CN111306312A - A small diameter closed valve - Google Patents

Abstract

The invention belongs to the technical field of valves, and in particular relates to a small-diameter closed valve, comprising a valve body. The valve body is formed by detachably butting two half-valve bodies with the same structure. The small end of the valve body is welded with matching flanges, and the edge of the big end is provided with a number of connecting holes, the inner peripheral surface of the valve body is embedded with a matching sealing ring, and the valve body is also vertically provided with The valve stem is provided with a blade that is sleeved on the valve stem and closely fitted with the sealing ring. The blade is used to connect and disconnect the valve body. The handle of the valve stem is located at the butt joint of the two half valve bodies. The invention solves the technical problem of how to make the small-diameter airtight valve easy to disassemble and assemble, and can effectively improve its sealing performance and reduce the use cost, and has the advantages of low use cost, high resource utilization rate, convenient disassembly and assembly, and good sealing performance. Etc.

Description

A small diameter closed valve

technical field

The invention belongs to the technical field of valves, in particular to a small-diameter closed valve.

Background technique

Small-diameter closed valve is a kind of valve commonly used in industrial exhaust. The current small-diameter closed valve is mainly composed of an integrated valve body, a valve stem and a blade threaded on the valve stem. Obviously, it has the following defects: First, because the diameter of the valve body is too small, on the one hand, it makes the The valve stem and vane are inconvenient to disassemble and assemble; on the other hand, once the valve body is partially damaged, the entire valve body needs to be replaced, resulting in high cost of use and low resource utilization. Second, because the vane and valve stem are connected by bolts, so The blade is easy to loosen and the sealing effect is poor.

SUMMARY OF THE INVENTION

In view of the shortcomings of the background technology, the present invention provides a small-diameter closed valve, and the technical problem it solves is how to make the small-diameter closed valve easy to disassemble and assemble, and to effectively improve its sealing performance and reduce the use cost.

In order to solve the above technical problems, the present invention provides the following technical solutions:

A small-diameter airtight valve, comprising a valve body, the valve body is formed by detachably butting two half-valve bodies with the same structure, the half-valve body is a stepped cone-shaped sleeve, and the half-valve body is The small ends are welded with matching flanges, and the edge of the large end is provided with a number of connecting holes, the inner peripheral surface of the valve body is embedded with a matching sealing ring, and the valve body is also vertically arranged. There is a valve stem, and a vane sleeved on the valve stem and closely fitting with the sealing ring is provided, the vane is used to connect and disconnect the valve body, and one end of the valve stem slides out of the The sealing ring and the valve body are provided with a handle for driving the rotation of the valve stem, and the passage of the valve stem is located at the butt joint of the two half-valve bodies.

In an implementation of the present invention, the connection holes are bolt holes and are evenly distributed, and the corresponding bolt holes are connected by bolt threads.

In an implementation of the present invention, the handle includes a horizontal portion and a handle portion connected to the horizontal portion obliquely upward, the handle is horizontally sleeve welded on the valve stem through the horizontal portion, and is hinged There is a base that fits with the bottom surface of the horizontal part, and the base is screwed to the valve body.

In an implementation of the present invention, the base includes a hinge block and a pair of connecting blocks symmetrically connected to the hinge block downwards, the connecting blocks are respectively connected with the valve body threadedly, and the horizontal portion is hinged on the hinged block.

In an implementation of the present invention, the hinge block is provided with a hinge hole at the hinge point, and is connected downward with a rivet nut matching the hinge hole, and the horizontal portion is provided with the hinge hole The corresponding limit through groove is used to prevent the handle from rotating without force, and the horizontal part is hinged on the On the hinge block, the butterfly screw is connected to the rivet nut through the limit through groove and the hinge hole in sequence.

In an implementation of the present invention, bushings are respectively sleeved on the valve stem extending out of the sealing ring.

In an implementation of the present invention, the blade is covered with a high-temperature anti-corrosion layer.

In an implementation of the present invention, the sealing ring is made of high-temperature and anti-corrosion material.

In an implementation of the present invention, the valve stem and the vane are integrally formed, and the valve stem, the vane and the valve body are all made of high temperature resistant stainless steel.

In an implementation of the present invention, an observation window is provided on the valve body.

Compared with the prior art, the present invention has the following beneficial effects: by setting the valve body to be composed of two half-valve bodies that can be detachably butted, on the one hand, the technical effect of convenient disassembly and assembly of the small-diameter sealing valve is realized; The half valve body can be replaced, thereby achieving the beneficial effect of effectively reducing the use cost and saving resources; and by embedding a matching sealing ring on the inner peripheral surface of the valve body, and making the blade sleeve on the valve stem, so as to achieve The technical effect of effectively improving the sealing performance of the small-diameter sealing valve. Compared with the prior art, the utility model has the advantages of convenient installation, good sealing performance, effectively reducing the use cost, and improving the utilization rate of resources.

Description of drawings

The present invention has the following accompanying drawings:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the exploded view of the present invention;

Fig. 3 is the structural representation of the half valve body in the present invention;

Fig. 4 is the structural representation of the base in the present invention;

FIG. 5 is a schematic view of the structure of the handle in the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, Figure 2, Figure 3, Figure 4 and Figure 5: a small-diameter closed valve, including a valve body 1, the valve body 1 is formed by two half-valve bodies 21 with the same structure being detachably butted together, On the one hand, this arrangement facilitates the disassembly and assembly of the device; on the other hand, the valve body 1 can be partially replaced, thereby realizing the beneficial effects of convenient disassembly and assembly, effectively reducing the use cost and saving resources; the half valve body 21 is in the shape of a stepped cone. The small end of the half valve body 21 is welded with a matching flange 3, and a plurality of connecting holes 4 are opened on the edge of the large end. In this embodiment, the connecting holes 4 are bolt holes and are evenly distributed , the corresponding bolt holes are connected by bolt threads. A matching sealing ring 5 is embedded on the inner peripheral surface of the valve body 1 , a valve stem 6 is also vertically arranged in the valve body 1 , and a blade is sleeved on the valve stem 6 and closely fitted with the sealing ring 5 . 7. The blade 7 is used to connect and disconnect the valve body 1. One end of the valve stem 6 slides out of the sealing ring 5 and the valve body 1 in turn, and is provided with a handle 8 that drives the valve stem 6 to rotate. The butt joint of the half valve body 21 .

