CN205641161U - Automatic edulcoration device of central heating hot water - Google Patents

Abstract

The utility model relates to an automatic impurity removal device for central heating hot water, which comprises a controller and a water inlet switch control valve electrically connected with the controller, a reversing control valve, a water outlet switch control valve, and a first backwash water outlet control valve. , the second backwash water outlet control valve, throttle valve, pressure detection sensor, and flow detection sensor; the water inlet switch control valve communicates with the water inlet ends of the first filter and the second filter through the reversing control valve, and the first filter The water outlet ends of the filter and the second filter are respectively connected with the water outlet switch control valve through the pipeline. The utility model controls the switching of the water inlet direction through the controller, which can realize the automatic switching of the two sets of filter pipelines, and can also realize the operation of filtering and backwashing. The automatic switching, without manual operation, has a high degree of automation, and can improve the service life of the filter. When the filter is blocked or fails, it can automatically switch to another filter without stopping the heating, ensuring the continuous and stable operation of the heating system.

Description

An automatic impurity removal device for central heating hot water

technical field

The utility model belongs to the technical field of central heating water filtering equipment, in particular to an automatic impurity removal device for central heating hot water.

Background technique

The central heating hot water automatic impurity removal device is a solution to the central heating process, due to the incomplete cleaning of the pipeline, there are sand and oxides produced by the oxidation of the pipeline and other particulate matter brought into the pipeline, so as not to cause blockage of the water supply pipeline and users cannot heat. The equipment has the advantages of high intelligence and automation, especially for high-rise heating water supply and impurity removal.

Central heating hot water contains sand and some small impurities. If these sands and small impurities are not removed in time, it will cause noise in the circulation process of central heating hot water in the short term, affecting people's normal work and rest. The equipment is blocked or the radiator is damaged, causing hazards such as pipeline rupture. At present, most of the existing central heating and sand removal devices on the market adopt the method of manual replacement of the filter screen. This method is not easy to be noticed when the filter screen is clogged. It will not be discovered by the user until the user's heating is not in circulation. , it is very easy to cause high pressure or the risk of bursting in the user's home pipeline, and the filter screen is not easy to replace, and the user needs to stop heating to repair, which seriously affects the quality of heating and the life of heating equipment.

Contents of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a central heating hot water automatic impurity removal device with a high degree of automation. The utility model can detect the water pressure and flow in real time to ensure stable operation of the pipeline and no Stop heating, can run continuously.

The technical scheme that the utility model adopts in order to realize the above object is:

The central heating hot water automatic impurity removal device includes a controller and a water inlet switch control valve electrically connected to the controller, a reversing control valve, a water outlet switch control valve, a first backwash water outlet control valve, and a second backwash water outlet control valve. valve, throttle valve, pressure detection sensor, and flow detection sensor; the water inlet switch control valve communicates with the water inlet ends of the first filter and the second filter through the reversing control valve, and the water inlet ports of the first filter and the second filter The water outlet is connected to the water outlet switch control valve through pipes respectively. A pressure detection sensor and a flow detection sensor are arranged at the water inlet of the reversing control valve. A throttling valve is arranged on the top, the water inlet of the first backwash water outlet control valve is connected with the water inlet of the first filter, and the water outlet is connected with the drainage pipe; the water inlet of the second backwash water outlet control valve is connected with the second The water inlet end of the filter is connected, and the water outlet end is connected with the drainage pipe.

The above-mentioned first filter and second filter include a shell with one end open, the port of the shell is sealed by a sealing plate, a water inlet and a water outlet are processed on the side wall of the shell, and a front baffle and a support frame are sequentially installed in the inner cavity of the shell 1. The rear baffle, the front baffle and the rear baffle are respectively arranged at the two ends of the support frame. The support frame is formed by two semicircular support plates snapped together to form a cylindrical structure, and the two semicircular support plates are respectively A water hole is processed, a filter screen is coaxially arranged inside the support frame, a groove is processed on the side wall of the front baffle, and an annular sealing ring is arranged in the groove.

The water inlet direction and the water outlet direction of the above shell are perpendicular to the central axis.

Above-mentioned filter screen is stainless steel filter screen, and its filter diameter is 60～100 μm.

Compared with the prior art, the central heating hot water automatic impurity removal device of the utility model has the following beneficial effects:

(1) Switching the water inlet direction through the controller can realize the automatic switching of two sets of filter pipelines, and can also realize the automatic switching of filtering and backwashing operations, without manual operation, high degree of automation, and can improve the use of filters life.

