CN211474882U

CN211474882U - Backflow prevention valve

Info

Publication number: CN211474882U
Application number: CN201922136646.3U
Authority: CN
Inventors: 蔡文伟; 洪玲卿
Original assignee: Shenyang Heqing Technology Co ltd
Current assignee: Shenyang Heqing Technology Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-09-11
Anticipated expiration: 2029-12-03

Abstract

The utility model discloses a prevent valve that flows backwards, comprises a valve body, the front end of valve body is provided with first valve port, the rear end of valve body is provided with the second valve port, the screw thread face has been seted up to the surface of second valve port, the rear end cover of second valve port has flange, pass through screw thread face threaded connection between flange and the second valve port, the upper end surface of valve body is provided with the top flange, the upper end surface of top flange is provided with and stretches into inboard case, one side that the upper end surface of top flange is close to the case is provided with scale removal structure. A prevent valve that flows backwards, through being provided with the scale removal structure, the later stage scale removal of being convenient for is favorable to the later stage maintenance of valve body, through being provided with flange and flank of thread, when being connected with the mouth of pipe, can ensure sealed effect.

Description

Backflow prevention valve

Technical Field

The utility model relates to a valve field, in particular to prevent valve that flows backwards.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, and can be divided into a shut-off valve, a check valve, a regulating valve and the like according to functions of the valve, wherein the valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, the backflow preventing valve is a valve capable of preventing liquid from flowing backwards, the valve is ensured to flow liquid along one direction, the existing backflow preventing valve is inconvenient to clean dirt such as scale on the inner side and the like, secondly, the backflow preventing valve cannot be flexibly connected at a pipe fitting during connection, and is not flexible enough, so that the backflow preventing valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a valve prevents flowing backwards can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the backflow prevention valve comprises a valve body, wherein a first valve port is arranged at the front end of the valve body, a second valve port is arranged at the rear end of the valve body, a threaded surface is formed in the outer surface of the second valve port, a connecting flange is sleeved at the rear end of the second valve port, the connecting flange is in threaded connection with the second valve port through the threaded surface, a top connecting disc is arranged on the outer surface of the upper end of the valve body, a valve core extending into the inner side is arranged on the outer surface of the upper end of the top connecting disc, and a descaling structure is arranged on one side, close to the valve core, of the outer surface of the upper end of the.

Preferably, the first valve port and the second valve port are both communicated with the inner side of the valve body, a flange is fixedly connected to the front end of the first valve port, and the inner diameters of the first valve port and the second valve port are the same.

Preferably, the upper end of the valve core is connected with a rotating head, the rotating head is fixedly connected with the valve core, the valve core penetrates through the outer surface of the upper end of the jacking disc, and the valve core is movably connected with the jacking disc.

Preferably, flange includes ring flange, rubber circle and inlays the mouth, one side surface in the ring flange is seted up to the embedding mouth, rubber circle activity card is in the inboard of inlaying the mouth, it all is the annular shape with the rubber circle to inlay the mouth, the screw thread is seted up to the inner wall of ring flange, be threaded connection between ring flange and the screw thread face.

Preferably, the outer surface of the flange plate is provided with a plurality of groups of bolt holes in a penetrating manner near the edge, and the bolt holes are arranged in an annular array.

Preferably, the descaling structure is including inserting a section of thick bamboo, sealing bolt and sealing washer, the inboard cavity of inserting a section of thick bamboo, insert a section of thick bamboo and pass the upper end surface of top flange, sealing bolt passes the inboard of inserting a section of thick bamboo, sealing bolt and insert for threaded connection between the section of thick bamboo, sealing bolt's head is located the top of inserting a section of thick bamboo, the sealing washer is located the upper end edge mouth department of inserting a section of thick bamboo, and sealing bolt passes the sealing washer.

