Cut-off component for overpressure automatic cut-off pressure regulator

Abstract

The invention discloses a cut-off component for an overpressure automatic cut-off pressure regulator, which comprises a valve body, a valve cover fixedly arranged on the valve body and a valve rod, the valve rod is rotatably arranged in the valve body, the cut-off component further comprises a cut-off mechanism arranged in the valve body, a plug body is fixedly arranged at the inlet end of the valve body, and a plug is arranged at the outlet end of the valve body. A rectangular groove is formed in the middle of the plug body in a penetrating mode, and a first intercepting plate and a second intercepting plate are symmetrically arranged in the rectangular groove and can rotate to open or close a channel in the valve body. On-off of the valve body is controlled through the first intercepter plate and the second intercepter plate in the plug body, the valve body can be closed when the free ends of the first intercepter plate and the second intercepter plate are combined together, on the contrary, the valve body can be opened, on one hand, normal reset of the valve rod can be guaranteed, and the fatigue phenomenon cannot be generated; on the other hand, the pressure regulating precision can be improved, the pressure regulating effect is guaranteed, and the advantages of long service life and easy control are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gas pressure regulators, and in particular to a cut-off component for an overpressure automatic cut-off pressure regulator. Background Art

[0002] The gas pressure regulator is commonly known as a pressure reducing valve, also called a gas pressure regulating valve. It is a device that automatically changes the gas flow through the regulating valve to keep the outlet gas at a specified pressure.

[0003] The existing Chinese patent with announcement number CN212868606U discloses a cut-off component for an overpressure automatic cut-off regulator, which relates to the technical field of gas transmission and distribution equipment manufacturing. The present invention includes a cam cover, a camshaft, a cut-off mechanism and a rocker arm assembly, the rocker arm assembly includes a rocker arm, a mounting shaft, a roller and a striker, the middle part of the rocker arm is installed in the cam cover through the mounting shaft, and the rocker arm can rotate around the axis of the mounting shaft under the action of the mounting shaft; the roller is installed at the upper end of the rocker arm, and the striker is arranged at the lower end of the rocker arm. After the cut-off valve stem of the cut-off mechanism is released, the cut-off valve stem strikes the striker under the action of the reset spring.

[0004] With respect to the above-mentioned related technologies, it is found that the existing gas pressure regulator generally uses a valve stem and a group of circular springs wrapped outside to reset and drive the valve stem. However, the spring will become fatigued during repeated use, which can easily affect the pressure regulation effect of the gas pressure regulator in the later stage. Summary of the invention

[0005] The main purpose of the present invention is to provide a cut-off component for an overpressure automatic cut-off voltage regulator, aiming to solve the existing technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a cutting component for an overpressure automatic cut-off pressure regulator, comprising a valve body, a valve cover fixedly installed on the valve body, and a valve stem, wherein the valve stem is rotatably installed in the valve body, and the head of the valve stem extends into the valve cover, and the cutting component also includes a cutting mechanism installed in the valve body, and the cutting mechanism includes a plug body, the plug body is fixedly installed at the inlet end of the valve body, and a rectangular groove is penetrated through the middle of the plug body, and a first shut-off plate and a second shut-off plate are symmetrically arranged in the rectangular groove, and the first shut-off plate and the second shut-off plate can be rotated to open or close the channel in the valve body.

[0007] Furthermore, one end of the first shutoff plate is rotatably connected to the plug body via a first longitudinally arranged adapter shaft, and a second gear ring is sleeved and fixed on the lower end of the first adapter shaft; one end of the second shutoff plate is rotatably connected to the plug body via a second longitudinally arranged adapter shaft, and a third gear ring is sleeved and fixed on the lower end of the second adapter shaft; a bidirectional gear plate is also slidably installed in the plug body, and one end of the bidirectional gear plate is connected to the plug body via a fastening spring; two sides of the bidirectional gear plate are respectively meshed with the second gear ring and the third gear ring, and a unidirectional gear plate is fixedly installed on the upper end surface of the bidirectional gear plate.

[0008] Furthermore, the cutting mechanism also includes a worm gear and a transmission shaft respectively arranged at the upper and lower ends of the valve stem, a first gear ring meshing with a one-way gear plate is fixedly mounted on the transmission shaft, a driving member is fixedly installed in the valve cover, and a worm matching the worm gear is installed at the output end of the driving member.

[0009] Furthermore, sealing gaskets are fixedly mounted on upper and lower sides of the first and second intercepting plates and on free ends of the first and second intercepting plates, and the sealing gaskets cover side surfaces of the first and second intercepting plates.

