CN208049492U - The visual y-type filter of pre-filtering, domestic water supplying system and circulating heating system - Google Patents

Abstract

The utility model is related to urban life hydrotechny fields, and in particular to a kind of visual y-type filter of pre-filtering, domestic water supplying system and circulating heating system.The visual y-type filter of pre-filtering provided by the utility model, including filter housings, blowdown valve, with the filter screen of cylindrical annular, the outer sheath of filter screen is equipped with pre-filter layer, in recirculated water initial service stage, because impurity is more in pipeline, precision pre-filtering is carried out by pre-filter layer, when filter core impurity is in saturation filtration condition, substitute pre-filter layer, until extraction PP cotton filter element carries out individually security personnel's filtering by strainer after water quality is relatively pure in pipeline, it can be effectively prevented because because aperture of filter screen is excessive by the way that pre-filter layer is arranged, sand grain etc. enters deposition in boiler or other air-conditioning main equipments, the safety in utilization of filter can be improved in the damage main equipment that results in blockage, reduce cost.

Description

The visual y-type filter of pre-filtering, domestic water supplying system and circulating heating system

Technical field

The utility model is related to urban life hydrotechny fields, and in particular to a kind of visual y-type filter of pre-filtering, life Water system living and circulating heating system.

Background technology

In current water system, such as in city tap-water water supply, municipal water supply water supply line enters skyscraper In object (such as residential quarter, Gongjian), when having high-rise secondary water-supply equipment, before supply equipment by existing specification be equipped with valve, The components such as water meter, the visual y-type filter of pre-filtering, backflow preventer, rear water-storing tank into water tank frequency-changing water supply device or The visual Y types filtering of pre-filtering in the pot with no negative pressure of non-negative pressure water-supply installation, or such as heating circulation system on water return pipeline Device enters water circulating pump because strainer is broken, and heating system is caused to damage.There are the following problems for existing y-type filter.

1, because aperture of filter screen is excessive, sand grain etc. enters deposition in boiler or other air-conditioning main equipments, and result in blockage damage Bad main equipment.The starting stage especially is run in equipment, pipeline Nei Changyin silt impurities are excessive, in cyclic process, silt impurity Excessively can gradually deposit influences equipment in main equipment uses.It is also possible to entering water circulating pump because filter screen is broken, cause Heating system damages.

2, in full-closed structure, the big impurity of particle rests on the outside of y-type filter strainer, internal screen impurity screening Stopping state is unclear, influences hydraulic pressure flow.

It needs to close front and back valve when 3, cleaning filter, system is cut off the water, and cleaning can be just dismantled after pipeline internal drainage.

Utility model content

(1) technical problem to be solved in the utility model is：The existing visual y-type filter of pre-filtering can not be intuitive Observe the case where self-filtering net filtration impurity blocks, while while cleaning, needs system to cut off the water after pipeline internal drainage to dismantle The filter is cleared up, and operation is very inconvenient, and because aperture of filter screen is excessive, and sand grain etc. enters boiler or other Deposition in air-conditioning main equipment, result in blockage damage main equipment.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides a kind of visual y-type filter of pre-filtering, including filtering The outer sheath of the filter screen of device shell, blowdown valve and cylindrical annular, the filter screen is equipped with pre-filter layer, the filter head housings Body includes interconnected liquid input section, goes out liquid section and blowdown section, the outer end of the liquid input section is equipped with inlet, it is described go out liquid section Outer end is equipped with liquid outlet, and the outer end of the blowdown section is equipped with sewage draining exit, and the sewage draining exit is connected to the blowdown valve, the feed liquor Liquid channel was formed between mouth and the liquid outlet, the filter screen is arranged in the blowdown section and crosses liquid channel one by described It is divided into two, the liquid input section goes out at least one of liquid section and the blowdown section equipped with transparent observation window.

