A sandblasting and rust removal and abrasive recovery system suitable for heavy steel structures

Abstract

A sandblasting and rust removal and abrasive recovery system suitable for heavy steel structural parts includes a sandblasting device and an abrasive recovery device. The sandblasting device is composed of at least one fixed sandblasting device and at least one follow-up sandblasting device. The fixed sandblasting device and the follow-up sandblasting device are connected to an air supply unit, and the air supply unit provides power to blast sand into the sandblasting room and the movable telescopic protective shed through a sand suction machine and a spray gun respectively; the abrasive recovery device includes an abrasive recovery trough arranged in the sandblasting room and a handheld abrasive recovery device located in the movable telescopic protective shed, and the abrasive recovery trough and the handheld abrasive recovery device are connected to their respective sand suction machines through recovery pipes. The sandblasting and rust removal efficiency of the present invention can not only improve the rust removal area and sandblasting amount, but also realize the double speed and automatic recycling of abrasives.

Description

Technical Field

[0001] The invention relates to a sandblasting device, in particular to a sandblasting rust removal and abrasive recovery system suitable for heavy steel structural parts, belonging to the technical field of equipment manufacturing. Background Art

[0002] At present, it is well known that sandblasting rust removal uses compressed air as a power to form a high-speed jet beam to spray material (garnet sand, copper ore sand, quartz sand, corundum, iron sand, Hainan sand) at high speed onto the surface of the workpiece to be processed, so that the appearance or shape of the outer surface of the workpiece surface changes.

[0003] Sandblasting machine is the most widely used product in abrasive jet. Sandblasting machine is generally divided into two categories: dry sandblasting machine and liquid sandblasting machine. Dry sandblasting machine can be divided into suction type and pressure type. A complete suction dry sandblasting machine is generally composed of six systems, namely structural system, medium power system, pipeline system, dust removal system, control system and auxiliary system. Its working principle is to use compressed air as the power, and the negative pressure formed in the spray gun through the high-speed movement of the airflow will suck the abrasive into the spray gun through the sand conveying pipe and eject it through the nozzle, spraying it onto the processed surface to achieve the desired processing purpose. In the suction dry sandblasting machine, compressed air is both the feeding power and the acceleration power of the jet.

[0004] At present, when existing suction dry sandblasting machines are designed and manufactured, the main body of the equipment is mostly small sandblasting machines and box-type sandblasting machines, which are mainly for easy operation and mobility, but cannot meet the sandblasting and rust removal needs of heavy steel structures such as gantry cranes. In particular, the existing sandblasting machines use a single-gun sandblasting working mode, which has poor performance and leads to extremely low sandblasting efficiency. At the same time, the space of the sandblasting room is limited, and the sandblasting operation cannot be carried out efficiently. In addition, abrasive recovery also mainly relies on manual recovery. These problems have seriously hindered the output of the workshop. Therefore, for large workpieces, problems such as sandblasting volume, abrasive recovery, and rust removal area need to be solved urgently. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a sandblasting rust removal and abrasive recovery system suitable for heavy steel structural parts, which can greatly improve the efficiency of sandblasting rust removal, increase the rust removal area and sandblasting amount, and can double the efficiency of abrasive recovery and reuse.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the sandblasting equipment and the abrasive recovery equipment are included, the sandblasting equipment is composed of at least one fixed sandblasting device and at least one follow-up sandblasting device, the fixed sandblasting device and the follow-up sandblasting device are connected to an air supply unit, the air supply unit provides power to blast sand into a sandblasting room and a movable telescopic protective shed respectively through a sand suction machine and a spray gun; the abrasive recovery equipment comprises an abrasive recovery trough arranged in the sandblasting room and a handheld abrasive recovery device located in the movable telescopic protective shed, the abrasive recovery trough and the handheld abrasive recovery device are connected to their respective sand suction machines through recovery pipelines.

