Liquid positive pressure filter

Abstract

The utility model discloses a liquid positive pressure filter which comprises a filter cartridge, a filter disc seat, a driving motor and a filter pressing assembly located on the inner side of the filter cartridge, the driving motor is fixedly installed on the top face of the filter cartridge, the output end of the driving motor is fixedly connected with a main shaft rod, and a bearing seat connected to the surface of the main shaft rod in a sleeved mode is arranged on the inner side of the filter cartridge. The surface of the main shaft rod is fixedly sleeved with an inclined pressing disc, a liquid inlet hole is formed in the surface of the filter cartridge, and the filter pressing assembly comprises a liquid passing disc, a flow guide disc and a plurality of piston rods. According to the utility model, the novel plunger type positive-pressure filtering structure is arranged, and the plurality of piston rods are used for reciprocating under the rotary pressing of the inclined pressing disc and the return driving of the return spring, so that fluid is pressurized through the plunger movement of the piston rods and passes through the filtering disc seat to be subjected to positive-pressure filtering; the structural size is small and can be connected with a fluid pipeline structure for continuous filtering work.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a liquid positive pressure filter. Background Art

[0002] There are two main types of existing liquid positive pressure filters. One is to pressurize and transport the liquid through the filter assembly for filtration through a water pump or other structure, and the other is a water storage filter group, that is, to pass the water into a pressure vessel and use the reduction of the internal volume of the container to increase the hydraulic pressure, so that the liquid can be discharged after passing through the filter. The first type of filter is usually limited by the flow and pressure of the water pump, so it may be limited in terms of flow volume and pressure. Especially when dealing with liquids with more impurities or high viscosity liquids, the flow volume and pressure may not be enough to meet the requirements, affecting the filtration efficiency; the second type of water storage filter can generate a large pressure, but due to its low efficiency, the fluid needs to go through multiple steps such as filling and filter pressing, and the filtration efficiency is low. In particular, it may take a long time to process a large amount of liquid, and the water storage filter requires a large pressure vessel to store the water, and uses the reduction of the internal volume of the container to generate pressure, which may lead to a large size of the equipment and occupy more space. In view of this, the existing problems are studied and improved, and a liquid positive pressure filter is provided to solve the current problems, aiming to achieve the purpose of solving the problems and improving the practical value through this technology. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted by the utility model is: a liquid positive pressure filter, comprising: a filter cartridge, a filter disc seat, a driving motor and a filter press assembly located inside the filter cartridge, the driving motor is fixedly installed on the top surface of the filter cartridge and the output end is fixedly connected to the main shaft rod, the inner side of the filter cartridge is provided with a bearing seat sleeved on the surface of the main shaft rod, the surface of the main shaft rod is fixedly sleeved with an inclined pressure plate, the surface of the filter cartridge is provided with a liquid inlet hole, the filter press assembly comprises a liquid passing tray, a guide tray and a plurality of piston rods, the surface of the liquid passing tray is provided with a plurality of plunger tubes, the surface of the piston rod is provided with a return spring, and the surface of the piston rod is provided with a liquid inlet groove located at one end of the plunger tube, the filter disc seat is detachably installed on the bottom end of the filter cartridge and the top surface is in contact with the bottom surface of the guide tray.

[0005] In a preferred example, the utility model can be further configured as follows: the inclined pressure plate is disc-shaped and its axis is inclined to the main shaft rod; a rotating wheel ring is rotatably mounted on the bottom surface of the inclined pressure plate, and the rotating wheel ring is movably connected to the top end of the piston rod.

[0006] In a preferred example, the utility model can be further configured as follows: a plurality of beads are fixedly mounted on the bottom surface of the rotating wheel ring, and a ball head groove matched with the beads is provided on the top surface of the piston rod.

[0007] In a preferred example, the utility model can be further configured as follows: the top end of the piston rod is provided with a stop edge that fits the surface of the return spring, the surface of the piston rod is provided with a piston ring that matches the inner side of the plunger tube, and the liquid inlet groove is located below the piston ring.

