A new type of micro-flow pressure regulating valve for argon arc welding

Abstract

The utility model discloses a new type of micro-flow pressure-stabilizing valve for argon arc welding, which belongs to the technical field of pressure-stabilizing valves. The utility model includes a columnar valve body, a flow meter and a valve core structure; an air inlet groove and an air outlet groove are respectively provided on both sides of the columnar valve body; a valve core groove for installing the valve core structure is provided on the side of the columnar valve body; an air inlet hole is provided at the bottom of the air inlet groove; an air outlet hole is provided at the bottom of the air outlet groove; the air inlet hole and the air outlet hole are both connected to the valve core groove; a detection groove is provided on the side of the columnar valve body; the detection head of the flow meter is matched and installed in the detection groove; the air outlet groove is connected to the detection groove. The utility model realizes accurate detection of the air flow rate by arranging the air outlet hole to be connected with the detection groove and installing the flow meter in the detection groove; the valve core assembly is installed in the valve core groove and the switch and the flow rate are driven by the driving assembly; it can be pre-adjusted according to the flow meter before argon arc welding to avoid argon gas waste during argon arc welding.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-stabilizing valves, in particular to a novel micro-flow pressure-stabilizing valve for argon arc welding. Background Art

[0002] Argon arc welding technology is a welding technology that uses argon as a shielding gas; it is also called argon gas shielded welding. It is to pass argon shielding gas around the arc welding to isolate the air outside the welding area to prevent oxidation of the welding area. When the argon arc welding technology is actually used for welding, it is necessary to vent the gas in advance to ensure that the gas output from the outlet pipe is stable before the actual welding operation. In the above process, argon is wasted because of the pre-venting each time. In order to solve the above problem, the utility model provides a new type of micro-flow pressure regulating valve for argon arc welding. Utility Model Content

[0003] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a new type of micro-flow pressure-stabilizing valve for argon arc welding, which is connected to the detection groove by arranging an air outlet and a flow meter is installed in the detection groove; a valve core assembly is installed in the valve core groove and the switch and the flow rate are controlled by the driving assembly, so as to realize pre-adjustment of the air outlet before argon arc welding, thereby solving the technical problems raised in the background technology.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model provides a new type of micro-flow pressure-stabilizing valve for argon arc welding, including: a columnar valve body, a flowmeter and a valve core structure; an air inlet groove and an air outlet groove are respectively provided on both sides of the columnar valve body; a valve core groove for installing the valve core structure is provided on the side of the columnar valve body; an air inlet hole is provided at the bottom of the air inlet groove; an air outlet hole is provided at the bottom of the air outlet groove; the air inlet hole and the air outlet hole are both connected to the valve core groove; a detection groove is provided on the side of the columnar valve body; the detection head of the flowmeter is matched and installed in the detection groove; the air outlet groove is connected to the detection groove.

[0005] Preferably, the valve core structure includes a valve core assembly and a drive assembly; the valve core assembly includes an outer valve column and an inner valve core; the outer valve column is threadedly installed in the valve core groove; a drive groove is provided on the outer end surface of the valve core groove; a stepped hole is provided coaxially at the bottom of the drive groove; a limit column is installed in a matching manner at the wide part of the stepped hole; the inner valve core is slidably installed in the narrow part of the stepped hole; the valve stem connected to one end of the inner valve core slides through the limit column and extends into the drive groove;

[0006] An airflow annular groove is coaxially arranged on the outside of the outer valve column; the airflow annular groove symmetrically arranges airflow holes connected with the narrow part of the stepped hole; the airflow annular groove is respectively connected with the air inlet hole and the air outlet hole.

[0007] Preferably, a spring A is sleeved on the outer side of the valve stem and a limit block is provided at the end of the valve stem.

[0008] Preferably, the drive assembly comprises a cap and a screw; the cap is threadedly connected to the outer valve column; and the screw is threadedly connected to the cap.

[0009] Preferably, a shift block is provided at the outer end of the screw rod; a push plate is provided at the inner end of the screw rod; a buffer plate is slidably installed in the cap; and a spring B is passed between the buffer plate and the push plate.

[0010] Preferably, the outer valve column is sleeved with two sealing gaskets A and the two sealing gaskets A are located on both sides of the airflow ring groove.

[0011] Preferably, a sealing gasket B is sleeved on the outer side of the limit column; and a sealing gasket C is sleeved on the outer side of the inner valve core.

