Water pump front-mounted adjustable filtering device capable of chopping stuck sundries

Abstract

The utility model relates to a water pump front-mounted adjustable filtering device capable of chopping stuck sundries. In order to fill the blank in the prior art, the water pump front-mounted adjustable filtering device capable of cutting up the clamped impurities comprises a filter plate and a blow-off pipe which are arranged in a water suction pipe, the filter plate comprises a fixed filter plate and a movable filter plate which are circular, the water suction pipe is fixedly connected with a gate-type fixing frame, a rotatable nut is arranged in the middle of the gate-type fixing frame, a hand wheel is connected to the nut, and the blow-off pipe is connected with the fixed filter plate and the movable filter plate. A screw rod penetrates through the center of the nut, a short pipe is arranged on the pipe wall, right opposite to the screw rod, of the water suction pipe, external threads are arranged on the short pipe, the short pipe is provided with a sealing ring and a sealing cap, the inner end of the screw rod penetrates through the sealing cap, the sealing ring and the short pipe and then is directly or indirectly connected to the movable filter plate, the fixed filter plate is perpendicularly fixed to the inner wall of the water suction pipe, and the fixed filter plate and the movable filter plate are attached to each other. According to the utility model, coal dust and coal slag particles clamping the filter plate can be cut into pieces and discharged under the condition that water flow is not stopped, and the device is convenient to use and suitable for underground drainage of a coal mine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water pump front adjustable filter device capable of chopping and filtering sundries. BACKGROUND

[0002] During the operation of the coal mine water pump, the cage head of the centrifugal water pump suction pipe can filter large pieces of coal gangue and wooden wedge and other sundries, but the coal mine water contains a large amount of coal dust and coal cinder particles and other impurities, in order to reduce the wear of the particles on the water pump and the pipeline, a detachable filter screen or filter plate is usually installed in the suction pipe, a blow-off pipe is also installed on the upstream suction pipe of the detachable filter screen or filter plate, and a blow-off valve or detachable flange sealing plate is installed on the blow-off pipe.

[0003] After the centrifugal water pump works for a period of time, the water drainage is not smooth or the suction of the suction pipe is insufficient, at this time, the particles are gathered in the pipeline upstream of the filter screen or filter plate, and part of the particles are also stuck in the filter holes. The water pump needs to be stopped, the detachable filter screen or filter plate needs to be removed, the particles stuck in the filter holes need to be cleaned, the sundries in the suction pipe upstream of the filter screen or filter plate need to be removed, the detachable filter screen or filter plate needs to be reset, and then the centrifugal water pump can be restarted, which affects the continuous operation of the centrifugal water pump.

[0004] During the operation of the coal mine water pump, it is found that most of the impurities blocked or stuck in front of the filter screen or filter plate are coal dust and coal cinder particles, and the impurities stuck in the filter holes of the filter screen or filter plate are not many, but they can greatly limit the water flow. The existing technology lacks corresponding cleaning means, and the water pump needs to be frequently stopped and switched, and the filter screen or filter plate needs to be disassembled and cleaned.

[0005] The existing technology urgently needs a water pump front adjustable filter device that can clean the coal dust and coal cinder particles stuck in the filter holes without stopping the water flow. SUMMARY

[0006] The utility model solves the technical problems of the above-mentioned gaps in the existing technology and provides a water pump front adjustable filter device capable of chopping and filtering sundries.