The beneficial effects of the utility model：The visual y-type filter of pre-filtering provided by the utility model, including filter head housings The outer sheath of the filter screen of body, blowdown valve and cylindrical annular, the filter screen is equipped with pre-filter layer, and Y type strainer valves side is whole Or part material is tempered glass transparent material, the case where capable of can be visually seen y-type filter Inner filter net and impurity and cycle regimen Condition and water after filter stream situation.The bottom of Y type strainer valves is sewage draining valve, can open direct emission or closing.At the beginning of recirculated water Begin service stage, because impurity is more in pipeline, precision pre-filtering is carried out by pre-filter layer, when filter core impurity is in saturation filtering shape State substitutes pre-filter layer, until extraction PP cotton filter element carries out individually security personnel's filtering by strainer after water quality is relatively pure in pipeline, leads to Crossing setting pre-filter layer can be effectively prevented because because aperture of filter screen is excessive, sand grain etc. enters boiler or other air-conditioning masters set Standby interior deposition, the damage main equipment that results in blockage can be improved the safety in utilization of filter, reduce cost.

Further, the pre-filter layer is PP cotton layers, and the thickness of the PP cottons layer is 10-20mm.

Further, the filter screen is made of steel wire, and the steel wire is equipped with multiple filter hole, the filter hole Diameter be less than or equal to 0.3mm.

Further, the observation window is arranged in the blowdown section；The observation window is made of transparent tempered glass.

Further, the visual y-type filter of the pre-filtering further includes bypass pipe, triple valve, switch valve,

One end of the bypass pipe is connected to the liquid input section, the other end with it is described go out liquid section be connected to；The triple valve is set It sets on the liquid input section for liquid input section and bypass pipe, or conducting liquid input section and blowdown section to be connected；

Switch valve setting it is described go out liquid section on, and between the bypass pipe and the liquid outlet, for leading Go out liquid section described in logical or closure

Further, the liquid input section is divided into the first branch and the second branch by the triple valve, the first branch with The inlet connection, the second branch are connected to the blowdown section；

The triple valve includes shell and the spool column in the shell, and the to be interconnected is formed in the shell One access, alternate path and third path, first access are connected to the first branch, the alternate path and the side Siphunculus is connected to, and the third path is connected to the second branch, and the spool column is for blocking alternate path or third path.

Further, the first connecting flange, first connecting flange are equipped at the inlet and the liquid outlet It is equipped with multiple first through hole；

The second connecting flange is equipped at the leakage fluid dram, second connecting flange is equipped with the second through-hole, the blowdown Valve is equipped with the third connecting flange coordinated with the second connecting flange, and the third connecting flange is equipped with and second through-hole Corresponding third through-hole, bolt pass through the second through-hole and third through-hole to be screwed with nut and the blowdown valve are fixed on the blowdown At mouthful.

Further, the visual y-type filter of the pre-filtering further includes protection cap, and the protection cap is covered in the observation The outside of window, and one end of the protection cap is hinged with the filter housings, the other end passes through bolt and the filter head housings Body is detachably connected.

The utility model additionally provides a kind of domestic water supplying system, including is sequentially communicated and is discharged in the first water inlet end and first The first water inlet gate valve, rotor water gauge, the visual y-type filter of pre-filtering, backflow preventer between end and the first water outlet gate valve, First water inlet end is connected to the water inlet end of the first water inlet gate valve, and first water outlet is discharged gate valve with described first Water outlet connection, the visual y-type filter of pre-filtering be the visual y-type filter of pre-filtering described in any one of the above embodiments.

The utility model additionally provides a kind of circulating heating system, including is sequentially communicated and is discharged in the second water inlet end and second Second water inlet gate valve, the visual y-type filter of pre-filtering, water pump, check-valves and the second water outlet gate valve at end, second water inlet end It being connected to the water inlet end of the second water inlet gate valve, second water outlet is connected to the water outlet of the second water outlet gate valve, The visual y-type filter of pre-filtering is the visual y-type filter of pre-filtering described in any one of the above embodiments.

