CN218598837U - Threaded stop valve - Google Patents

Abstract

The utility model relates to a stop valve, in particular to a thread stop valve, which comprises a shell arranged outside, a feed inlet arranged on one side of the bottom of the shell, a valve core arranged in the middle of the inner side of the shell, a discharge outlet arranged on the other side of the bottom of the shell, a valve rod with threads arranged on the top of the valve core, and a rotating ring arranged on the top of the valve rod, and also comprises a guide ring and a positioning mechanism, wherein the positioning mechanism is arranged on the outer side of the top of the valve rod; positioning mechanism includes end piece, second external screw thread section of thick bamboo and screw ring, and the end piece is fixed at the top of casing, and the welding of one side of end piece has the connecting block, and the top of connecting block is provided with the internal thread section of thick bamboo of cup jointing on the valve rod, and the inside of internal thread section of thick bamboo has connect first external screw thread section of thick bamboo soon, and the top of first external screw thread section of thick bamboo is provided with spacing dish, and first external screw thread has been seted up on the surface of spacing dish, and the bottom mounting at swivel becket middle part has the second external screw thread section of thick bamboo, the utility model discloses novel structure thinks about ingeniously, and accessible screw ring restriction valve rod is the swivel becket and rotates, can prevent effectively that the case aperture from changing.

Description

Threaded stop valve

Technical Field

The utility model relates to a stop valve specifically is a screw stop valve.

Background

The thread stop valve is one of the most widely used valves, and the closing principle of the thread stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of a valve lever, so that the purpose of preventing media from flowing is achieved. In the transport of ammonia, the stop valve is widely used for controlling gaseous flow and flow, because the stop valve when opening, the valve rod of stop valve rotates easily for the valve rod can drive valve clack synchronous motion when being touched the back and taking place to rotate, thereby makes the aperture area of stop valve change, can cause the influence to the transport flow of ammonia, in view of this, we provide an external screw thread stop valve for ammonia.

For this purpose, application numbers of: 202120512960.1 stop valve for external screw thread ammonia can be better solve above-mentioned technical problem, but current screw thread stop valve structure is comparatively complicated when rotating the restriction to the valve rod, is unfavorable for spacing to the valve rod, is unfavorable for using.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a screw stop valve, the effectual current screw stop valve of having solved structure is comparatively complicated when rotating the restriction to the valve rod, is unfavorable for spacing to the valve rod, is unfavorable for the problem of using.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model comprises a shell arranged outside, a feed inlet arranged on one side of the bottom of the shell, a valve core arranged on the middle part of the inner side of the shell, a discharge outlet arranged on the other side of the bottom of the shell, a valve rod with threads arranged on the top of the valve core, a rotating ring arranged on the top of the valve rod, a guide ring and a positioning mechanism, wherein the positioning mechanism is arranged on the outer side of the top of the valve rod;

positioning mechanism includes the end piece, the connecting block, an internal thread section of thick bamboo, a first external screw thread section of thick bamboo, spacing dish, first external screw thread, the screw hole, a second external screw thread section of thick bamboo and screw ring, the top at the casing is fixed to the end piece, the welding of one side of end piece has the connecting block, the top of connecting block is provided with the internal thread section of thick bamboo of cup jointing on the valve rod, the inside of an internal thread section of thick bamboo has connect a first external screw thread section of thick bamboo soon, the top of a first external screw thread section of thick bamboo is provided with spacing dish, first external screw thread has been seted up on the surface of spacing dish, the bottom mounting at swivel ring middle part has a second external screw thread section of thick bamboo, the second external screw thread section of thick bamboo top spin has connect the screw ring.

Preferably, the connecting block is an arc-shaped block.

Preferably, a guide ring is installed at the top end of the inner side of the shell, and a through hole is formed in the position, corresponding to the valve rod, of the guide ring.

Preferably, the first external thread cylinder and the position of the limiting disc corresponding to the valve rod are provided with threaded holes.

Preferably, the first external thread and the second external thread cylinder have the same thread diameter.

Preferably, the top of spacing dish is provided with square piece, and the through-hole that supplies the valve rod to pass through is seted up at the middle part of square piece.

Preferably, the surface of the rotating ring 6 is provided with anti-skid grains.

