A central heating system dirt removal device

Abstract

The present application relates to heating equipment technical field, especially centralized heating system pollution removal device, including integrated backwash filter and controller, integrated backwash filter includes filter shell, both sides of filter shell are provided with short section cylinder, the outer wall of short section cylinder is provided with water inlet and blowdown one, the outer port of short section cylinder is provided with cylinder cover, the inner side of cylinder cover is provided with pollution collection mouth, pollution collection mouth is connected with blowdown two that is arranged on cylinder cover, short section cylinder is provided with cylindrical filter screen, the outer wall between cylindrical filter screen and short section cylinder inner wall is provided with water passing cavity, the inner end side of water passing cavity is provided with sealing assembly, the outside end of cylindrical filter screen is supported on pollution collection mouth, the inside end of cylindrical filter screen is supported on mid-plate, the present application integrates main and standby filter screen in the same filter shell, realizes the backwash pollution removal of opposite filter screen while single circuit pipeline normal filtration water supply, and the integrated degree of overall equipment is high, does not need manual cleaning, can effectively guarantee the continuous stable operation of heating system.

Description

Technical Field

[0001] This invention relates to the field of heating equipment technology, and in particular to a decontamination device for a centralized heating system. Background Technology

[0002] If impurities and contaminants in the hot water of centralized heating systems are not removed promptly, they can cause blockages in the heating equipment over time, affecting its operation and, in severe cases, leading to pipe ruptures. Currently, most existing centralized heating systems on the market use two sets of filtration and decontamination devices: a primary and a backup system. These devices operate alternately and require regular manual cleaning.

[0003] The problems with the existing technology are: the main and backup filtration and decontamination equipment occupy a large amount of space in the machine room; and they require regular manual disassembly and cleaning, which is quite time-consuming. Summary of the Invention

[0004] Based on the above problems, the purpose of this invention is to provide a decontamination device for a centralized heating system. The invention adopts the following technical solution:

[0005] This invention provides a decontamination device for a centralized heating system, comprising:

[0006] An integrated backwash filter includes a filter housing with an outlet at the bottom. Symmetrically arranged on both sides of the filter housing are short sections with open ends, fixed to the filter housing. Each short section has an inlet and a drain outlet on its outer wall outside the filter housing. The inner port of the short section communicates with the interior of the filter housing. A cover is provided at the outer port of the short section, with a sludge collection port on its inner side connected to a second drain outlet on the cover. A cylindrical filter screen is installed inside the short section, with a water-passing cavity between the outer wall of the cylindrical filter screen and the inner wall of the short section. A sealing assembly is provided at the inner end of the water-passing cavity. The outer end of the cylindrical filter screen abuts against the sludge collection port, and the inner end of the cylindrical filter screen abuts against a partition plate.

[0007] The controller is electrically connected to an inlet control valve, a first drain valve, a second drain valve, and an outlet control valve. The inlet control valve is installed on an inlet pipe, which is connected to the inlet. The first drain valve is installed on a first drain pipe, which is connected to a first drain outlet. The second drain valve is installed on a second drain pipe, which is connected to a second drain outlet. The outlet control valve is installed on an outlet pipe, which is connected to the outlet.

[0008] Preferably, the sealing assembly includes a retaining ring and an annular sealing ring, wherein the retaining ring is fixed to the inner end of the short section cylinder and abuts against the end face of the annular sealing ring.

[0009] Preferably, the sealing assembly further includes an annular water-separating plate one and an annular water-separating plate two, both of which are embedded in the annular sealing ring. The annular water-separating plate one is fixed on the outer wall of the cylindrical filter screen, and the annular water-separating plate two is fixed on the retaining ring.

[0010] Preferably, the cylindrical filter screen has a plurality of filter holes one on the outer side and a plurality of filter holes two on the inner side, with the sealing component as the boundary. The diameter of the filter holes two is smaller than the diameter of the filter holes one.

[0011] Preferably, the sewage collection port is funnel-shaped.

[0012] Preferably, the filter housing includes a shell body, which is cylindrical, with a top cover at the upper end and a bottom cover at the lower end; the top of the middle partition is fixed to the top cover.

[0013] Preferably, a secondary filtration assembly is provided in the housing;

[0014] The secondary filtration assembly includes an annular boss and a conical filter screen. The annular boss is fixed on the inner wall of the housing. The conical filter screen has an open structure at both ends. The upper end of the conical filter screen abuts against the annular boss, and the lower end abuts against the bottom cover. The bottom cover has a drain port three in the area corresponding to the conical filter screen.

[0015] Preferably, the conical filter screen has a brush plate inside, the brush plate is fixed on a rotating shaft, the rotating shaft is rotatably connected to the bottom cover, and is poweredly connected to a drive device installed on the bottom cover.

