CN212564540U - Backwashing device - Google Patents

Abstract

The utility model relates to the field of valves, especially, relate to back washing unit. A back washing device is connected with a valve, the valve comprises a valve body, the valve body is provided with a valve cavity, and the back washing device comprises a pipeline; the backwashing device further comprises a first connecting piece, a second connecting piece and a first cutting piece, wherein the first connecting piece and the second connecting piece are respectively detachably connected to two ends of the first cutting piece, the first cutting piece is used for controlling the communication or the partition between the first connecting piece and the second connecting piece, one end, far away from the first cutting piece, of the first connecting piece is connected to the inlet of the valve and communicated with the valve cavity, the first connecting piece is provided with a sewage outlet, the second connecting piece is provided with a water inlet, and the water inlet, the pipeline and the sewage outlet can form a flow channel. The utility model has the advantages that: the water inlet, the drain outlet and the first cut-off part are separately and independently arranged, the calibers of the water inlet and the drain outlet can be increased, the cleaning force of the backwashing device on the valve can be increased, and the drain outlet can be prevented from being blocked by sundries.

Description

Backwashing device

Technical Field

The utility model relates to the field of valves, especially, relate to back washing unit.

Background

The valve is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and is generally applied to pipeline systems such as an independent heating system, a central heating system, a heating boiler, a central air conditioner, a floor heating system, a solar heating system and the like.

When the existing valve is used for a long time, sundries are easily accumulated in the valve to block the valve, so that the normal work of the valve is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model discloses to above-mentioned technical problem, provide a back washing unit, technical scheme is as follows:

a back washing device is used for washing a valve, the valve comprises a valve body, the valve body is provided with a valve cavity, the valve body is provided with a connecting hole communicated with the valve cavity, the back washing device comprises a pipeline, and one end of the pipeline is connected with the connecting hole; the back washing device further comprises a first connecting piece, a second connecting piece and a first cut-off piece, wherein the first connecting piece and the second connecting piece are detachably connected to the two ends of the first cut-off piece respectively, the first cut-off piece is used for controlling communication or partition between the first connecting piece and the second connecting piece, one end of the first cut-off piece is far away from the first connecting piece, is connected to the inlet of the valve and is communicated with the valve cavity, the first connecting piece is provided with a sewage outlet, the second connecting piece is provided with a water inlet, and the water inlet, the pipeline and the sewage outlet can form a flow channel.

So set up, can be right the valve is washed to guarantee that the valve normally works, and will the water inlet reaches the drain the first cut-off part separately sets up, can increase the water inlet reaches the bore of drain, in order to increase the inflow, can increase back flush unit is right the washing dynamics of first exhaust valve, and the drain of great bore can prevent the drain is blockked up by debris.

In an embodiment of the present invention, the backwashing device further includes a second cut-off member, one end of the second cut-off member is connected to the opening of the water inlet, and the other end of the second cut-off member is connected to the connecting hole.

In one embodiment of the invention, the second cut-off is connected to the connecting hole by a hose.

So set up, can make corresponding adjustment in actual installation, just the hose flexibility is high, the quality is light.

In an embodiment of the present invention, the hose is provided with pipe connectors at two ends thereof, and the two ends of the hose are connected to the second cut-off member and the connecting hole through the pipe connectors, respectively.

The arrangement is such that the connection by means of the pipe connector prevents leakage at the connection of the hoses.

In an embodiment of the present invention, the second cut-off is connected to the water inlet through a hard pipe.

So set up, can support second cut-off and the hose.

In an embodiment of the present invention, the drain opening is provided with a third cut-off member for opening/closing the drain opening.

In an embodiment of the invention, the second and/or third shut-off member is a ball valve.

In one embodiment of the present invention, the first shut-off member is a butterfly valve.

So set up, can shorten maintenance time.

In an embodiment of the present invention, the back washing device further includes a filter screen, the filter screen includes a filter portion and an installation portion connected to each other, the installation portion surrounds the filter portion, the installation portion is installed in the first connecting member is kept away from the end surface of one end of the first cutting member, the filter portion is located in the first connecting member.

So set up, can filter to the medium that gets into the valve earlier to prevent that impurity from getting into the valve and blockking up the valve.

In an embodiment of the present invention, the filter screen is "V" shaped, "U" shaped or "C" shaped.

By such arrangement, the filtering area can be enlarged.

