Filtering device for circulating water for production

Abstract

The utility model relates to the technical field of composite pipeline production equipment, and particularly discloses a filtering device for circulating water for production, which comprises a filter cartridge for filtering impurities in hard water, the top and the bottom of the filter cartridge are respectively provided with a water inlet and a water outlet, and the water outlet at the bottom end of the filter cartridge is communicated with soft water treatment equipment. A filter plate which is used for filtering impurities in hard water and can vibrate in a reciprocating manner is transversely arranged in the filter cartridge, and a blow-off pipeline used for discharging the impurities on the surface of the filter plate is arranged on one side of the filter cartridge. The utility model aims at solving the problems that in the softening treatment process of cooling water, due to the fact that a large number of suspended substances are left in the cooling water and a large number of suspended substances are accumulated in a filter screen, cleaning is tedious, and then the working efficiency of softening treatment equipment is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipeline production equipment, in particular to a filtering device for circulating water used in production. Background Art

[0002] PVC composite pipe is a new type of pipe material, which uses PVC as the main raw material, adopts advanced production technology and equipment, and is made through processes such as compounding, molding, and cooling. This kind of pipe has excellent properties, such as corrosion resistance, high temperature resistance, high pressure resistance, and aging resistance, and is widely used in chemical, petroleum, and electric power fields.

[0003] The production of PVC composite pipes generally includes the following steps:

[0004] 1. Raw material preparation: Measure the PVC dry blend into the barrel and screw, and convert the dry blend into the desired "molten" state through heating, pressurization and shearing;

[0005] 2. Pipe extrusion production: The melt passes through the die head and die set, and the shape is formed according to the required pipe size and the flow characteristics of the melt flow. After the pipe leaves the extrusion die, it is sized by a precision sizing sleeve with external vacuum; the final cooling is carried out in a controlled water cooling chamber, and the shaping tractor passes through the shaping and cooling operations at a constant speed.

[0006] 3. Pipe cutting: Use an automatic cutting saw table to cut the pipe into the required length.

[0007] In the above-mentioned pipe extrusion production process, after the pipe is extruded, due to the high temperature, cooling water is needed to cool the pipe. In the process of cooling the pipe, the cooling water needs to be soft water. Soft water has the following advantages as cooling water:

[0008] 1. Improve cooling efficiency: Soft water can reduce the chance of scale and precipitation formation and improve cooling efficiency;

[0009] 2. Extend the service life of equipment: Soft water can reduce the content of hardness substances in water and extend the service life of equipment;

[0010] 3. Low water consumption, low energy consumption, no evaporation: Soft water can reduce the waste of water resources and achieve the purpose of energy saving;

[0011] 4. The water supply and drainage system is simplified, with less investment and less land occupation: Soft water can reduce the breakage rate of cooling equipment and reduce the cost of equipment maintenance and replacement.

[0012] However, in actual use, the cooling water will enter the circulation system for circulation after cooling the pipes. In the circulation system, the cooling water flows through multiple pipes and equipment. With the corrosion of the internal walls of the pipes and equipment and the precipitation and accumulation of suspended matter in the water, the concentration of dissolved solids in the circulating water may gradually increase. These dissolved solids are generally hard water components such as calcium and magnesium. They can affect the hardness of the water, thereby making the water hardness higher. In order to prevent water with higher hardness from entering the cooling equipment again, softening equipment is currently used to soften the water.

[0013] At present, when softening hard water with softening equipment, there will be a lot of particulate suspended matter remaining in the hard water, which will clog the softening equipment and affect the subsequent use of the softening equipment. However, at present, only a simple filter is used to filter out the suspended matter, but the filtering effect of the filter is relatively poor, and some suspended matter will remain in the water, and the residue after filtration is difficult to discharge. It is necessary to manually shut down the equipment and then manually remove the residue, which reduces the working efficiency of the treatment equipment. Utility Model Content

[0014] In view of the shortcomings of the prior art, the utility model provides a filtering device for circulating water for production, which solves the problem that during the softening process of cooling water, a large amount of suspended matter remains in the cooling water, a large amount of suspended matter accumulates in the filter screen, making cleaning cumbersome, thereby affecting the working efficiency of the softening treatment equipment.