[0007] Compared with the prior art, the sandblasting and rust removal and abrasive recovery system for heavy steel structural parts of the present invention is provided with at least one fixed sandblasting device and at least one follow-up sandblasting device, achieving the purpose of at least two guns sandblasting, one is fixed in the sandblasting room for sandblasting, and the other is sandblasting on the spot with the equipment, which greatly improves the sandblasting efficiency, meets the requirements of sandblasting volume and rust removal area for sandblasting and rust removal of large workpieces, ensures production, and is particularly suitable for workshop operations. The present invention also greatly improves the sand suction efficiency and recycling rate by setting up automated abrasive recovery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0009] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0010] In the figure, 101, gas source station I, 102, gas storage tank I, 103, filter I, 104, one-way valve I, 105, four-way joint, 106, first sandblasting gun belt, 107, second sandblasting gun belt, 108, first sand suction machine, 109, second sand suction machine, 110, first distribution box, 111, second distribution box, 201, first sand suction and dust removal power station, 202, dust removal machine, 2021, pneumatic valve group, 2022, filter group, 20 3. One-way valve IV, 204. Dust removal air source, 205. Gas storage tank III, 206. One-way valve III, 207. Second sand suction and dust removal power station, 208. Exhaust pipe, 209. Construction clothing ventilation device, 301. Gas source station II, 302. Gas storage tank II, 303. Filter II, 304. One-way valve II, 401. Abrasive recovery trough, 402. Handheld abrasive recovery device, 500. Movable telescopic protective shed, 600. Centralized control system. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] Figure 1 The schematic diagram of the structure of a preferred embodiment of the present invention is shown. The sandblasting and rust removal and abrasive recovery system suitable for heavy steel structural parts includes a sandblasting device and an abrasive recovery device. The sandblasting device is composed of a fixed sandblasting device at one level and a follow-up sandblasting device at one level. The fixed sandblasting device and the follow-up sandblasting device are connected to the air supply unit, and the air supply unit provides power to blast the sand in the sandblasting room and the movable telescopic protective shed 500 through the sand suction machine and the spray gun respectively; the system is equivalent to connecting a set of auxiliary sandblasting equipment in series on the basis of the original sandblasting equipment, so as to achieve the purpose of double-gun sandblasting, one is fixed in the sandblasting room for sandblasting, and the other is sandblasting on the spot with the equipment. In order to achieve efficient rust removal with a larger sandblasting amount / sandblasting area, the present invention can also set any combination of multi-stage fixed sandblasting devices and multi-stage follow-up sandblasting devices, so as to be suitable for completing high-yield operations of various heavy steel structural parts in the workshop.

[0013] In an embodiment of the present invention, in order to greatly improve the sand suction efficiency of the recovered abrasive and eliminate the original manual shovel sand pushing process, an abrasive recovery device is provided. The abrasive recovery device comprises an abrasive recovery tank 401 provided in the sandblasting room and a handheld abrasive recovery device 402 located in a movable telescopic protective shed 500. The abrasive recovery tank 401 and the handheld abrasive recovery device 402 are respectively connected to their respective sand suction machines through recovery pipes. The abrasive recovery tank 401 directly collects the abrasive in the sandblasting room effectively. The handheld abrasive recovery device 402 can adopt a vacuum exhaust method and use a three-phase motor to drive a centrifugal fan. The suction force of the centrifugal fan drives the handheld high-pressure hose to recover abrasives such as steel sand. It has been proven that the work efficiency can be improved by more than 100%.

[0014] In a preferred design of this embodiment, the fixed sandblasting device is mainly composed of a first sand suction machine 108, a first sandblasting gun belt 106 and a fixed spray gun connected in sequence, the fixed spray gun is connected to the sandblasting room through the first sandblasting gun belt 106, and the first sandblasting gun belt 106 is connected to the air supply unit. With the power of high-pressure air from the air supply unit, the abrasive flowing out from the bottom of the first sand suction machine 108 is sprayed onto the surface of the component to be processed in the sandblasting room through the first sandblasting gun belt 106 and the fixed spray gun, thereby completing the sandblasting and rust removal in a fixed place.

[0015] In a preferred design of this embodiment, the follow-up sandblasting device is mainly composed of a second sand suction machine 109, a second sandblasting gun belt 107 and a follow-up spray gun connected in sequence. The follow-up spray gun is connected to the movable telescopic protective shed 500 through the second sandblasting gun belt 107, and the second sandblasting gun belt 107 is connected to the air supply unit. With the power of high-pressure air from the air supply unit, the abrasive flowing out from the bottom of the second sand suction machine 109 is sprayed onto the surface of the component to be processed in the movable telescopic protective shed 500 through the second sandblasting gun belt 107 and the follow-up spray gun. The movable telescopic protective shed 500 can be moved according to the position of the structural member, and the sandblasting gun belt and the spray gun can increase or decrease the length of the pipeline according to the distance of the structural member, thereby eliminating the hoisting and lifting link, achieving the purpose of on-site sandblasting, and more conducive to completing the efficient sandblasting of large workpieces in a limited space.

[0016] In order to further optimize the effect and accuracy of sandblasting, a distribution box with a built-in pressure regulating valve is provided below the first sand suction machine 108 / the second sand suction machine 109, namely, a first distribution box 110 and a second distribution box 111, and the distribution box is connected to the first sandblasting gun belt 106 / the second sandblasting gun belt 107. The steel sand and other abrasives stored in the sand suction machine sink by their own weight and reach the distribution box. The steel sand and other abrasives pass through the bypass air source port in the distribution box body, and the steel sand is driven out to be pressed into the sand conveying pipe, and then ejected through the sandblasting gun and sprayed onto the surface of the structural part.

