CN217303090U

CN217303090U - Shot blasting chamber ventilation dust removal system for casting

Info

Publication number: CN217303090U
Application number: CN202221235902.XU
Authority: CN
Inventors: 宋高举; 池佳春; 耿昌涵; 徐宏锦
Original assignee: SIPPR Engineering Group Co Ltd
Current assignee: SIPPR Engineering Group Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-26
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses a shot blasting chamber ventilation dust pelletizing system is used in casting, include: the shot blasting chamber is provided with an inlet end and an outlet end which are oppositely arranged, the inlet end is provided with an inlet door and a ventilation inlet, and the outlet end is provided with an air outlet pipe; the primary dust remover is provided with an air inlet and an air outlet, and the air inlet is connected with the air outlet pipe; the air exhaust fan is provided with an air inlet pipe and an air exhaust pipe, the air inlet pipe is connected with an air outlet of the primary dust remover, the air exhaust pipe is provided with a circulating air pipe communicated to the inlet end of the shot blasting chamber, and the circulating air pipe is provided with an electric control valve; and the inlet end of the secondary dust remover is connected with an exhaust pipe of the exhaust fan, and the outlet end of the secondary dust remover is connected with a chimney through a pipeline. The utility model discloses simple structure, investment are low, and are effectual, can alleviate the work load of second grade dust remover, reduce the heating ventilation energy consumption of casting shop.

Description

Shot blasting chamber ventilation dust removal system for casting

Technical Field

The utility model belongs to the technical field of shot blasting chamber dust removal technology and specifically relates to a shot blasting chamber ventilation dust pelletizing system is used in casting.

Background

Shot blasting is one of the important processes in the casting production process. For the shot blasting chamber of the intermittent production, a casting is sent by a trolley, then the inlet of the shot blasting chamber is closed, a ventilation system is opened simultaneously, then a shot is thrown to the casting by a shot blasting machine to perform surface treatment on the casting, particulate matters generated in the shot blasting process enter an air outlet along with ventilation air flow, and the particulate matters are prevented from being deposited and entering a steel shot recovery box to influence the shot blasting effect. However, the design scheme of the existing ventilation system often ignores the actual air flow organization condition in the shot blasting chamber, causes that the actual indoor ventilation rate is difficult to reach the design requirement, has high ineffective ventilation rate and poor dust removal effect, cannot meet the requirement of normal operation of the shot blasting chamber, and can ensure the shot blasting effect only by carrying out secondary screening on the steel shots in the steel shot recovery box to remove dust particles. If the dust removal effect is improved by increasing the ventilation quantity of the ventilation system, the burden of equipment is increased, and the air quantity of the ventilation system comes from a foundry, so that the heating energy consumption in winter in the foundry is increased, and the energy-saving operation cost of a heating system is influenced.

Disclosure of Invention

In order to solve the problem, the utility model provides a shot blasting chamber ventilation dust pelletizing system for casting specifically can take following technical scheme:

shot blasting chamber ventilation dust removal system for casting, include

The shot blasting chamber is provided with an inlet end and an outlet end which are oppositely arranged, the inlet end is provided with an inlet door and a ventilation inlet, and the outlet end is provided with an air outlet pipe;

the primary dust remover is provided with an air inlet and an air outlet, and the air inlet is connected with the air outlet pipe;

the air exhaust fan is provided with an air inlet pipe and an air exhaust pipe, the air inlet pipe is connected with an air outlet of the primary dust remover, the air exhaust pipe is provided with a circulating air pipe leading to the inlet end of the shot blasting chamber, and the circulating air pipe is provided with an electric control valve;

and the inlet end of the secondary dust remover is connected with an exhaust pipe of the exhaust fan, and the outlet end of the secondary dust remover is connected with a chimney through a pipeline.

The entrance door is an automatic door arranged at one end of the shot blasting chamber, and the casting is convenient to input and send out.

The outlet end of the circulating air pipe is arranged at the top of the inlet door end of the shot blasting chamber.

The air outlet pipe is arranged on the side wall of the shot blasting chamber opposite to the inlet door, and the air flow path covers shot blasting smoke and dust particles as far as possible and takes away the shot blasting smoke and dust particles.

The primary dust remover is a cyclone dust remover, can achieve a better dust removal effect, and has lower cost.

The secondary dust remover is a bag type dust remover, and has a good dust removing effect, so that the tail gas is ensured to be discharged up to the standard.

The utility model provides a shot-blasting chamber ventilation dust pelletizing system is used in casting, its simple structure, the investment is low, and is effectual, through set up the circulation tuber pipe that leads to the shot-blasting chamber at the fan exit end of airing exhaust, set up the electric control valve that is correlated with shot-blasting chamber entry door on the circulation tuber pipe simultaneously, make shot-blasting chamber entry door after closing, can return some air through the prefiltering to the shot-blasting chamber, make it participate in the air current formation in the shot-blasting chamber and the entrapment and the transport of particulate matter, thereby alleviate the work load of secondary dust remover, and then reduced the particulate matter total amount that the shot-blasting chamber discharged to the atmosphere; and secondly, due to the participation of circulating air, the air quantity extracted from the foundry by the ventilation system is reduced, so that the heating and ventilation energy consumption of the foundry is reduced, and the energy-saving effect on the foundry is realized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific working procedures are given, but the scope of the present invention is not limited to the following embodiments.

