Novel anti-explosion overpressure exhaust valve

Abstract

The utility model discloses a novel anti-explosion overpressure exhaust valve, which relates to the technical field of overpressure exhaust valves and comprises an anti-explosion shell, a locking component is arranged at the bottom end of the anti-explosion shell, and a sealing component is arranged in the anti-explosion shell. The locking assembly comprises angle iron and a limiting rod, one side of the top end of the angle iron is welded to one side of the bottom end of the anti-explosion shell, the angle iron is connected with the limiting rod, the surface of the limiting rod is sleeved with a supporting spring, and two protruding strips are fixedly arranged on the surface of the limiting rod. The sealing device has the advantages that the movable disc and the stand column can be prevented from rotating through the two guide rods of the sealing assembly, the lock hole and the limiting rod can be kept coaxial, the supporting spring can be compressed by pulling the limiting rod and the baffle ring, vertical movement of the movable disc can be guaranteed, the compressed state of the supporting spring can be kept by rotating the limiting rod and changing the angle of the protruding strip, and the sealing effect is good. By resetting the raised line and loosening the limiting rod, the supporting spring can push the limiting rod to reset.

Description

Technical Field

[0001] The utility model relates to an exhaust valve, in particular to a novel explosion-proof overpressure exhaust valve, belonging to the technical field of overpressure exhaust valves. Background Art

[0002] The overpressure exhaust valve is a valve device installed on the boost system of a turbocharged engine. Its function is to discharge excess boost air by opening the valve when the intake pressure drops suddenly, preventing the compressor from continuing to run at high speed and damaging the turbine. The overpressure exhaust valve is mainly used for the exhaust vent of protective engineering and is usually in a closed state.

[0003] Its application number is "CN201922152243.8" and discloses "an explosion-proof overpressure exhaust valve", which "comprises an exhaust valve body, a base plate welded to the upper end of the exhaust valve body, and a sealing rubber ring is fixed to the base plate, a rubber seat is fixed to the inner wall of the exhaust valve body, and a door cover is clamped on the rubber seat, a limiting mechanism is fixed at equal distances on the door cover, and a fastener is fixed on the limiting mechanism." In the utility model, by arranging a sealing rubber ring and a rubber seat, the problem that the explosion-proof overpressure exhaust valve has a poor sealing effect and is prone to air leakage during isolation and protection is solved; by arranging a fastener, the problem that the explosion-proof overpressure exhaust valve is difficult to lock the door cover and is time-consuming and labor-intensive is solved. The fastener of the utility model includes a disc and a threaded rod, and the U-shaped seat is rotatably connected to the threaded rod through a threaded hole. The handle can be held tightly, and then the door cover is pulled by the handle so that the door cover is firmly in contact with the rubber seat, and then all the threaded rods are rotated so that the threaded rod drives the disc to move until the disc is firmly in contact with the exhaust valve body, thereby fixing the door cover.

[0004] However, the above method still has the following defects: after pulling the door cover by the handle, all the threaded rods need to be rotated so that the threaded rods drive the disc to move, so that the door cover can be fixed. Due to the large number of threaded rods, they need to be rotated one by one, which is time-consuming and difficult to operate. When opening again, the threaded rods need to be rotated in reverse one by one, which is not convenient for quick opening. Utility Model Content

[0005] The utility model aims to provide a novel explosion-proof overpressure exhaust valve to solve the problem in the above background technology that it needs to be rotated sequentially, which is time-consuming and difficult to operate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new explosion-proof overpressure exhaust valve, comprising an explosion-proof shell, a locking assembly is provided at the bottom end of the explosion-proof shell, and a sealing assembly is provided inside the explosion-proof shell; the locking assembly comprises an angle iron and a limit rod, one side of the top end of the angle iron is welded to one side of the bottom end of the explosion-proof shell, the angle iron is connected to the limit rod, the surface of the limit rod is sleeved with a supporting spring, and the surface of the limit rod is fixedly provided with two convex strips; the sealing assembly comprises a cross bar and a movable disk, the cross bar is fixedly connected to the inside of the explosion-proof shell, the cross bar is slidably connected with the movable disk through two guide rods, the surfaces of the two cross bars are sleeved with compression springs, the bottom end of the movable disk is provided with a rubber ring, the middle part of the bottom end of the movable disk is fixedly provided with a column, the surface of the column is provided with a lock hole, and the limit rod is interlaced and connected with the lock hole.