[0017] In this embodiment, the gas supply unit includes a gas source station Ⅰ101, a gas storage tank Ⅰ102, a filter Ⅰ103 and a one-way valve Ⅰ104 connected in sequence, and the one-way valve Ⅰ104 is connected to the first sandblasting gun belt 106 and the second sandblasting gun belt 107 through pipelines. Specifically, each pipeline is connected through a four-way connector 105. In addition, while meeting the gas consumption, air pressure and other parameter indicators, a pressure reducing and regulating device can be further added, which is composed of a gas source station Ⅱ301, a gas storage tank Ⅱ302, a filter Ⅱ303 and a one-way valve Ⅱ304 connected in sequence, and is connected to the fixed sandblasting device and the follow-up sandblasting device for air supply. It is used to ensure that the multi-stage sandblasting equipment meets the sandblasting and rust removal specification requirements after being connected in series.

[0018] As a further step to meet the requirements of environmental protection, the sandblasting and rust removal and abrasive recovery system for heavy steel structural parts of the present invention also includes a dust removal unit, which includes a main dust removal device and an auxiliary dust removal device respectively matched with the fixed sandblasting device and the follow-up sandblasting device. The main dust removal device is composed of a first sand suction and dust removal power station, a one-way valve IV 203 and a dust collector 202 connected in sequence, and its front and rear ends are respectively connected to the filter I 103 of the air supply unit and the first sand suction machine 108; the auxiliary dust removal device is composed of a dust removal air source 204, an air storage tank connected in sequence Ⅲ205, one-way valve Ⅲ206, exhaust pipe 208 and second sand suction and dust removal power station 207, the rear end of which is connected to the second sand suction machine 109. A filtering structure is arranged in the exhaust pipe 208. This filtering structure can be a filter screen or other structural layer suitable for dust filtering, which plays a filtering role. The dust discharged by the second sand suction machine 109 is discharged through the filtering structure under the push of high-pressure gas, and another part of the dust with relatively high density is retained inside the filtering structure. There is an inspection door beside the exhaust pipe 208. The filter screen is cleaned and replaced regularly according to the frequency of use. The main dust removal device can timely and effectively transport the dust generated by the first sand suction machine 108 to the main dust removal device for treatment and discharge. At the same time, the auxiliary dust removal device also strongly collects and removes dust from the second sand suction machine 109. Preferably, under the premise that the inlet of the dust removal pipeline is set at the top of the dust collector 202, the dust collector 202 is provided with a pneumatic valve group 2021 and a filter group 2022 from top to bottom, the filter group 2022 corresponds to the position of the first sand suction and dust removal power station 201, the pneumatic valve group 2021 is connected to the pipeline of the first gas source station, and the pneumatic valve group 2021 is composed of a fine sand net and a solenoid valve group, which plays a role of buffering and vibrating. The dust entering the dust collector 202 from the dust removal pipeline is too concentrated and unevenly distributed, so it needs to be vibrated to make it fall evenly into the filter. The solenoid valve group is connected to the fine sand net on the upper part of the dust collector 202, and the high-pressure gas is pneumatically vibrated by the start and stop of the solenoid valve group, so that the fine sand net vibrates, which plays a role of buffering and uniform falling. The solenoid valve group is set by time and starts at a certain time interval, and the filter group 2022 located below can maximize the dust accumulation.

[0019] Ventilation suits are labor protection suits. The environment during sandblasting and rust removal is harsh and dusty. Therefore, ventilation suits must be worn. However, the suits are closed in nature and have poor ventilation. Sandblasters have difficulty breathing during operations, especially in the hot summer when construction is difficult. In order to protect the health of sandblasters, the main gas pipeline is branched, and the gas is sent to the inside of the ventilation suit after being decompressed to meet ventilation conditions. Therefore, as a further optimization design, the gas storage tank III 205 is also connected to the construction suit ventilation device 209 to help construction workers remove dust from their bodies and ensure the comfort of the operation. Specifically, the construction suit ventilation device 209 can be composed of a ventilation pipeline, a pressure reducing valve, a quick-connect connector and a nylon pipeline connected in sequence, and finally connected to the inside of the ventilation suit to achieve the purpose of air supply and ventilation.

[0020] The sandblasting, rust removal and abrasive recovery system suitable for heavy steel structural parts of the present invention can also include a centralized control system 600 associated with other structures, which intelligently controls a series of action sequences and effect corrections of various air source stations, filters, one-way valves, distribution boxes, sand suction and dust removal power stations, etc., to achieve optimal configuration.

