumatic butterfly valve to realize intelligent control, and automatic switching or automatic cleaning of the filter is realized at regular time.

Description

Self-cleaning device for air suction filter of blowing type suction dryer

Technical Field

The utility model relates to a desiccator technical field, in particular to self-cleaning device of filter is breathed in to fan-type blotter.

Background

The compressed air is widely applied to the construction of field or non-fixed workplaces in the industries of highway tunnels, petroleum pipelines, chemical engineering, mines, steel and the like. Because the air machine discharges low-quality gas containing a large amount of water vapor, dust and oil stain, the requirement for high gas quality cannot be met. Therefore, the compressed air needs to be purified and dried. The adsorption dryer is a common air purification device, and achieves a drying effect through pressure change. Since the capacity of air to contain water vapor is inversely proportional to the pressure, a part of the dried air (called regeneration air) is decompressed and expanded to atmospheric pressure, the pressure change makes the expanded air become drier, then the expanded air flows through a drying agent layer (namely a drying tower which absorbs enough water vapor) which is not communicated with the air flow to be regenerated, and the dried regeneration air sucks out the moisture in the drying agent and carries the drying agent out of the dryer to achieve the purpose of dehumidification. The two towers work circularly, do not need a heat source, and continuously provide dry compressed air for a user air system.

In the regeneration process of the dryer, in order to save the finished gas, the dryer is heated and desorbed through external air, but the external air contains a large amount of impurities, so the external air is filtered, a single filter is arranged at the front end of the air blower, and the filter is easy to block after being used for a long time, thereby causing serious interlocking faults of the machine. Patent 201521102122.8 discloses a self-cleaning parallel filtration system, including a detergent tank, a filter, a standby filter and a waste liquid receiving tank, material input pipe and material output pipe are respectively arranged on both sides of the filter and the standby filter, one end of the material input pipe of the filter and the standby filter is connected, and is connected with a material input main pipe, a second valve is arranged on the material input main pipe, a detergent circulation pipe and a first standby pipe, one end of the material output pipe of the filter and the standby filter is connected, and is connected with a material output main pipe, a sixth valve is arranged on the material output main pipe, a waste liquid circulation pipe and a second standby pipe, and the material input main pipe and the material output main pipe are both connected with a pressure measuring pipe; the utility model discloses a having realized switching to reserve filter under the filter saturation jam condition, having carried out incessant filtration, guarantee simultaneously to filter and automatically cleaning process integration, do not take place to leak and pollute, improve the security, energy saving and cost. Although this filtration system can solve the filter and block up the change problem, can't change another filter in changing the use, change after needing equipment to stop, self-cleaning process also needs equipment to shut down the back just can realize moreover, and to large-scale compressed air purification equipment, need incessant air supply that provides, shut down then can cause other equipment can't use, seriously influence production, bring the puzzlement for actual production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a self-cleaning device of filter of breathing in that the institutional advancement is little, convenient operation, clean effectual is provided.

In order to solve the above problem, the utility model adopts the following technical scheme:

self-cleaning device of filter is inhaled to blast type suction dryer, including A tower, B tower, air intlet, air outlet, gas vent, pressure release mouth and air-blower, air intlet is connected with A tower and B tower upper end respectively, and air outlet connects A tower and B tower lower extreme respectively, and the gas vent is connected with A tower and B tower upper end respectively, A tower and B tower lower extreme are located respectively to the pressure release mouth, the export of air-blower is connected with A tower and B tower lower extreme respectively, the air-blower entrance is equipped with the pressure release mouth of two parallel pipelines and A tower and B tower and is connected, be equipped with the air inlet on the two parallel pipelines respectively, the air inlet all is equipped with the filter, be equipped with the control valve between the port of each connecting tube way respectively.

The pressure relief opening is also provided with a silencer communicated with the outside and is controlled by a pneumatic butterfly valve.

And a heater is arranged at the outlet of the blower.

And control valves between the air outlet and the blower outlet and between the connecting pipelines of the tower A and the tower B are one-way valves, and pneumatic butterfly valves are arranged between ports of other pipelines.

The utility model has the advantages that: the utility model realizes replacement and replacement without shutdown under the condition of blockage by arranging the double filters; and set up parallelly connected return circuit and pressure release mouth and be connected, utilize pressure release gas to carry out the back flush to the filter, this flushing gas is handled clean degree height through A tower or B tower, and pressure release gas possesses certain pressure, forms the air hammer effect when washing, and the cleaning performance is good, and the waste that the make full use of pressure release caused again promotes the environmental protection performance of equipment. The equipment is combined with a control system through a pneumatic butterfly valve to realize intelligent control, and automatic switching or automatic cleaning of the filter is realized at regular time.

Drawings

Fig. 1 is a schematic structural view of the self-cleaning device of the suction filter of the blower type suction dryer of the present invention.

