Riveting type gas cut-off valve

Abstract

The utility model discloses a riveting type gas cut-off valve. The riveting type gas cut-off valve comprises a valve cover and a valve seat used for installing the valve cover, the valve seat is provided with an annular connecting table top, a sealing face connected with the connecting table top and a lower limiting portion integrated with the valve seat, the valve cover is provided with an upper installing portion and an installing column, the upper installing portion protrudes out of the valve cover in the radial direction, and the upper installing portion is annularly arranged on the valve cover. The lower end face of the upper installation part is attached to the connecting table top, the upper installation part and the connecting table top are coaxially arranged, the upper end face of the upper installation part is attached to the lower end face of the lower limiting part, the inner side wall of the lower limiting part is attached to the outer side wall of the upper installation part, and the lower limiting part is formed by extruding and bending after the valve seat extends. The sealing face is located on the side, close to the center of the valve seat, of the connecting table top, a first sealing ring is installed on the installation column, and the outer side of the first sealing ring is attached to the sealing face. The valve cover and the valve seat of the riveted gas cut-off valve can be installed in a riveting mode, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas valve technical field, in particular to a riveting type gas cut -off valve. BACKGROUND

[0002] The existing valve seat and valve cover usually adopt screw fastening, usually need four screws fastening, need workers to twist four times each time to be able to fix the valve cover to the valve seat, lead to single valve assembly time is long, and need to punch when processing valve seat and valve cover, and additional time is needed for punching, increase the processing time for processing valve and valve cover, further increase the whole manufacturing time of valve. SUMMARY

[0003] The utility model provides a riveting type gas cut -off valve that can be quickly assembled.

[0004] To solve the above problem, the utility model provides a riveting type gas cut -off valve, the riveting type gas cut -off valve includes the valve cover and be used for installing the valve cover valve seat, be provided with annular connection mesa on the valve seat, the sealing surface connected with the connection mesa and the lower limit part integrated with the valve seat, be provided with upper installation part and installation column on the valve cover, the upper installation part is protruding from the valve cover, the upper installation part is annularly arranged on the valve cover, the lower end surface of the upper installation part is attached on the connection mesa, and the upper installation part is coaxially arranged with the connection mesa, the upper end surface of the upper installation part is attached with the lower end surface of the lower limit part, the inner side wall of the lower limit part is attached with the outer side wall of the upper installation part, the lower limit part is formed by extrusion bending after the valve seat extends, the sealing surface is located at the side of the connection mesa close to the center of the valve seat, the first sealing ring is installed on the installation column, and the outer side of the first sealing ring is attached with the sealing surface.

[0005] Further, the top surface of the upper installation part is connected with the side wall of the upper installation part through the guide inclined surface, which facilitates the bending direction of the upper limit part during compression.

[0006] Further, the lower limit part is annular, which improves the limiting capacity.

[0007] Further, the sealing surface is provided with a chamfer at the connection with the connection mesa, which facilitates the insertion of the installation column into the sealing surface.

[0008] Further, the outer wall of the installation column is provided with a chamfer, which facilitates the installation of the second sealing ring.

[0009] Further, the valve cover is provided with a mounting groove, a second sealing ring is arranged in the mounting groove, the valve rod is slidingly arranged in the second sealing ring, and the second sealing ring is in interference fit with the valve rod, a through hole is arranged in the groove bottom of the mounting groove, the upper end of the valve rod is arranged outside the valve cover through the through hole, and the plugging assembly is arranged on the valve rod and used for cooperating with the valve seat to open and close the gas.

[0010] Further, the valve seat is provided with an inlet channel and an outlet channel, a sealing boss is arranged at the connection position of the inlet channel and the outlet channel, the sealing boss is used for cooperating with the plugging assembly, the inlet channel and the outlet channel are disconnected when the sealing boss is in abutment with the plugging assembly, and the inlet channel and the outlet channel are communicated when the sealing boss is separated from the plugging assembly.

[0011] Further, a limiting step is arranged in the valve cover and used for limiting the upward movement of the plugging assembly.

[0012] Further, a gasket and an upper limiting part are arranged, the upper limiting part is arranged on the valve cover, the gasket is used for isolating the upper limiting part and the second sealing ring, and the upper limiting part is used for fixing the gasket and the second sealing ring on the valve cover, so that the gasket and the second sealing ring cannot fall off.