(2) By setting up two filters in parallel, and when the filter is clogged or faulty, it can automatically switch to another filter, without stopping the heating, and the filter or filter can be replaced in time to ensure the continuous and stable operation of the heating system.

(3) The utility model has the advantages of simple structure, long service life of the filter, high impurity removal efficiency, stable system operation and low cost.

Description of drawings

FIG. 1 is a schematic diagram of the device structure of Example 1.

Fig. 2 is a schematic structural diagram of the filter in Fig. 1 .

Fig. 3 is a schematic diagram of the internal structure of the outer cylinder of Fig. 2 .

detailed description

The technical solution of the present utility model is further described in conjunction with the embodiments and accompanying drawings.

As can be seen from Fig. 1, the automatic impurity removal device for central heating hot water in this embodiment is composed of a controller 11, a water inlet switch control valve 1, a pressure detection sensor 2, a flow detection sensor 3, a reversing control valve 4, and a throttle valve 8 , the first filter 5, the second filter 9, the water outlet switch control valve 7, the first backwash water outlet control valve 6 and the second backwash water outlet control valve 10 are formed by connecting pipes.

Wherein: the controller 11 is a commercially available product, the pressure detection sensor 2 and the flow detection sensor 3 are respectively connected to the input end of the controller 11 through wires, and the output ends of the controller 11 are respectively connected to the water inlet switch control valve 1 and the reversing valve through wires. The control valve 4, the throttle valve 8, the water outlet switch control valve 7, the first backwash water outlet control valve 6 and the second backwash water outlet control valve 10 are connected to control the on-off of the pipelines of each valve.

The water inlet switch control valve 1 of the present embodiment is installed on the central heating hot water inlet pipeline, and is used to control the on and off of the hot water entering the sand and impurity removal device under special circumstances. The water inlet switch control valve 1 communicates with the water inlet ends of the first filter 5 and the second filter 9 through the reversing control valve 4, that is, the first filter 5 and the second filter 9 are installed side by side, and the first filter 5 and the water outlet of the second filter 9 communicate with the water outlet switch control valve 7 through pipes respectively, and control the water inlet passage of the reversing control valve 4 through the controller 11, and switch to the first filter 5 or the second filter 9 to work . In order to detect the water inlet pressure and flow rate of the first filter 5 or the second filter 9 in real time, a pressure detection sensor 2 and a flow detection sensor 3 are installed at the water inlet end of the reversing control valve 4 in this embodiment. The water inlet end of the first filter 5 of the present embodiment is also communicated with the drain pipe through the first backwash pipeline, and the water inlet end of the second filter 9 is also communicated with the drain pipeline through the second backwash pipeline, and in the first The first backwash outlet control valve 6 and the second backwash outlet control valve 10 are respectively installed on the backwash pipeline and the second backwash pipeline, that is, the water inlet end of the first backwash outlet control valve 6 and the first filter 5 The water inlet port of the second backwash water outlet control valve 10 is connected to the water inlet end of the second filter 9, and the water outlet end is connected to the water discharge pipe to discharge the waste water from backwashing. . In order to increase the system pressure in the process of backwashing, a throttling pipeline is communicated between the reversing control valve 4 and the water outlet switch control valve 7 and a throttle valve 8 is installed on the throttle pipeline.

Referring to Figures 2 and 3, the first filter 5 and the second filter 9 have the same structure in this embodiment, and are composed of a housing 5-1, a sealing plate 5-2, a front baffle 5-3, and a support frame 5- 4 and a rear baffle 5-6, the shell 5-1 of this embodiment is a cylindrical structure with one end open, the port of the shell 5-1 is sealed with a sealing plate 5-2, in order to ensure the sealing of the sealing plate 5-2 Fixing effect, the inner surface of the sealing plate 5-2 is processed with a boss extending into the shell 5-1, and the boss is processed with external threads, which are connected with the inner wall of the shell 5-1 by threads, and on the sealing plate 5 -2 An annular sealing ring 5-7 is also installed on the port in contact with the shell 5-1. A water inlet and a water outlet are processed on the side wall of the casing 5-1, and the water inlet direction is perpendicular to the central axis of the casing 5-1 along the radial direction. A front baffle 5-3, a support frame 5-4, and a rear baffle 5-6 are successively installed in the inner cavity of the housing 5-1, and grooves are processed on the side walls of the front baffle 5-3, and in the grooves An annular sealing ring 5-7 is provided. The front baffle 5-3 and the rear baffle 5-6 are respectively arranged at the two ends of the support frame 5-4, and the support frame 5-4 of this embodiment is formed of a cylindrical structure by snapping two semicircular support plates Water holes are respectively processed on the two semicircular support plates, and a stainless steel filter screen 5-5 is coaxially arranged inside the support frame 5-4, and the filtering diameter of the modified filter screen 5-5 can be in the range of 60-100 μm internal adjustment.

