CN218267395U

CN218267395U - Top-mounted butterfly double-valve-clack check valve

Info

Publication number: CN218267395U
Application number: CN202222740108.7U
Authority: CN
Inventors: 陈克涨; 陈克和; 纪文军; 陈铭甫
Original assignee: Zhejiang Alpha Valve Co ltd
Current assignee: Zhejiang Alpha Valve Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-01-10
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a two lamella check valves of facial make-up butterfly relates to the valve technology, because the damage of colliding with easily of water hammer phenomenon when aiming at solving the valve clack and closing, the maintenance is inconvenient, will wholly dismantle maintenance or change from the pipeline, and shortcoming such as application cost height is, and its technical scheme main points are: including the valve body, be located the pivot in the valve body, connect the valve clack in the valve body through the pivot rotation, the through-hole has been seted up to the runner left and right sides of valve body, fixedly connected with slowly closes the device on the valve body, just slowly close the device and run through the through-hole and make it return section and valve clack contact of contracting, work as slowly close the device when through-hole length direction atress, it takes place elastic deformation. The utility model discloses sealing performance is higher, and life is longer, and has characteristics such as dismantle convenient, maintain more conveniently again, and application scope is wider, uses economic benefits more to practice thrift.

Description

Top-mounted butterfly double-valve-clack check valve

Technical Field

The utility model relates to a valve technology, more specifically say, it relates to a facial make-up butterfly bivalve lamella check valve.

Background

The valve is a control component of a fluid delivery system and has the functions of stopping, adjusting, preventing backflow, shunting, stabilizing pressure or overflowing and the like. The butterfly-shaped double-flap check valve has high safety factor and can be widely used in various occasions, most of the butterfly-shaped double-flap check valves in the current market are in butt-clamp, flange or butt-welding connection forms, and as shown in figure 1, the butterfly-shaped double-flap check valve mainly comprises a valve body, a valve flap, a pivot, a fixed shaft, a torsion spring and other parts. Two symmetrically arranged semicircular sealing surfaces are arranged at the lower side of an inner cavity of the valve body, a cross beam is arranged in the middle of the valve body for separation, two semicircular valve clacks which are correspondingly arranged are covered on the semicircular valve body sealing surfaces, each valve clack is hinged with a pivot through an ear hole on the valve clack, a fixed shaft which is parallel to the pivot is also arranged at the upper side of the pivot, the pivot and the fixed shaft are fixed on the valve body in a certain mode, a torsion spring is sleeved on the pivot, the fixed shaft is used as an acting point, one force arm of the torsion spring is pressed on the back of one valve clack, the other force arm is pressed on the back of the other valve clack, initial sealing force and auxiliary valve clack are rapidly closed through certain force, when the valve works, medium flowing along pushes the two semicircular pivot shafts to rotate, the two valve clacks are folded to be attached to bosses at the backs of the two valve clacks, the valve is completely opened, and when the medium and the acting force of the torsion spring pushes the valve clacks to be unfolded to form a full-circle sealing surface to be attached to the valve body sealing surface to achieve the valve closing state. The valve flap has the advantages of simple structure, easy collision and damage due to water hammer phenomenon when the valve flap is closed, inconvenient maintenance, high application cost and the like, and needs to be integrally disassembled from the pipeline for maintenance or replacement.

Therefore, a new structure of the top-loading butterfly slow-closing check valve is needed to solve the above problems, so as to meet the requirements.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a top-mounted butterfly bivalve lamella check valve, sealing performance is higher, and life is longer, and has characteristics such as dismantle convenient, maintain more convenient again, and application scope is wider, uses economic benefits more to practice thrift.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a top-mounted butterfly bivalve lamella check valve, includes the valve body, is located the pivot in the valve body, connects the valve clack in the valve body through pivot rotation, the through-hole has been seted up to the runner left and right sides of valve body, fixedly connected with slowly closes the device on the valve body, just slowly closes the device and runs through the through-hole and make its section of contracting and valve clack contact, works as slowly close the device when atress on through-hole length direction, it takes place elastic deformation.

The utility model discloses further set up to: slowly close the device and include the piston rod of sliding connection in the through-hole, the piston rod has elasticity towards one side of valve clack, just fixedly connected with seals the gland of through-hole on the valve body, the outside cover of piston rod is equipped with compression spring, compression spring's both ends receive the piston rod towards one end and the gland restriction of valve clack.

The utility model discloses further set up to: the one end fixedly connected with of piston rod towards the valve clack ball head of wear-resisting fluoroplastic material, set up on the gland and hold the gliding recess of piston rod, just compression spring sets up between ball head and gland.