[0015] In order to solve the above problems, the technical solution adopted by the utility model is:

[0016] A filtering device for circulating water for production includes a filter cartridge for filtering impurities in hard water, wherein a water inlet and a drain are respectively arranged at the top and bottom of the filter cartridge, and the drain at the bottom of the filter cartridge is connected to a soft water treatment device, wherein a filter plate for filtering impurities in hard water and capable of reciprocating vibration is transversely arranged in the filter cartridge, and a sewage pipe for discharging impurities on the surface of the filter plate is provided on one side of the filter cartridge.

[0017] The principle of this scheme is:

[0018] When the cooling water is softened, it needs to pass through the filtering equipment to filter out the particulate impurities in the cooling water. At this time, the cooling water enters the filter cartridge through the water inlet, and the filter plate in the filter cartridge filters out the impurities. During the filtering process, the filter plate vibrates back and forth, and the impurities filtered on the top surface of the filter plate are shaken off into the sewage pipe, thereby realizing the discharge of impurities on the surface of the filter plate.

[0019] The beneficial effects of this program are:

[0020] In the present application scheme, by setting a reciprocatingly vibrating filter plate and a sewage pipe, the reciprocatingly vibrating filter plate can drop all impurities on the surface of the filter plate into the sewage pipe. At this time, there is no need to manually clean the impurities on the surface of the filter plate. Compared with using a single filter net for filtering, the impurities in the filter net need to be manually cleaned once they accumulate. The present scheme can realize automatic cleaning of impurities without the need for manual operation, and there is no need to shut down the cooling water, which greatly improves the working efficiency of the filtering equipment.

[0021] Furthermore, the filter plate is inclined toward one side of the sewage pipe, and at the same time, a support rod is vertically connected to the bottom end of the filter plate, and a telescopic cylinder is vertically fixed to the inner bottom of the filter cylinder. The support rod is slidably connected in the telescopic cylinder, and a cam is installed inside the telescopic cylinder. The middle part of the cam is connected to a power shaft extending to the outside of the filter cylinder and connected to the motor; the cam in the telescopic cylinder is driven by the motor, and the power shaft is driven by the motor to continuously hit the bottom of the support rod, thereby realizing the up and down reciprocating vibration of the filter plate.

[0022] Once impurities are attached to the surface of the inclined filter plate, the impurities will move to one side of the sewage pipe under the action of gravity. At this time, since the filter plate moves up and down, when the surface of the filter plate and the sewage pipe are on the same horizontal line, the impurities on the surface of the filter plate will slide into the sewage pipe, thereby realizing automatic cleaning of the impurities.

[0023] Furthermore, an extension rod extending to the outside of the filter cartridge is fixed on the side of the filter plate, and a slide groove is provided on the outer wall of the filter cartridge for the extension rod to slide up and down; the extension rod protrudes to the outside of the filter cartridge, and when the motor is damaged or the power is temporarily cut off, the staff can intermittently manually push the extension rod up and down in the slide groove to clean impurities on the surface of the filter plate into the sewage pipe.

[0024] Furthermore, a movable sealing plate is provided on one side of the sewage pipe close to the filter cartridge; the sealing plate is a float valve, and the float of the sealing plate is arranged inside the filter cartridge. Once the water stored in the filter cartridge is large and exceeds the water level limit of the float, the float controls the sealing plate to close the sewage pipe to prevent the water in the filter cartridge from being discharged through the sewage pipe. When the water in the filter cartridge does not exceed the water level line of the float, the sealing plate is in an open state, so that impurities on the surface of the filter plate can be discharged from the sewage pipe.

[0025] Furthermore, a fixing block is laterally provided on one side of the filter plate away from the sewage pipe, and a vertical slot for the fixing block to be inserted into is vertically opened inside the filter cartridge. The fixing block is slidably connected in the slot, and the fixing block and the filter plate are integrally arranged. The fixing block is inserted in the slot, so that the filter plate can avoid being skewed while vibrating back and forth up and down.

[0026] Furthermore, a water injection hole is opened on the top surface of the sewage pipe on one side close to the sealing plate. As impurities are filtered out from the cooling water, the impurities are in a relatively moist state at this time, and some impurities will adhere to the inside of the sewage pipe. By injecting water into the water injection hole, some impurities attached to the inner wall of the sewage pipe can be washed away. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional schematic diagram of the filter cartridge of the utility model;

[0028] Figure 2 This is a schematic diagram of the outer wall slide groove arrangement of the filter cartridge of the utility model.

