Purging device for zinc coating on outer wall of small-caliber thin-walled pipe

By designing a device that includes a purging gun, an air source, and an electronic control module, the problems of high cost and unstable operation of existing purging devices for the galvanized layer on the outer wall of small-diameter thin-walled pipes are solved, achieving multi-level control and cost reduction.

CN223518181UActive Publication Date: 2025-11-07TIANJIN YOUFA STEEL PIPE GRP CO LTD
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Patent Information

Application Number
CN202422485625.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-15
Publication Date
2025-11-07
Estimated Expiration
2034-10-15

AI Technical Summary

Technical Problem

Existing purging devices for the galvanized layer on the outer wall of small-diameter thin-walled pipes are costly or unstable in operation, and it is difficult to achieve multi-level control.

Method used

A device comprising several purge guns, an air source, an electronic control module, and a solenoid valve was designed. By connecting the electronic control module with the solenoid valve, purge control at different pressure levels can be achieved, and remote control and pressure monitoring functions are also provided.

Benefits of technology

It reduced equipment costs, achieved stability and flexibility in multi-level purging, and improved operational controllability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a purging device for a zinc coating on the outer wall of a small-caliber thin-walled tube, which comprises a plurality of purging guns, air sources, an electric control module and a plurality of electromagnetic valves, air ports of the purging guns are connected in parallel and are connected with output ports of the electromagnetic valves, input ports of the electromagnetic valves are respectively connected with a plurality of independent air sources, and the electric control module is electrically connected with the electromagnetic valves and the purging guns. And the purging pressure gears of the purging guns are controlled by switching on and off the electromagnetic valves. The multi-gear pressure purging device has the beneficial effects that the cost of the purging device is reduced, and multi-gear pressure purging is realized.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to pipe galvanization technical field, especially a kind of purging device for small-bore thin-walled pipe outer wall zinc coating. BACKGROUND

[0002] In industrial production, purging is often a post-processing step in galvanizing process, and the purging of the zinc coating on the outer wall of small-bore thin-walled pipe is usually to remove impurities and excess zinc slag on the surface of the zinc coating to obtain uniform and smooth zinc coating. The existing purging device is generally composed of gas source, control, execution, support and other components, and the supply of compressed air is combined with the electric control system to realize automatic or semi-automatic purging operation. The electric control part of the purging device is generally made of single-chip microcomputer or other embedded systems, which has the advantages of controllable purging intensity and the disadvantage of high cost. Or it is directly controlled by mechanical devices to control the purging of the gas source manually, which has the advantages of low cost and the disadvantages of unstable purging operation and purging intensity controlled by gas source pressure. SUMMARY

[0003] Therefore, the utility model aims at providing a purging device for small-bore thin-walled pipe outer wall zinc coating to reduce cost and realize multi-gear purging.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A purging device for small-bore thin-walled pipe outer wall zinc coating.

[0006] Further, it comprises a plurality of purging guns, a gas source, an electric control module, a plurality of electromagnetic valves, the gas outlets of the plurality of purging guns are connected in parallel with the output ports of the plurality of electromagnetic valves, the input ports of the plurality of electromagnetic valves are respectively connected to a plurality of individual gas sources, and the electric control module is electrically connected with the electromagnetic valves and the purging guns to control the purging pressure gear of the plurality of purging guns by opening and closing the plurality of electromagnetic valves.

[0007] Further, the electric control module comprises a power supply, a start-stop switch SB1, an execution unit, a control unit and a flow unit. The execution unit is controlled by the flow unit to blow out gas with positive pressure, the flow unit is controlled by the control unit to output gas flow with different pressure gears, and the control unit is controlled by workers.

[0008] The start-stop switch SB1 is connected in series at the positive electrode of the power supply, and the execution unit, the control unit and the flow unit are connected in parallel and electrically connected with the output end of the start-stop switch SB1.

[0009] Further, the control unit comprises a change-over switch SA1, a relay KA1 coil, a relay KA2 coil, a relay KA3 coil, the output of the change-over switch SA1 is connected in parallel to the input of the relay KA1 coil, the relay KA2 coil and the relay KA3 coil respectively, the output of the relay KA1 coil is connected to the input of the relay KA2 coil, the output of the relay KA2 coil is connected to the input of the relay KA3 coil, and the output of the relay KA3 coil is connected to the negative pole of the power supply.

[0010] Further, the flow unit comprises a relay KA1 switch, a relay KA2 switch, a relay KA3 switch, a relay KM1 coil, and the several electromagnetic valves comprise an electromagnetic valve K1, an electromagnetic valve K2 and an electromagnetic valve K3.