Compared with the prior art, the utility model provides a pair of back flush unit for wash the valve, this back flush unit is through separately setting up drain, water inlet, first disconnected piece, and drain and water inlet setting can be increaseed on the device of difference the drain reaches the bore of water inlet to increase the inflow, and then the increase back flush unit is right the washing dynamics of valve, and the drain of great bore can prevent the drain is blockked up by debris.

Drawings

Fig. 1 is a schematic structural view of the back washing device connected to the valve.

The symbols in the drawings represent the following meanings:

100. a valve block; 10. a valve; 11. a filter screen; 12. a valve body; 121. connecting holes; 13. a valve cavity; 20. a backwashing device; 21. a pipeline; 22. a first connecting member; 221. a sewage draining outlet; 222. a third cut-off; 23. a second connecting member; 231. a water inlet; 24. a first cutoff member; 25. a second cut-off; 26. a filter screen; 261. an installation part; 262. a filtering part; 28. a hose; 281. a pipe connector; 29. and (4) hard tubes.

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.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a backwash assembly 20 is provided in accordance with the present invention and is connected to a valve 10 to form a valve assembly 100, the valve assembly 100 being used in a piping system (not shown). In this embodiment, the valve group is an exhaust valve group, is applied to a central heating system or a central air conditioning system, and is installed at the highest position of a pipeline system to exhaust gas in the pipeline system so as to prevent the pipeline system from generating air resistance; when the pipeline system needs to stop working due to faults, the exhaust valve group can prevent the pipeline system from generating negative pressure to cause pipeline vibration or rupture. In other embodiments, the valve block 100 may also be an electromagnetic valve block, a shut-off valve block, or other type of valve block.

Specifically, referring to fig. 1, a back-washing unit 20 is installed at the valve 10, and the back-washing unit 20 can wash the valve 10. In the present embodiment, the valve 10 is a compound exhaust valve, but in other embodiments, the valve 10 may also be a micro exhaust valve, a solenoid valve, a ball valve, or other types of valves.

It can be understood that the medium in the pipe system enters from the inlet of the valve 10, and during the long-term operation, dust or impurities from the pipe system can be accumulated inside the valve 10 to block the valve 10, thereby affecting the normal operation of the valve 10.

Further, the valve 10 includes a valve body 12, a valve cavity 13 is formed in the valve body 12, a connection hole 121 is formed in a side surface of the valve body 12 and is communicated with the valve cavity 13, the backwashing device 20 includes a pipeline 21, and one end of the pipeline 21 is connected to the connection hole 121 so that a medium can enter the valve cavity 13 to flush the valve 10.

Preferably, in this embodiment, the valve 10 is a floating ball type exhaust valve, the valve 10 further includes a valve cover (not shown), an exhaust cover (not shown), and a floating ball (not shown), two ends of the valve body 12 are open, one end of the valve body is an inlet of the valve 10, the valve cover is disposed at an opening of the valve body far away from the inlet of the valve 10, an exhaust port (not shown) is disposed at one end of the valve cover far away from the inlet of the valve 10, the exhaust cover is disposed at the exhaust port, the floating ball is disposed in the valve cavity 13, a connecting rod (not labeled in the figure) is disposed between the floating ball and the valve cover, and two ends of. When the valve 10 is in an exhaust state, the floating ball pulls down one end of the connecting rod due to the action of gravity, so that a gap appears in the exhaust port, and air in the pipeline system is exhausted from the exhaust port through the gap; along with the discharge of air, the liquid level rises, and the floater floats upwards under the buoyancy of medium, and the sealed terminal surface of floater pushes up the gas vent gradually until whole gas vent is blocked up by the exhaust lid completely, and valve 10 is in the closed condition completely this moment.

In another embodiment, the valve 10 may also be an electromagnetic valve, and both ends of the electromagnetic valve are respectively communicated with the pipeline system, and when the valve 10 works normally, the medium enters from an inlet of the electromagnetic valve and then flows out from an outlet of the electromagnetic valve.

With continued reference to FIG. 1, the backflushing device 20 further includes a first connecting member 22, a second connecting member 23, and a first blocking member 24. One end of the first connecting piece 22 is detachably connected to the inlet of the valve 10 and is communicated with the valve cavity 13, the other end of the first connecting piece is connected to the second connecting piece 23 and is selectively communicated with the second connecting piece 23, the first cut-off piece 24 is arranged between the first connecting piece 22 and the second connecting piece 23, the first cut-off piece 24 is detachably connected with the first connecting piece 22 and the second connecting piece 23, and the first cut-off piece 24 controls the communication or the partition between the first connecting piece 22 and the second connecting piece 23. When the valve 10 works normally, the first connecting piece 22 is communicated with the second connecting piece 23, and a medium in a pipeline system enters the valve cavity 13 from an inlet of the valve 10; when the valve 10 needs to be flushed, the first connector 22 and the second connector 23 are isolated. The first shut-off member 24 and the first and second connecting members 22 and 23 may be flange-connected and bolt-connected.