Has the beneficial effects that: the utility model discloses during the use, when using the case, rotate first external screw thread section of thick bamboo to the internal thread section of thick bamboo in through spacing dish, rotate the swivel becket again, the swivel becket rotates and drives the valve rod and rotate, under the cooperation of screw thread and screw hole on the valve rod, make the valve rod remove in first external screw thread section of thick bamboo, the valve rod removes and drives the case and remove, and then the flow between adjustment feed inlet and the discharge gate, adjust to suitable position after, upwards roll out first external screw thread section of thick bamboo in by the screw thread section of thick bamboo through spacing dish, make spacing dish on the screw thread section of thick bamboo support on the second external screw thread section of thick bamboo, at this moment, the screw thread ring on the second external screw thread section of thick bamboo rotate to spacing dish and second external screw thread section of thick bamboo junction can, the swivel becket rotates promptly through the screw thread ring restriction valve rod, can effectively prevent that the case aperture from changing.

The utility model discloses novel structure thinks about ingeniously, and accessible screw ring restriction valve rod is the swivel becket and rotates, can prevent effectively that the case aperture from changing.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall cross-sectional three-dimensional structure of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a side view of the present invention;

FIG. 4 is a schematic view of the structure A of FIG. 2 according to the present invention;

fig. 5 is a schematic three-dimensional structure diagram of the first external thread cylinder and the limiting disc of the present invention;

reference numbers in the figures: 1. a housing; 2. a feed inlet; 3. a valve core; 4. a discharge port; 5. a valve stem; 6. a rotating ring; 7. a guide ring; 8. a positioning mechanism; 801. a bottom block; 802. connecting blocks; 803. an internal thread cylinder; 804. a first externally threaded barrel; 805. a limiting disc; 806. a first external thread; 807. a threaded hole; 808. a second externally threaded barrel; 809. a threaded ring.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to fig. 1-5.

The first embodiment is given by fig. 1-5, the utility model provides a screw stop valve, which comprises a shell 1 arranged outside, a feed inlet 2 arranged at one side of the bottom of the shell 1, a valve core 3 arranged at the middle part of the inner side of the shell 1, a discharge outlet 4 arranged at the other side of the bottom of the shell 1, a valve rod 5 with threads at the top arranged at the top of the valve core 3, a rotating ring 6 arranged at the top of the valve rod 5, a guide ring 7 and a positioning mechanism 8, wherein the positioning mechanism 8 is arranged at the outer side of the top of the valve rod 5;

the positioning mechanism 8 comprises a bottom block 801, a connecting block 802, an internal thread cylinder 803, a first external thread cylinder 804, a limiting disc 805, first external threads 806, a threaded hole 807, a second external thread cylinder 808 and a threaded ring 809, the bottom block 801 is fixed at the top of the shell 1, the connecting block 802 is welded on one side of the bottom block 801, the top end of the connecting block 802 is provided with the internal thread cylinder 803 sleeved on the valve rod 5, the first external thread cylinder 804 is screwed in the internal thread cylinder 803, the top end of the first external thread cylinder 804 is provided with the limiting disc 805, the first external threads 806 are formed in the surface of the limiting disc 805, the bottom end of the middle part of the rotating ring 6 is fixed with the second external thread cylinder 808, and the threaded ring 809 is screwed in the second external thread cylinder 808.

When in specific use: the utility model discloses during the use, when using case 3, rotate first external screw thread section of thick bamboo 804 to internal thread section of thick bamboo 803 through spacing dish 805, rotate swivel ring 6 again, swivel ring 6 rotates and drives valve rod 5 and rotate, screw thread on the valve rod 5 and screw hole 807's cooperation is down, make valve rod 5 remove in first external screw thread section of thick bamboo 804, valve rod 5 removes and drives case 3 and remove, and then the flow between adjustment feed inlet 2 and the discharge gate 4, adjust to suitable position after, upwards roll out first external screw thread section of thick bamboo 804 in by screw thread section of thick bamboo 803 through spacing dish 805, make spacing dish 805 on the screw thread section of thick bamboo 803 support on second external screw thread section of thick bamboo 808, at this moment, with the screw ring 809 on the second external screw thread section of thick bamboo 808 rotate to spacing dish 805 and second external screw thread section of thick bamboo 808 junction can, restrict valve rod 5 through screw ring 809 and be that swivel ring 6 rotates, can effectively prevent that case 3 aperture from changing.