[0007] As a preferred technical solution of the utility model, a ball head is fixedly provided at one end of the limit rod, an end plate is welded to the other end of the limit rod, a pull ring is welded to the middle part of one side of the end plate, and a retaining ring is fixedly provided on the surface of the limit rod, and the diameter of the retaining ring is larger than the diameter of the support spring.

[0008] As a preferred technical solution of the utility model, a rod groove is opened on one side of the angle iron, the limit rod is slidably connected to the rod groove, the top and bottom of the rod groove are both provided with depressions, and the two convex strips are slidably connected to the two depressions respectively.

[0009] As a preferred technical solution of the utility model, a support ring is fixedly provided at the bottom end of the movable disk, the rubber ring is snap-connected with the support ring, a retaining ring is fixedly provided at the bottom end of the support ring, and the outer diameter of the retaining ring is greater than the inner diameter of the rubber ring.

[0010] As a preferred technical solution of the utility model, support blocks are fixedly connected to both sides of the bottom end of the cross bar by bolts, one side of the two support blocks is welded to the inner wall of the explosion-proof shell, and a gas channel is opened at the bottom end of the explosion-proof shell, and the diameter of the gas channel is smaller than the diameter of the rubber ring and larger than the diameter of the retaining ring.

[0011] As a preferred technical solution of the utility model, the two guide rods are slidably connected to the cross rod, the bottom ends of the two guide rods are fixedly connected to the top of the movable disk, the top ends of the two guide rods are provided with screw threads, and the top ends of the two guide rods are threadedly connected with threaded caps through the screw threads.

[0012] As a preferred technical solution of the utility model, a mounting ring is fixedly provided on the top of the explosion-proof housing, a sealing ring is snap-connected on the surface of the mounting ring, and a plurality of mounting holes are opened on the surface of the mounting ring.

[0013] Compared with the related art, the novel explosion-proof overpressure exhaust valve provided by the utility model has the following beneficial effects:

[0014] 1. The two guide rods of the sealing assembly can prevent the movable disk and the column from rotating, and the lock hole and the limit rod can be kept coaxial. By pulling the limit rod, the retaining ring can compress the support spring to ensure the vertical movement of the movable disk. By rotating the limit rod and changing the angle of the convex strip, the compression state of the support spring can be maintained. By resetting the convex strip and loosening the limit rod, the support spring can push the limit rod to reset and insert it into the lock hole, which can quickly fix the movable disk and prevent its vertical displacement. The operation is simple, and there is no need to fix the movable disk with multiple screws, saving manpower and time.

[0015] 2. A certain pressure can be applied to the movable disc through the compression spring, so that the rubber ring at the bottom of the movable disc can fit closely with the inner wall of the bottom of the movable disc, thereby improving the sealing of the movable disc. When the external impact force is transmitted to the movable disc, the rubber ring can provide buffering for the movable disc and reduce the impact force. When the poisonous gas is discharged under the action of overpressure, the pressure can be transmitted to the compression spring through the movable disc to resist the pressure of the compression spring. The compression spring can shrink and the movable disc can rise, and the gas can be discharged through the gap between the movable disc and the inner wall of the explosion-proof shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0017] Figure 2 This is the second structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the sealing assembly of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the movable disk of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the locking assembly of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the angle iron of the utility model.

[0022] In the figure: 1. explosion-proof shell; 2. mounting ring; 3. sealing ring; 4. mounting hole; 5. gas channel; 6. support block; 7. locking assembly; 701. angle iron; 702. rod groove; 703. depression; 704. limit rod; 705. support spring; 706. retaining ring; 707. convex strip; 708. ball head; 709. end plate; 7010. pull ring; 8. sealing assembly; 801. cross bar; 802. movable disk; 803. guide rod; 804. compression spring; 805. threaded cap; 806. rubber ring; 807. support ring; 808. retaining ring; 809. column; 8010. lock hole. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1:

[0025] See also Figure 1-6 The utility model provides a novel explosion-proof overpressure exhaust valve, including an explosion-proof shell 1, a locking assembly 7 is provided at the bottom end of the explosion-proof shell 1, a sealing assembly 8 is provided inside the explosion-proof shell 1, a mounting ring 2 is fixedly provided at the top end of the explosion-proof shell 1, a sealing ring 3 is snap-connected on the surface of the mounting ring 2, a plurality of mounting holes 4 are opened on the surface of the mounting ring 2, the explosion-proof shell 1 can be fixedly installed through the mounting ring 2 and the mounting holes 4, the sealing ring 3 can ensure the sealing between the mounting ring 2 and the mounting surface, and the sealing assembly 8 is conveniently locked through the locking assembly 7;

[0026] The locking assembly 7 includes an angle iron 701 and a limiting rod 704. One side of the top of the angle iron 701 is welded to one side of the bottom of the explosion-proof housing 1. The angle iron 701 is connected to the limiting rod 704. A support spring 705 is sleeved on the surface of the limiting rod 704. Two convex strips 707 are fixed on the surface of the limiting rod 704. The limiting rod 704 can be supported by the support spring 705 to prevent the limiting rod 704 from shaking.