[0010] Furthermore, a plurality of fillet ribs are arranged in parallel on the lower end surface of the bidirectional tooth plate, the fillet ribs are slidably installed in the rectangular groove, and the fillet ribs are integrally formed with the bidirectional tooth plate, and an anti-drop plate is fixedly installed on one end of the unidirectional tooth plate away from the bidirectional tooth plate.

[0011] Furthermore, a monitoring mechanism for real-time monitoring of the valve stem is installed in the valve cover, and the monitoring mechanism includes a sleeve and an adapter plate fixedly installed on the inner side of the valve cover, the sleeve is fixedly installed on the adapter plate, and a movable rod is slidably installed in the sleeve, a ball joint is fixedly installed on the head of the movable rod, and the end of the movable rod is connected to the sleeve through a reset spring.

[0012] Furthermore, a first circular ring is fixedly installed on one side of the sleeve close to the valve stem, and a plurality of laser emitting ends are evenly installed on the inner side surface of the first circular ring along the circumferential direction. A second circular ring corresponding to the first circular ring is fixedly mounted on the outer side surface of the movable rod, and a laser receiving end corresponding to the laser emitting end is fixedly installed on the outer side surface of the second circular ring.

[0013] Furthermore, a plurality of support rings are sleeved and installed on the portion of the movable rod located in the sleeve, and the support rings are fixedly connected to the sleeve.

[0014] Furthermore, a buzzer and a logic control module are fixedly installed on the outside of the sleeve, the buzzer is used to sound an alarm, and the logic control module is used to receive and transmit signals. The logic control module, the buzzer, the laser emitting end and the laser receiving end are all electrically connected.

[0015] Furthermore, the support ring is evenly provided with a plurality of annular grooves along the circumferential direction.

[0016] The beneficial effects of the present invention are embodied in:

[0017] In the present invention, the on-off of the valve body is controlled by the first shutoff plate and the second shutoff plate in the plug body, and when in use, the first shutoff plate and the second shutoff plate can be synchronously controlled to rotate by the bidirectional toothed plate. When the free ends of the first shutoff plate and the second shutoff plate are merged together, the valve body can be closed, and vice versa. The driving method of rotating pressure is used instead of the spring. On the one hand, it can ensure the normal resetting of the valve stem without fatigue, effectively improving the service life of the equipment, and on the other hand, it can improve the pressure regulation accuracy and ensure the pressure regulation effect, and has the advantages of long service life and easy control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional view of a local structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the valve stem and the cutting mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the exploded structure of the first intercepting plate and the second intercepting plate cooperating with each other in the present invention;

[0022] Figure 5 It is a three-dimensional schematic diagram of the cooperation between the valve cover, valve stem, worm gear, worm and monitoring mechanism of the present invention;

[0023] Figure 6 It is a partial cross-sectional schematic diagram of the matching of the rod and the monitoring mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the monitoring mechanism of the present invention.

[0025] Description of reference numerals:

[0026] 1. Valve body; 2. Valve cover; 3. Valve stem; 301. O-ring; 4. Cut-off mechanism; 401. Plug body; 402. Worm gear; 403. Rectangular groove; 404. Transmission shaft; 405. First shutoff plate; 406. Second shutoff plate; 407. Fastening spring; 408. Bidirectional tooth plate; 409. Fillet rib; 410. First tooth ring; 411. Anti-slip plate; 412. One-way tooth plate; 413. First transfer shaft; 414. Second tooth ring; 415. First sealing gasket; 416. Second sealing gasket; 417. Third sealing gasket; 418. Three-tooth ring; 419, fourth sealing gasket; 420, second adapter shaft; 421, first bearing seat; 422, driving member; 423, worm; 424, second bearing seat; 5, monitoring mechanism; 501, sleeve; 502, adapter plate; 503, spherical member; 504, ball joint; 505, movable rod; 506, logic control module; 507, buzzer; 508, reset spring; 509, first circular ring member; 510, second circular ring member; 511, laser emitting end; 512, laser receiving end; 513, support ring; 514, ring groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 The present invention discloses a cut-off component for an overpressure automatic cut-off pressure regulator, comprising a valve body 1, a valve cover 2 fixedly mounted on the valve body 1, and a valve stem 3. The valve stem 3 is rotatably mounted in the valve body 1, and the head of the valve stem 3 extends into the valve cover 2. The cut-off component also includes a cut-off mechanism 4 installed in the valve body 1. The cut-off mechanism 4 includes a plug body 401. The plug body 401 is fixedly mounted at the inlet end of the valve body 1, and a rectangular groove 403 is penetrated through the middle of the plug body 401. A first shut-off plate 405 and a second shut-off plate 406 for cutting off and unblocking gas are symmetrically arranged in the rectangular groove 403. The first shut-off plate 405 and the second shut-off plate 406 are arranged in a V-shape. The first shut-off plate 405 and the second shut-off plate 406 can be rotated to open or close the channel in the valve body 1.

