CN211344125U

CN211344125U - Throttle low resistance backflow preventer easy to assemble

Info

Publication number: CN211344125U
Application number: CN201921840377.2U
Authority: CN
Inventors: 李士涛
Original assignee: Shanghai Runshui Fluid Equipment Co ltd
Current assignee: Shanghai Runshui Fluid Equipment Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-25
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a throttling low resistance backflow preventer convenient to install, which comprises a valve body, wherein two ends of the valve body are both flange-connected with first installation blocks, one side of the two first installation blocks is provided with a second installation block, the two second installation blocks are provided with installation mechanisms just opposite to one side of the first installation blocks, one side of the two first installation blocks just opposite to the second installation blocks is fixedly connected with two iron blocks, one side of the two second installation blocks far away from the first installation blocks is respectively flange-connected with a water inlet pipe and a water outlet pipe, one end of the valve body close to the water inlet pipe is provided with a valve clack, one end of the valve clack far away from the water inlet pipe is provided with a backflow preventer, the top end of the valve body is flange-connected with a lower valve cover, an upper valve cover is correspondingly arranged above the lower valve cover, and a plurality of bolts are connected between the upper valve cover and the lower, meanwhile, the check valve can be conveniently mounted and dismounted through the mounting mechanism.

Description

Throttle low resistance backflow preventer easy to assemble

Technical Field

The utility model relates to a low resistance backflow preventer of throttle easy to assemble belongs to valve class technical field.

Background

The check valve is a valve in which an opening and closing member is a circular valve flap and acts by its own weight and medium pressure to block the backflow of a medium. The valve belongs to the automatic valve category, also called check valve, one-way valve, backflow valve or isolation valve, the valve clack movement mode is divided into lifting type and swing type, the check valve of this type only allows medium to flow to one direction, and prevents the opposite direction flow. Typically such valves are self-actuating, with the flap opening under the pressure of a fluid flowing in one direction; when the fluid flows in the opposite direction, the valve flap is combined by the fluid pressure and the self-weight of the valve flap to act on the valve seat, thereby cutting off the flow.

The existing check valve is generally higher in resistance to circulating media, the circulation speed of the circulating media is easily reduced, the using effect is reduced, meanwhile, the check valve is usually installed together with a water inlet pipe, a water outlet pipe and the check valve through a plurality of bolts and nuts, and the installation and the disassembly are troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low resistance backflow preventer of throttle easy to assemble to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a throttling low-resistance backflow preventer convenient to install comprises a valve body, wherein two ends of the valve body are both in flange connection with first installation blocks, one side of each of the two first installation blocks is provided with a second installation block, one side of each of the two second installation blocks, which is opposite to the first installation block, is provided with an installation mechanism, one side of each of the two first installation blocks, which is opposite to the second installation block, is fixedly connected with two iron blocks, one side of each of the two second installation blocks, which is far away from the first installation block, is respectively in flange connection with a water inlet pipe and a water outlet pipe, a valve clack is arranged at one end of the valve body close to the water inlet pipe, a backflow preventing device is arranged at one end of the valve clack far away from the water inlet pipe, the top end of the valve body is connected with a lower valve cover through a flange, an upper valve cover is correspondingly arranged above the lower valve cover, a plurality of bolts are connected between the upper valve cover and the lower valve cover through a plurality of threaded holes in a threaded mode, and nuts are connected to the bottom ends of the bolts in a threaded mode.

Preferably, the backflow prevention device comprises a rotating shaft, a rotating plate, a fixed block, a groove, a first sealing block and a sealing ring, the rotating shaft is fixedly connected to the inner wall of the valve body, the rotating plate is rotatably connected to the rotating shaft, the fixed block is arranged at one end, away from the rotating shaft, of the rotating plate, the groove matched with the fixed block is formed in the valve clack, the sealing block is arranged on one side, close to the valve clack, of the rotating plate, and the first sealing ring is arranged on the sealing block.

Preferably, two installation mechanism all includes circular slot, second sealing washer, two spouts and two iron absorption pieces, second installation piece central point puts and is equipped with the opening, the peripheral second installation piece surface of opening is equipped with the circular slot, be equipped with the second sealing washer in the circular slot, the peripheral second installation piece surface symmetry of circular slot is provided with the spout, two the one end of spout all is equipped with the entry end, two the equal fixedly connected with iron absorption piece of the other end inner wall of spout.

Preferably, the pivoting plate is disposed in an inclined state while being in close contact with the valve flap.

Preferably, two the iron plate all is "T" shape setting, two the iron plate respectively with corresponding spout sliding connection.