[0016] Preferably, a pressure detection sensor and a flow detection sensor are installed on the water inlet pipe downstream of the water inlet control valve, and both the pressure detection sensor and the flow detection sensor are electrically connected to the controller.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] This invention integrates main and backup filters in the same filter housing. While the single pipeline is filtering and supplying water normally, it can also backwash and remove dirt from the filter on the other side. The overall equipment has a high degree of integration, requires no manual cleaning, and can effectively ensure the continuous and stable operation of the heating system. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of the pollution removal device for the centralized heating system of the present invention;

[0021] Figure 2 This is a schematic diagram of the integrated backwash filter of the present invention;

[0022] Figure 3 This is a schematic diagram of the sealing assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the secondary filtration component of the present invention;

[0024] Figure 5 This is a diagram illustrating the water flow direction to illustrate the working principle of this invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Integrated backwash filter; 101. Filter housing; 101-1. Housing body; 101-2. Top cover; 101-3. Bottom cover; 102. Outlet; 103. Short section cylinder; 104. Inlet; 105. Drain outlet one; 106. Cylinder cover; 107. Sludge collection port; 108. Drain outlet two; 109. Cylindrical filter screen; 109-1. Filter hole one; 109-2. Filter hole two; 110. Water passage cavity; 111. Sealing assembly; 111-1. Retaining ring; 111-2. Annular sealing ring; 111-3. Annular water baffle one; 111-4 1. Annular baffle plate II; 112. Middle baffle plate; 113. Secondary filter assembly; 113-1. Annular boss; 113-2. Conical filter screen; 113-3. Drain outlet III; 113-4. Brush plate; 113-5. Rotating shaft; 113-6. Drive device; 2. Controller; 201. Inlet control valve; 202. Drain valve I; 203. Drain valve II; 204. Outlet control valve; 3. Inlet pipe; 4. Drain pipe I; 5. Drain pipe II; 6. Outlet pipe; 7. Force sensor; 8. Flow sensor; 9. Drain pipe III; 901. Drain valve III. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 As shown in the figure, this embodiment discloses a decontamination device for a centralized heating system, including an integrated backwash filter 1 and a controller 2. The controller 2 is a commercially available product, and the inlet control valve 201, drain valve one 202, drain valve two 203, and outlet control valve 204 are all electrically connected to the controller 2. The controller 2 controls the on / off state of the pipelines of each valve.

[0028] like Figure 2As shown, the integrated backwash filter 1 includes a filter housing 101. An outlet 102 is located at the bottom of the filter housing 101. Short sections 103 with open ends are symmetrically arranged on both sides of the filter housing 101. The short sections 103 are fixed to the filter housing 101. An inlet 104 and a drain 105 are located on the outer wall of the short sections 103 outside the filter housing 101. The inner port of the short sections 103 communicates with the interior of the filter housing 101, and a cover 1 is located at the outer port of the short sections 103. 06. A sludge collection port 107 is provided on the inner side of the cylinder cover 106. The sludge collection port 107 is funnel-shaped and is connected to the sludge discharge port 108 provided on the cylinder cover 106. A cylindrical filter screen 109 is provided in the short section cylinder 103. A water passage cavity 110 is provided between the outer wall of the cylindrical filter screen 109 and the inner wall of the short section cylinder 103. A sealing component 111 is provided on the inner end of the water passage cavity 110. The outer end of the cylindrical filter screen 109 abuts against the sludge collection port 107, and the inner end of the cylindrical filter screen 109 abuts against the middle partition plate 112.

[0029] The inlet control valve 201 is installed on the inlet pipe 3, which is connected to the inlet port 104. A pressure sensor 7 and a flow sensor 8 are installed on the inlet pipe 3 downstream of the inlet control valve 201. Both the pressure sensor 7 and the flow sensor 8 are electrically connected to the controller 2. The first drain valve 202 is installed on the first drain pipe 4, which is connected to the first drain port 105. The second drain valve 203 is installed on the second drain pipe 5, which is connected to the second drain port 108. The outlet control valve 204 is installed on the outlet pipe 6, which is connected to the outlet port 102.

[0030] like Figure 3 As shown, the sealing assembly 111 includes a retaining ring 111-1 and an annular sealing ring 111-2. The retaining ring 111-1 is fixed to the inner end of the short section cylinder 103 and abuts against the end face of the annular sealing ring 111-2. The retaining ring 111-1 prevents the annular sealing ring 111-2 from coming out of the short section cylinder 103.