Description of the drawings

The advantages of the utility model is above-mentioned and/or additional aspect is from combining in description of the following accompanying drawings to embodiment and will become Obviously and it is readily appreciated that, wherein：

Fig. 1 is front view when the visual y-type filter of pre-filtering provided by the utility model works normally；

Fig. 2 is vertical view when the visual y-type filter of pre-filtering provided by the utility model works normally；

Fig. 3 is left view when the visual y-type filter of pre-filtering provided by the utility model works normally；

Fig. 4 is the front view under the visual y-type filter backwashing state of pre-filtering provided by the utility model；

Fig. 5 is the vertical view under the visual y-type filter backwashing state of pre-filtering provided by the utility model

Fig. 6 is the left view under the visual y-type filter backwashing state of pre-filtering provided by the utility model

Fig. 7 is the sectional view of filter screen；

Fig. 8 is that the structure of the triple valve under the visual y-type filter backwashing state of pre-filtering provided by the utility model is shown It is intended to；

Fig. 9 is that the threeway valve arrangement under the visual y-type filter normal operating conditions of pre-filtering provided by the utility model shows It is intended to；

Figure 10 is the structural schematic diagram of domestic water supplying system；

Figure 11 is the structural schematic diagram of circulating heating system；

Figure 12 is the structural schematic diagram of the protection cap.

The direction for the water flowing that the direction of arrow indicates in figure.

Correspondence in wherein Fig. 1 to Figure 12 between reference numeral and component names is：

1, the visual y-type filter of pre-filtering, 11, filter housings, 111, liquid input section, 112, go out liquid section, 113, blowdown section, 1131, observation window, 1132, filter screen, 1133, pre-filter layer, 1134, protection cap, 1135, bolt, 114, inlet, 115, go out Liquid mouth, 12, bypass pipe, 13, triple valve, 131, shell, 132, spool column, the 133, first access, 134, alternate path, 135, Three-way, 14, switch valve, 15, blowdown valve, the 16, first connecting flange, the 17, second connecting flange, 18, third connecting flange, 2, Domestic water supplying system, the 21, first water inlet gate valve, 22, rotor water gauge, 23, backflow preventer, the 24, first water outlet gate valve, 25, First water inlet end, the 26, first water outlet, 3, circulating heating system, the 31, second water inlet end, the 32, second water outlet, 33, non-return Valve, the 34, water pump, 35, second water inlet gate valve, the 36, second water outlet gate valve.

Specific implementation mode

In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

As shown in Figures 1 to 9, the utility model provides a kind of visual y-type filter 1 of pre-filtering, including filter head housings The outer sheath of the filter screen 1132 of body 11, blowdown valve 15 and cylindrical annular, the filter screen 1132 is equipped with pre-filter layer 1133, The filter housings 11 include the liquid input section 111 being interconnected, go out liquid section 112 and blowdown section 113, the liquid input section 111 Outer end is equipped with inlet 114, it is described go out liquid section 112 outer end be equipped with liquid outlet 115, the outer end of the blowdown section 113 is equipped with row Dirty mouth, the sewage draining exit are connected to the blowdown valve 15, and it is logical that liquid was formed between the inlet 114 and the liquid outlet 115 Road, the setting of the filter screen 1132 are divided into two in the blowdown section 113 and by the liquid channel of crossing, the liquid input section 111, Go out at least one of liquid section 112 and the blowdown section 113 and is equipped with transparent observation window 1131.

