Filter screen assembly convenient to replace and water ring vacuum pump

Abstract

The utility model belongs to the technical field of water ring vacuum pumps, particularly relates to a filter screen assembly convenient to replace and a water ring vacuum pump, and aims to solve the problems of high filter screen replacement difficulty and short service life in the background technology. The following scheme is provided: the filter screen assembly comprises a filter bin, and connecting columns which are symmetrically distributed are welded on the outer wall of the top of the filter bin; and a top plate is fixedly connected between the two connecting columns. Fluid enters the water inlet pipe and then passes through the filter bin, impurities in the fluid can be filtered out through the filter screen in the filter plate, a new filter plate can be pushed into the filter bin by pushing the lifting switching plate through the air cylinder, rapid replacement of the filter screen is achieved, and the filter screen is rapid, convenient and low in difficulty; water flow is conveyed into the back-flushing spray head through the back-flushing pipe, back-flushing can be carried out on the filter screen, sewage can be discharged through the sewage discharge pipe, the service life of the filter plate in the filter bin is prolonged, and the replacement period of the filter plate is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to water ring vacuum pump technical field especially relates to a filter screen subassembly and water ring vacuum pump convenient to replace. BACKGROUND

[0002] Water ring vacuum pump is a rough vacuum pump, and its working principle is that water (or other liquid) is thrown to the stator wall by an eccentric rotor with fixed blades to form a liquid ring concentric with the stator. This liquid ring and rotor blades together constitute a variable volume, thereby realizing the effect of vacuumizing.

[0003] Water ring vacuum pump needs to transport fluid in the process of working, but there will be a part of impurities in some fluids, in order to filter the impurities, it is necessary to install filter screen, and the conventional filter screen mounting structure adopts closed mounting, the filter screen is usually arranged in the inside of water ring vacuum pump water inlet pipeline side, the replacement of filter screen is difficult, and the service life is short, and the filtering effect will be reduced in a short time. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a filter screen subassembly and water ring vacuum pump convenient to replace, overcomes the defects of the prior art, and effectively solves the problems of great difficulty in replacing filter screen and short service life.

[0005] In order to realize the above object, the utility model adopts the following technical scheme:

[0006] A filter screen subassembly and water ring vacuum pump convenient to replace, including filter bin, the filter bin top outer wall is welded with the connection column of symmetry distribution, and the two connection columns are fixedly connected with the top plate, the top plate top outer wall is fixedly connected with the air cylinder through the screw, and the air cylinder piston rod is fixedly connected with the lifting switch plate, the lifting switch plate is placed with the filter plate of symmetry distribution in the inside;

[0007] The both sides of the filter bin are respectively provided with rear connecting pipe and front connecting pipe, and the rear connecting pipe inner wall is welded with backflush pipe, one end of the backflush pipe outer wall is fixedly connected with backflush nozzle, and the front connecting pipe bottom outer wall is welded with the blowdown pipe with sealing plug.

[0008] Preferably, the filter bin is internally provided with a filter port, and the filter port size is adapted to the filter screen size of the filter plate.

[0009] Preferably, the lifting switch plate one side outer wall is provided with the guide slot of symmetry distribution, and the filter plate is slidingly connected on the inner wall of the guide slot.

[0010] Preferably, the front connecting pipe one end outer wall is fixedly connected with the water inlet pipe through the flange, and the rear connecting pipe one end outer wall is fixedly connected with the water inlet pipe through the flange.

[0011] A water ring vacuum pump, the outer wall of one end of the water inlet pipe is provided with the water ring vacuum pump.

[0012] Preferably, the water outlet of the water ring vacuum pump is fixedly connected with a drain pipe through a flange.

[0013] The utility model discloses a beneficial effect is:

[0014] 1, the filter screen assembly and water ring vacuum pump of this design convenient to replace, fluid enters the water inlet pipe and will pass through the filter bin, utilize the filter screen in the filter plate can filter the impurity in the fluid, and through the air cylinder promotes the lift switch board to be able to push the new filter plate into the filter bin, realizes the quick replacement of filter screen, fast and convenient, low difficulty.

[0015] 2, the filter screen assembly and water ring vacuum pump of this design convenient to replace, when the backflush pipe is connected to water, through the backflush pipe to the backflush nozzle water flow is transported, can be backflushed to the filter screen, and sewage can be discharged through the blowdown pipe, prolongs the service life of the filter plate in the filter bin, reduces the replacement period of filter plate. DRAWINGS

[0016] Figure 1 The utility model proposes a kind of filter screen assembly and water ring vacuum pump of overall structure schematic diagram convenient to replace;

[0017] Figure 2 The utility model proposes a kind of filter bin connecting structure schematic diagram of filter screen assembly and water ring vacuum pump convenient to replace;

[0018] Figure 3 The utility model proposes a kind of filter bin split structure schematic diagram of filter screen assembly and water ring vacuum pump convenient to replace;

[0019] Figure 4 The utility model proposes a kind of lift switch board and filter plate separation structure schematic diagram of filter screen assembly and water ring vacuum pump convenient to replace.