[0029] In this embodiment, the first shutoff plate 405 and the second shutoff plate 406 in the plug body 401 are used to control the on-off of the valve body 1. In addition, when in use, the first shutoff plate 405 and the second shutoff plate 406 can be synchronously controlled to rotate through the bidirectional tooth plate 408. When the free ends of the first shutoff plate 405 and the second shutoff plate 406 are merged together, the valve body 1 can be closed, and vice versa, the valve body 1 can be opened. The use of a rotating pressure driving method instead of a spring can, on the one hand, ensure the normal resetting of the valve stem without fatigue, effectively prolonging the service life of the equipment, and on the other hand, improve the pressure regulation accuracy and ensure the pressure regulation effect, with the advantages of a long service life and easy control.

[0030] In one embodiment, see Figure 3 and Figure 4 One end of the first closure plate 405 is rotatably connected to the plug body 401 through a first adapter shaft 413 arranged longitudinally, and a second gear ring 414 is fixedly sleeved on the lower end of the first adapter shaft 413 for cooperating with the first adapter shaft 413 to swing the first closure plate 405. One end of the second closure plate 406 is rotatably connected to the plug body 401 through a second adapter shaft 420 arranged longitudinally, and a third gear ring 418 is fixedly sleeved on the lower end of the second adapter shaft 420 for cooperating with the second adapter shaft 420 to swing the second closure plate 406. The plug body 401 is also slidably installed with a A two-way tooth plate 408, and one end of the two-way tooth plate 408 is connected to the plug body 401 through a fastening spring 407, the two sides of the two-way tooth plate 408 are respectively meshed with the second tooth ring 414 and the third tooth ring 418, and a one-way tooth plate 412 for driving the two-way tooth plate 408 is fixedly installed on the upper end surface of the two-way tooth plate 408. Specifically, the interior of the plug body 401 is located between the third tooth ring 418 and the second tooth ring 414, and the two-way tooth plate 408 is elastically arranged through a fastening spring 407, and the third tooth ring 418 and the second tooth ring 414 are both meshed with the two-way tooth plate 408.

[0031] In one embodiment, see Figure 5 The cutting mechanism 4 also includes a worm gear 402 and a transmission shaft 404 respectively arranged at the upper and lower ends of the valve stem 3. The transmission shaft 404 is sleeved with a first gear ring 410 that meshes with a one-way gear plate 412. A driving member 422 is fixedly installed in the valve cover 2, and a worm 423 that matches the worm gear 402 is installed at the output end of the driving member 422.

[0032] Preferably, O-rings 301 are provided on both sides of the middle of the valve stem 3 for sealing the joint.

[0033] Preferably, the outer wall of the valve stem 3 is provided with a first bearing seat 421 for supporting and fixing the valve stem 3 at the position of the worm gear 402, the first bearing seat 421 is connected to the valve cover 2, and the valve stem 3 is rotatably connected to the first bearing seat 421 through a bearing.

[0034] Preferably, second bearing seats 424 for supporting the worm 423 are provided at both ends of the worm 423 , the second bearing seat 424 is connected to the valve cover 2 , and the worm 423 and the second bearing seat 424 are rotatably connected via bearings.

[0035] In one embodiment, see Figure 4 Sealing gaskets are fixedly installed on the upper and lower sides of the first intercepting plate 405 and the second intercepting plate 406 and the free ends of the first intercepting plate 405 and the second intercepting plate 406 , and the sealing gaskets cover the sides of the first intercepting plate 405 and the second intercepting plate 406 .

[0036] Specifically, first sealing gaskets 415 are provided on both sides of the outside of the first intercepting plate 405, and a second sealing gasket 416 is provided inside the first intercepting plate 405; third sealing gaskets 417 are provided on both sides of the outside of the second intercepting plate 406, and a fourth sealing gasket 419 is provided inside the second intercepting plate 406 for cooperating with the second sealing gasket 416 to seal the joint, and the fourth sealing gasket 419 corresponds to the position of the second sealing gasket 416.