The visual y-type filter 1 of pre-filtering provided by the utility model, including filter housings 11, blowdown valve 15 and cylinder The outer sheath of the filter screen 1132 of annular, the filter screen 1132 is equipped with pre-filter layer 1133, Y type strainer valves side whole or portion Point material is tempered glass transparent material, the case where y-type filter Inner filter net and impurity can be can be visually seen and recirculated water situation and Water after filter stream situation.The bottom of Y type strainer valves is blowdown valve 15, can open direct emission or closing.It is initial in recirculated water Service stage carries out precision pre-filtering because impurity is more in pipeline by pre-filter layer 1133, when filter core impurity is in saturation filtering shape State substitutes pre-filter layer 1133, until extraction PP cotton filter element was individually ensured public security by strainer progress after water quality is relatively pure in pipeline Filter can be effectively prevented by the way that pre-filter layer 1133 is arranged because because aperture of filter screen is excessive, sand grain etc. enter boiler or its Deposition in its air-conditioning main equipment, the damage main equipment that results in blockage can be improved the safety in utilization of filter, reduce cost.

Preferably, as shown in figure 12, the pre-filter layer 1133 is PP cotton layers, and the thickness of the PP cottons layer is 10-20mm, It is to first pass through the filtering of PP cottons that flow enters 113 filtering net 1132 of blowdown section by liquid input section 111 when in use in this way, by flow In contaminant filter fall, then large particle is filtered by filter screen 1132, can preferably be avoided at the beginning of equipment When beginning to run, impurity is avoided to enter in equipment；Such as under normal conditions when heating system just enables, impurity is more in pipe, first Precision pre-filtering is first carried out by PP cotton filter element (i.e. pre-filter layer 1133), etc. in circulatory systems pipeline, after basic filtering is clean, pumping Fall PP cotton filter element, is filtered by the filter screen 1132 in filter, when filter screen 1132 is filtered because of the circulatory system The reasons such as moisturizing enter system containing a small amount of impurity, it is also necessary to be filtered, when filtering saturation needs to clean in emissions filter When impurity, only need to open Y type strainer valves bottom valve can direct blowdown.

Need to illustrate when the application in the visual y-type filter of pre-filtering 1 be mainly used in circulating water supply system, such as follow Ring heating system etc., because impurity is more in pipeline, by PP cotton filter element, carries out precision pre-filtering in recirculated water initial service stage, when Filter core impurity be in saturation filtration condition, substitute PP cotton filter element, until pipeline in water quality it is relatively pure after extraction PP cotton filter element by Strainer carries out individually security personnel's filtering.

In addition, the pre-filter layer 1133 is not limited solely to above-mentioned PP cotton materials in this application, can also be other Made of material, if can realize in the application by pre-filter layer 1133 the recirculated water starting stage accurate filtering work( Can, employment can realize the design philosophy of the utility model, should belong to the scope of protection of the utility model.

As shown in Figures 1 to 9, the visual y-type filter of the pre-filtering 1 further includes bypass pipe 12, triple valve 13, switch valve 14, one end of the bypass pipe 12 is connected to the liquid input section 111, the other end with it is described go out liquid section 112 be connected to；The triple valve 13 are arranged on the liquid input section 111 for liquid input section 111 and bypass pipe 12, or conducting liquid input section 111 and blowdown section to be connected 113；The setting of the switch valve 14 it is described go out liquid section 112 on, and between the bypass pipe 12 and the liquid outlet 115, For be connected or be closed it is described go out liquid section go out liquid section 112