[0027] A ball head 708 is fixedly provided at one end of the limiting rod 704, an end plate 709 is welded to the other end of the limiting rod 704, a pull ring 7010 is welded to the middle of one side of the end plate 709, a retaining ring 706 is fixedly provided on the surface of the limiting rod 704, and the diameter of the retaining ring 706 is larger than the diameter of the supporting spring 705. The limiting rod 704 can be pulled by the pull ring 7010, and the limiting rod 704 can compress the supporting spring 705 through the retaining ring 706;

[0028] A rod groove 702 is provided on one side of the angle iron 701, and a limiting rod 704 is slidably connected to the rod groove 702. Recesses 703 are provided on the top and bottom of the rod groove 702, and two convex strips 707 are slidably connected to the two recesses 703 respectively. The limiting rod 704 can be guided by the rod groove 702, and the recesses 703 can guide the convex strips 707.

[0029] Embodiment 2:

[0030] The sealing assembly 8 includes a cross bar 801 and a movable disk 802. The cross bar 801 is fixedly connected to the interior of the explosion-proof housing 1. The cross bar 801 is slidably connected to the movable disk 802 through two guide rods 803. The surfaces of the two cross bars 801 are sleeved with compression springs 804. The bottom end of the movable disk 802 is provided with a rubber ring 806. A column 809 is fixedly provided in the middle of the bottom end of the movable disk 802. A lock hole 8010 is opened on the surface of the column 809. The limiting rod 704 is interlaced and connected with the lock hole 8010. By compressing the compression spring 804, a certain pressure can be applied to the movable disk 802, so that the rubber ring 806 at the bottom end of the movable disk 802 can be closely fitted with the inner wall of the bottom end of the movable disk 802.

[0031] A support ring 807 is fixedly provided at the bottom end of the movable disk 802, and the rubber ring 806 is engaged with the support ring 807. A retaining ring 808 is fixedly provided at the bottom end of the support ring 807. The outer diameter of the retaining ring 808 is larger than the inner diameter of the rubber ring 806. The support ring 807 and the retaining ring 808 can limit the rubber ring 806 to prevent the rubber ring 806 from loosening and falling off.

[0032] Both sides of the bottom end of the cross bar 801 are fixedly connected with support blocks 6 by bolts, and one side of the two support blocks 6 is welded to the inner wall of the explosion-proof shell 1. A gas channel 5 is opened at the bottom end of the explosion-proof shell 1. The diameter of the gas channel 5 is smaller than the diameter of the rubber ring 806 and larger than the diameter of the retaining ring 808. The cross bar 801 can be supported by the support blocks 6. When the rubber ring 806 closes the gas channel 5, the retaining ring 808 can enter the gas channel 5 without preventing the rubber ring 806 from fitting the explosion-proof shell 1.

[0033] The two guide rods 803 are both slidably connected to the cross bar 801, and the bottom ends of the two guide rods 803 are fixedly connected to the top of the movable disk 802. The top ends of the two guide rods 803 are provided with screw threads, and the top ends of the two guide rods 803 are threadedly connected with threaded caps 805 through the screw threads. By loosening the threaded caps 805, the cross bar 801 can be removed.