[0011] The input of the relay KA1 switch, the relay KA2 switch and the relay KA3 switch is connected in parallel to the positive pole of the power supply, the output is connected in series to the input of the electromagnetic valve K1, the electromagnetic valve K2 and the electromagnetic valve K3 respectively, the output of the electromagnetic valve K1, the electromagnetic valve K2 and the electromagnetic valve K3 is connected in parallel to the input of the relay KM1 coil, and the output of the relay KM1 coil is connected to the negative pole of the power supply.

[0012] Further, the execution unit comprises a relay KM1 switch, a button switch SB2 and a button switch SB3, and the several purge guns comprise a purge gun M1 and a purge gun M2, the input of the relay KM1 switch is connected to the positive pole of the power supply, the input of the button switch SB2 and the button switch SB3 is connected in parallel to the output of the relay KM1 switch, the output of the button switch SB2 and the button switch SB3 is connected to the input of the purge gun M1 and the purge gun M2 respectively, and the output of the purge gun M1 and the purge gun M2 is connected in parallel to the negative pole of the power supply.

[0013] Further, the control unit further comprises a remote power supply D1, a remote power supply D2, a remote power supply D3 and a remote negative pole, and a two-position change-over switch SA2.

[0014] The two-position change-over switch SA2 is connected in series between the relay KA3 coil and the negative pole of the power supply, the normally closed contact of the two-position change-over switch SA2 is connected to the negative pole of the power supply, and the normally open contact is connected to the remote negative pole.

[0015] The remote power supply D1 is connected to the input of the relay KA1 coil, the remote power supply D2 is connected to the input of the relay KA2 coil, and the remote power supply D3 is connected to the input of the relay KA3 coil.

[0016] Further, the execution unit further comprises an indicator lamp L1 and a two-position switch SP1, the two-position switch SP1 is connected in series between the relay KM1 switch and the start-stop switch SB1, the normally closed contact of the two-position switch SP1 is electrically connected with the input end of the relay KM1, the normally open contact of the two-position switch SP1 is electrically connected with the input end of the indicator lamp L1, and the output end of the indicator lamp L1 is electrically connected to the negative pole of the power supply.

[0017] The two-position pressure switch SP1 is used for cutting off the blowing guns M1 and M2 when the pressure of the gas source is insufficient, and the indicator lamp L1 is lighted.

[0018] Compared with the prior art, the blowing device for the zinc coating layer on the outer wall of a small-caliber thin-walled pipe has the following beneficial effects:

[0019] (1) The blowing device, the gas inlets of the plurality of blowing guns are connected with the output ports of the plurality of electromagnetic valves, the input ports of the plurality of electromagnetic valves are respectively connected with the plurality of single gas sources, each electromagnetic valve is supplied with gas by a single gas source to realize different pressure blowing gears, and the same gas source is provided for all the blowing guns, and preferably, the pressures of the single gas sources should be close to reduce the interference between different gas sources.

[0020] (2) The blowing device, the remote power supply D1, the remote power supply D2, the remote power supply D3 and the remote power supply negative pole are another control path, when the two-position switch SA2 is set to remote, the control path is not affected by the two-position switch SA1, and the pressure gear of the blowing gun is remotely controlled.

[0021] (3) The blowing device, the two-position pressure switch SP1 can be connected with one single gas source, and the two-position pressure switch SP1 is used for cutting off the blowing guns M1 and M2 when the pressure of the gas source is insufficient, and the indicator lamp L1 is lighted. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0023] Figure 1 The blowing device electrical principle schematic diagram is described in the embodiments of the present application. DETAILED DESCRIPTION

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. EMBODIMENT

[0026] The invention discloses a blowing device for the zinc coating of the outer wall of small-caliber thin-walled pipes, comprising a plurality of blowing guns, a gas source, an electric control module, a plurality of electromagnetic valves, the gas outlets of the plurality of blowing guns being connected in parallel with the output ports of the plurality of electromagnetic valves, the input ports of the plurality of electromagnetic valves being respectively connected to a plurality of individual gas sources, so that each electromagnetic valve is supplied with gas by an individual gas source to realize different pressure blowing gears, and the same gas source is provided for all the blowing guns, and the pressure of the individual gas sources is preferably close to reduce the interference between different gas sources. The electric control module is electrically connected with the electromagnetic valves and the blowing guns to control the blowing pressure gears of the blowing guns by opening and closing the plurality of electromagnetic valves.