In this embodiment, the first connecting member 22 and the second connecting member 23 are connecting pipes, which are simple in structure and low in cost, and in other embodiments, the first connecting member 22 and the second connecting member 23 may also be a shut-off valve such as a gate valve or other devices.

Specifically, the first connecting member 22 is provided with a sewage outlet 221, the second connecting member 23 is provided with a water inlet 231, and one end of the pipeline 21 far away from the connecting hole 121 is connected to the water inlet 231. When the valve 10 needs to be flushed, the water inlet 231, the pipe 21 and the sewage outlet 221 form a flow path to reversely flush the valve 10. It can be understood that the medium enters from the inlet of the valve 10, the impurities are accumulated in the valve 10, the medium enters the pipe 21 from the water inlet 231, enters the valve cavity 13 from the connecting hole 121, and is flushed from the reverse direction, so that the impurities are flushed to the sewage outlet 221 and discharged.

The utility model discloses a back washing unit 20 sets up water inlet 231 and drain 221 on the article of difference, can increase the bore of water inlet 231 and drain 221, and the water inlet 231 of great bore can increase the inflow to strengthen the flushing force degree, and the drain 221 of great bore can prevent that drain 221 from being blockked up by impurity.

In one embodiment, the backwash assembly 20 further includes a filter screen 26, the filter screen 26 being adapted to filter media entering the valve 10 to protect the valve 10 from clogging by contaminants. Impurities accumulate on the side of filter screen 26 adjacent first shut-off element 24, and backwash assembly 20 is capable of backwashing filter screen 26.

The filter screen 26 includes an installation portion 261 and a filter portion 262 that are connected to each other, the installation portion 261 is disposed around the filter portion 262, the installation portion 261 is installed on an end surface of the first connecting member 22 that is far from the end of the first cutoff member 24, and the filter portion 262 is disposed in the first connecting member 22.

Preferably, the filter screen 26 is "V" shaped, "U" shaped, or "C" shaped, and it can be understood how to arrange the filter screen 26 to increase the filtering area and the filtering efficiency, wherein when the filter screen 26 is "C", the opening thereof faces the inlet of the valve 10. In other embodiments, filter screen 26 may have other shapes that increase the filter area.

Further, a third cut-off piece 222 is arranged at the sewage draining exit 221, and the third cut-off piece 222 is used for controlling the opening/closing of the sewage draining exit 221. When sewage drainage is needed, the third cut-off piece 222 is opened so that impurities in the valve 10 or in the filter screen 26 are drained from the sewage drainage port 221; when the drain is not required, the third shut-off member 222 is closed to prevent the medium from leaking out of the drain port 221.

It will be appreciated that when the valve 10 is operating normally, the first shut-off member 24 is open and the third shut-off member 222 is closed; when the valve 10 needs to be repaired, the first shut-off member 24 is closed and the third shut-off member 222 is opened, so that the medium in the pipeline enters the pipeline 21 from the water inlet 231 and the impurities are discharged from the sewage discharge port 221.

In this embodiment, the first shut-off member 24 is a butterfly valve, which has a short opening/closing time and can shorten the maintenance time. More specifically, the first shut-off member 24 is a pinch butterfly valve, and in other embodiments, the first shut-off member 24 may be other types of butterfly valves or other types of shut-off members.

With continued reference to fig. 1, the backwashing device 20 further includes a second cut-off member 25, the second cut-off member 25 is disposed on the pipe 21, one end of the second cut-off member 25 is connected to the connection hole 121, and the other end is connected to the water inlet 231, and the second cut-off member 25 is used for controlling the opening and closing of the backwashing device 20. When the valve 10 is normally operated, the second shut-off member 25 is closed to prevent the water inlet 231 from being communicated with the soil discharge opening 221 through the pipe 21; when service is required, the second shut-off 25 is opened.

Preferably, the second shut-off member 25 is connected to the connection hole 121 by a hose 28 to reduce the weight of the valve block 100, and at the same time, the hose 28 can be bent appropriately with flexibility. In this embodiment, the hose 28 is a stainless steel braided hose 28, and the stainless steel braided hose 28 has good flexibility and wear resistance, and in other embodiments, the hose 28 may be other hoses such as rubber.

