CN219783998U - Filtering device for surface water heat pump unit - Google Patents

Abstract

The utility model discloses a filtering device for a surface water heat pump unit.A filtering tank inlet is communicated with an inlet pipeline, and an electric regulating valve for controlling fluid to enter the filtering tank through the inlet is arranged on the inlet pipeline; an inlet filter screen is obliquely arranged in the inlet pipeline, and the mesh holes of the inlet filter screen are larger than those in the filter assembly in the tank; a discharge hole which forms an arc trend along the circumferential direction of the inlet pipeline is formed on the outer side of the inlet pipeline below the inlet filter screen, and an inlet filter material discharger for receiving filter materials discharged from the discharge hole is arranged on the outer side of the inlet pipeline below the inlet pipeline; and an inlet sweeper arranged above the outer side of the inlet pipeline and positioned outside the inlet filter screen and used for spraying fluid towards the outer side of the inlet filter screen so as to sweep the filtered matters on the outer side of the inlet filter screen into the discharge port. Through the filtration of layer by layer multiple department, reduce and appear concentrating the filtration and produce the risk of easily blockking up, increase filtration efficiency, reduce the influence to heat pump set copper pipe, improve the unit energy efficiency.

Description

Filtering device for surface water heat pump unit

Technical Field

The utility model belongs to the technical field of water source heat pumps, and particularly relates to a filtering device for a surface water heat pump unit.

Background

The water source heat pump is a low-grade water energy resource formed by utilizing water sources such as groundwater, rivers, lakes and geothermal energy on the shallow surface of the earth, and a large amount of suspended substances, solid particles and the like are difficult to be accumulated in the water resources, but the water source heat pump needs to ensure the cleanliness of the water source to be better utilized when in use, so that the water resources entering a heat pump unit need to be filtered.

Current filters include a filter canister having an inlet through which external fluid enters the filter canister and an outlet through which external fluid is discharged; an in-tank filter assembly for filtering fluid passing through the tank is arranged between an inlet and an outlet in the filter tank, a sewage drain pipe for discharging filtering materials in the tank is communicated with the bottom of the filter tank, and the filtering of water resources is mainly concentrated in the tank, so that the filtering load in the tank is large, the problem of blockage is easy to occur, and the problem of blockage is further solved.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to provide a filtering device for a surface water heat pump unit that reduces the risk of clogging during filtering.

The technical scheme for realizing the utility model is as follows

The filtering device for the surface water heat pump unit comprises a filtering tank with an inlet and an outlet, wherein external fluid enters the filtering tank through the inlet and is discharged from the outlet; an in-tank filter assembly used for filtering fluid passing through the tank is arranged in the filter tank between the inlet and the outlet, and a sewage pipeline used for discharging filtered materials in the tank is communicated with the bottom of the filter tank;

an inlet of the filter tank is communicated with an inlet pipeline, and an electric regulating valve for controlling fluid to enter the filter tank through the inlet is arranged on the inlet pipeline; an inlet pressure sensor for monitoring inlet fluid pressure is arranged at the inlet of the filter tank, an outlet pressure sensor for monitoring outlet fluid pressure is arranged at the outlet of the filter tank, and a differential pressure transmitter is arranged outside the filter tank and used for forming signal connection with the inlet pressure sensor and the outlet pressure sensor, an electric regulating valve is electrically connected with the differential pressure transmitter, and the electric regulating valve regulates the opening angle of the electric regulating valve according to the signal of the differential pressure transmitter;

an inlet filter screen is obliquely arranged in the inlet pipeline, and the mesh holes of the inlet filter screen are larger than those in the filter assembly in the tank;

a discharge hole which forms an arc trend along the circumferential direction of the inlet pipeline is formed on the outer side of the inlet pipeline below the inlet filter screen, and an inlet filter material discharger for receiving filter materials discharged from the discharge hole is arranged on the outer side of the inlet pipeline below the inlet pipeline;

and an inlet sweeper arranged above the outer side of the inlet pipeline and positioned outside the inlet filter screen and used for spraying fluid towards the outer side of the inlet filter screen so as to sweep the filtered matters on the outer side of the inlet filter screen into the discharge port.

