Water filtering device for heating system

Abstract

The utility model discloses a water filtering device for a heating system, which relates to the technical field of filtering devices, and comprises a lower shell, an upper shell and a filter screen cylinder, a pressure stabilizing mechanism is arranged in the upper shell, a protection mechanism is arranged in the lower shell, a water inlet is arranged on the side surface of the lower shell, a water outlet is arranged on the side surface of the upper shell, and a slag discharge port is arranged at the bottom of the lower shell. The upper shell is installed on the upper end face of the lower shell, a filtering chamber is formed between the upper shell and the lower shell, the pressure stabilizing mechanism comprises a piston plate and a compression spring, a piston cavity is formed in the upper shell, and the piston plate is installed in the piston cavity and elastically connected with the upper shell through the compression spring. The utility model has the advantages of pressure stabilizing function and self-cleaning function, and solves the problems that the water hammer effect is often accompanied in the starting or running process of the heating system, the system pressure fluctuates, the filter device and other equipment are easily damaged, the traditional filter device needs to manually clean the filter screen at regular time, the maintenance burden of a user is increased, and the maintenance cost is reduced. And the filter screen is easy to damage due to direct impact.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field, concretely is a water filter device for heating system. BACKGROUND

[0002] The heating system is an indispensable part in modern buildings, especially in cold regions. Its main function is to provide indoor heating through circulating hot water or steam. However, water quality problems in the heating system have always been one of the important factors affecting its performance and service life. Impurities in water such as silt, rust, calcium and magnesium ions, etc. not only block the pipeline, but also accelerate the corrosion of equipment, reduce the heat exchange efficiency, increase the energy consumption, and even cause system failure, therefore, it is necessary to use a filter device to protect the heating equipment.

[0003] Traditional filter devices usually use a single filter screen, and the impurities in the water flow directly impact the filter screen, which can easily damage the filter screen and shorten its service life. During the startup or operation of the heating system, water hammer effect often occurs, which causes system pressure fluctuation, easily damages the filter device and other equipment, and affects the stability and safety of the system. The traditional filter device needs to be manually cleaned frequently, which increases the user's maintenance burden. Therefore, a water filter device for heating system is needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a water filter device for heating system, which has the advantages of pressure stabilizing function and self-cleaning, solves the problems of water hammer effect during the startup or operation of the heating system, system pressure fluctuation, easy damage to the filter device and other equipment, and the filter screen directly impacted and easily damaged.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a water filter device for heating system, comprising a lower shell, an upper shell and a filter screen cylinder, the upper shell is provided with a pressure stabilizing mechanism, the lower shell is provided with a protection mechanism;

[0006] The side of the lower shell is provided with a water inlet, the side of the upper shell is provided with a water outlet, the bottom of the lower shell is provided with a residue discharge port, the upper shell is installed on the upper end face of the lower shell, a filter chamber is formed between the upper shell and the lower shell, the pressure stabilizing mechanism comprises a piston plate and a compression spring, a piston cavity is arranged in the upper shell, the piston plate is installed in the piston cavity and is elastically connected with the upper shell through the compression spring, a vent hole is arranged at the top of the piston cavity, the protection mechanism comprises a first reflecting plate and a second reflecting plate, the first reflecting plate is installed at the bottom of the upper shell, the filter screen cylinder is installed in the first reflecting plate, and the second reflecting plate is fixedly installed on the bottom upper end face of the lower shell.

[0007] As a kind of heating system water filter device preferred of the utility model, first reflecting plate is cylindrical structure, first reflecting plate is installed in upper shell and is rotationally connected, water outlet and the bottom of first reflecting plate are penetrated.

[0008] As a kind of heating system water filter device preferred of the utility model, the side wall outer end face of first reflecting plate is uniformly provided with arc blade, the center height of arc blade is equal to the center height of water inlet.

[0009] As a kind of heating system water filter device preferred of the utility model, second reflecting plate is the circular arc structure that is convex upwards, second reflecting plate is located at the upper end of residue discharge port, the edge of second reflecting plate is uniformly provided with backflow hole.

[0010] As a kind of heating system water filter device preferred of the utility model, the bottom of piston plate is provided with impact ball, stretch spring is arranged between piston plate and impact ball, the bottom of impact ball is attached to the top of filter screen cylinder.