[0037] In one embodiment, see Figure 3 A plurality of guiding rounded ribs 409 are arranged in parallel on the lower end surface of the bidirectional tooth plate 408. The rounded ribs 409 are slidably installed in the rectangular groove 403, and the rounded ribs 409 and the bidirectional tooth plate 408 are integrally formed. An anti-slip plate 411 for intercepting the first gear ring 410 is fixedly installed on one end of the unidirectional tooth plate 412 away from the bidirectional tooth plate 408.

[0038] Specifically, by providing the cut-off mechanism 4 in the valve body 1, when in use, the driving member 422 during operation will drive the valve stem 3 to rotate through the worm 423 and the worm wheel 402. At this time, the transmission shaft 404 will rotate synchronously with the valve stem 3. Then, the first gear ring 410 will drive the bidirectional gear plate 408 to slide inside the plug body 401 through the unidirectional gear plate 412. At this time, the third gear ring 418 and the second gear ring 414 will rotate relative to each other under the action of the bidirectional gear plate 408. Then, the second shut-off plate 406 and the first shut-off plate 405 will swing under the action of the second adapter shaft 420 and the first adapter shaft 413 respectively, so as to automatically cut off and clear the gas inside the valve body 1. The use of a rotary pressure driving method instead of a spring can, on the one hand, ensure the normal resetting of the valve stem 3 without fatigue, effectively prolonging the service life of the equipment, and on the other hand, improve the pressure regulation accuracy and ensure the pressure regulation effect.

[0039] In one embodiment, in order to facilitate the staff to monitor the operating status of the valve stem 3, please refer to Figure 6 and Figure 7A monitoring mechanism 5 for real-time monitoring of the valve stem 3 is installed in the valve cover 2. The monitoring mechanism 5 includes a sleeve 501 and an adapter plate 502 fixedly installed on the inner side of the valve cover 2. The sleeve 501 is fixedly installed on the adapter plate 502, and a movable rod 505 is slidably installed in the sleeve 501. A ball joint 504 is fixedly installed on the head of the movable rod 505, and the end of the movable rod 505 is connected to the sleeve 501 through a reset spring 508.

[0040] Preferably, a spherical member 503 is rotatably mounted inside the ball joint 504 to reduce friction at the joint.

[0041] In one embodiment, see Figure 6 and Figure 7 A first circular ring 509 is fixedly installed on one side of the sleeve 501 close to the valve stem 3, and a plurality of laser emitting ends 511 are evenly installed on the inner side surface of the first circular ring 509 along the circumferential direction. A second circular ring 510 corresponding to the first circular ring 509 is fixedly mounted on the outer side surface of the movable rod 505, and a laser receiving end 512 corresponding to the laser emitting end 511 is fixedly installed on the outer side surface of the second circular ring 510.

[0042] In one embodiment, see Figure 7 A plurality of support rings 513 are sleeved and installed on the portion of the movable rod 505 located in the sleeve 501 , and the support rings 513 are fixedly connected to the sleeve 501 .

[0043] In one embodiment, see Figure 7 A buzzer 507 and a logic control module 506 are fixedly installed on the outside of the sleeve 501. The buzzer 507 is used to sound an alarm, and the logic control module 506 is used to receive and transmit signals. The logic control module 506, the buzzer 507, the laser emitting end 511 and the laser receiving end 512 are all electrically connected.

[0044] This embodiment can monitor the operating status of the valve stem 3 in real time through the setting of the monitoring mechanism 5. When the laser receiving end 512 cannot receive the signal transmitted by the laser emitting end 511, it means that the laser receiving end 512 and the laser emitting end 511 cannot be aligned, and then the abnormal operation of the valve stem 3 (such as deformation of the valve stem 3) can be quickly determined, and then the logic control module 506 will start the buzzer 507 to alarm, so as to remind the staff to inspect and replace the valve stem 3 in time.

[0045] In one embodiment, the support ring 513 is evenly provided with a plurality of annular grooves 514 along the circumferential direction, so as to reduce the contact area between the support ring 513 and the movable rod 505 .