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

1. the utility model discloses an it prevents the refluence device to be provided with, including the pivot, the rotor plate, the fixed block, a groove, first seal block and sealing washer, pivot fixed connection is at the valve body inner wall, the rotation is connected with the rotor plate in the pivot, the one end that the rotor plate kept away from the pivot is equipped with the fixed block, be provided with the recess that matches with the fixed block on the valve clack, one side that the rotor plate is close to the valve clack is equipped with the seal block, be equipped with first sealing washer on the seal block, and the rotor plate is placed with the valve clack when being in close contact with in the state of inclining, the medium gets into from the inlet tube, when the pressure that is close to the inlet tube end in the valve body is greater than the rotor plate, seal block and the sum of flow resistance, the valve is opened, the medium normally circulates to the outlet pipe, otherwise, the resistance received when the medium circulates is also reduced, and the circulation speed of the medium is ensured.

2. The utility model discloses be provided with two installation mechanisms simultaneously, two installation mechanisms all include the circular slot, the second sealing washer, two spouts and two iron absorption pieces, second installation piece central point puts and is equipped with the opening, the peripheral second installation piece surface of opening is equipped with the circular slot, be equipped with the second sealing washer in the circular slot, the peripheral second installation piece surface symmetry of circular slot is provided with the spout, the one end of two spouts all is equipped with the entry end, the equal fixedly connected with iron absorption piece of the other end inner wall of two spouts, when installing the check valve, correspond respectively two iron blocks on the first installation piece and place the entry end, rotate the valve body again, contact two iron blocks with the iron absorption piece that corresponds respectively, thereby adsorb two iron blocks, fix the iron block position, thereby install first installation piece and second installation piece together, the convenience all ten minutes is dismantled in the installation.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of a second mounting block of the present invention;

fig. 3 is a schematic view of the iron block structure of the present invention.

In the figure: 1. a water inlet pipe; 2. a second mounting block; 3. a first mounting block; 4. a valve flap; 5. a water outlet pipe; 6. a backflow prevention device; 61. a rotating shaft; 62. a first seal ring; 63. a sealing block; 64. a fixed block; 65. a groove; 66. a rotating plate; 7. a bolt; 8. an upper valve cover; 9. a lower valve cover; 10. a nut; 11. a port; 12. an installation mechanism; 121. a second seal ring; 122. an iron absorption block; 123. a circular groove; 124. a chute; 125. an inlet end; 13. an iron block; 14. a valve body.

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. 1-3, the present invention provides a technical solution: a throttling low-resistance backflow preventer convenient to install comprises a valve body 14, wherein two ends of the valve body 14 are both in flange connection with first installation blocks 3, one side of each of the two first installation blocks 3 is provided with a second installation block 2, one side of each of the two second installation blocks 2, which is opposite to the first installation block 3, is provided with an installation mechanism 12, one side of each of the two first installation blocks 3, which is opposite to the second installation block 2, is fixedly connected with two iron blocks 13, one sides of the two second installation blocks 2, which are far away from the first installation blocks 3, are respectively in flange connection with a water inlet pipe 1 and a water outlet pipe 5, one end of the valve body 14, which is close to the water inlet pipe 1, is provided with a valve clack 4, one end of the valve clack 4, which is far away from the water inlet pipe 1, is provided with a backflow preventing device 6, the top end of the valve body 14 is in flange, the bottom end of the plurality of bolts 7 is in threaded connection with a nut 10, a medium enters the valve body 14 from the water inlet pipe 1, enters the water outlet pipe 5 through the backflow prevention device 6 in the valve body 14, can well prevent the medium from flowing backwards through the backflow prevention device 6, and can be installed and disassembled more conveniently through the installation mechanism 12 when being installed.

The backflow prevention device 6 comprises a rotating shaft 61, a rotating plate 66, a fixed block 64, a groove 65, a first sealing block 63 and sealing rings, the rotating shaft 61 is fixedly connected to the inner wall of the valve body 14, the rotating plate 66 is rotatably connected to the rotating shaft 61, the fixed block 64 is arranged at one end, far away from the rotating shaft 61, of the rotating plate 66, the groove 65 matched with the fixed block 64 is arranged on the valve clack 4, the sealing block 63 is arranged at one side, close to the valve clack 4, of the rotating plate 66, the first sealing ring 62 is arranged on the sealing block 63, a medium enters from the water inlet pipe 1, when the pressure at one end, close to the water inlet pipe 1, in the valve body 14 is greater than the sum of the rotating plate 66, the sealing block 63 and flow resistance, the valve is opened, the medium normally flows into the water outlet pipe 5, otherwise, the valve is closed, the medium in the water outlet pipe 5 is, the central position of the second mounting block 2 is provided with a through hole 11, the surface of the second mounting block 2 at the periphery of the through hole 11 is provided with a circular groove 123, a second sealing ring 121 is arranged in the circular groove 123, sliding grooves 124 are symmetrically arranged at the surface of the second mounting block 2 at the periphery of the circular groove 123, one ends of the two sliding grooves 124 are respectively provided with an inlet end 125, the inner walls of the other ends of the two sliding grooves 124 are respectively and fixedly connected with iron absorbing blocks 122, when the check valve is mounted, the two iron blocks 13 on the first mounting block 3 are respectively and correspondingly placed at the inlet ends 125, then the valve body 14 is rotated, the two iron blocks 13 are respectively contacted with the corresponding iron absorbing blocks 122, so that the two iron blocks 13 are adsorbed, the position of the iron block 13 is fixed, so that the first mounting block 3 and the second mounting block 2 are mounted together, the mounting and the dismounting are both very convenient, the rotating plate 66 is placed in an inclined state when being in, guarantee the circulation speed of medium, two iron plate 13 all are "T" shape setting, two iron plate 13 respectively with the spout 124 sliding connection that corresponds, more stable with first installation piece 3 and second installation piece 2 installation together.