[0013] Further, the upper limiting part is formed by extrusion and bending after the valve cover is extended, and the gasket and the second sealing ring can be fixed in the mounting groove by using equipment, so that the installation efficiency is improved.

[0014] The riveting type gas cut-off valve is used for realizing sealing of the valve cover and the valve seat by cooperation of the first sealing ring, the sealing surface and the mounting column, fixing the upper mounting part by cooperation of the connecting table surface and the limiting part, fixing the valve cover on the valve seat, forming the lower limiting part by extrusion and bending after the valve seat is extended, fixing the valve cover and the valve seat by riveting, and only needing to press the lower limiting part on the upper mounting part by using equipment, so that the valve cover and the valve seat are fixed without screwing, mechanical assembly is adopted, manpower cost is reduced, the valve cover and the valve seat can be quickly assembled without punching, the process is reduced, the processing time is shortened, and the whole manufacturing time of the valve is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of a preferable implementation manner of the riveting type gas cut-off valve.

[0016] Figure 2 is a structure schematic view of the valve seat.

[0017] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 4.

[0018] Figure 4 is a structural schematic view of the valve cover.

[0019] Figure 5 is Figure 4 is a partial enlarged view of B in the figure.

[0020] Figure 6 is a structural schematic view of the valve cover before the valve stem is installed.

[0021] Figure 7 is a structural schematic view of the valve cover before the valve stem is installed.

[0022] The meanings of the various reference numerals in the drawings are as follows:

[0023] Valve cover 1, annular upper enclosing barrier 10, upper mounting portion 11, mounting column 12, guide inclined surface 13, mounting groove 14, through hole 15, upper limiting portion 16, limiting step 17, valve seat 2, annular lower enclosing barrier 20, air inlet channel 21, air outlet channel 22, connecting table surface 23, sealing surface 24, lower limiting portion 25, sealing anti-disengagement plane 26, valve stem 3, plugging assembly 4, first sealing ring 5, second sealing ring 6, gasket 7. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings.

[0025] As Figure 1 shown, the preferable implementation of the riveting type gas shut-off valve of the utility model includes a valve cover 1, a valve seat 2, a valve stem 3 and a plugging assembly 4, the valve cover 1 is installed on the valve seat 2, the valve cover 1 is fixed with the valve seat 2 to form a containing cavity, the valve stem 3 is arranged in the valve cover 1, the valve stem 3 can slide on the valve cover 1, the plugging assembly 4 is fixed on the valve stem 3, the plugging assembly 4 is located in the containing cavity, the valve seat 2 has an air inlet channel 21 and an air outlet channel 22, the air inlet channel 21 and the air outlet channel 22 are communicated, and the plugging assembly 4 is used to plug the air inlet channel 21 and the air outlet channel 22 to disconnect the air inlet channel 21 and the air outlet channel 22.

[0026] As Figure 2 and Figure 3As shown, the valve seat 2 is provided with an annular connecting platform 23, a sealing surface 24 and a lower limiting portion 25. The connecting platform 23 faces upward, the sealing surface 24 is vertically arranged, the connecting platform 23 is connected with the sealing surface 24, the sealing surface 24 is located on the side of the connecting platform 23 close to the center of the valve seat 2, the connecting platform 23 is used for mounting the valve cover 1, that is, the valve cover 1 has a surface adhering to the connecting platform 23, the sealing surface 24 is used for cooperating with the first sealing ring 5 arranged on the valve cover 1 to seal the connection position between the valve cover 1 and the valve seat 2, so as to ensure that the connection position between the valve cover 1 and the valve seat 2 does not leak gas. The lower limiting portion 25 is used for limiting the valve cover 1 on the connecting platform 23, so as to realize the connection and fixation of the valve cover 1 and the valve seat 2; the lower limiting portion 25 is integrated with the valve seat 2, which is convenient for processing and manufacturing; the lower limiting portion 25 is formed by extruding and bending after extending from the valve seat 2, specifically, the valve seat 2 is extended to form an annular lower surrounding barrier 20 (as shown in Figure 6 The sealing surface 24 is connected with a sealing anti-falling flat surface 26, the sealing anti-falling flat surface 26 is perpendicular to the sealing surface 24, the sealing anti-falling flat surface 26 is located on the side of the sealing surface 24 close to the center of the valve seat 2, and is used for limiting the position of the downward movement of the first sealing ring 5, so as to prevent the first sealing ring 5 from completely falling off and causing sealing failure. The center of the sealing anti-falling flat surface 26 is concave downward to form a lower containing space, the gas inlet channel 21 and the gas outlet channel 22 are communicated through the lower containing space, the blocking assembly 4 moves downward in the lower containing space to block the gas outlet channel 22, so as to disconnect the gas inlet channel 21 and the gas outlet channel 22, and realize the cutting-off.