[0011] As a kind of heating system water filter device preferred of the utility model, filter screen cylinder is circular truncated cone structure, the side of filter screen cylinder is provided with filter hole, the top of filter screen cylinder is provided with bearing convex.

[0012] As a kind of heating system water filter device preferred of the utility model, the inner wall of lower shell is provided with first heat insulation cavity, the inner wall of upper shell is provided with second heat insulation cavity.

[0013] Compared with prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a water filter device for a heating system, which comprises an upper shell, a lower shell, a filter screen cylinder, a piston plate, a first reflecting plate, a second reflecting plate, a water inlet, a water outlet, a residue discharge port, a compression spring and a stretch spring.

[0015] 2、The utility model discloses a protection mechanism is arranged in the lower shell, and the first reflection board's design can not only effectively block the impurity in water flow and directly impact the filter screen cylinder, reduces the abrasion of filter screen cylinder because of direct force, and through its unique cylindrical structure and the water inlet corresponding, utilizes the kinetic energy of water flow and realizes autorotation, and this autorotation not only helps the even distribution water flow and reduces the risk of local excessive abrasion to the pressure of filter screen cylinder, can also promote the impurity in water flow and settle down to the bottom of lower shell under the action of centrifugal force more quickly, thereby alleviate the filtration burden of filter screen cylinder, improve the filtration effect, prolong the overall service life of equipment.

[0016] 3、The utility model discloses a piston plate lower side sets up the ball of impact can impact filter screen cylinder when piston plate resets, and gives filter device a kind of automatic cleaning ability, in the initial stage of system starting or the case of pressure fluctuation bigger, the piston plate of pressure stabilizing mechanism will move up and down under the action of compression spring, when piston plate resets, the ball of impact will be quickly impacted filter screen cylinder under the action of inertia and down, produce slight vibration, and this vibration is enough to shake off the impurity adhered on the surface of filter screen cylinder, thereby restore the permeability of filter screen cylinder, maintain its efficient filtration performance.This design greatly reduces the necessity of artificial periodic cleaning filter screen cylinder, not only saves maintenance time and cost, also ensures the continuous stable operation state of system, improves user satisfaction and the reliability of system. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is cross-sectional structure schematic view of the utility model;

[0018] Figure 2 It is overall structure schematic view of the utility model;

[0019] Figure 3 It is plan view of the utility model;

[0020] Figure 4 It is the Figure 3 A-A cross-sectional view of the utility model;

[0021] Figure 5 It is the Figure 4 B place enlarged view of the utility model.

[0022] In the figure: 1, the lower shell; 101, the water inlet; 102, the residue outlet; 103, the filter chamber; 104, the first heat insulation cavity; 2, the upper shell; 201, the water outlet; 202, the air vent; 203, the piston cavity; 204, the second heat insulation cavity; 205, the limiting flange; 3, the filter screen cylinder; 301, the bearing protrusion; 4, the pressure stabilizing mechanism; 401, the piston plate; 402, the compression spring; 403, the impact ball; 404, the tension spring; 5, the protection mechanism; 501, the first reflecting plate; 5011, the arc-shaped blade; 502, the second reflecting plate; 5021, the backflow hole. DETAILED DESCRIPTION

[0023] Please refer to Figures 1-5 A water filtering device for heating system, comprising a lower shell 1, an upper shell 2 and a filter screen cylinder 3, the upper shell 2 is provided with a pressure stabilizing mechanism 4, the lower shell 1 is provided with a protection mechanism 5;

[0024] The side of the lower shell 1 is provided with a water inlet 101, the side of the upper shell 2 is provided with a water outlet 201, the bottom of the lower shell 1 is provided with a residue outlet 102, the upper shell 2 is installed on the upper end face of the lower shell 1, the filter chamber 103 is formed between the upper shell 2 and the lower shell 1, the pressure stabilizing mechanism 4 comprises a piston plate 401 and a compression spring 402, the upper shell 2 is provided with a piston cavity 203, the piston plate 401 is installed in the piston cavity 203 and is elastically connected with the upper shell 2 through the compression spring 402, the bottom inner end face of the piston cavity 203 is provided with a limiting flange 205, the top of the piston cavity 203 is provided with an air vent 202, the protection mechanism 5 comprises a first reflecting plate 501 and a second reflecting plate 502, the first reflecting plate 501 is installed on the bottom of the upper shell 2, the filter screen cylinder 3 is installed in the first reflecting plate 501, and the second reflecting plate 502 is fixedly installed on the bottom upper end face of the lower shell 1.