As shown in figure 1, shot-blasting room ventilation dust pelletizing system for casting, be applicable to the intermittent type formula shot-blasting room 1 that adopts the platform truck to send into the foundry goods, this shot-blasting room 1 is located the casting shop, has relative entry end and the exit end that sets up, installs the entry door on the lateral wall of its entry end, this entry door is automatically controlled driven automatically-controlled door for the input of foundry goods and seeing off. When the inlet door is closed, gaps (namely ventilation inlets) still exist around, and air in the casting shop can enter the shot blasting chamber 1 as a main source of dust removal air flow. The side wall of the outlet end of the shot blasting chamber 1 is provided with the air outlet pipe 2, and the air outlet pipe and the ventilation inlet are respectively arranged at two ends of the shot blasting chamber 1, so that indoor air flow paths can cover shot blasting smoke and dust particles and take away the shot blasting smoke and dust particles as far as possible. The outer side of the shot blasting chamber 1 is sequentially provided with a primary dust remover 3, a primary dust remover 4, a secondary dust remover 5 and a chimney 6. The primary dust remover 3 is provided with an air inlet and an air outlet, the air inlet is connected with the air outlet pipe 2 of the shot blasting chamber 1, the air outlet is connected with the air inlet pipe 7 of the primary dust remover 4, the air outlet pipe 8 of the primary dust remover 4 is connected with the inlet end of the secondary dust remover 5, and the outlet end of the secondary dust remover 5 is connected with the chimney 6 through a pipeline. The primary dust remover 3 adopts a cyclone dust remover, has large treatment capacity and low cost, and can reduce the load of particles at the inlet of the secondary dust remover 5. The second-stage dust remover 5 adopts a bag type dust remover which has higher price but good dust removing effect and can ensure that the tail gas reaches the standard and is discharged. In order to reduce the ventilation quantity of the bag type dust collector and reduce the filtering area of the bag type dust collector, thereby reducing the manufacturing cost and the occupied area of the bag type dust collector, a circulating air pipe 9 with the tail end positioned at the top of the shot blasting chamber 1 is communicated with an exhaust pipe 8 of the primary dust collector 4, and the air supply outlet of the circulating air pipe 9 adopts a rotational flow type or louvered structure made of manganese steel or carbon steel. The circulating air pipe 9 is also provided with an electric control valve 10 which is connected with an inlet door driving mechanism of the shot blasting chamber 1 and locked, when the inlet door of the shot blasting chamber 1 is closed, a sensor for detecting the working state of the driving mechanism sends a signal to a control center, and the control center enables the electric control valve 10 to be in an open state, so that part of the primarily filtered air of the primary dust remover 3 is returned to the shot blasting chamber 1 to participate in the formation of air flow in the shot blasting chamber 1 and the capture and transportation of particles, thereby reducing the working load of the secondary dust remover 5 and further reducing the total amount of the particles discharged from the shot blasting chamber 1 to the atmosphere. Due to the fact that the circulating air is added in the dust removal system, the air quantity extracted from the foundry by the ventilation system of the shot blasting chamber is reduced, and therefore heating and ventilation energy consumption of the foundry is reduced, and the dust removal system is very beneficial to energy conservation of the foundry. When the entrance door of the shot blasting chamber 1 is opened, the sensor for detecting the working state of the driving mechanism sends a signal to the control center, and the control center enables the electric control valve 10 to be in a closed state, so that the condition that primarily filtered air (still containing more particulate matters) is returned to the shot blasting chamber 1 to cause the condition that personnel are polluted when entering the shot blasting chamber 1 for operation is avoided.

It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a shot blasting room ventilation dust pelletizing system for casting which characterized in that: comprises that

2. The ventilation and dust removal system for the shot blasting chamber for casting of claim 1, wherein: the entrance door is an automatic door arranged at one end of the shot blasting chamber.

3. The ventilation and dust removal system for the shot blasting chamber for casting of claim 1, wherein: the outlet end of the circulating air pipe is arranged at the top of the inlet door end of the shot blasting chamber.

4. The ventilation and dust removal system for the shot blasting chamber for casting of claim 1, wherein: the air outlet pipe is arranged on the side wall of the shot blasting chamber opposite to the inlet door.

5. The ventilation and dust removal system for the shot blasting chamber for casting of claim 1, wherein: the primary dust remover is a cyclone dust remover.

6. The ventilation and dust removal system for the shot blasting chamber for casting of claim 1, wherein: the secondary dust remover is a bag type dust remover.