In a further scheme: a gear step is formed on the inner wall of the inlet end of the inlet pipeline, the inner side of the periphery of the inlet filter screen is blocked by the gear step, and a jacking sleeve for jacking the outer side of the periphery of the inlet filter screen is arranged at the inlet end of the inlet pipeline;

the inner end of the pressing sleeve is matched with the gear step to press the inlet filter screen, and the outer end of the pressing sleeve is fixedly connected with the flange of the inlet end of the inlet pipeline through a connecting piece.

In a further scheme: the inlet filter material discharger comprises a collecting part and a discharging part, wherein the inside of the collecting part is a conical collecting cavity, one large-caliber end of the collecting cavity covers the discharge hole and is communicated with the discharge hole, and one small-caliber end of the collecting cavity is communicated with the discharging part;

the interior of the discharge portion is a discharge channel communicated with the collecting cavity, and a filtrate discharge control valve is arranged on the discharge portion so as to control filtrate in the discharge channel to be discharged.

In a further scheme: the inlet sweeper comprises a sweeping part and a sweeping pipeline, wherein the sweeping part is positioned in the inlet pipeline, the inside of the sweeping part is a fan-shaped sweeping channel, and an outlet of the sweeping channel is positioned on one side above the outer side of the inlet filter screen and is arranged towards the outer side of the inlet filter screen;

the lower end of the spraying and sweeping pipeline penetrates into the inlet pipeline to be communicated with the spraying and sweeping part, the upper end of the spraying and sweeping pipeline is detachably connected with a communicating pipeline, and a spraying and sweeping control valve is arranged on the communicating pipeline.

In a further scheme: the in-tank filter assembly comprises an upper filter screen positioned above the inside of the filter tank and a stainless steel filter cartridge positioned below the inside of the filter tank; the upper filter screen is close to the outlet of the filter tank, and the stainless steel filter cartridge is close to the inlet of the filter tank;

wherein, the mesh of upper filter screen is less than the mesh of stainless steel cartridge filter, and the mesh of stainless steel cartridge filter is less than the mesh of import filter screen.

In a further scheme: the communication pipeline is communicated with the outlet of the filter tank and is used for guiding fluid discharged from the outlet of the filter tank to enter the inlet sweeper.

By adopting the technical scheme, the filtering work concentrated in the tank is shared by adding the inlet pipeline and adding the inlet filter screen in the inlet pipeline, so that the filtering load in the tank is reduced, and the risk of blockage in the tank is reduced; and through the cooperation of the inlet spraying and sweeping device and the inlet filter material discharger, the large-particle sundries filtered by the inlet filter screen can be cleaned, and the problem of inlet pipeline blockage can be avoided; therefore, through filtering at a plurality of positions layer by layer, the risk of easy blockage caused by centralized filtering is reduced, the filtering efficiency is increased, the influence on the copper pipe of the heat pump unit is reduced, and the unit energy efficiency is improved.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is an enlarged schematic view of portion A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the inlet duct of the present utility model;

in the drawings, 10, an inlet, 11, an outlet, 12, a filter tank, 13, an electric sewage pipe, 14, a manual sewage pipe, 15, an inlet pipe, 16, an inlet pressure sensor, 17, an outlet pressure sensor, 18, a differential pressure transmitter, 19, a control box, 20, an inlet filter screen, 21, a discharge outlet, 22, an inlet filter discharger, 23, an inlet sweeper, 24, a gear step, 25, a press cover, 26, a small flange, 27, a collecting part, 28, a discharging part, 29, a collecting cavity, 30, a discharging channel, 31, a discharging control valve, 32, a spraying and sweeping part, 33, a spraying and sweeping pipe, 34, a communicating pipe, 35, a spraying and sweeping control valve, 36, an upper filter screen, 37, a stainless steel filter cartridge, 38, an access cover, 39, a cleaning main pipe, 40 and a cleaning branch pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

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 utility model belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Referring to fig. 1, 2, 3 and 4, a filtering device for a surface water heat pump unit comprises a filtering tank 12 with an inlet 10 and an outlet 11, wherein external fluid (surface water) enters the filtering tank 12 through the inlet 10 and is discharged from the outlet 11; an in-tank filter assembly for filtering fluid passing through the tank is arranged between the inlet 10 and the outlet 11 in the filter tank 12, surface water entering the filter tank 12 can be filtered through the in-tank filter assembly, a drain pipeline for discharging filter materials in the tank is communicated with the bottom of the filter tank 12, the filtered filter materials can be discharged from the drain pipeline, two drain pipelines are arranged, one is an electric drain pipeline 13, and the other is a manual drain pipeline 14.