The utility model discloses further set up to: the valve comprises a valve body and a gland, wherein the valve body is provided with a through groove, a first threaded hole is formed in the valve body, a screw penetrating through the through groove is connected to the first threaded hole in an internal thread mode, and the head of the screw abuts against the gland.

The utility model discloses further set up to: the valve body is characterized in that a supporting piece is integrally formed in a flow channel of the valve body, a through hole is formed in the supporting piece, a rotating groove coaxial with the through hole is formed in the inner wall of the valve body, the pivot penetrates through the through hole to the rotating groove, a second threaded hole is formed in the upper end of the pivot, and a locking bolt penetrating through the through hole is in threaded connection with the second threaded hole.

The utility model discloses further set up to: and a torsion spring with two ends respectively fixedly connected with the two valve clacks is sleeved on the pivot.

The utility model discloses further set up to: the pivot is sleeved with an adjusting pad and a round washer which are positioned below the valve clack.

The utility model discloses further set up to: still include the valve gap, the trough has been seted up on the valve gap, well road junction has been seted up on the valve body, just well road junction is located the top of valve clack, just fixedly connected with is used for running through the double-screw bolt of trough on the valve body, just threaded connection has the nut that supports tight valve gap on the double-screw bolt, seal gasket has been inlayed between valve gap and the valve body.

To sum up, the utility model discloses following beneficial effect has:

the design does not hinder the closing of the valve seal, and can eliminate the phenomena of collision and damage of the water hammer to the valve seal surface and the like. The novel upper-mounted slow-closing check valve; the valve pipeline is convenient to process and manufacture, convenient to detach, convenient to install and maintain, and production cost is not increased, so that economic efficiency applied to the valve pipeline is greatly improved, comprehensive cost of using a user is saved, comprehensive competitiveness of a product is improved, and the valve pipeline is more suitable for more occasions.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a first schematic structural diagram of the present invention;

FIG. 3 is a second schematic structural view of the present invention;

fig. 4 is a third schematic structural view of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 4.

In the figure: 1. a valve body; 2. an adjustment pad; 3. a circular washer; 4. a valve flap; 5. a torsion spring; 6. a pivot; 7. locking the bolt; 8. sealing gaskets; 9. a stud; 10. a nut; 11. a valve cover; 12. a piston rod; 13. a compression spring; 14. a gland; 15. and (4) screws.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The embodiment is as follows:

a top-mounted butterfly-shaped double-valve-clack 4 check valve comprises a valve body 1, a pivot 6 positioned in the valve body 1, a valve clack 4 rotatably connected in the valve body 1 through the pivot 6, and a valve cover 11, wherein through holes are formed in the left side and the right side of a flow channel of the valve body 1, a slow closing device is fixedly connected to the valve body 1, penetrates through the through holes to enable a retraction section of the slow closing device to be in contact with the valve clack 4, and when the slow closing device is stressed in the length direction of the through holes, the slow closing device is elastically deformed.

The valve cover 11 is provided with a through groove, the valve body 1 is provided with a middle opening, the middle opening is positioned above the valve clack 4, the valve body 1 is fixedly connected with a stud 9 used for penetrating through the through groove, the stud 9 is connected with a nut 10 tightly abutting against the valve cover 11 in a threaded manner, and a sealing gasket 8 is embedded between the valve cover 11 and the valve body 1.

Integrated into one piece has support piece in the runner of valve body 1, the last perforation of having seted up of support piece, set up the turn trough with the coaxial setting of perforation on the inner wall of valve body 1, pivot 6 runs through perforation to turn the inslot, threaded hole two is seted up to the upper end of pivot 6, two threaded connection of threaded hole have and run through fenestrate locking bolt 7, the cover is equipped with both ends respectively with two valve clack 4 fixed connection's torsion spring 5 on the pivot 6, the cover is equipped with adjustment pad 2 and the round washer 3 that is located valve clack 4 below on the pivot 6.

As shown in fig. 5, the slow-closing device includes a piston rod 12 slidably connected in the through hole, the piston rod 12 has elasticity toward one side of the valve flap 4, a gland 14 fixedly connected to the valve body 1 for sealing the through hole is provided on the gland 14, a through groove is provided on the gland 14, a first threaded hole is provided on the valve body 1, a screw 15 penetrating through the through groove is connected to an internal thread of the first threaded hole, and a screw head of the screw 15 abuts against the gland 14.

The outside cover of piston rod 12 is equipped with compression spring 13, and compression spring 13's both ends receive piston rod 12 towards the one end of valve clack 4 and the restriction of gland 14, and piston rod 12 is towards the bulb of the wear-resisting fluoroplastic material of one end fixedly connected with of valve clack 4, has seted up on the gland 14 and has held the gliding recess of piston rod 12, and compression spring 13 sets up between bulb and gland 14.

