Backwashing device of security filter

Abstract

The utility model relates to the technical field of security filters, in particular to a backwashing device of a security filter, which comprises a security filter body, a water inlet penetrates through the top end of the side surface of the security filter body, a first valve is mounted on the water inlet, and a water outlet penetrates through the bottom end of the side surface of the security filter body. A flaring is installed at the end of the water outlet, a second valve is installed on the water outlet, a branch pipe is arranged on the water outlet in a penetrating mode, a fourth valve is installed on the branch pipe, a sewage draining opening is formed in the bottom of the filter body in a penetrating mode, a third valve is installed on the sewage draining opening, and a filter element is movably arranged in the filter body. According to the utility model, the sewage draining exit is arranged at the bottom of the filter body in a penetrating manner, so that sewage accumulated at the bottom of the filter can be discharged more easily, and the sewage draining effect is improved; by arranging the water outlet and arranging the branch pipes on the water outlet, dirt can be prevented from being accumulated in the filter, blockage and damage to the filter are reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of security filter, particularly to a security filter backwashing device. BACKGROUND

[0002] The security filter is also called precision filter, the cylinder shell generally adopts stainless steel material manufacturing, adopts PP meltblown, wire burning, folding, titanium filter core, activated carbon filter core and other tubular filter cores as filter elements in the inside, selects different filter elements according to different filter medium and design process to reach the requirement of water quality.

[0003] The filter precision grade of the filter core installed in the security filter can be divided into 0.5 mu, 1 mu, 5 mu, 10 mu and the like, and different filter precision is selected according to different use occasions to ensure the precision of the water after filtration and the safety of the membrane element in the later stage. The water (medium) containing target suspended particles to be filtered enters the filter through the water inlet, is distributed to each filter core through the water inlet cavity, the target suspended particles larger than the filter precision requirement are intercepted on the surface of the filter core, and the qualified water meeting the requirement passes through the filter layer of the filter core and is collected in the water outlet cavity between the upper and lower partition plates and flows out from the water outlet of the cylinder. With the extension of the filtration time, the target suspended particles intercepted on the surface of the filter core also gradually increase, the filter core is gradually blocked, and the pressure difference between the inside and outside of the filter core gradually rises, and when the set filtration time or the set pressure difference value is reached, the filter core of the filter fails. Therefore, the filter core in the equipment can only be replaced regularly, and the filter core needs to be disassembled and assembled, which not only wastes manpower, but also causes economic waste and solid waste pollution. CONTENT

[0004] In view of the defects in the prior art, the security filter backwashing device provided by the utility model utilizes raw water or product water to perform filter core backwashing on the security filter, reduces the running materials and reduces the maintenance cost.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0006] A security filter backwashing device, comprising a security filter body, a water inlet is through the top end of the side surface of the security filter body, a first valve is installed on the water inlet, a water outlet is through the bottom end of the side surface of the security filter body, an expansion is installed at the end of the water outlet, a second valve is installed on the water outlet, a branch pipe is through the water outlet, a fourth valve is installed on the branch pipe, a blowdown outlet is through the bottom of the security filter body, a third valve is installed on the blowdown outlet, and a filter core is movably arranged in the security filter body.

[0007] Further, the top of the security filter body is provided with a differential pressure sensor, and the security filter body further comprises a PLC controller, which is electrically connected with the first valve, the second valve, the third valve and the fourth valve, and the differential pressure sensor is electrically connected with the PLC controller.

[0008] Further, the inside of the security filter body is movably provided with a mounting frame, and the filter core is mounted on the mounting frame.

[0009] Further, the flared portion is in the shape of a horn as a whole, and the flared portion is arranged inside the security filter body.

[0010] According to the above technical solution, the utility model has the beneficial effects of:

[0011] The utility model discloses a security filter body, which comprises a filter body, a flared portion arranged on the top of the filter body, a water inlet arranged on the bottom of the filter body, a first valve arranged on the water inlet, a second valve arranged on the flared portion, a third valve arranged on the flared portion, a fourth valve arranged on the flared portion, a mounting frame movably arranged in the filter body, a filter core arranged on the mounting frame, a water outlet arranged on the flared portion, and a drain arranged on the bottom of the filter body. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0013] Figure 1 It is a whole front view of the utility model.