The inlet of the filter tank 12 is communicated with an inlet pipeline 15, and an electric regulating valve for controlling fluid to enter the filter tank 12 through the inlet is arranged on the inlet pipeline 15 and is used for regulating and controlling external surface water to enter the filter tank 12 through the inlet pipeline 15; an inlet pressure sensor 16 for monitoring inlet fluid pressure is arranged at the inlet of the filter tank 12, an outlet pressure sensor 17 for monitoring outlet fluid pressure is arranged at the outlet of the filter tank 12, a differential pressure transmitter 18 is arranged outside the filter tank 12 and used for forming signal connection with the inlet pressure sensor 16 and the outlet pressure sensor 17, the differential pressure transmitter 18 is assembled above the outside of the filter tank 12, a control box 19 is arranged below the differential pressure transmitter 18, a control circuit in the control box 19 is used for controlling a relevant electric valve in the device, the electric regulating valve is electrically connected with the differential pressure transmitter 18, and the electric regulating valve regulates the opening angle of the electric regulating valve according to the signal of the differential pressure transmitter 18; if the pressure difference generated by the differential pressure transmitter 18 is greater than the set value, the opening degree of the electric control valve can be adjusted to balance the pressure difference so as to restore the pressure difference within the set pressure difference range.

In order to filter surface water before entering the filter tank 12, an inlet filter screen 20 is obliquely arranged in the inlet pipeline 15, the mesh of the inlet filter screen 20 is larger than that of a filter assembly in the tank, and impurities with larger particle sizes are filtered in advance so as to correspondingly reduce the filter pressure of the filter assembly in the tank; the inclined arrangement is such that, as shown in the figure, the upper end of the inlet screen 20 is close to the inlet end of the inlet duct 15, while the lower end is slightly remote from the inlet end of the inlet duct 15, with an inclination of around 10 °, so as to direct the filtrate as far as possible under the inlet screen 20 during the filtration process.

In order to facilitate the discharge of the filter materials collected under the outer side of the inlet filter screen 20, a discharge opening 21 which forms an arc-shaped trend along the circumferential direction of the inlet pipeline 15 is arranged on the outer side of the inlet pipeline 15 under the inlet filter screen 20, an inlet filter material discharger 22 for receiving the filter materials discharged from the discharge opening 21 is arranged under the outer side of the inlet pipeline 15, and the filter materials are discharged from the discharge opening 21 and enter the inlet filter material discharger 22 for discharge;

further, in order to enhance the collection of the filter material outside the inlet filter screen 20 toward the discharge port 21, an inlet sweeper 23 for sweeping the filter material on the outside of the inlet filter screen 20 into the discharge port 21 is provided above the outside of the inlet pipe 15 outside the inlet filter screen 20 to enable the filter material to be better introduced into the discharge port 21 and discharged from the inlet filter material discharger 22 for cleaning.

In further implementation, in order to facilitate replacement of the inlet filter 20, the inlet filter 20 is detachably assembled in the inlet pipe 15, specifically: a gear step 24 is formed on the inner wall of the inlet end of the inlet pipeline 15, the inner side of the periphery of the inlet filter screen 20 is blocked by the gear step 24, and a jacking sleeve 25 for jacking the outer side of the periphery of the inlet filter screen is arranged at the inlet end of the inlet pipeline 15; the capping sleeve 25 is cylindrical with an inner diameter and an outer diameter, the outer diameter is matched with the inner diameter of the inlet end of the inlet pipeline 15, and the inner diameter is matched with the inner diameter of the middle section of the inlet pipeline 15, namely, when the capping sleeve 25 is installed in the inlet pipeline 15, the inner wall of the inner pipeline is kept flat; the inner end of the pressing sleeve is matched with the gear step 24 to press the inlet filter screen 20, and the outer end of the pressing sleeve is fixedly connected with a flange of the inlet end of the inlet pipeline 15 through a connecting piece (screw). The outer end of the pressing sleeve is provided with a small flange 26, the inner ring of the flange surface of the inlet end of the inlet pipeline 15 is provided with a step surface for the small flange 26 to be placed in, the small flange 26 is placed in the step surface, and the outer surface of the small flange 26 is not higher than the outer surface of the inlet end flange of the inlet pipeline 15, so that the use of the flange of the inlet end of the inlet pipeline 15 is not affected. When the inlet filter screen 20 is replaced, the compression sleeve is taken down for replacement, and the inlet filter screen 20 is restrained at the inner ends of the gear step 24 and the pressing sleeve 25 after the replacement.