[0012] The beneficial effects of the utility model are:

[0013] The utility model realizes accurate detection of the air flow rate by arranging an air outlet hole to be connected with the detection groove and installing a flow meter in the detection groove; a valve core component is installed in the valve core groove and a control switch and the flow rate are driven by a driving component; the flow meter can be pre-adjusted before argon arc welding to avoid argon gas waste during argon arc welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The utility model is a schematic structural diagram of a novel micro-flow pressure-stabilizing valve for argon arc welding provided by the utility model.

[0016] Figure 2 for Figure 1 Right view of .

[0017] Figure 3 for Figure 2 Sectional view of AA.

[0018] Figure 4 It is a structural schematic diagram of the flow meter in the utility model installed on the columnar valve body.

[0019] Figure 5 It is a structural schematic diagram of the valve core assembly in the utility model.

[0020] Figure 6 for Figure 5 Vertical cross-sectional view of .

[0021] Figure 7 It is a structural schematic diagram of the flow meter in the utility model.

[0022] Figure 8 It is a vertical cross-sectional view of the inner and outer valve columns of the utility model.

[0023] Fig. 9 It is a structural schematic diagram of the mutual installation of the inner valve core and the limit column in the utility model.

[0024] Explanation of the accompanying drawings: 1-columnar valve body, 11-air inlet groove, 111-air inlet hole, 12-air outlet groove, 121-air outlet hole, 13-valve core groove, 14-detection groove, 2-flow meter, 31-outer valve column, 311-driving groove, 312-air flow ring groove, 313-air flow hole, 32-inner valve core, 321-valve stem, 322-spring A, 323-limiting block, 324-sealing gasket C, 33-limiting column, 331-sealing gasket B, 41-cap, 42-screw, 421-dial block, 422-push plate, 43-buffer plate, 44-spring B, 51-sealing gasket A. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] like Figures 1 to 9 As shown, this embodiment provides a new type of micro-flow pressure-stabilizing valve for argon arc welding, including: a columnar valve body 1, a flowmeter 2 and a valve core structure; an air inlet groove 11 and an air outlet groove 12 are respectively provided on both sides of the columnar valve body 1; specifically, both ends of the air inlet groove 11 and the air outlet groove 12 are connected to the argon gas ventilation pipe of the argon arc welding, which is used to detect the outlet flow rate of the argon gas. A valve core groove 13 for installing the valve core structure is provided on the side of the columnar valve body 1; an air inlet hole 111 is provided at the bottom of the air inlet groove 11; an air outlet hole 121 is provided at the bottom of the air outlet groove 12; the air inlet hole 111 and the air outlet hole 121 are both connected to the valve core groove 13; the valve core groove 13 is connected to the air inlet hole 111 and the air outlet hole 121, so that the valve core structure can control the on-off of the gas and the size of the gas flow, which is convenient and practical. A detection groove 14 is provided on the side of the columnar valve body 1 ; a detection head of the flow meter 2 is matched and installed in the detection groove 14 for detecting the flow of argon gas passing through the gas outlet 121 ; the gas outlet groove 12 is connected to the detection groove 14 .

[0028] See also Figure 3 As shown, the valve core structure includes a valve core assembly and a drive assembly; the valve core assembly includes an outer valve column 31 and an inner valve core 32; the outer valve column 31 is threadedly installed in the valve core groove 13; a drive groove 311 is provided on the outer end surface of the valve core groove 13; a stepped hole is provided coaxially at the bottom of the drive groove 311; a limiting column 33 is installed matchingly at the wide part of the stepped hole; the inner valve core 32 is slidably installed at the narrow part of the stepped hole; the valve stem 321 connected to one end of the inner valve core 32 slides through the limiting column 33 and extends into the drive groove 311; an airflow annular groove 312 is provided coaxially on the outside of the outer valve column 31; The air flow annular groove 312 is symmetrically provided with air flow holes 313 which are connected with the narrow part of the stepped hole; the air flow annular groove 312 is respectively connected with the air inlet hole 111 and the air outlet hole 121; specifically, a spring A322 is sleeved on the outer side of the valve stem 321 and a limit block 323 is arranged at the end of the valve stem 321; in actual use, under the elastic force of the spring A322 in the natural state, the inner valve core 32 tightly supports the limit column 33 to achieve a tight sealing of the two air flow holes 313; when the valve stem 321 is pressed, the two air flow holes 313 are connected, that is, the air inlet hole 111 and the air outlet hole 121 are connected, so as to achieve comfortable and unobstructed ventilation.