Fig. 2 is a schematic view of the regeneration heating process of the vacuum dryer of the present invention.

Fig. 3 is a schematic diagram of the self-cleaning process of the filter of the present invention.

Detailed Description

Referring to fig. 1-3, a self-cleaning device for an air suction filter of a blowing type suction dryer comprises a tower a 1, a tower B2, an air inlet 3, an air outlet 4, an exhaust port 5, a pressure relief port 6 and an air blower 7, wherein the air inlet 3 is respectively connected with the upper ends of the tower a 1 and the tower B2, the air outlet 4 is respectively connected with the lower ends of the tower a 1 and the tower B2, the exhaust port 5 is respectively connected with the upper ends of the tower a 1 and the tower B2, the pressure relief port 6 is respectively arranged at the lower ends of the tower a 1 and the tower B2, the outlet of the air blower 7 is respectively connected with the lower ends of the tower a 1 and the tower B2, two parallel pipelines 71 are arranged at the inlet of the air blower 7 and are connected with the pressure relief port 6 of the tower a 1 and the tower B2, an air inlet 72 is respectively arranged on each parallel pipeline 71, the air.

The pressure relief opening 6 is also provided with a silencer 61 communicated with the outside and is controlled by a pneumatic butterfly valve.

A heater 74 is arranged at the outlet of the blower 7.

And control valves between the air outlet 4 and the outlet of the blower 7 and connecting pipelines of the tower A1 and the tower B2 are one-way valves, and pneumatic butterfly valves are arranged between ports of other pipelines.

When the pneumatic butterfly valve is used, the pneumatic butterfly valve is connected with a control system of the suction dryer, the control mode of the control system is set, and the following control mode can be set, namely, the pneumatic butterfly valve button is manually controlled by the control system to switch the filter 73 under the condition of blockage according to actual needs, and the blocked filter 73 is cleaned; secondly, the filter 73 is automatically switched after a certain time of working is set, and the filter 73 is cleaned; third, when the pressure is released by switching the A, B towers each time, the filter 73 is switched each time, and the cleaning operation is performed. It is also possible to set, according to the pressure required for cleaning and in combination with the pressure at the time of pressure release, whether to perform pressure release by the muffler 61 first or to perform backwashing of the filter 73 first. It is also possible to set the filter 73 to a point-and-place cleaning.

Equipment operation process, adsorption: the wet air enters the A tower 1 through a valve V1, is dried and is supplied to customers through an air outlet 4 through a valve V11.

Regeneration of tower B, heating: the suction filter F1 extracts the atmosphere, enters the blower 7 through the V13 valve, passes through the V10 valve through the heater 74, enters the B tower 2 for heating and regeneration, and finally is discharged through the V4 valve;

and (3) cooling by blowing: part of the product gas is taken to enter a B tower 2 through a V17 regeneration valve and then enters a V6 valve for blowing cooling regeneration, and finally is discharged through a V4 valve.

Self-cleaning: if the filter F1 is blocked by dust, the V13 valve is closed, the F2 is opened, the dust enters the blower 7 through the V14 valve, flows through the V10 valve through the heater 74, enters the B tower 2 for heating and regeneration, and is discharged through the V4 valve finally, and when the two towers are switched, the air discharged from the pressure relief port 6 passes through the V15 valve and blows air from inside to outside to the filter F1 to perform a self-cleaning function, the direction of the air is opposite to the direction of the filtering from outside to inside, and the cleaning effect is good. The filtering process and the cleaning process may be performed simultaneously or separately.

The above description is only the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered by the present invention.

Claims

1. Self-cleaning device of filter is inhaled to blast type suction dryer, including A tower, B tower, air intlet, air outlet, gas vent, pressure release mouth and air-blower, air intlet is connected with A tower and B tower upper end respectively, and air outlet connects A tower and B tower lower extreme respectively, and the gas vent is connected with A tower and B tower upper end respectively, A tower and B tower lower extreme are located respectively to the pressure release mouth, the export of air-blower is connected with A tower and B tower lower extreme respectively, its characterized in that, the air-blower entrance is equipped with the pressure release mouth that two parallel pipelines and A tower and B tower are connected, be equipped with the air inlet on two parallel pipelines respectively, the air inlet all is equipped with the filter, is equipped with the control valve between each connecting line's the port respectively.

2. The self-cleaning device of the suction filter of the blast dryer as claimed in claim 1, wherein the pressure relief port is further provided with a silencer in communication with the outside and a pneumatic butterfly valve control.

3. The self-cleaning device of claim 1 wherein a heater is provided at the blower outlet.

4. The self-cleaning device of the suction filter of the blower-type vacuum dryer as claimed in claim 1, wherein the control valves between the air outlet and the blower outlet and the connection pipes of the towers a and B are check valves, and the pneumatic butterfly valve is arranged between the ports of the other pipes.