[0029] The reference numerals in the drawings of the specification include:

[0030] Filter cartridge 1, float 1-1, filter plate 2, extension rod 2-1, support rod 2-2, fixing block 2-3, water inlet 3, card slot 4, drain outlet 5, sewage pipe 6, sealing plate 6-1, water injection hole 6-2, telescopic cylinder 7, cam 7-1, power shaft 7-2, slide groove 8. DETAILED DESCRIPTION

[0031] The following is further described in detail through specific implementation methods:

[0032] Attach Figure 1 For example, in the figure, the sewage pipe 6 is arranged on the right side of the filter cartridge 1, and the filter plate 2 is arranged horizontally, which is used as a direction reference.

[0033] The embodiment is basically as shown in the attached Figure 1 and attached Figure 2 As shown:

[0034] When producing composite pipes, cooling water is used to treat the pipes. At this time, the cooling water will be recycled and reused through filtering devices and softening treatment equipment.

[0035] Filter cartridge 1 as attached Figure 1 As shown, a water inlet 3 is provided at the top of the filter cartridge 1, and cooling water enters the filter cartridge 1 from the water inlet 3. At the same time, a drain port 5 connected to the softening treatment equipment is provided at the bottom of the filter cartridge 1. A filter plate 2 is disposed transversely inside the filter cartridge 1, and the filter plate 2 is inclined to the right. A support rod 2-2 is vertically fixed to the bottom of the filter plate 2, and the support rod 2-2 is perpendicular to the ground. At the same time, a telescopic cylinder 7 is fixedly welded to the inner bottom of the filter cartridge 1, and the interior of the telescopic cylinder 7 is hollow. The support rod 2-2 is inserted into the interior of the telescopic cylinder 7, and the support rod 2-2 is slidably and sealedly connected to the support of the telescopic cylinder 7.

[0036] When the cooling water enters the filter cartridge 1, the filter plate 2 filters the particulate impurities in the cooling water. At the same time, since the filter plate 2 is tilted, the filtered impurities tilt toward the right side of the filter plate 2 under the action of gravity, avoiding the accumulation of a large amount of impurities on the left side of the filter plate 2, thereby causing the left side of the filter plate 2 to be blocked.

[0037] The right side of the filter cartridge 1 is fixedly connected with a sewage pipe 6 , which is communicated with the inside of the filter cartridge 1 . Meanwhile, a sealing plate 6 - 1 for opening and closing the sewage pipe 6 is vertically installed inside the sewage pipe 6 .

[0038] A cam 7-1 is installed inside the telescopic cylinder 7. The middle part of the cam 7-1 is fixedly connected with a power shaft 7-2 extending to the outside of the filter cylinder 1. The end of the power shaft 7-2 is connected with a motor, which is not drawn in the attached figure. The motor drives the power shaft 7-2 to realize the rotation of the cam 7-1, and then the cam 7-1 continuously hits the bottom end of the support rod 2-2, so as to realize the up and down reciprocating vibration of the filter plate 2, and shake the impurities on the surface of the filter plate 2 to the right side of the filter plate 2. When the filter plate 2 moves up and down, the impurities accumulate on the right side of the filter plate 2. When the filter plate is at the top dead point, the sewage pipe is located below the filter plate, and when the filter plate is at the bottom dead point, the sewage pipe is located above the filter plate. Once the filter plate 2 moves to the sewage pipe 6, the impurities on the right side of the top surface of the filter plate 2 will enter the sewage pipe 6. Through the up and down reciprocating movement of the filter plate 2, the indirect discharge of impurities can be realized.

[0039] A fixed block 2-3 is fixed on the left side of the filter plate 2, and the fixed block 2-3 is connected to the filter plate 2 as a whole. At the same time, a vertical slot 4 is vertically opened inside the left side of the filter cylinder 1, and the fixed block 2-3 is stuck in the slot 4. The filter plate 2 moves up and down under the action of the cam 7-1. At this time, the fixed block 2-3 can also slide up and down in the slot 4. Since the fixed block 2-3 is slidably connected in the slot 4, the filter plate 2 can slide vertically up and down during the movement, thereby preventing the filter plate 2 from tilting during the up and down reciprocating movement.