[0029] See also Figures 3 to 6 As shown, the driving assembly includes a cap 41 and a screw 42; the cap 41 is threadedly connected to the outer valve column 31; the screw 42 is threadedly connected to the cap 41. Specifically, a shift block 421 is provided at the outer end of the screw 42; a push plate 422 is provided at the inner end of the screw 42; a buffer plate 43 is slidably installed in the cap 41; a spring B44 is passed between the buffer plate 43 and the push plate 422; when it is necessary to open the pressure regulating valve or adjust the ventilation airflow of the pressure regulating valve, it is only necessary to rotate the screw 42 forward or reversely, which is convenient and practical.

[0030] See also Figure 5 and Figure 6 As shown, the outer valve column 31 is sleeved with two sealing pads A51 and the two sealing pads A51 are located on both sides of the airflow ring groove 312 to ensure good sealing when the airflow flows. More specifically, the outer side of the limit column 33 is sleeved with a sealing pad B331; the outer side of the inner valve core 32 is sleeved with a sealing pad C324 to achieve good sealing when the airflow flows.

[0031] When the utility model is actually used, the air outlet 121 is arranged to be connected with the detection groove 14, and the flow meter 2 is installed in the detection groove 14, so as to realize accurate detection of the air flow rate; the valve core assembly is installed in the valve core groove 13 and the switch and the flow rate are controlled by the driving assembly; the flow meter 2 can be used to pre-adjust before argon arc welding to avoid argon gas waste during argon arc welding; the first gun of argon arc welding does not need to be deflated, saving more than 30% of welding gas.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A new type of micro-flow pressure regulating valve for argon arc welding, characterized in that: include: A columnar valve body (1), a flow meter (2) and a valve core structure; an air inlet groove (11) and an air outlet groove (12) are respectively provided on both sides of the columnar valve body (1); a valve core groove (13) for mounting the valve core structure is provided on the side of the columnar valve body (1); an air inlet hole (111) is provided at the bottom of the air inlet groove (11); an air outlet hole (121) is provided at the bottom of the air outlet groove (12); the air inlet hole (111) and the air outlet hole (121) are both in communication with the valve core groove (13); A detection groove (14) is provided on the side of the columnar valve body (1); the detection head of the flow meter (2) is matched and installed in the detection groove (14); and the air outlet groove (12) is connected to the detection groove (14).

2. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 1 is characterized in that: The valve core structure comprises a valve core assembly and a drive assembly; the valve core assembly comprises an outer valve column (31) and an inner valve core (32); the outer valve column (31) is threadedly installed in the valve core groove (13); a drive groove (311) is provided on the outer end surface of the valve core groove (13); a stepped hole is provided coaxially at the bottom of the drive groove (311); a limit column (33) is installed in a matching manner at the wide portion of the stepped hole; the inner valve core (32) is slidably installed in the narrow portion of the stepped hole; a valve stem (321) connected to one end of the inner valve core (32) slides through the limit column (33) and extends into the drive groove (311); An air flow annular groove (312) is coaxially formed on the outside of the outer valve column (31); the air flow annular groove (312) is symmetrically formed with air flow holes (313) that are connected to the narrow portion of the stepped hole; and the air flow annular groove (312) is respectively connected to the air inlet hole (111) and the air outlet hole (121).

3. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 2 is characterized in that: A spring A (322) is sleeved on the outside of the valve stem (321) and a limit block (323) is provided at the end of the valve stem (321).

4. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 3 is characterized in that: The drive assembly comprises a cover cap (41) and a screw rod (42); the cover cap (41) is threadedly connected to the outer valve column (31); and the screw rod (42) is threadedly connected to the cover cap (41).

5. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 4 is characterized in that: The outer end of the screw rod (42) is provided with a shifting block (421); the inner end of the screw rod (42) is provided with a push plate (422); a buffer plate (43) is slidably installed in the cover cap (41); a spring B (44) is passed between the buffer plate (43) and the push plate (422).

6. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 5, characterized in that: The outer valve column (31) is sleeved with two sealing gaskets A (51), and the two sealing gaskets A (51) are located on both sides of the airflow ring groove (312).

7. The novel micro-flow pressure-stabilizing valve for argon arc welding as claimed in claim 6, characterized in that: A sealing gasket B (331) is sleeved on the outer side of the limit column (33); and a sealing gasket C (324) is sleeved on the outer side of the inner valve core (32).

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