Compared with the prior art, the utility model discloses following beneficial effect has: this anti-backflow valve, through being provided with scale removal structure, through rotating the sealing bolt, screw out sealing bolt from the inboard that inserts a section of thick bamboo, later can be with the help of inserting a section of thick bamboo, let in the scale remover to the inboard that inserts a section of thick bamboo, the scale remover falls to the inboard of valve body from inserting a section of thick bamboo inboard, play the effect of scale removal, wash away and play the effect of scale removal when follow-up liquid circulates, be favorable to the later maintenance of valve body, through being provided with flange and helicoid, connect the rear end at the second valve port with the mouth of pipe soon, later rotating ring flange makes flange be close to the mouth of pipe and extrudees the mouth of pipe, the rubber circle receives the effect of mouth of pipe and ring flange and is extrudeed, thereby better sealed effect is played, can take out the rubber circle from the inboard of embedding mouth, thereby change, in.

Drawings

Fig. 1 is a schematic view of the overall structure of a backflow prevention valve of the present invention;

fig. 2 is a sectional view of a backflow prevention valve of the present invention;

fig. 3 is a schematic view of a connecting flange of a backflow prevention valve of the present invention;

fig. 4 is a schematic view of the descaling structure of the backflow prevention valve of the present invention.

In the figure: 1. a valve body; 2. a first valve port; 3. a second valve port; 31. a thread face; 4. a connecting flange; 41. a flange plate; 42. a rubber ring; 43. embedding an inlet; 5. a top connection disc; 6. a valve core; 7. rotating the head; 8. a descaling structure; 81. an insertion cartridge; 82. a seal bolt; 83. and (5) sealing rings.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 4, the backflow prevention valve comprises a valve body 1, a first valve port 2 is arranged at the front end of the valve body 1, a second valve port 3 is arranged at the rear end of the valve body 1, a threaded surface 31 is arranged on the outer surface of the second valve port 3, a connecting flange 4 is sleeved at the rear end of the second valve port 3, the connecting flange 4 is in threaded connection with the second valve port 3 through the threaded surface 31, a top flange 5 is arranged on the outer surface of the upper end of the valve body 1, a valve core 6 extending into the inner side is arranged on the outer surface of the upper end of the top flange 5, and a descaling structure 8 is arranged on one side, close to the valve core 6, of the outer.

The first valve port 2 and the second valve port 3 are both communicated with the inner side of the valve body 1, the front end of the first valve port 2 is fixedly connected with a flange, and the inner diameters of the first valve port 2 and the second valve port 3 are the same, so that the liquid flow is ensured to be the same as the liquid flow in and out, and the valve is prevented from being damaged.

The upper end of the valve core 6 is connected with a rotating head 7, the rotating head 7 is fixedly connected with the valve core 6, the valve core 6 penetrates through the outer surface of the upper end of the jacking disc 5, the valve core 6 is movably connected with the jacking disc 5, the valve core 6 can move up and down, and a piston below the valve core is driven to open or close the inner cavity of the valve body 1.

The flange 4 includes ring flange 41, rubber circle 42 and embedding mouth 43, and embedding mouth 43 sets up in one side surface of ring flange 41, and rubber circle 42 activity card is in the inboard of embedding mouth 43, and embedding mouth 43 and rubber circle 42 all are the annular shape, and the screw thread is seted up to the inner wall of ring flange 41, be threaded connection between ring flange 41 and the helicoid 31, can rotate the position that ring flange 41 adjusted ring flange 41 to ensure closely laminating with the mouth of pipe of being connected.

The outer surface of ring flange 41 is close to border department and runs through and has seted up the bolt hole, and the quantity of bolt hole is a plurality of groups, and the bolt hole is the annular array and arranges, if the mouth of pipe periphery of connecting sets up the flange, then can additionally consolidate with the help of the bolt hole.

The descaling structure 8 comprises an insertion cylinder 81, a sealing bolt 82 and a sealing ring 83, wherein the insertion cylinder 81 is hollow inside, the insertion cylinder 81 penetrates through the outer surface of the upper end of the abutting disc 5, the sealing bolt 82 penetrates through the inner side of the insertion cylinder 81, the sealing bolt 82 is in threaded connection with the insertion cylinder 81, the head of the sealing bolt 82 is located above the insertion cylinder 81, the sealing ring 83 is located at the edge of the upper end of the insertion cylinder 81, and the sealing bolt 82 penetrates through the sealing ring 83 to play a role in sealing and prevent liquid from seeping out.