The visual y-type filter 1 of the pre-filtering in this way, including filter housings 11, blowdown valve 15, bypass pipe 12, triple valve 13, the filter screen 1132 of switch valve 14 and cylindrical annular, since setting is saturating in whole or in part on the filter housings 11 Bright observation window 1131, therefore the filter screen 1132 inside filter housings 11 can be directly observed through observation window 1131, because This can intuitively observe the stopping state of 1132 impurity screening of filter screen, and in normal work, liquid input section is connected in triple valve 13 111 and blowdown section 113, at this time bypass pipe 12 close, switch valve 14 opens out liquid section 112, then flow enters from inlet 114 It by the filter screen 1132 of blowdown section 113, then first passes through pre-filter layer 1133 and is filtered, then passing through filter screen 1132 Filtering realizes the filtering for flow by being discharged by the liquid outlet 115 for going out liquid section 112 after the filtering of filter screen 1132； When needing to clean strainer, the bypass pipe 12 of liquid input section 111 is connected in triple valve 13, blocks the liquid input section 111 and row The connection of dirty section 113, Simultaneous Switching valve 14 block it is described go out liquid section 112, the flow entered at this time from liquid input section 111 enters bypass Pipe 12, flow enter liquid section 112 subsequently into blowdown section 113 by bypass pipe 12, and flow is to the mistake in blowdown section 113 at this time Strainer 1132 is cleared up, and is realized and is carried out inverse flushing, and whole or portion on the filter housings 11 to filter screen 1132 Set up separately and set transparent observation window 1131, the backwash situation of pre-filtering visual y-type filter Inner filter net and impurity can be can be visually seen； Quickly filter screen 1132 can be cleared up, not interfere with the hydraulic pressure by the visual y-type filter of pre-filtering 1, flow；Separately Outside due to being connected with blowdown valve 15 at the sewage draining exit, when cleaning filter, it is not necessary to close front and back valve and dismantle institute State the visual y-type filter of pre-filtering 1, it is only necessary to open the blowdown valve 15 and can be completed, it is simple to operate, filter it is clear It washes more efficient.

As shown in Figures 1 to 6, the observation window 1131 is arranged in the blowdown section 113, due to the filter screen 1132 It is provided in the blowdown section 113, therefore observation window 1131 is set in the blowdown section 113 and can more intuitively be seen Whether the filter screen 1132 is blocked, and the severity blocked, can timely judge the visual Y types filtering of pre-filtering Whether device 1 is cleaned, it is ensured that is met the requirements by the hydraulic pressure and flow of the visual y-type filter of pre-filtering 1.

Certainly, the observation window 1131 can also be provided on liquid input section 111 and/or water exit end 112 in this application, Or entirely the outer wall of the filter housings 11 is all transparent, can equally realize that the purpose of the application, objective do not take off Design philosophy from the utility model should belong to the scope of protection of the utility model；Certainly, it is only set in the blowdown section 113 The purpose that observation filter screen 1132 blocks can either be realized by setting observation window 1131, and can ensure the visual Y types mistake of entire pre-filtering The intensity of filter 11.Preferably, the observation window 1131 is made of transparent tempered glass, and certainly, the observation window 1131 is simultaneously Above-mentioned material is not limited only to be manufactured, if can realize it is transparent have certain structural strength, can also realize The purpose of the application.

As shown in Figures 1 to 6, the first connecting flange 16, institute are equipped at the inlet 114 and the liquid outlet 115 It states the first connecting flange 16 and is equipped with multiple first through hole, the inlet 114 and liquid outlet 115 pass through the first connecting flange First through hole on 16 is attached by bolt with front-end devices back end device.

As shown in Figures 1 to 6, it is equipped with the second connecting flange 17 at the leakage fluid dram, is set on second connecting flange 17 There are the second through-hole, the blowdown valve 15 to be equipped with the third connecting flange 18 coordinated with the second connecting flange 17, the third connects Acting flange 18 is equipped with third through-hole corresponding with second through-hole, and bolt passes through the second through-hole and third through-hole to be revolved with nut The blowdown valve 15 is fixed at the sewage draining exit by conjunction.

As shown in Figures 1 to 6, the filter screen 1132 is made of steel wire, and the steel wire is equipped with multiple filter hole, The diameter of the filter hole is less than or equal to 0.3mm, and the visual y-type filter strainer of traditional pre-filtering is iron plate perforating by punching Porous plate, water resistance is big, and aperture is big, and >=3mm sand grains etc. can largely pass through with flow, and filter screen 1132 provided by the present application is using thin Close steel wire is made, and specifically by the columned filter screen 1132 in fine and closely woven steel wire besieged city, and 1132 inside of filter screen is hollow Structure, due to making filter screen 1132 using fine and closely woven steel wire, the aperture of the filter hole on filter screen 1132 can pass through Different steel wires is selected to be adjusted, general filter diameter is not more than 0.3mm, and water resistance becomes smaller significantly, is provided simultaneously with recoil Function is washed, ensures that overcurrent is unobstructed；It should be noted that the diameter of the filter hole is not limited to be less than or equal in this application 0.3mm, size can be selected in different steel wires, design of the objective without departing from the utility model according to specific demand Thought should belong to the scope of protection of the utility model.