[0027] Specifically, as shown in Figure 1 the electric control module comprises a power supply, a start-stop switch SB1, an execution unit, a control unit and a flow unit, the execution unit is controlled by the flow unit to blow out gas with positive pressure, the flow unit is controlled by the control unit to output gas flow with different pressure gears, and the control unit is operated by workers; the start-stop switch SB1 is connected in series at the positive pole of the power supply, and the execution unit, the control unit and the flow unit are connected in parallel and electrically connected with the output end of the start-stop switch SB1.

[0028] Specifically, the control unit comprises a switch SA1, a relay KA1 coil, a relay KA2 coil and a relay KA3 coil, the output end of the switch SA1 is connected in parallel with the input end of the relay KA1 coil, the relay KA2 coil and the relay KA3 coil, respectively, the output end of the relay KA1 coil is electrically connected to the input end of the relay KA2 coil, the output end of the relay KA2 coil is electrically connected to the input end of the relay KA3 coil, and the output end of the relay KA3 coil is electrically connected to the negative pole of the power supply. In this embodiment, the switch SA1 is a three-position gear switch to realize three blowing pressure controls, and the control principle is: when the low pressure gear is selected, the switch SA1 is set to gear 1 as shown in Figure 1 , only the relay KA3 coil is turned on at this time, when the medium pressure gear is selected, the switch SA1 is set to gear 2, the relay KA2 coil and the relay KA3 coil are turned on at this time, and when the high pressure gear is selected, the switch SA1 is set to gear 3, the relay KA1 coil, the relay KA2 coil and the relay KA3 coil are turned on at this time.

[0029] Specifically, the flow unit includes a relay KA1 switch, a relay KA2 switch, a relay KA3 switch, a relay KM1 coil, a plurality of electromagnetic valves including electromagnetic valve K1, electromagnetic valve K2, electromagnetic valve K3; the input ends of the relay KA1 switch, the relay KA2 switch, and the relay KA3 switch are connected in parallel to the positive pole of the power supply, the output ends are connected in series to the input ends of the electromagnetic valve K1, the electromagnetic valve K2, and the electromagnetic valve K3, the output ends of the electromagnetic valve K1, the electromagnetic valve K2, and the electromagnetic valve K3 are connected in parallel to the input end of the relay KM1 coil, and the output end of the relay KM1 coil is electrically connected to the negative pole of the power supply. The selection of the high, medium, and low pressure gears is realized by controlling the opening and closing of the electromagnetic valve K1, the electromagnetic valve K2, and the electromagnetic valve K3.

[0030] Specifically, the execution unit includes a relay KM1 switch, a button switch SB2, and a button switch SB3, a plurality of purge guns including purge gun M1 and purge gun M2, the input end of the relay KM1 switch is electrically connected to the positive pole of the power supply, the input ends of the button switch SB2 and the button switch SB3 are connected in parallel to the output end of the relay KM1 switch, the input ends of the purge gun M1 and the purge gun M2 are respectively connected to the output ends of the button switch SB2 and the button switch SB3, and the output ends of the purge gun M1 and the purge gun M2 are connected in parallel to the negative pole of the power supply. Embodiment

[0031] Optionally, the control unit further includes remote power supply D1, remote power supply D2, remote power supply D3, remote power supply negative pole, and two-position change-over switch SA2; the two-position change-over switch SA2 is connected in series between the relay KA3 coil and the negative pole of the power supply, the normally closed contact of the two-position change-over switch SA2 is electrically connected to the negative pole of the power supply, and the normally open contact is electrically connected to the remote power supply negative pole; the remote power supply D1 is electrically connected to the input end of the relay KA1 coil, the remote power supply D2 is electrically connected to the input end of the relay KA2 coil, and the remote power supply D3 is electrically connected to the input end of the relay KA3 coil. The remote power supply D1, the remote power supply D2, the remote power supply D3, and the remote power supply negative pole are another control path, when the two-position change-over switch SA2 is set to remote, the control path is not affected by the change-over switch SA1, and the pressure gear of the purge gun is remotely controlled. Embodiment

[0032] The execution unit further includes an indicator lamp L1 and a two-position change-over switch SP1, the two-position change-over switch SP1 is connected in series between the relay KM1 switch and the start-stop switch SB1, the normally closed contact of the two-position change-over switch SP1 is electrically connected to the input end of the relay KM1, the normally open contact of the two-position change-over switch SP1 is electrically connected to the input end of the indicator lamp L1, and the output end of the indicator lamp L1 is electrically connected to the negative pole of the power supply. The two-position pressure switch SP1 can be connected to one of the single gas sources, and the two-position pressure switch SP1 is used to cut off the purge gun M1 and the purge gun M2 when the pressure of the gas source is insufficient, and the indicator lamp L1 is turned on.