In an embodiment of the present invention, the handle 8 includes a horizontal portion 81 and a handle portion 82 connected to the horizontal portion 81 obliquely upward. The bottom surface of the part 81 is in contact with the base 9, and the base 9 is threadedly connected to the valve body 1, which prolongs the service life of the handle 8 and makes the user's rotation more labor-saving.

In an embodiment of the present invention, the base 9 includes a hinge block 91 and a pair of connecting blocks 92 symmetrically connected to the hinge block 91 downward. The connecting blocks 92 are respectively connected with the valve body 1 by screw threads, and the horizontal portion 81 is hinged on the hinge blocks. 91 , this arrangement achieves the technical effect of stably supporting the base 9 .

In an embodiment of the present invention, the hinge structure of the horizontal portion 81 and the hinge block 91 is as follows: the hinge block 91 is provided with a hinge hole 911 at the hinge point, and is connected downward with a rivet nut 912 matching the hinge hole 911, The horizontal part 81 is provided with a limit through slot 811 corresponding to the hinge hole 911 , and the limit through slot 811 is used to prevent the handle 8 from rotating without force. The butterfly screw 812 is hinged on the hinge block 91 , and the butterfly screw 812 is connected to the rivet nut 912 through the limiting through groove 811 and the hinge hole 911 in sequence.

In an embodiment of the present invention, the valve stem 6 is respectively sleeved with bushings 10 at the place protruding from the sealing ring 5, which prolongs the service life on the one hand, and further improves the sealing performance of the device on the other hand.

In an embodiment of the present invention, the blade 7 is covered with a high-temperature anti-corrosion layer, and the sealing ring 5 is made of a high-temperature anti-corrosion material, so that the device can meet the requirements of anti-corrosion and fire prevention, and effectively expand its use range .

In an embodiment of the present invention, the valve stem 6 and the vane 7 are integrally formed, and the valve stem 6, the vane 7 and the valve body 1 are all made of high-temperature resistant stainless steel. This arrangement effectively avoids the problem of loosening of the vane 7, so that the vane 7 and the valve body 1 are made of high temperature resistant stainless steel. The linkage of the valve stem 6 is good.

In an embodiment of the invention, the valve body 1 is provided with an observation window, which facilitates observation of the inside of the valve body 1 .

To sum up, in the present invention, the valve body 1 is composed of two half-valve bodies 21 that can be detachably butt The rod 6 is integrally formed and closely fitted with the sealing ring 5 , so that the present invention has the advantages of low use cost, high resource utilization rate, convenient disassembly and assembly, and good sealing performance.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a small-bore airtight valve, includes the valve body, its characterized in that, the valve body is formed by the butt joint of two semi-valve body detachably that the structure is the same, the semi-valve body is the sleeve of ladder round platform form, all weld on the tip of semi-valve body has the assorted flange, and has seted up a plurality of connecting holes on the edge of its main aspects, inlay on the inner peripheral surface of valve body and be equipped with the assorted sealing washer, it is vertical still to be equipped with the valve rod in the valve body, and be equipped with the suit on the valve rod and with the blade that the sealing washer is closely laminated, the blade is used for the break-make the valve body, the one end of valve rod slides in proper order and wears out the sealing washer with the valve body, and be equipped with the transmission valve rod pivoted.

2. The small-caliber closing valve according to claim 1, wherein the connecting holes are bolt holes and are evenly distributed, and the corresponding bolt holes are connected through bolt threads.

3. The small-caliber airtight valve as defined in claim 1, wherein said handle comprises a horizontal portion and a handle portion connected to said horizontal portion in an inclined upward direction, said handle is horizontally sleeved on said valve stem through said horizontal portion and hinged to a base attached to a bottom surface of said horizontal portion, said base is screwed to said valve body.

4. The small-caliber sealing valve as claimed in claim 3, wherein the base comprises a hinge block and a pair of connecting blocks symmetrically connected to the hinge block downward, the connecting blocks are respectively connected with the valve body by screw threads, and the horizontal part is hinged to the hinge block.

5. The small-caliber airtight valve as claimed in claim 4, wherein the hinge block is provided with a hinge hole at the hinge position and is connected with a rivet nut matched with the hinge hole downward, the horizontal portion is provided with a limiting through groove corresponding to the hinge hole, the limiting through groove is used for preventing the handle from rotating without being stressed, the horizontal portion is hinged on the hinge block through a butterfly screw matched with the rivet nut, and the butterfly screw sequentially passes through the limiting through groove and the hinge hole to be connected with the rivet nut.

6. The small-bore sealing valve according to claim 1, wherein said valve stem is sleeved with a bushing extending beyond said sealing ring.

7. The small-caliber closing valve as in claim 1, wherein the blade is coated with a high temperature resistant corrosion protection layer.

8. A small-bore containment valve according to claim 1 wherein said sealing ring is made of a high temperature resistant, corrosion resistant material.

9. The small-caliber closing valve according to claim 1, wherein the valve stem and the blade are integrally formed, and the valve stem, the blade and the valve body are made of high-temperature-resistant stainless steel.

10. The small-caliber closing valve as in claim 1, wherein the valve body is provided with a viewing window.

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