As shown in fig. 7, the visual bidirectional y-type filter 1 further includes protection cap 1134, the protection cap 1134 is covered in The outside of the observation window 1131, and one end of the protection cap 1134 and the filter housings 11 are hinged, the other end and institute Filter housings 11 are stated to be detachably connected.Preferably, as shown in fig. 7, the other end of the protection cap 1134 passes through bolt 1135 It is linked with the filter housings 11.The protection cap 1134 mainly protects observation window 1131, and (observation window 1131 is by tempering glass Glass is made) from unexpectedly destroying shock etc., in use, usually protection cap 1134 is covered with, and is protected when needing to check to open Protecting cover 1134, wherein the other end of protection cap 1134 is kept away by bolt 1135 and the outer of filter housings 11 when usually using Exempt to be connected, when needing to observe the stopping state of 1 self-filtering net 1132 of visual bidirectional y-type filter, bolt can be backed out 1135, then make hinge joint rotation of the protection cap 1134 between filter housings 11, opens the protection cap 1134, at this time The stopping state of filter interior filter screen 1132 can easily be observed；Preferably, the protection cap is rigidity material It is manufactured, can be in the case where protection cap be knocked, also it can preferably protect observation window 1131 without damage.

Wherein the triple valve 13 can also be electric T-shaped valve 13 with manual three-way valve 13 in this application, described Switch valve 14 is also either can also be manually Electronic control；Preferably, the triple valve 13 is by the liquid input section 111 It is divided into the first branch and the second branch, the first branch is connected to the inlet 114, the second branch and the blowdown Section 113 is connected to；

As shown in Figure 8 and Figure 9, the triple valve 13 includes shell 131 and the spool column 132 in the shell 131, Interconnected the first access 133, alternate path 134 and third path 135, first access are formed in the shell 131 133 are connected to the first branch, and the alternate path 134 is connected to the bypass pipe 12, the third path 135 with it is described The second branch is connected to, and the spool column 132 is for blocking alternate path 134 or third path 135.

Certainly, the structure of the triple valve 13 can not also be limited to above structure in this application, such as the triple valve 13 For globe T valve 13, it can equally realize that the purpose of the application, objective are answered without departing from the design philosophy of the utility model Belong to the scope of protection of the utility model day.

1 to 9 illustrates the operation principle of the visual y-type filter of pre-filtering provided by the utility model 1 below in conjunction with the accompanying drawings：

As shown in Fig. 1 to Fig. 3 and Fig. 9, when filter works normally, the first access 133 and third of triple valve 13 Access 135 is connected to, and spool column 132 closes alternate path 134, and then the first branch and branch is connected, at this time the feed liquor of filter Section 111 be connected to blowdown section 113, the filter screen 1132 out of the entrance of liquid input section 111 blowdown section 113, in this way water when in use It is to first pass through the filtering of PP cottons that stream enters 113 filtering net 1132 of blowdown section by liquid input section 111, by the contaminant filter in flow Fall, then large particle is filtered by filter screen 1132, flow passes through 1132 mistake of pre-filter layer 1133 and filter screen Enter liquid section 112 after filter, the switch valve 14 for going out liquid section 112 is opened, and then flow is by going out 115 row of liquid outlet of liquid section 112 Go out；