Specifically, when the utility model is used, a medium enters from the water inlet pipe 1, when the pressure near one end of the water inlet pipe 1 in the valve body 14 is larger than the sum of the rotating plate 66, the sealing block 63 and the flow resistance, the valve is opened, the medium normally circulates into the water outlet pipe 5, otherwise, the valve is closed, the medium in the water outlet pipe 5 is prevented from flowing back into the water inlet pipe 1, meanwhile, because the rotating plate 66 is obliquely arranged when being in close contact with the valve clack 4, the resistance received when the medium circulates is also reduced, the circulation speed of the medium is ensured, when the check valve is installed, two iron blocks 13 on the first installation block 3 are correspondingly arranged at the inlet end 125 respectively, then the valve body 14 is rotated, the two iron blocks 13 are respectively contacted with the corresponding iron absorbing blocks 122, thereby the two iron blocks 13 are adsorbed, the position of the iron block 13 is fixed, thereby the first installation block 3 and the second installation block 2 are installed together, the installation and the disassembly are very convenient.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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

1. The throttling low-resistance backflow preventer convenient to mount comprises a valve body (14) and is characterized in that two ends of the valve body (14) are connected with a first mounting block (3) in a flange mode, two first mounting blocks (3) are arranged on one sides of the first mounting blocks (2), two second mounting blocks (2) are arranged on one sides of the first mounting blocks (3) in a flange mode respectively and are provided with mounting mechanisms (12), two first mounting blocks (3) are fixedly connected with two iron blocks (13) on one sides of the second mounting blocks (2), one sides of the second mounting blocks (2) far away from the first mounting blocks (3) are respectively connected with a water inlet pipe (1) and a water outlet pipe (5) in a flange mode, a valve clack (4) is arranged at one end, close to the water inlet pipe (1), of the valve clack (4) far away from the water inlet pipe (1) and is provided with a backflow preventing device (6), valve body (14) top flange joint has lower valve gap (9), valve gap (9) top correspondence is provided with upper valve gap (8) down, there are a plurality of bolts (7), a plurality of through a plurality of screw hole threaded connection between upper valve gap (8) and lower valve gap (9) bolt (7) bottom threaded connection has nut (10).

2. An easy-to-install throttling low resistance backflow preventer as claimed in claim 1, wherein: prevent refluence device (6) including pivot (61), rotor plate (66), fixed block (64), recess (65), first sealed piece (63) and sealing washer, pivot (61) fixed connection is in valve body (14) inner wall, it is connected with rotor plate (66) to rotate on pivot (61), the one end that pivot (61) were kept away from in rotor plate (66) is equipped with fixed block (64), be provided with on valve clack (4) with fixed block (64) matched with recess (65), one side that rotor plate (66) are close to valve clack (4) is equipped with sealed piece (63), be equipped with first sealing washer (62) on sealed piece (63).

3. An easy-to-install throttling low resistance backflow preventer as claimed in claim 1, wherein: two installation mechanism (12) all include circular slot (123), second sealing washer (121), two spout (124) and two iron absorption pieces (122), second installation piece (2) central point puts and is equipped with through hole (11), through hole (11) peripheral second installation piece (2) surface is equipped with circular slot (123), be equipped with second sealing washer (121) in circular slot (123), circular slot (123) peripheral second installation piece (2) surface symmetry is provided with spout (124), two the one end of spout (124) all is equipped with entry end (125), two the equal fixedly connected with of other end inner wall of spout (124) inhales iron absorption piece (122).

4. An easy-to-install throttling low resistance backflow preventer as claimed in claim 2, wherein: the rotating plate (66) is placed in an inclined state when being in close contact with the valve flap (4).

5. An easy-to-install throttling low resistance backflow preventer as claimed in claim 1, wherein: two iron blocks (13) all are "T" shape setting, two iron blocks (13) respectively with corresponding spout (124) sliding connection.