[0007] To solve the above technical problems, the water pump front adjustable filter device capable of cutting and removing the sundries can be provided with a filter plate and a drain pipe arranged in the water suction pipe, the filter plate is uniformly provided with filter holes, the drain pipe is arranged on the water suction pipe upstream of the filter plate and is provided with a drain valve or a detachable flange sealing plate, the filter plate includes a fixed filter plate and a movable filter plate, both of which are circular, the water suction pipe is fixedly connected with a door type fixing frame, the middle part of the door type fixing frame is provided with a rotatable screw nut, the screw nut is connected with a hand wheel, the center of the screw nut is provided with a screw rod, the screw rod is opposite to the pipe wall of the water suction pipe and is provided with a short pipe, the short pipe is provided with external threads and is matched with a sealing ring and a sealing cap, the inner end of the screw rod is directly or indirectly connected with the movable filter plate after penetrating through the sealing cap, the sealing ring and the short pipe, the fixed filter plate is vertically fixed on the inner wall of the water suction pipe, the fixed filter plate and the movable filter plate are in close contact with each other, the outer diameter of the movable filter plate is smaller than the inner diameter of the fixed filter plate, all the filter holes of the movable filter plate can be simultaneously opposite to the filter holes of the fixed filter plate, and the hand wheel can be rotated to drive the movable filter plate to move up and down relative to the fixed filter plate through the screw nut and the screw rod. In this way, when it is found that the water pump has reduced discharge capacity or insufficient suction, the hand wheel is only needed to be rotated to drive the movable filter plate to move up and down relative to the fixed filter plate and then reset, so that the particles stuck in the filter holes can be cut to form fine powder or coal slurry, thereby promoting the particles to smoothly pass through the filter plate and be discharged with the water flow.

[0008] As an optimization, the outer edge of the movable filter plate is further connected to one side of an outer ring, the other side of the outer ring is connected with a secondary filter plate, the movable filter plate, the outer ring and the secondary filter plate form a hollow flat cylinder, and the outer ring is provided with a threaded hole, the middle part of the screw rod is a light shaft, the upper part of the screw rod is provided with external threads matched with the screw nut, the lower end of the screw rod is provided with external threads matched with the threaded hole and is rotatably arranged in the threaded hole through the external threads, one side of the outer ring is further provided with a countersunk hole, the countersunk hole is provided with a countersunk screw, the inner end of the countersunk screw can be directly or indirectly pressed on the screw rod, the corresponding position of the inner wall of the water suction pipe is provided with a ring groove, the ring groove includes an arc-shaped part and a ring boss, the outer edge of the side of the fixed filter plate close to the movable filter plate is clamped on the ring boss, the arc-shaped part is clamped with a detachable C-shaped spring, the C-shaped spring abuts the fixed filter plate against the ring boss, and the drain pipe also serves as a maintenance pipe, the inner diameter of the drain pipe is larger than the outer diameter of the fixed filter plate, and the lower end of the drain pipe is provided with a flange plate and a flange sealing plate, the two are connected through bolts or screws.

[0009] The fixed filter plate is fixed through the C-shaped spring, the fixed filter plate, the movable filter plate, the outer ring and the secondary filter plate can pass through the maintenance pipe to enter and exit the water suction pipe, the screw rod is connected in the threaded hole of the outer ring through a screw after extending into the water suction pipe, the countersunk hole is rotatably arranged in the countersunk hole, and the front end of the countersunk screw is directly or indirectly pressed on the screw rod, so that the movable filter plate can be detachably fixed on the lower end of the screw rod. In this way, the design is convenient for maintenance, replacement or cleaning.

[0010] As optimization, the filter holes of the fixed filter plate and the movable filter plate are all trumpet holes, and the large ends of the trumpet holes of the two are outward and the small ends are adjacent.

[0011] The water pump front adjustable filter device capable of cutting and removing the jammed sundries has simple structure, scientific design, can cut and remove the coal dust and coal cinder particles of the jammed filter plate without stopping water flow, is convenient to use, and is suitable for use in coal mine underground drainage. BRIEF DESCRIPTION OF DRAWINGS

[0012] The water pump front adjustable filter device capable of cutting and removing the jammed sundries will be further described below with reference to the drawings:

[0013] Figure 1 is a cross-sectional schematic view of the movable filter plate of the water pump front adjustable filter device capable of cutting and removing the jammed sundries at the upper dead point (cut along the vertical plane of the water suction pipe axis);

[0014] Figure 2 is a use state cross-sectional structure schematic view of the water pump front adjustable filter device capable of cutting and removing the jammed sundries (cut along the vertical plane of the water suction pipe axis) (relative to Figure 1 , the movable filter plate is close to the lower dead point).