In the following specific implementation, the inlet filter discharger 22 comprises a collecting part 27 and a discharging part 28, a conical collecting cavity 29 is arranged in the collecting part 27, a large-caliber end of the collecting cavity 29 covers the discharge hole 21 and is communicated with the discharge hole 21, and a small-caliber end of the collecting cavity 29 is communicated with the discharging part 28; inside the discharge portion 28 is a discharge passage 30 communicating with the collection chamber, and a filtrate discharge control valve 31 is mounted on the discharge portion 28 to control filtrate discharge in the discharge passage. When discharge is desired, the discharge control valve 31 is opened and the inlet sweeper 23 can further sweep the screen across the screen, through the discharge port 21 into the collection chamber and out the discharge passage 30.

In the following implementation, the inlet sweeper 23 includes a sweeping part 32 and a sweeping pipeline 33, the sweeping part 32 is located in the inlet pipeline 15, the sweeping part 32 is internally provided with a fan-shaped sweeping channel, and the outlet of the sweeping channel is located on one side above the outer side of the inlet filter screen 20 and is arranged towards the outer side of the inlet filter screen 20, so that the sweeping part 32 can sweep the filter material outside the inlet filter screen 20 to a larger extent.

The lower end of the spraying and sweeping pipeline 33 penetrates into the inlet pipeline 15 to be communicated with the spraying and sweeping part 32, and the spraying and sweeping pipeline 33 and the inlet pipeline 15 are assembled in a threaded mode, so that the installation and the disassembly are convenient when the inlet filter screen 20 is replaced; the upper end of the spray sweep pipe 33 is screwed to a communication pipe 34, and a spray sweep control valve 35 is mounted on the communication pipe 34. A communication conduit 34 communicates with the outlet of the canister 12 for directing fluid exiting the outlet of the canister 12 into the inlet sweeper 23.

The in-can filter assembly of the present utility model will be described as follows: the in-tank filter assembly includes an upper filter screen 36 above the interior of the filter tank 12, and a stainless steel filter cartridge 37 below the interior of the filter tank 12; the upper filter screen 36 is near the outlet of the filter tank 12, and the stainless steel filter cartridge 37 is near the inlet of the filter tank 12; wherein, the mesh of the upper filter screen 36 is smaller than that of the stainless steel filter cartridge 37, and the mesh of the stainless steel filter cartridge 37 is smaller than that of the inlet filter screen 20. The large particulate impurities in the surface water are filtered through the inlet filter screen 20, the middle particulate impurities are filtered through the stainless steel filter cartridge 37, the small particulate impurities are filtered through the upper filter screen 36, and the risk of easy blockage caused by centralized filtration is reduced through filtration at a plurality of positions layer by layer.

Wherein, upper filter screen 36, stainless steel cartridge filter 37 all can be with the bolt detachable assembly of periphery in filtering jar 12, and the quantity of two can increase the use according to the filtration demand. Access openings are provided on the upper and lower sides of the canister 12, and a transparent window may be provided in the corresponding access cover 38 for ease of viewing.

In order to reversely clean the filter screen in the filter tank 12, a cleaning main pipe 39 is arranged at the top in the filter tank 12, a plurality of cleaning branch pipes 40 are communicated below the cleaning main pipe 39, the cleaning range formed by all the cleaning branch pipes 40 covers the upper surface of the upper filter screen 36, the outlets of the cleaning branch pipes are arranged towards the upper filter screen 36, the upper end of the cleaning main pipe 39 is led out of the filter tank 12 to be communicated with the cleaning tank, and cleaning water is led in.

Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present utility model to illustrate the technical solution of the present utility model, but not to limit the scope of the present utility model; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the utility model.