Has the advantages that: the utility model discloses novel structure, the design is ingenious, and accessible screw ring 809 limits valve rod 5 and swivel becket 6 rotates promptly, can prevent effectively that 3 apertures of case from changing.

Example two

In the first embodiment, the internally threaded barrel 803 is inconvenient to fix, and referring to fig. 3, as another preferred embodiment, the difference from the first embodiment is that the connecting block 802 is an arc-shaped block, so that the internally threaded barrel 803 can be fixed conveniently through the connecting block 802.

EXAMPLE III

Referring to fig. 1, as another preferred embodiment, the difference from the first embodiment is that a guide ring 7 is installed at the top end of the inner side of the housing 1, and a through hole is formed in a position of the guide ring 7 corresponding to the valve rod 5, so that the valve rod 5 has better stability.

Example four

Referring to fig. 1, as another preferred embodiment, the difference between the first preferred embodiment and the first embodiment is that threaded holes 807 are formed in positions of the first external thread cylinder 804 and the limiting disc 805 corresponding to the valve rod 5, so that the valve rod 5 is convenient to mount and use.

EXAMPLE five

The first external thread 806 is not convenient to be matched with the second external thread barrel 808 in the first embodiment, and referring to fig. 4, as another preferred embodiment, the difference from the first embodiment is that the thread diameters of the first external thread 806 and the second external thread barrel 808 are the same, so that the first external thread 806 and the second external thread barrel 808 can be conveniently matched for use.

EXAMPLE six

In the first embodiment, the limiting disc 805 is not convenient to rotate, not shown in the figure, and as another preferred embodiment, the difference from the first embodiment is that a square block is arranged at the top end of the limiting disc 805, a through hole for the valve rod 5 to pass through is formed in the middle of the square block, so that the limiting disc 805 can rotate conveniently, and the thickness of the square block cannot exceed the height of the threaded ring 809.

EXAMPLE seven

Referring to fig. 1, as another preferred embodiment, the difference between the first embodiment and the second embodiment is that the surface of the rotating ring 6 is provided with anti-slip threads, so that the rotating ring 6 has better anti-slip performance.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a screw thread stop valve, includes casing (1) that the outside set up, feed inlet (2) that casing (1) bottom one side set up, case (3) that casing (1) inboard middle part set up, discharge gate (4) that casing (1) bottom opposite side set up, and swivel ring (6) that top area screwed valve rod (5) and valve rod (5) top set up, its characterized in that of case (3) top: the valve rod is characterized by further comprising a guide ring (7) and a positioning mechanism (8), wherein the positioning mechanism (8) is arranged on the outer side of the top of the valve rod (5);

the positioning mechanism (8) comprises a bottom block (801), a connecting block (802), an internal thread cylinder (803), a first external thread cylinder (804), a limiting disc (805), first external threads (806), a threaded hole (807), a second external thread cylinder (808) and a threaded ring (809), wherein the bottom block (801) is fixed at the top of the shell (1), the connecting block (802) is welded at one side of the bottom block (801), the internal thread cylinder (803) sleeved on the valve rod (5) is arranged at the top end of the connecting block (802), the first external thread cylinder (804) is screwed in the internal part of the internal thread cylinder (803), the limiting disc (805) is arranged at the top end of the first external thread cylinder (804), first external threads (806) are formed in the surface of the limiting disc (805), the second external thread cylinder (808) is fixed at the bottom end of the middle part of the rotating ring (6), and the threaded ring (809) is screwed in the second external thread cylinder (808).

2. A stop screw valve according to claim 1, characterised in that the connecting piece (802) is an arc-shaped piece.

3. The stop screw valve according to claim 1, wherein a guide ring (7) is mounted at the top end of the inner side of the housing (1), and a through hole is formed in the position, corresponding to the valve rod (5), of the guide ring (7).

4. The stop valve according to claim 1, wherein the first externally threaded barrel (804) and the limiting disc (805) are provided with threaded holes (807) at positions corresponding to the valve rod (5).

5. A threaded stop valve according to claim 1, characterized in that the first external thread (806) has the same thread diameter as the second external thread barrel (808).

6. The stop valve according to claim 1, wherein a square block is arranged at the top end of the limiting disc (805), and a through hole for the valve rod (5) to pass through is formed in the middle of the square block.

7. A stop screw valve according to claim 1, characterised in that the surface of the rotating ring (6) is provided with anti-slip threads.

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