[0046] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cut-off component for an overpressure automatic cut-off pressure regulator, comprising a valve body (1), a valve cover (2) fixedly mounted on the valve body (1), and a valve stem (3), wherein the valve stem (3) is rotatably mounted in the valve body (1), and the head of the valve stem (3) extends into the valve cover (2), characterized in that The cut-off component also includes a cut-off mechanism (4) installed in the valve body (1), the cut-off mechanism includes a plug body (401), the plug body (401) is fixedly installed at the inlet end of the valve body (1), and a rectangular groove (403) is opened through the middle of the plug body (401), and a first cut-off plate (405) and a second cut-off plate (406) are symmetrically arranged in the rectangular groove (403), and the first cut-off plate (405) and the second cut-off plate (406) can be rotated to open or close the channel in the valve body (1).

2. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 1, characterized in that: One end of the first shutoff plate (405) is rotatably connected to the plug body (401) via a first adapter shaft (413) arranged longitudinally, and a second gear ring (414) is sleeved and fixed on the lower end of the first adapter shaft (413); one end of the second shutoff plate (406) is rotatably connected to the plug body (401) via a second adapter shaft (420) arranged longitudinally, and a third gear ring (418) is sleeved and fixed on the lower end of the second adapter shaft (420); a bidirectional tooth plate (408) is also slidably installed in the plug body (401), and one end of the bidirectional tooth plate (408) is connected to the plug body (401) via a fastening spring (407); two sides of the bidirectional tooth plate (408) are respectively meshed with the second gear ring (414) and the third gear ring (418), and a unidirectional tooth plate (412) is fixedly installed on the upper end surface of the bidirectional tooth plate (408).

3. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 2, characterized in that: The cutting mechanism further comprises a worm gear (402) and a transmission shaft (404) respectively arranged at the upper and lower ends of the valve stem (3); a first tooth ring (410) meshing with a one-way tooth plate (412) is fixedly sleeved on the transmission shaft (404); a driving member (422) is fixedly installed in the valve cover (2); a worm (423) matching with the worm gear (402) is installed at the output end of the driving member (422).

4. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 1, characterized in that: Sealing gaskets are fixedly installed on the upper and lower sides of the first intercepting plate (405) and the second intercepting plate (406) and the free ends of the first intercepting plate (405) and the second intercepting plate (406), and the sealing gaskets cover the sides of the first intercepting plate (405) and the second intercepting plate (406).

5. A cut-off component for an overpressure automatic cut-off voltage regulator as claimed in claim 2, characterized in that: A plurality of fillet ribs (409) are arranged in parallel on the lower end surface of the bidirectional tooth plate (408); the fillet ribs (409) are slidably installed in the rectangular groove (403); the fillet ribs (409) and the bidirectional tooth plate (408) are integrally formed; and an anti-slip plate (411) is fixedly installed on one end of the unidirectional tooth plate (412) away from the bidirectional tooth plate (408).

6. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 1, characterized in that: A monitoring mechanism (5) for real-time monitoring of the valve stem (3) is installed in the valve cover (2), and the monitoring mechanism (5) includes a sleeve (501) and an adapter plate (502) fixedly installed on the inner side of the valve cover (2), the sleeve (501) is fixedly installed on the adapter plate (502), and a movable rod (505) is slidably installed in the sleeve (501), a ball joint (504) is fixedly installed on the head of the movable rod (505), and the end of the movable rod (505) is connected to the sleeve (501) via a reset spring (508).

7. A cut-off component for an overpressure automatic cut-off voltage regulator as claimed in claim 6, characterized in that: A first circular ring member (509) is fixedly mounted on one side of the sleeve (501) close to the valve stem (3); a plurality of laser emitting ends (511) are evenly mounted on the inner side surface of the first circular ring member (509) along the circumferential direction; a second circular ring member (510) corresponding to the first circular ring member (509) is sleeved and fixedly mounted on the outer side surface of the movable rod (505); a laser receiving end (512) corresponding to the laser emitting end (511) is fixedly mounted on the outer side surface of the second circular ring member (510).

8. A cut-off component for an overpressure automatic cut-off voltage regulator as claimed in claim 6, characterized in that: A plurality of support rings (513) are sleeved and installed on the portion of the movable rod (505) located in the sleeve (501), and the support rings (513) are fixedly connected to the sleeve (501).

9. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 6, characterized in that: A buzzer (507) and a logic control module (506) are fixedly installed on the outside of the sleeve (501), wherein the buzzer (507) is used to issue an alarm, and the logic control module (506) is used to receive and transmit signals, and the logic control module (506), the buzzer (507), the laser emitting end (511) and the laser receiving end (512) are all electrically connected.

10. A cut-off component for an overpressure automatic cut-off voltage regulator according to claim 8, characterized in that: The support ring (513) is evenly provided with a plurality of annular grooves (514) along the circumferential direction.

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