The hose 28 has pipe connectors 281 at both ends thereof, and the hose 28 is connected to the connection hole 121 and the second block 25 through the pipe connectors 281 at both ends thereof, so that the hose 28 is hermetically connected to the connection hole 121 and the second block 25.

The second shut-off element 25 is connected to the water inlet 231 via a hard tube 29, the hard tube 29 supporting the upper part of the backflushing device 20, i.e. the second shut-off element 25 and the hose 28. The hard pipe 29 may be a non-repaired steel pipe, a cast iron pipe, or another hard pipe, and may be selected according to the material of the valve 10.

Preferably, in this embodiment, the second block 25 and/or the third block 222 are ball valves, which have simple structure, light weight and small volume. In other embodiments, the second shut-off element 25 and/or the third shut-off element 222 can also be a shut-off valve or another valve element that can have a shut-off function, depending on the design.

During normal operation of the valve 10, the first shut-off member 24 is opened, the second shut-off member 25 and the third shut-off member 222 are closed, and the medium in the pipe system enters the first connecting member 22 from the second connecting member 23 and then enters the valve chamber 13 from the inlet of the valve 10.

When the valve 10 or the filter screen 26 is too much accumulated and needs to be overhauled, the first cut-off piece 24 is closed, the second cut-off piece 25 and the third cut-off piece 222 are opened, the medium in the pipeline system flows in from the water inlet 231, then enters the valve cavity 13 from the connecting hole 121, washes the filter screen 26 from the side surface of the filter screen 26 far away from the first cut-off piece 24, and washes the impurities to the sewage outlet 221 to be discharged.

The utility model discloses a back flush unit 20 separately sets up water inlet 231, drain 221 and first disconnected piece 24, and water inlet 231 and drain 221 set up on the device of difference to increase the bore of water inlet 231 and drain 221, with the effect that improves the back flush, can prevent that drain 221 from being blockked up simultaneously.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A back washing device is connected with a valve (10), the valve (10) comprises a valve body (12), the valve body (12) is provided with a valve cavity (13), the valve body (12) is provided with a connecting hole (121) communicated with the valve cavity (13), the back washing device comprises a pipeline (21), and one end of the pipeline (21) is connected with the connecting hole (121);

the backwashing device is characterized by further comprising a first connecting piece (22), a second connecting piece (23) and a first cutoff piece (24), wherein the first connecting piece (22) and the second connecting piece (23) are respectively detachably connected to two ends of the first cutoff piece (24), the first cutoff piece (24) is used for controlling the communication or partition between the first connecting piece (22) and the second connecting piece (23), one end of the first connecting piece (22) far away from the first cutoff piece (24) is connected to an inlet of the valve (10) and communicated with the valve cavity (13), a sewage outlet (221) is formed in the first connecting piece (22), a water inlet (231) is formed in the second connecting piece (23), and the water inlet (231), the pipeline (21) and the sewage outlet (221) can form a flow channel.

2. The backflushing apparatus according to claim 1, further comprising a second shut-off member (25) provided on the pipe (21), wherein one end of the second shut-off member (25) is connected to the opening of the water inlet (231) and the other end is connected to the connecting hole (121).

3. The backflushing device according to claim 2, characterized in that the second shut-off element (25) is connected to the connection opening (121) by a hose (28).

4. The backflushing apparatus according to claim 3, characterized in that the hose (28) is provided at both ends thereof with pipe connectors (281), and both ends of the hose (28) are connected to the second block (25) and the connecting hole (121) through the pipe connectors (281).

5. The backflushing device according to claim 2, characterized in that the second shut-off element (25) is connected to the water inlet (231) by a hard tube (29).

6. The backwashing device as claimed in claim 2, wherein a third shut-off member (222) is provided at the sewage discharge opening (221), and the third shut-off member (222) is used for opening/closing the sewage discharge opening (221).

7. The backflushing device according to claim 6, characterized in that the second shut-off (25) and/or the third shut-off (222) is/are a ball valve.

8. The backflushing device according to claim 1, characterized in that the first shut-off element (24) is a butterfly valve.

9. The backwash device according to claim 1, wherein the backwash device further comprises a filter screen (26), the filter screen (26) comprises a filter portion (262) and a mounting portion (261) connected to each other, the mounting portion (261) is disposed around the filter portion (262), the mounting portion (261) is mounted on an end surface of the first connecting member (22) at an end thereof remote from the first cutoff member (24), and the filter portion (262) is disposed in the first connecting member (22).

10. The backflushing device according to claim 9, characterized in that the filter screen (26) is "V", "U" or "C".

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