[0015] In the figure: 1 is a water suction pipe, 2 is a filter plate, 21 is a fixed filter plate, 22 is a movable filter plate, 23 is an outer ring, 24 is a secondary filter plate, 25 is a countersunk screw, 26 is a rubber block, 3 is a sewage pipe, 4 is a filter hole, 5 is a flange sealing plate, 6 is a door type fixing frame, 7 is a screw nut, 8 is a hand wheel, 9 is a screw rod, 10 is a short pipe, 11 is a sealing ring, 12 is a sealing cap, 13 is an arc-shaped part, 14 is a ring boss, 15 is a C-shaped spring, and 16 is a negative pressure gauge. DETAILED DESCRIPTION

[0016] Embodiment one: as Figure 1 , 2The adjustable filter device in front of the water pump shown in the application can chop the sundries in the water pump, which comprises a filter plate 2 and a drain pipe 3 arranged in the water suction pipe 1. The filter plate 2 is uniformly provided with filter holes 4, and the drain pipe 3 is arranged on the water suction pipe 1 upstream of the filter plate 2 and is provided with a drain valve or a detachable flange sealing plate 5. The filter plate 2 comprises a fixed filter plate 21 and a movable filter plate 22, both of which are circular. The water suction pipe 1 is fixedly connected with a door type fixing frame 6, the middle part of the door type fixing frame 6 is provided with a rotatable nut 7, the nut 7 is connected with a hand wheel 8, the center of the nut 7 is provided with a screw rod 9, the screw rod 9 is opposite to the wall of the water suction pipe 1 and is provided with a short pipe 10, the short pipe 10 is provided with external threads and is matched with a sealing ring 11 and a sealing cap 12, the inner end of the screw rod 9 is directly or indirectly connected with the movable filter plate 22 after penetrating through the sealing cap 12, the sealing ring 11 and the short pipe 10, the fixed filter plate 21 is vertically fixed on the inner wall of the water suction pipe 1, the fixed filter plate 21 and the movable filter plate 22 are close to each other, the outer diameter of the movable filter plate 22 is smaller than the inner diameter of the fixed filter plate 21, all the filter holes 4 on the movable filter plate 22 can be simultaneously opposite to the filter holes 4 on the fixed filter plate 21, and the hand wheel 8 can be rotated to drive the movable filter plate 22 to move up and down relative to the fixed filter plate 21 through the nut 7 and the screw rod 9.

[0017] The outer edge of the movable filter plate 22 is further connected with one side of an outer ring 23, the other side of the outer ring 23 is connected with a secondary filter plate 24, the movable filter plate 22, the outer ring 23 and the secondary filter plate 24 form a hollow flat cylinder, the secondary filter plate 24 is also provided with filter holes 4, and the outer ring 23 is provided with threaded holes, the middle part of the screw rod 9 is a light shaft, the upper part of the screw rod 9 is provided with external threads matched with the nut 7, the lower end of the screw rod 9 is provided with external threads matched with the threaded holes and is rotatably arranged in the threaded holes through the external threads, one side of the outer ring 23 is further provided with a countersunk hole, the countersunk hole is provided with a countersunk screw 25, the inner end of the countersunk screw 25 is provided with a rubber block 26, the countersunk screw 25 extrudes the rubber block 26 on the external threads of the screw rod 9, and the screw rod 9 is detachably fixed on the outer ring 23 through the above, the corresponding position of the inner wall of the water suction pipe 1 is provided with a ring groove, the ring groove comprises an arc part 13 and a ring boss 14, the outer edge of the side of the fixed filter plate 21 close to the movable filter plate 22 is clamped on the ring boss 14, the arc part 13 is clamped with a detachable C-shaped spring 15, the C-shaped spring 15 abuts the fixed filter plate 21 on the ring boss 14, the drain pipe 3 is used as a maintenance pipe, the inner diameter of the drain pipe 3 is larger than the outer diameter of the fixed filter plate 21, the lower end of the drain pipe 3 is provided with a flange plate and a flange sealing plate, and the two are connected through bolts or screws. The rubber block 26 can be taken from waste rubber belts, so that the screw rod 9 can be extruded, the relative rotation between the screw rod 9 and the outer ring 23 in the use process can be prevented, and the external threads of the lower end of the screw rod 9 can not be damaged.