[0025] Further, the first reflecting plate 501 is in a cylindrical structure, the first reflecting plate 501 is installed in the upper shell 2 and is rotationally connected therewith, and the water outlet 201 penetrates through the bottom of the first reflecting plate 501.

[0026] The first reflecting plate 501 shields the filter screen cylinder 3, so that the water flow carrying impurities directly impacts the filter screen cylinder 3 is avoided, the filter screen cylinder 3 is prevented from being damaged, and the impurities in the water sink to the bottom of the lower shell 1 under the action of gravity after impacting the first reflecting plate 501.

[0027] Further, the outer end faces of the side walls of the first reflecting plate 501 are uniformly provided with arc-shaped blades 5011, the central height of the arc-shaped blades 5011 is equal to the central height of the water inlet 101.

[0028] The water flow of the water inlet 101 impacts the arc-shaped blade 5011, thereby driving the first reflecting plate 501 to rotate, on the one hand, the first reflecting plate 501 is uniformly stressed, avoiding that the end close to the water inlet 101 is prematurely broken by impurities in the water, on the other hand, the water flow forms a vortex, thereby separating the impurities in the water under the centrifugal force, and driving the filter screen cylinder 3 to rotate, making the wear more uniform.

[0029] Further, the second reflecting plate 502 is a circular arc structure protruding upward, the second reflecting plate 502 is located at the upper end of the residue discharge port 102, and the edges of the second reflecting plate 502 are uniformly provided with backflow holes 5021.

[0030] By shielding the residue discharge port 102 with the second reflecting plate 502, the impurities accumulated at the residue discharge port 102 are prevented from being washed to the filter screen cylinder 3 again by the water flow, thereby reducing the filtering pressure of the filter screen cylinder 3.

[0031] Further, the bottom of the piston plate 401 is provided with a striking ball 403, a tension spring 404 is arranged between the piston plate 401 and the striking ball 403, and the bottom of the striking ball 403 is attached to the top of the filter screen cylinder 3.

[0032] When the heating device is started, a water hammer effect is generated, the pressure in the filter chamber 103 is instantaneously increased, thereby causing the piston plate 401 to press and compress the compression spring 402 to slide upward, when the piston plate 401 is reset, the striking ball 403 strikes the filter screen cylinder 3 under the action of inertia, thereby causing the impurities attached to the surface of the filter screen cylinder 3 to fall off, and improving the permeability of the filter screen cylinder 3.

[0033] Further, the filter screen cylinder 3 is a circular truncated cone structure, the side surface of the filter screen cylinder 3 is provided with a filter hole, and the top of the filter screen cylinder 3 is provided with a bearing protrusion 301.

[0034] The circular truncated cone structure makes the impurities on the surface better fall off when the filter screen cylinder 3 is struck, and the bearing protrusion 301 structure on the top improves the local structural strength and avoids premature wear and breakage of the top.

[0035] Further, the inner wall of the lower shell 1 is provided with a first heat insulation cavity 104, and the inner wall of the upper shell 2 is provided with a second heat insulation cavity 204.

[0036] The first heat insulation cavity 104 and the second heat insulation cavity 204 improve the heat preservation performance of the device, reduce heat loss, avoid scalding of the user by the filter device, and improve the safety of the device.

[0037] Further, the inner end surface of the upper shell 2 is provided with an inner thread at the bottom, and the outer end surface of the lower shell 1 is provided with an outer thread at the top, and the upper cover and the lower shell 1 are fixed by threads.

[0038] The upper shell 2 and the lower shell 1 are connected through threads, so that the upper shell 2 can be disassembled for thorough cleaning of the interior, improving the convenience of maintenance.