It should be noted that, the utility model relates to a backflow prevention valve, when using, connect the body respectively with first valve port 2 and second valve port 3, control the circulation of liquid, the user makes case 6 control the inboard break-make of valve body 1 through rotating rotary head 7, in order to ensure the circulation and the block-up of liquid, the user rotates sealing bolt 82, seal bolt 82 is unscrewed from the inboard of inserting section of thick bamboo 81, later can let in the scale remover to the inboard of inserting section of thick bamboo 81 with the help of inserting section of thick bamboo 81, the scale remover falls to the inboard of valve body 1 from inserting section of thick bamboo 81, play the effect of scale removal, wash and play the effect of scale removal when subsequent liquid circulates, be favorable to the later maintenance of valve body 1, the user connects the mouth of pipe in the rear end of second valve port 3 soon, later the rotating ring flange 41 makes flange 4 be close to the mouth of pipe and extrudes the mouth of pipe, rubber ring 42 receives the effect of mouth of pipe and ring, thereby, a good sealing effect is achieved, and the rubber ring 42 can be taken out from the inner side of the insertion opening 43 and replaced to ensure the sealing effect.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a prevent valve that flows backwards, includes valve body (1), its characterized in that: the descaling structure is characterized in that a first valve port (2) is arranged at the front end of the valve body (1), a second valve port (3) is arranged at the rear end of the valve body (1), a threaded surface (31) is formed in the outer surface of the second valve port (3), a connecting flange (4) is sleeved at the rear end of the second valve port (3), the connecting flange (4) is in threaded connection with the second valve port (3) through the threaded surface (31), a jacking disc (5) is arranged on the outer surface of the upper end of the valve body (1), a valve core (6) extending into the inner side is arranged on the outer surface of the upper end of the jacking disc (5), and a descaling structure (8) is arranged on one side, close to the valve core (6), of the outer surface of the upper end of the.

2. The backflow prevention valve as claimed in claim 1, wherein: the first valve port (2) and the second valve port (3) are communicated with the inner side of the valve body (1), a flange is fixedly connected to the front end of the first valve port (2), and the inner diameters of the first valve port (2) and the second valve port (3) are the same.

3. The backflow prevention valve as claimed in claim 1, wherein: the upper end of the valve core (6) is connected with a rotating head (7), the rotating head (7) is fixedly connected with the valve core (6), the valve core (6) penetrates through the outer surface of the upper end of the jacking disc (5), and the valve core (6) is movably connected with the jacking disc (5).

4. The backflow prevention valve as claimed in claim 1, wherein: connecting flange (4) include ring flange (41), rubber circle (42) and inlay mouth (43), inlay a mouth (43) and set up in one side surface of ring flange (41), rubber circle (42) activity card is in the inboard of inlaying mouth (43), it all is the annular shape with rubber circle (42) to inlay mouth (43), the screw thread is seted up to the inner wall of ring flange (41), be threaded connection between ring flange (41) and helicoid (31).

5. The backflow prevention valve as claimed in claim 4, wherein: bolt holes are formed in the position, close to the edge, of the outer surface of the flange plate (41) in a penetrating mode, the number of the bolt holes is a plurality of groups, and the bolt holes are arranged in an annular array mode.

6. The backflow prevention valve as claimed in claim 1, wherein: descaling structure (8) are including inserting a section of thick bamboo (81), sealing bolt (82) and sealing washer (83), the inboard cavity of inserting a section of thick bamboo (81), insert a section of thick bamboo (81) and pass the upper end surface of top flange (5), sealing bolt (82) pass the inboard of inserting a section of thick bamboo (81), sealing bolt (82) and insert for threaded connection between a section of thick bamboo (81), the head of sealing bolt (82) is located the top of inserting a section of thick bamboo (81), sealing washer (83) are located the upper end edge mouth department of inserting a section of thick bamboo (81), and sealing bolt (82) pass sealing washer (83).