[0033] Specifically, the information transmission, signal processing, control mode and control logic involved in the technical solution can be realized by using the prior art.

[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

[0035] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A blowing device for the zinc coating of the outer wall of small-diameter thin-walled tubes, characterized in that: The device comprises several purge guns, gas sources, an electric control module, several electromagnetic valves, the gas outlets of the several purge guns are connected with the output ports of the several electromagnetic valves in parallel, the input ports of the several electromagnetic valves are respectively connected with several individual gas sources, and the electric control module is electrically connected with the electromagnetic valves and the purge guns to control the purge pressure levels of the several purge guns by opening and closing the several electromagnetic valves.

2. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 1, characterized in that: The electric control module comprises a power supply, a start-stop switch SB1, an execution unit, a control unit and a flow unit, the execution unit is controlled by the flow unit to blow out gas with positive pressure, the flow unit is controlled by the control unit to output gas flow with different pressure levels, and the control unit is controlled by workers; The start-stop switch SB1 is connected in series at the positive pole of the power supply, and the execution unit, the control unit and the flow unit are connected in parallel and electrically connected with the output end of the start-stop switch SB1.

3. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 2, characterized in that: The control unit comprises a change-over switch SA1, a relay KA1 coil, a relay KA2 coil and a relay KA3 coil, the output end of the change-over switch SA1 is connected in parallel with the input end of the relay KA1 coil, the relay KA2 coil and the relay KA3 coil respectively, the output end of the relay KA1 coil is electrically connected to the input end of the relay KA2 coil, the output end of the relay KA2 coil is electrically connected to the input end of the relay KA3 coil, and the output end of the relay KA3 coil is electrically connected to the negative pole of the power supply.

4. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 3, characterized in that: The flow unit comprises a relay KA1 switch, a relay KA2 switch, a relay KA3 switch and a relay KM1 coil, and the several electromagnetic valves comprise an electromagnetic valve K1, an electromagnetic valve K2 and an electromagnetic valve K3. The input end of the relay KA1 switch, the relay KA2 switch and the relay KA3 switch is connected in parallel to the positive pole of the power supply, the output end is connected in series at the input end of the electromagnetic valve K1, the electromagnetic valve K2 and the electromagnetic valve K3 respectively, the output end of the electromagnetic valve K1, the electromagnetic valve K2 and the electromagnetic valve K3 is connected in parallel to the input end of the relay KM1 coil, and the output end of the relay KM1 coil is electrically connected to the negative pole of the power supply.

5. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 4, characterized in that: The execution unit comprises a relay KM1 switch, a button switch SB2 and a button switch SB3, the several purge guns comprise a purge gun M1 and a purge gun M2, the input end of the relay KM1 switch is electrically connected to the positive pole of the power supply, the input end of the button switch SB2 and the button switch SB3 is connected in parallel to the output end of the relay KM1 switch, the input end of the purge gun M1 and the purge gun M2 is connected to the output end of the button switch SB2 and the button switch SB3 respectively, and the output end of the purge gun M1 and the purge gun M2 is connected in parallel to the negative pole of the power supply.

6. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 3, characterized in that: The control unit further comprises a remote power supply D1, a remote power supply D2, a remote power supply D3 and a remote power supply negative pole, and a two-position change-over switch SA2. The two-position change-over switch SA2 is connected in series between the relay KA3 coil and the negative pole of the power supply, the normally closed contact of the two-position change-over switch SA2 is electrically connected with the negative pole of the power supply, and the normally open contact is electrically connected with the remote power supply negative pole. The remote power supply D1 is electrically connected with the input end of the relay KA1 coil, the remote power supply D2 is electrically connected with the input end of the relay KA2 coil, and the remote power supply D3 is electrically connected with the input end of the relay KA3 coil.

7. The purging device for the outer wall of a small-caliber thin-walled tube according to claim 5, characterized in that: The execution unit further comprises an indicator lamp L1 and a two-position change-over switch SP1, which is connected in series between the relay KM1 switch and the start-stop switch SB1, the normally closed contact of the two-position change-over switch SP1 is electrically connected with the input end of the relay KM1, the normally open contact of the two-position change-over switch SP1 is electrically connected with the input end of the indicator lamp L1, and the output end of the indicator lamp L1 is electrically connected with the negative pole of the power supply. The two-position pressure switch SP1 is used to cut off the purge guns M1 and M2 when the pressure of the gas source is insufficient, and the indicator lamp L1 is turned on.