[0040] Two oppositely arranged extension rods 2-1 are respectively arranged on the front and rear sides of the filter plate 2. Figure 1 As shown, the extension rod 2-1 extends outward from the filter cartridge 1, and at the same time, a slide groove 8 is provided on the surface of the filter cartridge 1 for the extension rod 2-1 to slide up and down. Figure 2 As shown, when the motor fails to power on or the cam 7-1 is damaged, causing the filter plate 2 to be unable to move up and down, a large amount of impurities accumulate on the surface of the filter plate 2. At this time, a person manually pushes the extension rod 2-1 up and down intermittently to move in the slide groove 8, so that the impurities remaining on the top surface of the filter plate 2 can fall to the right side of the filter plate 2 and then be discharged through the sewage pipe 6.

[0041] The sealing plate 6-1 is a float valve. The float 1-1 of the sealing plate 6-1 is set on the inner wall of the filter cartridge 1. Under normal conditions, the water in the filter cartridge 1 is always at a normal liquid level. At this time, the float 1-1 will control the sealing plate 6-1 to be in a normally open state, and the impurities on the surface of the filter plate 2 will enter the sewage pipe 6 through the opening and closing of the sealing plate 6-1; and when the drain port 5 at the bottom of the filter cartridge 1 is blocked or the drainage is not smooth, the float 1-1 will float up, and then control the sealing plate 6-1 to close the sewage pipe 6, to prevent water from flowing out of the sewage pipe 6, so that the filtered water will become dirty again. Secondly, after the staff finds that the sealing plate 6-1 is in a closed state, it is necessary to turn off the cooling water, stop the cooling water from entering the filter cartridge 1, and inspect the drain port 5.

[0042] The specific implementation process is as follows:

[0043] Cooling water enters the filter cartridge 1 from the water inlet 3 of the filter cartridge 1, and the cooling water filters out impurities through the filter plate 2. At this time, the motor drives the cam 7-1 to rotate intermittently, and the impurities on the surface of the filter plate 2 are shaken off to the right side of the filter plate 2. As the filter plate 2 moves up and down, during the movement of the filter plate 2, when the surface of the filter plate 2 coincides with the sewage pipe 6, the impurities on the surface of the filter plate 2 will slide into the sewage pipe 6, thereby realizing indirect sewage discharge.

[0044] The filtered cooling water is discharged to the softening treatment equipment through the drain port 5 at the bottom of the filter cartridge 1 for softening, and is pumped through the circulation device for cooling in the production of composite pipes.

[0045] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A filtering device for circulating water for production, comprising a filter cartridge for filtering impurities in hard water, characterized in that: The top and bottom of the filter cartridge are respectively provided with a water inlet and a drain outlet, and the drain outlet at the bottom of the filter cartridge is connected to the soft water treatment equipment. A filter plate for filtering impurities in hard water and capable of reciprocating vibration is horizontally arranged in the filter cartridge, and a sewage pipe for discharging impurities on the surface of the filter plate is opened on one side of the filter cartridge.

2. A filtering device for circulating water for production according to claim 1, characterized in that: The filter plate is inclined toward one side of the sewage pipe, and a support rod is vertically connected to the bottom end of the filter plate. A telescopic cylinder is vertically fixed to the inner bottom of the filter cylinder. The support rod is slidably connected in the telescopic cylinder. A cam is installed inside the telescopic cylinder. The middle part of the cam is connected to a power shaft that extends to the outside of the filter cylinder and is connected to the motor.

3. A filtering device for circulating water for production according to claim 1, characterized in that: An extension rod extending toward the outside of the filter cartridge is fixed on the side of the filter plate, and a sliding groove for the extension rod to slide up and down is provided on the outer wall of the filter cartridge.

4. A filtering device for circulating water for production according to claim 1, characterized in that: A movable sealing plate is arranged on one side of the sewage discharge pipe close to the filter cartridge.

5. A filtering device for circulating water for production according to claim 1, characterized in that: A fixing block is horizontally arranged on one side of the filter plate away from the sewage pipe, and a vertical slot for the fixing block to be inserted is vertically opened inside the filter cartridge, and the fixing block is slidably connected in the slot.

6. A filtering device for circulating water for production according to claim 1, characterized in that: A water injection hole is provided on the top surface of one side of the sewage pipe close to the sealing plate.

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