[0027] As Figure 4 And Figure 5As shown, the valve cover 1 is provided with an upper mounting portion 11 and a mounting column 12, the upper mounting portion 11 protrudes radially from the valve cover 1, the upper mounting portion 11 is annularly arranged on the valve cover 1, the upper mounting portion 11 is integrated with the valve cover 1, facilitating machining and manufacturing; the lower end surface of the upper mounting portion 11 is attached to the connecting table surface 23, the upper mounting portion 11 is coaxially arranged with the connecting table surface 23, the upper end surface of the upper mounting portion 11 is attached to the lower end surface of the lower limiting portion 25, the inner side wall of the lower limiting portion 25 is attached to the outer side wall of the upper mounting portion 11, thus ensuring that the valve cover 1 will not shake on the connecting table surface 23, improving the stability of the installation. The first sealing ring 5 is sleeved on the mounting column 12, and the outer side of the first sealing ring 5 is attached to the sealing surface 24 to form a seal. The top surface of the upper mounting portion 11 is connected to the side wall of the upper mounting portion 11 through the guide inclined surface 13, which facilitates the bending deformation of the annular lower surrounding fence 20 to provide a space for the bending deformation of the annular lower surrounding fence 20, and further guides the annular lower surrounding fence 20 to bend to form the lower limiting portion 25. The outer wall of the mounting column 12 is provided with a chamfer, which can better sleeve the first sealing ring 5 into the upper mounting portion 11 when sleeving the first sealing ring 5, improving the installation efficiency. The chamfer is arranged at the connecting portion of the sealing surface 24 and the connecting table surface 23, so that when the mounting column 12 is inserted into the ring formed by the sealing surface 24, the mounting column 12 and the sealing ring can be better inserted, improving the installation efficiency. The valve cover 1 is provided with a limiting step 17, which is used to limit the upward movement of the plugging assembly 4.

[0028] The valve cover 1 is further provided with a mounting groove 14, and a through hole 15 is arranged in the groove bottom of the mounting groove 14, and the diameter of the through hole 15 is adapted to the valve rod 3, that is, substantially consistent, and the upper end of the valve rod 3 is located outside the valve cover 1 through the through hole 15. The diameter of the mounting groove 14 is larger than the diameter of the valve rod 3, so that the second sealing ring 6 can be mounted in the mounting groove 14, the valve rod 3 is slidably arranged in the second sealing ring 6, and the second sealing ring 6 is in interference fit with the valve rod 3, so that the valve rod 3 can move in the second sealing ring 6 while achieving the sealing effect, ensuring that the gas cannot leak from the connection between the valve rod 3 and the valve rod 3, and improving the safety. The second sealing ring 6 is two, and the two second sealing rings 6 overlap to improve the sealing effect. In other embodiments, the number of the second sealing ring 6 can be increased or decreased according to requirements. The valve cover 1 is provided with an upper limiting portion 16, the upper limiting portion 16 is integrated with the valve cover 1, and the upper limiting portion 16 is convenient for processing and manufacturing. A gasket 7 is further arranged in the mounting groove 14, and the gasket 7 is used to separate the upper limiting portion 16 and the second sealing ring 6, that is, the upper end surface of the gasket 7 abuts against the second sealing ring 6, and the lower end surface of the gasket 7 abuts against the upper limiting portion 16; the upper limiting portion 16 is used to fix the gasket 7 and the second sealing ring 6 on the valve cover 1, so as to ensure that the gasket 7 and the second sealing ring 6 cannot fall off. The upper limiting portion 16 is formed by extrusion and bending of the valve cover 1 after extension, specifically, the upper limiting portion 16 has an upper surrounding barrier (as shown in the figure) formed by extension of the valve cover 1, and the annular upper surrounding barrier 10 is bent to the center to form the upper limiting portion 16 under the extrusion of the equipment. Figure 7 The lower limiting portion 25 is formed by extrusion and bending of the valve seat 2 after extension, and the lower annular surrounding barrier on the valve seat 2 can be extruded to form the lower limiting portion 25 by using the equipment, that is, the valve cover 1 can be fixed on the valve seat 2 by pressing rivets, without screwing, so that the valve cover 1 and the valve seat 2 can be quickly assembled, and the manufacturing time of the valve cover 1 and the valve seat 2 is shortened, thereby reducing the whole manufacturing time of the valve.