[0018] The filter holes 4 of the fixed filter plate 21 and the movable filter plate 22 are all trumpet holes, and the large ends of the trumpet holes are outward and the small ends are adjacent.

[0019] The water suction pipe 1 is provided with flanges at both ends to connect with the water supply pipe and water pump (not shown in the figure). A negative pressure gauge 16 is connected to the water suction pipe 1 upstream of the fixed filter plate 21. When the absolute value of the negative pressure shown by the negative pressure gauge 16 decreases, it indicates that the filter holes 4 are partially blocked. At this time, the hand wheel 8 is rotated to drive the movable filter plate 22 through the nut 7 and the screw rod 9 to move up and down relative to the fixed filter plate 21 for a few times and then reset. This can cut the particles stuck in the filter holes 4 to form fine powder or coal slurry, which can then pass through the filter plate and be discharged with the water flow. Note: In this context, upstream refers to the direction of water flow when the water suction pipe 1 is in operation.

Claims

1. A pre-pump adjustable filter device for cutting up stuck debris, comprising a filter plate and a drain pipe disposed within a suction pipe, wherein the filter plate has uniformly distributed filter holes, and the drain pipe is disposed on the suction pipe upstream of the filter plate and is equipped with a drain valve or a detachable flange sealing plate, characterized in that: The filter plate comprises a fixed filter plate and a movable filter plate, both of which are circular, the water suction pipe is fixedly connected with a door-shaped fixing frame, a rotatable screw nut is arranged in the middle of the door-shaped fixing frame, a hand wheel is connected to the screw nut, a screw rod is arranged in the center of the screw nut, a short pipe is arranged on the wall of the water suction pipe opposite to the screw rod, the short pipe is provided with external threads, and is provided with a sealing ring and a sealing cap, the inner end of the screw rod is directly or indirectly connected to the movable filter plate after penetrating through the sealing cap, the sealing ring and the short pipe, the fixed filter plate is vertically fixed on the inner wall of the water suction pipe, the fixed filter plate and the movable filter plate abut against each other, the outer diameter of the movable filter plate is smaller than the inner diameter of the fixed filter plate, all filter holes on the movable filter plate can be simultaneously opposite to the filter holes on the fixed filter plate, and the hand wheel is rotated to drive the movable filter plate to move up and down relative to the fixed filter plate through the screw nut and the screw rod.

2. The prefilterable debris-fragmentable water pump of claim 1, wherein: The outer edge of the movable filter plate is further connected to one side of an outer ring, the other side of the outer ring is connected with a secondary filter plate, the movable filter plate, the outer ring and the secondary filter plate form a hollow flat cylinder, and a threaded hole is formed in the outer ring, the middle part of the screw rod is a light shaft, the upper part of the screw rod is provided with external threads matched with the screw nut, the lower end of the screw rod is provided with external threads matched with the threaded hole, and the screw rod is rotatably arranged in the threaded hole through the external threads, a countersunk screw hole is further formed in one side of the outer ring, a countersunk screw is arranged in the countersunk screw hole, and the inner end of the countersunk screw can be directly or indirectly pressed on the screw rod, a ring groove is formed in the corresponding position of the inner wall of the water suction pipe, the ring groove comprises an arc-shaped part and a ring boss, the outer edge of one side of the fixed filter plate abutting against the movable filter plate is clamped on the ring boss, a detachable C-shaped spring is clamped in the arc-shaped part, the C-shaped spring abuts the fixed filter plate against the ring boss, and the blowdown pipe also serves as a maintenance pipe, the inner diameter of the blowdown pipe is larger than the outer diameter of the fixed filter plate, the lower end of the blowdown pipe is provided with a flange plate and a flange sealing plate, and the flange plate and the flange sealing plate are connected through bolts or screws.

3. The prefilterable debris-fragmentable water pump of claim 1, wherein: The filter holes of the fixed filter plate and the movable filter plate are all trumpet holes, and the large ends of the trumpet holes of the fixed filter plate and the movable filter plate are outward, and the small ends are adjacent.

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