[0039] When the water hammer effect occurs during the start or operation of the heating system, the sudden impact of the water flow will cause the pressure in the filter chamber 103 to rise sharply, at this time, the piston plate 401 is pushed upwards under high pressure, and the compression spring 402 is compressed, when the pressure returns to normal, the elastic force of the compression spring 402 pushes the piston plate 401 to reset, in the process of resetting the piston plate 401, the impact ball 403 continues to move downward due to inertia, and hits the top of the filter screen cylinder 3, thereby shaking off the impurities adhering to the surface of the filter screen cylinder 3, maintaining the permeability thereof, the pressure stabilizing mechanism 4 can effectively absorb and release pressure fluctuations, maintain the stability of the pressure in the filter chamber 103, reduce system vibration and noise, and the water flow of the water inlet 101 impacts the arc-shaped blades 5011 on the first reflection plate 501, causing the first reflection plate 501 to rotate. The rotation of the first reflection plate 501 not only can uniformly distribute the pressure of the water flow on the filter screen cylinder 3, reducing local wear, but also can make the impurities in the water settle to the bottom through centrifugal force, the second reflection plate 502 is fixedly installed on the upper end face of the bottom of the lower shell 1, and has a convex arc-shaped structure upward. The edges of the second reflection plate 502 are uniformly provided with backflow holes 5021 for preventing the impurities at the slag discharge port 102 from being washed again to the filter screen cylinder 3 by the water flow, the water flow enters the filter chamber 103 through the water inlet 101, is preliminarily blocked and centrifugally separated by the first reflection plate 501, and then is finely filtered by the filter screen cylinder 3. The filtered water flow flows out from the water outlet 201 and enters the heating system.

[0040] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water filtering device for heating system, comprising a lower shell (1), an upper shell (2) and a filtering screen cylinder (3), characterized in that: The upper shell (2) is provided with a pressure stabilizing mechanism (4), and the lower shell (1) is provided with a protection mechanism (5); The side of the lower shell (1) is provided with a water inlet (101), the side of the upper shell (2) is provided with a water outlet (201), the bottom of the lower shell (1) is provided with a slag discharge port (102), the upper shell (2) is installed on the upper end surface of the lower shell (1), a filter chamber (103) is formed between the upper shell (2) and the lower shell (1), the pressure stabilizing mechanism (4) comprises a piston plate (401) and a compression spring (402), the upper shell (2) is provided with a piston cavity (203), the piston plate (401) is installed in the piston cavity (203) and is elastically connected with the upper shell (2) through the compression spring (402), the top of the piston cavity (203) is provided with a blowhole (202), the protection mechanism (5) comprises a first reflecting plate (501) and a second reflecting plate (502), the first reflecting plate (501) is installed at the bottom of the upper shell (2), the filter screen cylinder (3) is installed in the first reflecting plate (501), and the second reflecting plate (502) is fixedly installed on the bottom of the lower shell (1) The upper end surface.

2. The water filter device for a heating system according to claim 1, wherein: The first reflecting plate (501) is a cylindrical structure, the first reflecting plate (501) is installed in the upper shell (2) and is rotatably connected with the upper shell (2), and the water outlet (201) penetrates the bottom of the first reflecting plate (501).

3. A water filter device for a heating system as claimed in claim 2, characterized in that: The outer end surface of the side wall of the first reflecting plate (501) is uniformly provided with an arc-shaped blade (5011), and the center height of the arc-shaped blade (5011) is equal to the center height of the water inlet (101).

4. The water filter for a heating system according to claim 1, wherein: The second reflecting plate (502) is an upwardly convex circular arc structure, the second reflecting plate (502) is located at the upper end of the slag discharge port (102), and the edges of the second reflecting plate (502) are uniformly provided with backflow holes (5021).

5. The water filter for a heating system according to claim 1, wherein: The bottom of the piston plate (401) is provided with an impact ball (403), a tension spring (404) is arranged between the piston plate (401) and the impact ball (403), and the bottom of the impact ball (403) is attached to the top of the filter screen cylinder (3).

6. The water filter for a heating system according to claim 1, wherein: The filter screen cylinder (3) is a circular truncated cone structure, the side of the filter screen cylinder (3) is provided with a filter hole, and the top of the filter screen cylinder (3) is provided with a bearing protrusion (301).

7. The water filter for a heating system according to claim 1, wherein: The inner wall of the lower shell (1) is provided with a first heat insulation cavity (104), and the inner wall of the upper shell (2) is provided with a second heat insulation cavity (204).

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