As shown in fig. 4 to fig. 6 and Fig. 8, when needing to clean filter screen 1132, the first of the triple valve 13 is logical Road 133 is connected to alternate path 134, and spool column 132 closes third path 135, and it is right to enter the first branch from inlet 114 at this time Entered in bypass pipe 12 with being connected to for alternate path 134 by the first access 133 afterwards, then enters liquid section by bypass pipe 12 In 112, since switch valve 14 is closed at this time, flow is returned in blowdown section 113 out of liquid input section 111 to filtering Net 1132 is rinsed, and realizes backwash；Then impurity is discharged by blowdown valve 15, completes the cleaning row of filter screen 1132 It is dirty.Wherein the initial position of spool column 132 closes alternate path 134 when being located at initial position positioned at downside, spool column 132 It closes, when backwash, spool column 132 above carries, and blocks and normally crosses flowing flux, and flow self counter flushing water channel passes through.

As shown in Figure 10, the utility model additionally provides a kind of domestic water supplying system 2, including is sequentially communicated in the first water inlet The first water inlet gate valve 21 between end 25 and the first water outlet 26, rotor water gauge 22, visual bidirectional type filter 1, refluence are anti- Only device 23 and first is discharged gate valve 24, and first water inlet end 25 is connected to the water inlet end of the first water inlet gate valve 21, described First water outlet 26 is connected to the water outlet of the first water outlet gate valve 24, and the visual y-type filter 1 of pre-filtering is above-mentioned The visual y-type filter of pre-filtering described in one embodiment 1.

As shown in figure 11, the utility model additionally provides a kind of circulating heating system 3, including is sequentially communicated in the second water inlet Second water inlet gate valve 35, the visual y-type filter 1 of pre-filtering, water pump 34, the check-valves 33 and second at end 31 and the second water outlet 32 It is discharged gate valve 36, second water inlet end 31 is connected to the water inlet end of the second water inlet gate valve 26, second water outlet 32 It is connected to the water outlet of the second water outlet gate valve 36, the visual y-type filter 1 of pre-filtering is described in any one of the above embodiments pre- Filter visual y-type filter 1.

Due to domestic water supplying system 2 provided by the utility model and circulating heating system, the visual Y types mistake of pre-filtering of use Filter 1 is equipped with observation window 1131 and drain valve, therefore can intuitively observe whether the visual y-type filter of pre-filtering 1 blocks up Plug, and also quickly and easily row filter can be cleaned, therefore can ensure the steady of entire domestic water supplying system 2 It is fixed.

It should be noted that provided by the utility model can also be used in other depending on the visual y-type filter of two-way pre-filtering In circulating water supply system, such as industrial water filtering, as long as being filtered using the two-way pre-filtering visual Y types provided by the utility model that regard Device, which is obtained employment, belongs to the design philosophy of the utility model, should belong to the scope of protection of the utility model.

In conclusion the visual y-type filter of pre-filtering provided by the utility model, including filter housings, blowdown valve and The outer sheath of the filter screen of cylindrical annular, the filter screen is equipped with pre-filter layer, and Y type strainer valves side all or part material is Tempered glass transparent material, the case where y-type filter Inner filter net and impurity can be can be visually seen and recirculated water situation and water after filter stream Situation.The bottom of Y type strainer valves is sewage draining valve, can open direct emission or closing.In recirculated water initial service stage, because Impurity is more in pipeline, and precision pre-filtering is carried out by pre-filter layer, is saturated filtration condition when filter core impurity is in, substitutes pre-filtering Layer, until extraction PP cotton filter element carries out individually security personnel's filtering by strainer after water quality is relatively pure in pipeline, by the way that pre-filtering is arranged Layer can be effectively prevented because because aperture of filter screen is excessive, sand grain etc. enters deposition in boiler or other air-conditioning main equipments, makes At the safety in utilization damaged main equipment and filter can be improved is blocked, cost is reduced.

In the description of the present invention, it should be noted that term "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching State the utility model and simplify and describe, do not indicate or imply the indicated device or element must have a particular orientation, with Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " It is used for description purposes only, is not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains Justice is two or more.