[0021] The system of the present invention has been tested by actual sandblasting of steel components. All parameters meet the requirements of sandblasting operations, the use effect is obvious, and the operation is stable. A serialized process is formed, and sandblasting, sand suction, and dust removal can be operated continuously, greatly improving work efficiency. According to calculations, the simultaneous operation of double-gun sandblasting can improve work efficiency by 100%. After improving the efficiency, the sandblasting and rust removal capacity of the workshop is increased by about 100%, and the output of the workshop is greatly improved. At the same time, abrasive recovery improves the sand pushing efficiency by 100% and reduces the fatigue intensity of the operators. In addition, since the system adopts an assembly method, it is convenient for the equipment to be refitted and disassembled for the second time. It is estimated that the equipment cost is saved by 150,000 yuan, and the economic benefits are significant.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification and equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A sandblasting and rust removal and abrasive recovery system suitable for heavy steel structures, characterized by: The invention comprises a sandblasting device and an abrasive recovery device, wherein the sandblasting device comprises at least one fixed sandblasting device and at least one follow-up sandblasting device, wherein the fixed sandblasting device and the follow-up sandblasting device are connected to an air supply unit, and the air supply unit provides power to blast sand into a sandblasting room and a movable telescopic protective shed (500) through a sand suction machine and a spray gun respectively; The abrasive recovery equipment comprises an abrasive recovery tank (401) arranged in a sandblasting room and a handheld abrasive recovery device (402) located in a movable telescopic protective shed (500), wherein the abrasive recovery tank (401) and the handheld abrasive recovery device (402) are respectively connected to respective sand suction machines through recovery pipes; The fixed sandblasting device mainly consists of a first sand suction machine (108), a first sandblasting gun belt (106) and a fixed spray gun which are connected in sequence. The fixed spray gun is connected to the sandblasting room through the first sandblasting gun belt (106). The first sandblasting gun belt (106) is connected to the air supply unit. The follow-up sandblasting device mainly consists of a second sand suction machine (109), a second sandblasting gun belt (107) and a follow-up spray gun which are connected in sequence. The follow-up spray gun is connected to the movable telescopic protective shed (500) through the second sandblasting gun belt (107). The second sandblasting gun belt (107) is connected to the air supply unit. The invention also comprises a dust removal unit, which comprises a main dust removal device and an auxiliary dust removal device respectively matched with the fixed sand blasting device and the follow-up sand blasting device. The main dust removal device is composed of a first sand suction and dust removal power station (201), a one-way valve IV (203) and a dust collector (202) which are connected in sequence, and the front and rear ends of the main dust removal device are respectively connected to the filter I (103) of the air supply unit and the first sand suction machine (108); the auxiliary dust removal device is composed of a dust removal air source (204), an air storage tank III (205), a one-way valve III (206), an exhaust pipe (208) and a second sand suction and dust removal power station (207) which are connected in sequence, and the rear end of the main dust removal device is connected to the second sand suction machine (109), and a filtering structure is arranged in the exhaust pipe (208).

2. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: A distribution box with a built-in pressure regulating valve is provided below the first sand suction machine (108) / the second sand suction machine (109), and the distribution box is connected to the first sandblasting gun belt (106) / the second sandblasting gun belt (107).

3. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: The gas supply unit comprises a gas source station I (101), a gas storage tank I (102), a filter I (103) and a one-way valve I (104) which are connected in sequence. The one-way valve (104) I is connected to a first sandblasting gun belt (106) and a second sandblasting gun belt (107) through pipelines.

4. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: The handheld abrasive recovery device (402) comprises a centrifugal fan and a handheld high-pressure hose which are connected to each other.

5. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: The gas storage tank III (205) is also connected to the construction suit ventilation device (209), which is composed of a ventilation pipeline, a pressure reducing valve, a quick-connect connector and a nylon pipeline connected in sequence, and finally connected to the inside of the ventilation suit.

6. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: The dust collector (202) is provided with a pneumatic valve group (2021) and a filter group (2022) from top to bottom. The filter group (2022) corresponds to the position of the first sand suction and dust removal power station (201). The pneumatic valve group (2021) is connected to the pipeline of the first air source station. The inlet of the dust removal pipeline is arranged at the top of the dust collector (202).

7. The sandblasting and rust removal and abrasive recovery system for heavy steel structures according to claim 1 is characterized by: It also includes a pressure reducing and regulating device, which is composed of a gas source station II (301), a gas storage tank II (302), a filter II (303) and a one-way valve II (304) connected in sequence, and is connected to the fixed sandblasting device and the follow-up sandblasting device for air supply.

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