[0031] To improve the sealing performance of the sealing assembly 111, the sealing assembly 111 also includes an annular water-separating plate 111-3 and an annular water-separating plate 111-4. Both the annular water-separating plate 111-3 and the annular water-separating plate 111-4 are embedded in the annular sealing ring 111-2. There are multiple annular water-separating plates 111-3, all of which are fixed on the outer wall of the cylindrical filter screen 109. The annular water-separating plate 111-4 is fixed on the retaining ring 111-1.

[0032] In this embodiment, the cylindrical filter screen 109 is bounded by the sealing component 111, with a plurality of filter holes 109-1 on the outer side and a plurality of filter holes 109-2 on the inner side. The diameter of the filter holes 109-2 is smaller than that of the filter holes 109-1.

[0033] like Figure 4 As shown, in this embodiment, the filter housing 101 includes a shell 101-1, which is cylindrical. A top cover 101-2 is provided at the upper end of the shell 101-1, and a bottom cover 101-3 is provided at the lower end. The top of the partition plate 112 is fixed to the top cover 101-2. A secondary filtration assembly 113 is provided in the shell 101-1.

[0034] The secondary filtration assembly 113 includes an annular boss 113-1 and a conical filter screen 113-2. The annular boss 113-1 is fixed to the inner wall of the housing 101-1. The conical filter screen 113-2 has an open structure at both ends. The larger opening at the upper end of the conical filter screen 113-2 abuts against the annular boss 113-1. The annular boss 113-1 is provided with a groove for positioning the conical filter screen 113-2. The smaller opening at the lower end of the conical filter screen 113-2 abuts against the bottom cover 101-3. The bottom cover 101-3 is provided with a drain outlet 113-3 in the area corresponding to the conical filter screen 113-2.

[0035] The conical filter screen 113-2 is equipped with a brush plate 113-4 inside. The brush on the brush plate 113-4 contacts the conical filter screen 113-2. The brush plate 113-4 is fixed on the rotating shaft 113-5. The rotating shaft 113-5 is rotatably connected to the bottom cover 101-3 and is poweredly connected to the drive device 113-6 installed on the bottom cover 101-3.

[0036] like Figure 5 As shown, the working principle of this invention is as follows:

[0037] In this embodiment, the cylindrical filter screens 109 in the short sections 103 on both sides of the filter housing 101 serve as backups for each other.

[0038] For example, when the cylindrical filter screen 109 on the left side becomes blocked, the pressure detection sensor 7 and the flow detection sensor 8 on the left water inlet pipe 3 first detect the abnormal signal (the system pressure is very high and the flow rate is very low), and feed the electrical signal back to the controller 2. The controller 2 controls the left water inlet control valve 201 to close and opens the right water inlet control valve 201, so as to realize the water supply of the right water inlet pipe 3.

[0039] Water flows from the inlet pipe 3 on the right side through the inlet 104 into the water passage cavity 110 on the right side. After being filtered through the first filter hole 109-1 on the cylindrical filter screen 109, the water enters the interior of the cylindrical filter screen 109. Then, after being filtered through the second filter hole 109-2 on the cylindrical filter screen 109, the water enters the interior of the filter housing 101. The water entering the filter housing 101 is filtered through the conical filter screen 113-2 and then enters the outlet pipe 6 through the outlet 102.

[0040] When the water supply is switched from the left inlet pipe 3 to the right inlet pipe 3 and normal water output is achieved, the controller 2 controls the intermittent opening of the drain valve 1 202 and the drain valve 2 203 to discharge the sewage from the left cylindrical filter screen 109. Specifically, when the drain valve 1 202 is opened, the water in the filter housing 101 enters the interior of the cylindrical filter screen 109 through the filter holes 2 109-2 on the left cylindrical filter screen 109, backflushing the dirt attached to the inner wall of the filter screen into the water passage cavity 110 on the left. Together with the dirt attached to the outer surface of the cylindrical filter screen 109 in the water passage cavity 110, they are discharged through the drain port 105 and the drain pipe 4. When the drain valve 203 is opened, the water in the filter housing 101 enters the interior of the cylindrical filter 109 through the filter hole 2109-2 on the left cylindrical filter screen 109, and backwashes the dirt attached to the inner wall of the filter screen to the collection port 107, and finally discharges through the drain port 2108 and the drain pipe 25.

[0041] When the conical filter screen 113-2 needs to be cleaned, the drive device 113-6 drives the brush plate 113-4 to brush the inner wall of the conical filter screen 113-2. The drain port 113-3 is connected to the drain pipe 9. The drain pipe 9 is equipped with a drain valve 901. The drain valve 901 is electrically connected to the controller 2.

[0042] When the cylindrical filter screen 109 on the right side becomes clogged, the pressure sensor 7 and flow sensor 8 on the right inlet pipe 3 first detect an abnormal signal (high system pressure, low flow rate) and feed the electrical signal back to the controller 2. The controller 2 then closes the right inlet control valve 201 and opens the left inlet control valve 201, thus supplying water to the left inlet pipe 3. This process is repeated to ensure normal water supply while simultaneously backwashing the right cylindrical filter screen 109.