Claims (6)

1. The filtering device for the surface water heat pump unit comprises a filtering tank with an inlet and an outlet, wherein external fluid enters the filtering tank through the inlet and is discharged from the outlet; an in-tank filter assembly used for filtering fluid passing through the tank is arranged in the filter tank between the inlet and the outlet, and a sewage pipeline used for discharging filtered materials in the tank is communicated with the bottom of the filter tank; it is characterized in that the method comprises the steps of,

an inlet of the filter tank is communicated with an inlet pipeline, and an electric regulating valve for controlling fluid to enter the filter tank through the inlet is arranged on the inlet pipeline; an inlet pressure sensor for monitoring inlet fluid pressure is arranged at the inlet of the filter tank, an outlet pressure sensor for monitoring outlet fluid pressure is arranged at the outlet of the filter tank, and a differential pressure transmitter is arranged outside the filter tank and used for forming signal connection with the inlet pressure sensor and the outlet pressure sensor, an electric regulating valve is electrically connected with the differential pressure transmitter, and the electric regulating valve regulates the opening angle of the electric regulating valve according to the signal of the differential pressure transmitter;

an inlet filter screen is obliquely arranged in the inlet pipeline, and the mesh holes of the inlet filter screen are larger than those in the filter assembly in the tank;

a discharge hole which forms an arc trend along the circumferential direction of the inlet pipeline is formed on the outer side of the inlet pipeline below the inlet filter screen, and an inlet filter material discharger for receiving filter materials discharged from the discharge hole is arranged on the outer side of the inlet pipeline below the inlet pipeline;

and an inlet sweeper arranged above the outer side of the inlet pipeline and positioned outside the inlet filter screen and used for spraying fluid towards the outer side of the inlet filter screen so as to sweep the filtered matters on the outer side of the inlet filter screen into the discharge port.

2. A filter device for a surface water heat pump unit according to claim 1, wherein,

a gear step is formed on the inner wall of the inlet end of the inlet pipeline, the inner side of the periphery of the inlet filter screen is blocked by the gear step, and a jacking sleeve for jacking the outer side of the periphery of the inlet filter screen is arranged at the inlet end of the inlet pipeline;

the inner end of the capping sleeve is matched with the gear step to compress the inlet filter screen, and the outer end of the capping sleeve is fixedly connected with a flange at the inlet end of the inlet pipeline through a connecting piece.

3. A filter device for a surface water heat pump unit according to claim 1, wherein,

the inlet filter material discharger comprises a collecting part and a discharging part, wherein the inside of the collecting part is a conical collecting cavity, one large-caliber end of the collecting cavity covers the discharge hole and is communicated with the discharge hole, and one small-caliber end of the collecting cavity is communicated with the discharging part;

the interior of the discharge portion is a discharge channel communicated with the collecting cavity, and a filtrate discharge control valve is arranged on the discharge portion so as to control filtrate in the discharge channel to be discharged.

4. A filter device for a surface water heat pump unit according to claim 1, wherein,

the inlet sweeper comprises a sweeping part and a sweeping pipeline, wherein the sweeping part is positioned in the inlet pipeline, the inside of the sweeping part is a fan-shaped sweeping channel, and an outlet of the sweeping channel is positioned on one side above the outer side of the inlet filter screen and is arranged towards the outer side of the inlet filter screen;

the lower end of the spraying and sweeping pipeline penetrates into the inlet pipeline to be communicated with the spraying and sweeping part, the upper end of the spraying and sweeping pipeline is detachably connected with a communicating pipeline, and a spraying and sweeping control valve is arranged on the communicating pipeline.

5. A filter device for a surface water heat pump unit according to claim 1, wherein,

the in-tank filter assembly comprises an upper filter screen positioned above the inside of the filter tank and a stainless steel filter cartridge positioned below the inside of the filter tank; the upper filter screen is close to the outlet of the filter tank, and the stainless steel filter cartridge is close to the inlet of the filter tank;

wherein, the mesh of upper filter screen is less than the mesh of stainless steel cartridge filter, and the mesh of stainless steel cartridge filter is less than the mesh of import filter screen.

6. A filter device for a surface water heat pump unit according to claim 1, wherein,

the communication pipeline is communicated with the outlet of the filter tank and is used for guiding fluid discharged from the outlet of the filter tank to enter the inlet sweeper.