CN217927306U - Butterfly type buffering check valve - Google Patents

Abstract

The utility model discloses a butterfly-type buffering check valve, including the cylindricality valve body, be provided with the valve clack in the valve body, the both ends of valve rod are connected with the both sides rotation of valve body respectively, the outer wall welding of valve body has the casing, the one end of valve rod runs through the valve body and is located the casing, L shape backup pad and rectangle dog have been welded respectively to the both sides of casing inner wall, all be provided with mechanical buffer gear and buffering damping subassembly in backup pad and the dog; the utility model discloses a set up mechanical buffer gear, utilize spring, damping piece and T-shaped piece to make the straight board fixed with the valve rod contact with T-shaped piece when rotating, give the T-shaped piece with pivoted power transmission, the damping piece turns into the elastic potential energy of spring into heat energy simultaneously and scatters and disappears, the T-shaped piece plays the buffering effect to straight board under the elastic action of spring, this buffer process does not need additional drive, compare in hydraulic cylinder simultaneously, the device is more convenient for maintain, can improve the maintenance efficiency of butterfly valve.

Description

Butterfly type buffering check valve

Technical Field

The utility model relates to the technical field of valves, specifically be butterfly buffer check valve.

Background

The butterfly buffer check valve is a valve which automatically opens and closes a valve clack by the flowing of a medium and is used for preventing the medium from flowing backwards. Under the action of fluid pressure flowing in one direction, the valve clack is opened; when the fluid flows in the reverse direction, the valve clack acts on the valve seat to cut off the flow by the combination of the fluid pressure and the self weight of the valve clack, so as to achieve the functions of automatic opening and closing, medium backflow prevention, reverse rotation prevention of the pump and the driving motor and discharge of container medium.

Set up buffer gear through the valve rod one end at the check valve and can make the check valve receive the cushion force when closing, the noise reduction is protected the valve body simultaneously, butterfly type buffering formula check valve as patent CN202371226U proposes, including connecting the valve body on the disk seat, be provided with the valve rod in the valve body, be connected with a valve clack on the valve rod, the one end of valve rod is connected with oil pressure buffer, the device passes through the buffering of piston and hydraulic cylinder realization valve rod, it is higher to the closure requirement of device when using, it is not convenient enough to need regularly to detect and maintain device leakproofness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly buffer check valve is through the one end welding straight plate at the valve rod to set up buffer gear in the both sides of straight plate, make the position of valve rod locking receive the buffering, the device maintains convenient sealed inspection that does not need.

In order to achieve the above object, the utility model provides a following technical scheme: butterfly buffering check valve, including the cylindricality valve body, be provided with the valve clack in the valve body, one side of valve clack is fixed with the valve rod, the both ends of valve rod are rotated with the both sides of valve body respectively and are connected, the outer wall welding of valve body has the casing, the one end of valve rod runs through the valve body and is located the casing, L shape backup pad and rectangle dog have been welded respectively to shells inner wall's both sides, all be provided with mechanical buffer gear and buffering damping subassembly in backup pad and the dog.

Preferably, mechanical buffer gear includes the rectangle dashpot, the rectangle dashpot is seted up at the upper surface of the horizontal board of backup pad, the top of backup pad is provided with the T-shaped piece, the outer wall welding of the end is erect to the T-shaped piece has the baffle, the dashpot internal fixation has the spring, the spring cup joints the outside of putting the pole at the perpendicular of T-shaped piece, the spring is located the baffle bottom, the both sides of baffle and two inner wall sliding connection of dashpot.

Preferably, the buffering damping assembly comprises two inserting rods, one ends of the two inserting rods are welded with the two ends of the lower surface of the T-shaped block transverse plate, and rubber damping blocks are fixed on the outer walls of the two inserting rods.

Preferably, the buffering damping component further comprises two damping grooves, the two damping grooves are formed in two sides of the damping groove, the inserted rod is inserted into the damping groove, and the outer wall of the rubber damping block is tightly attached to the inner wall of the damping groove.

Preferably, the welding of the one end of valve rod has the straight slab, armature is all installed at the both ends of straight slab, two armature is located the both sides face of straight slab respectively, circular telegram magnet is installed to the horizontal board of backup pad.

Preferably, the mechanical buffer mechanism and the buffer damping assembly on one side of the stop block have the same structure, and the mechanical buffer mechanism and the buffer damping assembly in the stop block are located on the lower surface of the stop block.