[0043] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A decontamination device for a centralized heating system, characterized in that, include: An integrated backwash filter (1) includes a filter housing (101), an outlet (102) at the bottom of the filter housing (101), and short sections (103) with open ends symmetrically arranged on both sides of the filter housing (101). The short sections (103) are fixed to the filter housing (101). The short sections (103) have an inlet (104) and a drain (105) on their outer walls outside the filter housing (101). The inner port of the short sections (103) communicates with the interior of the filter housing (101). The port is provided with a cylindrical cover (106), and a sludge collection port (107) is provided on the inner side of the cylindrical cover (106). The sludge collection port (107) is connected to a second sludge discharge port (108) provided on the cylindrical cover (106). A cylindrical filter screen (109) is provided in the short section cylinder (103). A water passage cavity (110) is provided between the outer wall of the cylindrical filter screen (109) and the inner wall of the short section cylinder (103). A sealing component (111) is provided on the inner end of the water passage cavity (110). The outer end of the cylindrical filter screen (109) abuts against the sludge collection port (107), and the inner end of the cylindrical filter screen (109) abuts against the middle partition plate (112). The controller (2) is electrically connected to the inlet control valve (201), the first drain valve (202), the second drain valve (203), and the outlet control valve (204); the inlet control valve (201) is installed on the inlet pipe (3), which is connected to the inlet (104); the first drain valve (202) is installed on the first drain pipe (4), which is connected to the first drain outlet (105); the second drain valve (203) is installed on the second drain pipe (5), which is connected to the second drain outlet (108); and the outlet control valve (204) is installed on the outlet pipe (6), which is connected to the outlet (102).

2. The decontamination device for a centralized heating system according to claim 1, characterized in that: The sealing assembly (111) includes a retaining ring (111-1) and an annular sealing ring (111-2). The retaining ring (111-1) is fixed to the inner end of the short section cylinder (103) and is in abutting fit with the end face of the annular sealing ring (111-2).

3. The centralized heating system decontamination device according to claim 2, characterized in that: The sealing assembly (111) further includes an annular water-separating plate one (111-3) and an annular water-separating plate two (111-4). The annular water-separating plate one (111-3) and the annular water-separating plate two (111-4) are both embedded in the annular sealing ring (111-2). The annular water-separating plate one (111-3) is fixed on the outer wall of the cylindrical filter screen (109), and the annular water-separating plate two (111-4) is fixed on the retaining ring (111-1).

4. The decontamination device for a centralized heating system according to claim 1, characterized in that: The cylindrical filter screen (109) is bounded by the sealing component (111), with a plurality of filter holes 1 (109-1) on the outer side and a plurality of filter holes 2 (109-2) on the inner side. The diameter of the filter holes 2 (109-2) is smaller than the diameter of the filter holes 1 (109-1).

5. The decontamination device for a centralized heating system according to claim 1, characterized in that: The sewage collection port (107) is funnel-shaped.

6. The decontamination device for a centralized heating system according to claim 1, characterized in that: The filter housing (101) includes a shell body (101-1), which is cylindrical. A top cover (101-2) is provided at the upper end of the shell body (101-1), and a bottom cover (101-3) is provided at the lower end. The top of the middle partition (112) is fixed on the top cover (101-2).

7. The centralized heating system decontamination device according to claim 6, characterized in that: A secondary filter assembly (113) is provided in the shell (101-1); The secondary filtration assembly (113) includes an annular boss (113-1) and a conical filter screen (113-2). The annular boss (113-1) is fixed on the inner wall of the shell (101-1). The conical filter screen (113-2) has an open structure at both ends. The upper end of the conical filter screen (113-2) abuts against the annular boss (113-1), and the lower end abuts against the bottom cover (101-3). The bottom cover (101-3) is provided with a drain outlet three (113-3) in the area corresponding to the conical filter screen (113-2).

8. The decontamination device for a centralized heating system according to claim 7, characterized in that: The conical filter screen (113-2) is provided with a brush plate (113-4) inside. The brush plate (113-4) is fixed on the rotating shaft (113-5). The rotating shaft (113-5) is rotatably connected to the bottom cover (101-3) and is poweredly connected to the drive device (113-6) installed on the bottom cover (101-3).

9. The decontamination device for a centralized heating system according to claim 1, characterized in that: A pressure detection sensor (7) and a flow detection sensor (8) are installed on the water inlet pipe (3) downstream of the water inlet control valve (201). Both the pressure detection sensor (7) and the flow detection sensor (8) are electrically connected to the controller (2).

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