[0014] Reference numerals:

[0015] 1-security filter body, 2-differential pressure sensor, 3-water inlet, 4-first valve, 5-mounting frame, 6-filter core, 7-water outlet, 8-second valve, 9-flared portion, 10-drain, 11-third valve, 12-branch pipe, 13-fourth valve. DETAILED DESCRIPTION

[0016] The embodiments of the technical solutions of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0017] Reference Figure 1The utility model provides a security filter backwash device, including security filter body 1, the side top of security filter body 1 is penetrated with water inlet 3, and the first valve 4 is installed on water inlet 3, and the side bottom of security filter body 1 is penetrated with water outlet 7, and the end of water outlet 7 is installed with flared portion 9, and the second valve 8 is installed on water outlet 7, and the branch pipe 12 is arranged on water outlet 7, and the fourth valve 13 is installed on branch pipe 12, and the bottom of security filter body 1 is penetrated with blowdown 10, and the third valve 11 is installed on blowdown 10, and the inside of security filter body 1 is movably provided with filter core 6.

[0018] In actual use, by penetrating the bottom of the security filter body 1 with the blowdown 10, the accumulated dirt at the bottom of the filter can be more easily discharged, improving the blowdown effect; by providing the water outlet 7 and the branch pipe 12 on the water outlet 7, the accumulation of dirt in the filter can be prevented, reducing the blockage and damage to the filter, and prolonging the service life of the equipment.

[0019] In this embodiment, the top of the security filter body 1 is provided with a differential pressure sensor 2, and further includes a PLC controller, which is electrically connected with the first valve 4, the second valve 8, the third valve 11 and the fourth valve 13, and the differential pressure sensor 2 is electrically connected with the PLC controller; specifically, the differential pressure sensor 2 senses the pressure difference between the inside and outside of the security filter body 1, when the security filter pressure difference rises to 01mpa, the instruction is transmitted to the PLC controller, the PLC controller controls the first valve 4 to open, blocks the continuous water injection of the water inlet 3, controls the second valve 8 to open, thereby blocking the water outlet of the water outlet 7, and controls the opening and closing of the fourth valve 13, thereby facilitating the injection of water flow into the branch pipe 12 and backwashing the filter core 6.

[0020] Wherein, in combination with the Figure 1 As shown in the drawings, the interface between the branch pipe 12 and the water outlet 7 is arranged on the right side of the second valve 8, thereby facilitating the water outlet and the backwashing work.

[0021] Wherein, the port of the branch pipe 12 can be externally connected with a water pump for water supply work.

[0022] In this embodiment, the inside of the security filter body 1 is movably provided with a mounting bracket 5, and the filter core 6 is mounted on the mounting bracket 5; specifically, by providing the mounting bracket 5, the filter core 6 can be conveniently mounted, the position of the filter core 6 can be conveniently adjusted, and the security filter body 1 can better perform the filtering work.

[0023] In this embodiment, the flared portion 9 is integrally arranged in a horn shape, and the flared portion 9 is arranged inside the security filter body 1, by arranging the flared portion 9 in a horn shape, the filter core 6 can be better cleaned during backwashing, and the utility is high.

[0024] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A security filter backwash device comprising a security filter body (1), characterised in that: The side top of the security filter body (1) is penetrated by a water inlet (3), the first valve (4) is installed on the water inlet (3), the side bottom of the security filter body (1) is penetrated by a water outlet (7), the end of the water outlet (7) is installed with a flared portion (9), the second valve (8) is installed on the water outlet (7), the branch pipe (12) is arranged on the water outlet (7), the fourth valve (13) is installed on the branch pipe (12), the bottom of the security filter body (1) is penetrated by a sewage outlet (10), the third valve (11) is installed on the sewage outlet (10), the filter core (6) is movably arranged in the security filter body (1).

2. A backwash apparatus for a security filter according to claim 1, wherein: The top of the security filter body (1) is installed with a differential pressure sensor (2), further comprising a PLC controller, the PLC controller is electrically connected with the first valve (4), the second valve (8), the third valve (11) and the fourth valve (13), the differential pressure sensor (2) is electrically connected with the PLC controller.

3. A backwash apparatus for a security filter according to claim 1, wherein: The inside of the security filter body (1) is movably arranged with a mounting bracket (5), the filter core (6) is installed on the mounting bracket (5).

4. The security filter backwash apparatus of claim 1, wherein: The flared portion (9) is arranged in a whole trumpet shape, the flared portion (9) is arranged in the security filter body (1).

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