Preferably, the upper surface of the shell is provided with an electric control box of an electrified magnet through a screw, and the inner wall of the shell is glued with insulating rubber.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up mechanical buffer gear, utilize spring, damping piece and T-shaped piece to make the straight board fixed with the valve rod contact with T-shaped piece when rotating, give the T-shaped piece with pivoted power transmission, the damping piece turns into the elastic potential energy of spring into heat energy simultaneously and scatters and disappears, the T-shaped piece plays the buffering effect to straight board under the elastic action of spring, this buffer process does not need additional drive, compare in hydraulic cylinder simultaneously, the device is more convenient for maintain, can improve the maintenance efficiency of butterfly valve.

Drawings

Fig. 1 is an isometric view of the present invention;

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

fig. 3 is a schematic structural view of the inside of the casing of the present invention;

fig. 4 is a schematic structural diagram of the mechanical buffer mechanism and the buffer damping assembly of the present invention.

In the figure: 1. a valve body; 2. a valve clack; 3. a valve stem; 4. a housing; 5. a support plate; 6. a stopper; 7. a mechanical buffer mechanism; 8. a cushion damping assembly; 701. a buffer tank; 702. a T-shaped block; 703. a baffle plate; 704. a spring; 801. inserting a rod; 802. a rubber damping block; 803. a damping slot; 9. a straight plate; 10. energizing a magnet; 11. an armature; 12. an electronic control box.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the butterfly type buffering check valve comprises a cylindrical valve body 1, wherein a valve clack 2 is arranged in the valve body 1, a valve rod 3 is fixed on one side of the valve clack 2, two ends of the valve rod 3 are respectively and rotatably connected with two sides of the valve body 1, a shell 4 is welded on the outer wall of the valve body 1, one end of the valve rod 3 penetrates through the valve body 1 and is positioned in the shell 4, an L-shaped supporting plate 5 and a rectangular stop block 6 are respectively welded on two sides of the inner wall of the shell 4, and a mechanical buffering mechanism 7 and a buffering damping component 8 are respectively arranged in the supporting plate 5 and the stop block 6;

the mechanical buffer mechanism 7 comprises a rectangular buffer groove 701, the rectangular buffer groove 701 is formed in the upper surface of a transverse plate of the support plate 5, a T-shaped block 702 is arranged above the support plate 5, a baffle 703 is welded on the outer wall of the vertical end of the T-shaped block 702, a spring 704 is fixed in the buffer groove 701, the spring 704 is sleeved outside a vertical rod of the T-shaped block 702, the spring 704 is located at the bottom of the baffle 703, two sides of the baffle 703 are slidably connected with two inner walls of the buffer groove 701, and when the T-shaped block 702 is pressed, the baffle 703 compresses the spring 704 to buffer a straight rod;

the buffering damping assembly 8 comprises two insertion rods 801, one ends of the two insertion rods 801 are welded with two ends of the lower surface of the transverse plate of the T-shaped block 702, rubber damping blocks 802 are fixed on the outer walls of the two insertion rods 801, and energy generated by compression and resetting of the spring 704 is converted into heat energy to be dissipated through friction between the damping blocks and the inner wall of the damping groove 803;

the buffering damping assembly 8 further comprises two damping grooves 803, the two damping grooves 803 are arranged on two sides of the buffering groove 701, the inserted link 801 is inserted into the damping groove 803, and the outer wall of the rubber damping block 802 is tightly attached to the inner wall of the damping groove 803;

a straight plate 9 is welded at one end of the valve rod 3, energized magnets 10 are mounted at two ends of the straight plate 9, the two energized magnets 10 are respectively positioned at two side surfaces of the straight plate 9, and an armature 11 is mounted on a transverse plate of the supporting block;

the mechanical buffer mechanism 7 on one side of the stop block 6 is the same as the buffer damping component 8 in structure, the mechanical buffer mechanism 7 and the buffer damping mechanism in the stop block 6 are positioned on the lower surface of the stop block 6, and the straight plate 9 cannot be popped out and rotated by the reaction force of the spring 704 by arranging the electrified magnet 10 and the armature 11, so that the butterfly valve is opened;

an electric control box 12 of the electrified magnet 10 is installed on the upper surface of the shell 4 through screws, insulating rubber is glued to the inner wall of the shell 4, the electrified magnet 10 is not affected by external metal materials due to the fact that the rubber is glued to the inner wall of the shell 4, and whether the armature 11 is close to the electrified magnet 10 or not can be detected through installing an infrared sensor at one end of the straight plate 9;