[0034] When in use, the staff first fixes the explosion-proof shell 1 through the installation ring 2 and the installation hole 4, the sealing ring 3 can seal between the installation ring 2 and the installation surface, and then pull the limit rod 704 through the pull ring 7010 to make the retaining ring 706 compress the support spring 705, and pull out the limit rod 704 from the lock hole 8010 to stop locking the movable disk 802. When the convex strip 707 of the limit rod 704 passes through the recess 703, the staff rotates the limit rod 704 to make the convex strip 707 misaligned with the recess 703, and then releases the pull ring 7010 to maintain the compressed state of the support spring 705 and prevent the limit rod 704 from resetting. During the working process, the compression spring 804 can apply a certain pressure to the movable disk 802, so that the rubber ring 806 at the bottom end of the movable disk 802 can fit closely with the inner wall of the bottom end of the movable disk 802, and it is not easy to produce a gap, which can maintain the closed state of the movable disk 802 and improve the sealing performance of the movable disk 802. When encountering external impact force, the external impact force is transmitted to the movable disk 802, and the rubber ring 806 can provide buffering for the movable disk 802 and reduce the impact force. When discharging poisonous gas under overpressure, the pressure can be transmitted to the compression spring 804 through the movable disk 802 to resist the pressure of the compression spring 804. The compression spring 804 can shrink under the overpressure, and the movable disk 802 can rise and open the gas channel 5, that is, the gas can be discharged through the gap between the movable disk 802 and the inner wall of the explosion-proof shell 1. When isolation protection is needed in wartime, the staff rotates the limit rod 704 to make the convex strip 707 and the recess 703 at the same level, and stop compressing the support spring 705. The support spring 705 can push the limit rod 704 to reset, that is, the limit rod 704 can be inserted into the lock hole 8010 of the column 809 through the ball head 708, and the movable disk 802 can be quickly locked. In wartime, the movable disk 802 can be prevented from vertical displacement under the action of external force.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel explosion-proof overpressure exhaust valve, comprising an explosion-proof housing (1), characterized in that: A locking assembly (7) is provided at the bottom end of the explosion-proof housing (1), and a sealing assembly (8) is provided inside the explosion-proof housing (1); The locking assembly (7) comprises an angle iron (701) and a limiting rod (704); one side of the top end of the angle iron (701) is welded to one side of the bottom end of the explosion-proof housing (1); the angle iron (701) is connected to the limiting rod (704); a support spring (705) is sleeved on the surface of the limiting rod (704); and two convex strips (707) are fixedly provided on the surface of the limiting rod (704); The sealing assembly (8) comprises a cross bar (801) and a movable disk (802), wherein the cross bar (801) is fixedly connected to the interior of the explosion-proof housing (1), and the cross bar (801) is slidably connected to the movable disk (802) via two guide rods (803), and the surfaces of the two cross bars (801) are sleeved with a compression spring (804), and the bottom end of the movable disk (802) is provided with a rubber ring (806), and a column (809) is fixedly provided in the middle of the bottom end of the movable disk (802), and a locking hole (8010) is opened on the surface of the column (809), and the limiting rod (704) is connected to the locking hole (8010) through insertion.

2. A novel explosion-proof overpressure exhaust valve according to claim 1, characterized in that: A ball head (708) is fixedly provided at one end of the limiting rod (704), an end plate (709) is welded to the other end of the limiting rod (704), a pull ring (7010) is welded to the middle of one side of the end plate (709), and a retaining ring (706) is fixedly provided on the surface of the limiting rod (704), and the diameter of the retaining ring (706) is greater than the diameter of the support spring (705).

3. A novel explosion-proof overpressure exhaust valve according to claim 1, characterized in that: A rod groove (702) is provided on one side of the angle iron (701), the limiting rod (704) is slidably connected to the rod groove (702), the top and bottom of the rod groove (702) are both provided with depressions (703), and the two convex strips (707) are slidably connected to the two depressions (703) respectively.

4. A novel explosion-proof overpressure exhaust valve according to claim 1, characterized in that: A support ring (807) is fixedly provided at the bottom end of the movable disk (802), the rubber ring (806) is snap-fitted and connected to the support ring (807), and a retaining ring (808) is fixedly provided at the bottom end of the support ring (807), wherein the outer diameter of the retaining ring (808) is greater than the inner diameter of the rubber ring (806).

5. A novel explosion-proof overpressure exhaust valve according to claim 4, characterized in that: Both sides of the bottom end of the cross bar (801) are fixedly connected to support blocks (6) by bolts, and one side of the two support blocks (6) is welded to the inner wall of the explosion-proof shell (1). The bottom end of the explosion-proof shell (1) is provided with a gas channel (5), and the diameter of the gas channel (5) is smaller than the diameter of the rubber ring (806) and larger than the diameter of the retaining ring (808).

6. A novel explosion-proof overpressure exhaust valve according to claim 1, characterized in that: The two guide rods (803) are both slidably connected to the cross bar (801), the bottom ends of the two guide rods (803) are fixedly connected to the top end of the movable disk (802), the top ends of the two guide rods (803) are both provided with screw threads, and the top ends of the two guide rods (803) are both threadedly connected to threaded caps (805) through the screw threads.

7. The novel explosion-proof overpressure exhaust valve according to claim 1 is characterized in that: A mounting ring (2) is fixedly provided at the top end of the explosion-proof housing (1), a sealing ring (3) is snap-fitted to the surface of the mounting ring (2), and a plurality of mounting holes (4) are provided on the surface of the mounting ring (2).

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