When the utility model discloses a when the valve need be installed, valve clack 4 from the well mouth of valve body 1 pack into on valve pocket to fluid passage seal face, insert pivot 6 again, the lower extreme makes its hole to the turn trough that passes valve clack 4, adjustment pad 2, circular washer 3, torsion spring 5 down, twists locking bolt 7 again and locks and accomplish the installation, otherwise dismantles, twists out locking bolt 7, pulls out pivot 6, takes out valve clack 4, accomplishes the dismantlement. The installation is dismantled convenient and fast, can maintain or change valve clack 4 subassembly on line.

The medium of following current promotes two semi-circular valve clacks 4 to rotate, turn over to the back of two valve clacks 4 and laminate, the valve is opened completely, the effort of medium and the effort of the torsion spring 5 push the valve clack 4 to spread while being countercurrent, when approaching and forming the 180 level, the vertical outermost edge of the semi-circular valve clack 490 collides the head of the piston rod 12 in the slow-closing device first, because the compression spring 13 effects, form certain buffer force, has dispelled the destructive force of most water hammer phenomenon impact that produces to the sealing surface of the valve, the medium of the countercurrent keeps the effort to the back of the valve clack 4, the compression spring 13, the piston rod 12 moves to make the sealing surface of the valve clack 4 laminate the sealing surface of the valve block 1, the valve is closed completely

The slow closing devices are symmetrically arranged on the left and right sides of the flow passage of the valve, so that most of the phenomena of collision and damage of the water hammer impact force on the sealing surface of the valve and the like are reduced, the service life cycle of the valve is greatly prolonged, and the structural defect that the sealing surface of the butterfly-shaped double-flap check valve is easy to damage is overcome.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a two lamella check valves of upper assembling butterfly, includes valve body (1), pivot (6) that are located valve body (1), through pivot (6) rotation connection valve clack (4) in valve body (1), its characterized in that: the through-hole has been seted up to the runner left and right sides of valve body (1), fixedly connected with slowly closes the device on valve body (1), just slowly close the device and run through the through-hole and make it return section and valve clack (4) contact of contracting, work as slowly close the device when the atress in through-hole length direction, it takes place elastic deformation.

2. The top-loading butterfly double flap check valve of claim 1, wherein: slowly close device includes piston rod (12) of sliding connection in the through-hole, piston rod (12) have elasticity towards one side of valve clack (4), just gland (14) of fixedly connected with closed through-hole are gone up in valve body (1), the outside cover of piston rod (12) is equipped with compression spring (13), the both ends of compression spring (13) receive piston rod (12) towards one end and gland (14) restriction of valve clack (4).

3. The top loading butterfly double flap check valve of claim 2, wherein: piston rod (12) are towards the bulb of the one end fixedly connected with wear-resisting fluoroplastic material of valve clack (4), set up on gland (14) and hold the gliding recess of piston rod (12), just compression spring (13) set up between bulb and gland (14).

4. The top-loading butterfly double flap check valve of claim 2, wherein: a through groove is formed in the gland (14), a first threaded hole is formed in the valve body (1), a screw (15) penetrating through the through groove is connected to the first threaded hole in an internal thread mode, and the head of the screw (15) abuts against the gland (14) in a pressing mode.

5. The top-loading butterfly double-flap check valve of claim 1, wherein: the integrated into one piece has support piece in the runner of valve body (1), the last perforation of having seted up of support piece, set up the turn trough with the coaxial setting of perforation on the inner wall of valve body (1), pivot (6) run through and perforate to the turn trough in, threaded hole two is seted up to the upper end of pivot (6), two threaded connection of threaded hole have and run through fenestrate locking bolt (7).

6. The top-loading butterfly double-flap check valve of claim 5, wherein: and a torsion spring (5) with two ends respectively fixedly connected with the two valve clacks (4) is sleeved on the pivot (6).

7. The top-loading butterfly double flap check valve of claim 5, wherein: the pivot (6) is sleeved with an adjusting pad (2) and a round washer (3) which are positioned below the valve clack (4).

8. The top-loading butterfly double-flap check valve of claim 1, wherein: still include valve gap (11), the trough has been seted up on valve gap (11), well road junction has been seted up on valve body (1), just well road junction is located the top of valve clack (4), just fixedly connected with is used for running through double-screw bolt (9) of trough on valve body (1), just threaded connection has nut (10) to tight valve gap (11) on double-screw bolt (9), seal gasket (8) have been inlayed between valve gap (11) and valve body (1).