The working process of the above-mentioned central heating hot water automatic impurity removal device is as follows:

During normal operation: the hot water for central heating passes through the left position of the water inlet switch control valve 1, passes through the detection points of the pressure detection sensor 2 and the flow detection sensor 3, and then flows through the left position of the reversing control valve 4, the first filter The left position of device 5 and water outlet switch control valve 7 enters the radiator circulation system for heating. Sand and impurities are removed from the hot water in the first filter 5. At this time, the left positions of the first backwash water outlet control valve 6 and the water outlet switch control valve 7 are connected to the circuit.

Backwash working condition: When the filter is clogged due to long-term work, the system regularly backwashes the filter under the control of the controller 11. The specific working process is: the controller 11 controls the movement of the reversing control valve 4 To the middle position, control the water outlet switch control valve 7 to be in the closed position. At this time, after the high-pressure hot water passes through the throttle valve 8 to increase the pressure, the first filter 5 is reversely flushed, and the impurities and hot water after flushing are discharged, and then The controller 11 continues to control the water outlet switch control valve 7 to be in the open position, controls the reversing control valve 4 to continue to move to the left position, and enters the normal working condition.

Clogging judging working condition: If during normal working process, the monitoring parameters of the controller 11 show that the system pressure is very high and the flow rate is very small, at this time the controller 11 judges that the first filter 5 may be blocked, thereby controlling the reversing control valve 4 The right position of the right position is connected to the circuit, and the pressure and flow of the system are checked again. If the right position works normally, it can be concluded that the first filter 5 is clogged and faulty. At this time, the first filter 5 is reversely flushed, and the reversing control is controlled again. The left position of the valve 4 is connected to the circuit. If the pressure and flow parameters are normal at this time, it will work, otherwise the controller 11 controls the right position of the reversing control valve 4 to be connected to the circuit again. In addition, when the first filter 5 needs to be replaced or repaired At this time, the right position of the reversing control valve 4 is connected to the circuit, and the second filter 9 filters to ensure the continuous operation of the hot water pipeline without heating and maintenance.

Claims (4)

1. a central heating hot water automatic foreign impurities removing device, including controller (11), it is characterised in that: also Including the water inlet switch control valve (1) electrically connected with controller (11) respectively, reversing control valve (4), Effluent switch control valve (7), the first backwash outlet water control valve (6), the second backwash outlet water control valve (10), choke valve (8) and press detection sensor (2), flow detection sensor (3)；Water inlet Switching control pilot (1) is by reversing control valve (4) and the first filter (5) and the second filter (9) Water inlet end connection, the water side of the first filter (5) and the second filter (9) respectively by pipeline and Effluent switch control valve (7) connects, and the water inlet end at reversing control valve (4) is provided with pressure detecting sensing Device (2) and flow detection sensor (3), reversing control valve (4) leads to effluent switch control valve (7) Cross choke manifold connection and in choke manifold, be provided with choke valve (8), the first backwash outlet water control valve (6) water inlet end and the water inlet end connection of the first filter (5), water side connect with drainage pipeline；The The water inlet end of two backwash outlet water control valves (10) and the water inlet end connection of the second filter (9), water side Connect with drainage pipeline.

Central heating hot water automatic foreign impurities removing device the most according to claim 1, it is characterised in that: described First filter (5) and the second filter (9) include the shell (5-1) of one end open, shell (5-1) Port by sealing plate (5-2) seal, shell (5-1) sidewall is machined with water inlet and outlet, It is sequentially installed with front apron (5-3), bracing frame (5-4), backboard (5-6) at shell (5-1) inner chamber, Front apron (5-3) and backboard (5-6) are separately positioned on the two ends of bracing frame (5-4), bracing frame (5-4) It is to be constituted a cylindrical structure by two semi-circular support plate clampings, two semi-circular support plate add respectively Work water hole, is coaxially arranged with drainage screen (5-5), at front apron (5-3) in bracing frame (5-4) inside Sidewall on be machined with groove, be provided with O-ring seal (5-7) in a groove.

Central heating hot water automatic foreign impurities removing device the most according to claim 2, it is characterised in that: described The water inlet direction of shell (5-1), water outlet direction and central axis.

Central heating hot water automatic foreign impurities removing device the most according to claim 2, it is characterised in that: described Drainage screen (5-5) is stainless steel filter screen, and its filter diameter is 60～100 μm.