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Apply example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work, all Belong to the range of the utility model protection.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (10)

1. a kind of visual y-type filter of pre-filtering, it is characterised in that：Include the mistake of filter housings, blowdown valve and cylindrical annular Strainer, the outer sheath of the filter screen are equipped with pre-filter layer, and the filter housings include interconnected liquid input section, go out liquid section With blowdown section, the outer end of the liquid input section is equipped with inlet, it is described go out liquid section outer end be equipped with liquid outlet, the blowdown section it is outer End is equipped with sewage draining exit, and the sewage draining exit is connected to the blowdown valve, and it is logical that liquid was formed between the inlet and the liquid outlet Road, the filter screen are arranged in the blowdown section and the liquid channel of crossing are divided into two, and the liquid input section goes out liquid section and institute It states at least one of blowdown section and is equipped with transparent observation window.

2. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The pre-filter layer is PP cotton layers, The thickness of the PP cottons layer is 10-20mm.

3. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The filter screen is by steel wire system At the steel wire is equipped with multiple filter hole, and the diameter of the filter hole is less than or equal to 0.3mm.

4. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The observation window is arranged described In blowdown section；The observation window is made of transparent tempered glass.

5. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The visual Y types filtering of pre-filtering Device further includes bypass pipe, triple valve, switch valve,

One end of the bypass pipe is connected to the liquid input section, the other end with it is described go out liquid section be connected to；The triple valve setting exists For liquid input section and bypass pipe, or conducting liquid input section and blowdown section to be connected on the liquid input section；

Switch valve setting it is described go out liquid section on, and positioned at the bypass pipe and the liquid outlet between, for conducting or Go out liquid section described in closure.

6. the visual y-type filter of pre-filtering according to claim 5, it is characterised in that：The triple valve is by the feed liquor Section is divided into the first branch and the second branch, and the first branch is connected to the inlet, the second branch and the blowdown Duan Liantong；

The triple valve includes shell and the spool column in the shell, and it is logical that first to be interconnected is formed in the shell Road, alternate path and third path, first access are connected to the first branch, the alternate path and the bypass pipe Connection, the third path are connected to the second branch, and the spool column is for blocking alternate path or third path.

7. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The inlet and it is described go out liquid The first connecting flange is equipped at mouthful, first connecting flange is equipped with multiple first through hole；

The second connecting flange is equipped at the leakage fluid dram, second connecting flange is equipped with the second through-hole, on the blowdown valve Equipped with the third connecting flange coordinated with the second connecting flange, the third connecting flange is equipped with corresponding with second through-hole Third through-hole, bolt passes through the second through-hole and third through-hole to be screwed with nut and the blowdown valve is fixed on the sewage draining exit Place.

8. the visual y-type filter of pre-filtering according to claim 1, it is characterised in that：The visual Y types filtering of pre-filtering Device further includes protection cap, and the protection cap is covered in the outside of the observation window, and one end of the protection cap and the filtering Device housing hinge, the other end are detachably connected by bolt and the filter housings.

9. a kind of domestic water supplying system, it is characterised in that：Including being sequentially communicated between the first water inlet end and the first water outlet First water inlet gate valve, rotor water gauge, the visual y-type filter of pre-filtering, backflow preventer and the first water outlet gate valve, described first Water inlet end is connected to the water inlet end of the first water inlet gate valve, the water outlet that first water outlet is discharged gate valve with described first Connection, the visual y-type filter of pre-filtering are such as the visual y-type filter of claim 1 to 8 any one of them pre-filtering.

10. a kind of circulating heating system, it is characterised in that：Including being sequentially communicated second in the second water inlet end and the second water outlet It intakes gate valve, the visual y-type filter of pre-filtering, water pump, check-valves and the second water outlet gate valve, second water inlet end and described the The water inlet end connection of two water inlet gate valves, second water outlet are connected to the water outlet of the second water outlet gate valve, the pre- mistake It is such as the visual y-type filter of claim 1 to 8 any one of them pre-filtering to filter visual y-type filter.