when the valve is used, the valve clack 2 is turned over under the action of water flow to drive the valve rod 3 to rotate, meanwhile, the butterfly valve is in an open state, when the water flow flows reversely, the water flow pushes the valve clack 2 to enable the valve rod 3 to rotate reversely, as shown in fig. 3, the valve rod 3 rotates anticlockwise, two ends of a straight plate 9 at one end of the valve rod 3 rotate for 90 degrees and respectively impact the transverse plates of the two T-shaped blocks 702, at the moment, the T-shaped blocks 702 are pressed downwards, the spring 704 is compressed downwards by the baffle 703, meanwhile, the two insertion rods 801 are inserted into the damping groove 803, at the moment, the rubber damping block 802 rubs against the inner wall of the damping groove 803, the elasticity of the spring 704 is lost through friction, and at the moment, the buffering stage is completed;

when the straight plate 9 is close to the supporting plate 5 and the baffle 703 in a deflection mode, the electrified magnet 10 is electrified through the electric control box 12, the electrified magnet 10 is attracted with the armature 11 at the moment, the electrified magnet is automatically released after short attraction, the valve clack 2 cannot be opened under the influence of the reaction force of the spring 704 through the arrangement of the mechanism, the device is used for buffering the valve rod 3 anticlockwise, when the valve rod 3 needs to be buffered clockwise, the mechanical buffer mechanism 7, the buffer damping component 8 and the electrified magnet 10 are arranged at the symmetrical positions of the supporting plate 5 and the stop block 6, the armature 11 is fixed on the other two sides of the two ends of the straight plate 9, namely the lower surface of the supporting plate 5 and the upper surface of the stop block 6, and forward and reverse rotation buffering can be completed.

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

Claims (7)

1. Butterfly buffering check valve, including cylindricality valve body (1), its characterized in that: be provided with valve clack (2) in valve body (1), one side of valve clack (2) is fixed with valve rod (3), the both ends of valve rod (3) rotate with the both sides of valve body (1) respectively and are connected, the outer wall welding of valve body (1) has casing (4), the one end of valve rod (3) is run through valve body (1) and is located casing (4), L shape backup pad (5) and rectangle dog (6) have been welded respectively to the both sides of casing (4) inner wall, all be provided with mechanical buffer gear (7) and buffering damping component (8) in backup pad (5) and dog (6).

2. A butterfly cushion check valve in accordance with claim 1, wherein: the mechanical buffer mechanism (7) comprises a rectangular buffer groove (701), the rectangular buffer groove (701) is formed in the upper surface of a transverse plate of the support plate (5), a T-shaped block (702) is arranged above the support plate (5), a baffle (703) is welded on the outer wall of the vertical end of the T-shaped block (702), a spring (704) is fixed in the buffer groove (701), the spring (704) is sleeved outside a vertical rod of the T-shaped block (702), the spring (704) is located at the bottom of the baffle (703), and two sides of the baffle (703) are connected with two inner walls of the buffer groove (701) in a sliding mode.

3. A butterfly cushion check valve in accordance with claim 2, wherein: the buffer damping assembly (8) comprises two insertion rods (801), one ends of the two insertion rods (801) are welded with the two ends of the lower surface of the transverse plate of the T-shaped block (702), and rubber damping blocks (802) are fixed on the outer walls of the two insertion rods (801).

4. A butterfly cushion check valve according to claim 3, wherein: the buffering damping assembly (8) further comprises two damping grooves (803), the two damping grooves (803) are formed in the two sides of the buffering groove (701), the inserting rod (801) is inserted into the damping grooves (803), and the outer wall of the rubber damping block (802) is tightly attached to the inner wall of the damping groove (803).

5. The butterfly cushion check valve of claim 4, wherein: the welding of the one end of valve rod (3) has straight board (9), armature (11) are all installed at the both ends of straight board (9), two armature (11) are located the both sides face of straight board (9) respectively, circular telegram magnet (10) are installed to the horizontal board of backup pad (5).

6. The butterfly cushion check valve of claim 5, wherein: the structure of the mechanical buffer mechanism (7) on one side of the stop block (6) is the same as that of the buffer damping assembly (8), and the mechanical buffer mechanism (7) and the buffer damping mechanism in the stop block (6) are positioned on the lower surface of the stop block (6).

7. The butterfly cushion check valve of claim 6, wherein: the upper surface of casing (4) is through automatically controlled box (12) that the screw was installed circular telegram magnet (10), the inner wall cementing of casing (4) has insulating rubber.

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