[0029] The first sealing ring 5 can ensure that the connection position of the valve cover 1 and the valve seat 2 is in a sealed state, so as to ensure that the gas cannot leak and the safety is high. The second sealing ring 6 is arranged between the valve rod 3 and the valve cover 1, so as to ensure that the gas cannot leak between the valve rod 3 and the valve cover 1.

[0030] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures made by using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also within the patent protection range of the utility model.

Claims

1. A riveted gas shut-off valve, characterized in that: The device includes a valve cover and a valve seat for mounting the valve cover. The valve seat has an annular connecting platform, a sealing surface connected to the connecting platform, and a lower limiting portion integral with the valve seat. The valve cover has an upper mounting portion and a mounting post. The upper mounting portion protrudes radially from the valve cover and is circumferentially disposed on the valve cover. The lower end face of the upper mounting portion is attached to the connecting platform and is coaxially arranged with the connecting platform. The upper end face of the upper mounting portion is attached to the lower end face of the lower limiting portion. The inner sidewall of the lower limiting portion is attached to the outer sidewall of the upper mounting portion. The lower limiting portion is formed by extending from the valve seat and bending it. The sealing surface is located on the side of the connecting platform near the center of the valve seat. A first sealing ring is mounted on the mounting post, and the outer side of the first sealing ring is attached to the sealing surface.

2. The riveted gas shut-off valve as described in claim 1, characterized in that: The top surface of the upper mounting part is connected to the side wall of the upper mounting part by a guide slope.

3. The riveted gas shut-off valve as described in claim 1, characterized in that: The lower limit portion is annular.

4. The riveted gas shut-off valve as described in claim 1, characterized in that: The sealing surface and the connecting platform surface are chamfered.

5. The riveted gas shut-off valve as described in claim 1, characterized in that: The outer wall of the mounting column is chamfered.

6. The riveted gas shut-off valve as described in claim 1, characterized in that: It also includes a valve stem, a sealing assembly, and a second sealing ring. The valve cover is provided with a mounting groove, the second sealing ring is disposed in the mounting groove, the valve stem is slidably disposed in the second sealing ring, and the second sealing ring is interference-fitted with the valve stem. The bottom of the mounting groove is provided with a through hole, the upper end of the valve stem passes through the through hole and is located outside the valve cover, and the sealing assembly is disposed on the valve stem. The sealing assembly is used to cooperate with the valve seat to switch on and off the gas supply.

7. The riveted gas shut-off valve as described in claim 6, characterized in that: The valve seat has an air inlet channel and an air outlet channel. A sealing boss is provided at the connection between the air inlet channel and the air outlet channel. The sealing boss cooperates with the sealing assembly. When the sealing boss is in contact with the sealing assembly, the air inlet channel and the air outlet channel are disconnected. When the sealing boss is separated from the sealing assembly, the air inlet channel and the air outlet channel are connected.

8. The riveted gas shut-off valve as described in claim 6, characterized in that: The valve cover is provided with a limiting step to restrict the upward movement of the sealing component.

9. The riveted gas shut-off valve as described in claim 6, characterized in that: It also includes a gasket and an upper limit position, the upper limit position being disposed on the valve cover, the gasket being used to isolate the upper limit position and the second sealing ring, and the upper limit position being used to fix the gasket and the second sealing ring on the valve cover.

10. The riveted gas shut-off valve as described in claim 9, characterized in that: The upper limit portion is formed by extending the valve cover and then bending it.

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