[0020] In the drawing: 1, filter bin;2, connecting column;3, top plate;4, air cylinder;5, lift switch board;6, filter plate;7, rear connecting pipe;8, backflush pipe;9, backflush nozzle;10, front connecting pipe;11, blowdown pipe;12, filter port;13, guide slot;14, water inlet pipe;15, water inlet pipe;16, water ring vacuum pump;17, drain pipe. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Embodiment one, refer to Figures 2-4 A filter screen assembly convenient to replace, comprising a filter bin 1, symmetrically distributed connecting columns 2 are welded on the outer wall of the top of the filter bin 1, a top plate 3 is fixedly connected between the two connecting columns 2, a gas cylinder 4 is fixedly connected on the outer wall of the top of the top plate 3 through screws, a lifting switching plate 5 is fixedly connected on the piston rod of the gas cylinder 4, and symmetrically distributed filter plates 6 are placed in the lifting switching plate 5.

[0023] In the embodiment, after the fluid enters the water inlet pipe 14, the impurities in the fluid can be filtered out by the filter screen inside the filter plate 6, and the new filter plate 6 can be pushed into the filter bin 1 by the lifting switching plate 5 pushed by the gas cylinder 4, so that the filter screen can be quickly replaced, which is convenient and low in difficulty.

[0024] Embodiment two, refer to Figures 2-3 A filter screen assembly convenient to replace, the filter bin 1 is provided with a rear connecting pipe 7 and a front connecting pipe 10 on the two sides respectively, a backflush pipe 8 is welded on the inner wall of the rear connecting pipe 7, a backflush nozzle 9 is fixedly connected on the outer wall of one end of the backflush pipe 8, and a blowdown pipe 11 with a sealing plug is welded on the outer wall of the bottom of the front connecting pipe 10.

[0025] In the embodiment, when the backflush pipe 8 is connected to water, water flow can be transported to the backflush nozzle 9 through the backflush pipe 8, so that the filter screen can be backflushed, and sewage can be discharged through the blowdown pipe 11, thereby prolonging the service life of the filter plate 6 inside the filter bin 1 and reducing the replacement cycle of the filter plate 6.

[0026] Refer to Figures 3-4 The filter bin 1 is provided with a filter port 12, and the size of the filter port 12 is matched with the size of the filter screen of the filter plate 6.

[0027] Refer to Figure 4 A lifting switching plate 5 is provided with symmetrically distributed guide grooves 13 on the outer wall of one side, and the filter plate 6 is slidingly connected on the inner wall of the guide groove 13.

[0028] Refer to Figures 1-2 The front connecting pipe 10 is fixedly connected with a water inlet pipe 14 on one end through a flange, and the rear connecting pipe 7 is fixedly connected with a water inlet pipe 15 on one end through a flange.

[0029] Refer to Figure 1 A water ring vacuum pump 16 is installed on one end of the water inlet pipe 15.

[0030] Refer to Figure 1 A drain pipe 17 is fixedly connected with the water outlet of the water ring vacuum pump 16 through a flange.

[0031] Working principle: fluid into the water pipe 14 will be through the filter bin 1, using the filter screen inside the filter plate 6 can filter out the impurities in the fluid, when the backflush pipe 8 access to water, through the backflush pipe 8 to the backflush nozzle 9 water delivery, can be against the filter screen backwash, thereby prolonging the service life of the filter plate 6 inside the filter bin 1, in the replacement of filter plate 6, through the cylinder 4 push lift switch plate 5 can be the new filter plate 6 into the filter bin 1, complete the filter screen replacement, and sewage can be through the sewage pipe 11 away.

[0032] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled in the art within the technical range disclosed by the present application, according to the technical scheme of the present application and the utility model concept, equivalent replacement or change, should be covered within the protection scope of the present application.

Claims

1. A replaceable filter assembly, comprising a filter chamber (1), characterized in that, The filter chamber (1) has symmetrically distributed connecting columns (2) welded to the top outer wall, and a top plate (3) is fixedly connected between the two connecting columns (2). A cylinder (4) is fixedly connected to the top outer wall of the top plate (3) by screws, and a lifting switching plate (5) is fixedly connected to the piston rod of the cylinder (4). A symmetrically distributed filter plate (6) is placed inside the lifting switching plate (5). The filter chamber (1) is provided with a rear pipe (7) and a front pipe (10) on both sides respectively. A backflush pipe (8) is welded to the inner wall of the rear pipe (7). A backflush nozzle (9) is fixedly connected to the outer wall of one end of the backflush pipe (8). A drain pipe (11) with a sealing plug is welded to the bottom outer wall of the front pipe (10).

2. The filter assembly for easy replacement according to claim 1, characterized in that, The filter chamber (1) is provided with a filter port (12), and the size of the filter port (12) is adapted to the size of the filter screen of the filter plate (6).

3. The replaceable filter assembly according to claim 1, characterized in that, The lifting switching plate (5) has symmetrically distributed guide grooves (13) on one side of its outer wall, and the filter plate (6) is slidably connected to the inner wall of the guide groove (13).

4. The replaceable filter assembly according to claim 1, characterized in that, The outer wall of one end of the front connector (10) is fixedly connected to the water inlet pipe (14) via a flange, and the outer wall of one end of the rear connector (7) is fixedly connected to the water inlet pipe (15) via a flange.

5. A water ring vacuum pump, applied to the filter assembly according to any one of claims 1-4, characterized in that, A water ring vacuum pump (16) is installed on the outer wall of one end of the water inlet pipe (15).

6. A water ring vacuum pump according to claim 5, characterized in that, The outlet of the water ring vacuum pump (16) is fixedly connected to a drain pipe (17) via a flange.

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