[0008] In a preferred example, the utility model can be further configured as follows: the piston rods and the plunger tubes are arranged one by one and are evenly arranged in the circumferential direction.

[0009] In a preferred example, the utility model can be further configured as follows: a plurality of liquid passage cavities connected to the plunger tubes are provided on the inner side of the guide plate, and the inner diameter of the liquid passage cavities gradually expands along the direction from the plunger tube to the filter plate seat.

[0010] In a preferred example, the utility model can be further configured as follows: the filter disc seat is a multi-layer filter screen structure, and the outer periphery of the filter disc seat is provided with a flange ring connected to the bottom end of the filter cartridge.

[0011] The beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, a new plunger-type positive-pressure filtration structure is provided, and multiple piston rods are used to reciprocate under the rotation pressure of the inclined pressure plate and the return drive of the return spring, so that the fluid is pressurized through the filter disc seat by the plunger movement of the piston rod to perform positive-pressure filtration. The structure is small in size and can be connected to the fluid pipeline structure for continuous filtration.

[0013] 2. In the utility model, the rotational transmission kinetic energy of the driving motor is converted into the plunger movement kinetic energy of multiple piston rods through the rotational movement of the inclined pressure plate, providing a larger hydraulic pressure for the fluid to pass through the filter disc seat surface, thereby achieving viscous fluid or other fluid with dense impurity content. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0017] Figure 4 The figure is a schematic diagram of the piston rod structure of an embodiment of the utility model.

[0018] Reference numerals:

[0019] 100, filter cartridge; 110, liquid inlet hole; 120, bearing seat; 130, main shaft rod; 140, inclined pressure plate; 141, rotating wheel ring;

[0020] 200, filter disc seat; 300, drive motor;

[0021] 400, filter press assembly; 410, liquid passing tray; 420, guide plate; 430, piston rod; 411, plunger tube; 431, return spring; 432, stopper ball; 433, liquid inlet tank. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] A liquid positive pressure filter provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0024] Combination Figure 1-4 As shown, the utility model provides a liquid positive pressure filter, comprising: a filter cartridge 100, a filter disc seat 200, a drive motor 300 and a filter press assembly 400 located inside the filter cartridge 100, the drive motor 300 is fixedly mounted on the top surface of the filter cartridge 100 and the output end is fixedly connected to a main shaft rod 130, the inner side of the filter cartridge 100 is provided with a bearing seat 120 sleeved on the surface of the main shaft rod 130, the surface of the main shaft rod 130 is fixedly sleeved with an inclined pressure plate 140, and the filter cartridge A liquid inlet hole 110 is provided on the surface of 100, and the filter press assembly 400 includes a liquid passing tray 410, a guide tray 420 and a plurality of piston rods 430. A plurality of plunger tubes 411 are provided on the surface of the liquid passing tray 410, a return spring 431 is provided on the surface of the piston rod 430, and a liquid inlet groove 433 located at one end of the plunger tube 411 is provided on the surface of the piston rod 430. The filter disc seat 200 can be detachably installed on the bottom end of the filter cartridge 100 and the top surface is in contact with the bottom surface of the guide tray 420.

[0025] In this embodiment, the inclined pressure plate 140 is disc-shaped and its axis is inclined relative to the main shaft 130 . A rotating wheel ring 141 is rotatably mounted on the bottom surface of the inclined pressure plate 140 . The rotating wheel ring 141 is movably connected to the top end of the piston rod 430 .

[0026] Furthermore, a plurality of beads 432 are fixedly mounted on the bottom surface of the rotating wheel ring 141 , and a ball head groove matched with the beads 432 is provided on the top surface of the piston rod 430 .

[0027] Specifically, the rotating ring 141 and the piston rod 430 are relatively restrained and slidably fitted with the bottom surface of the inclined pressure plate 140 to reduce friction resistance, and the ball head connection structure of the stop ball 432 and the piston rod 430 is used to achieve movable connection in various directions.

[0028] In this embodiment, the top of the piston rod 430 is provided with a stop edge that fits with the surface of the return spring 431, the surface of the piston rod 430 is provided with a piston ring that matches the inner side of the plunger tube 411, and the liquid inlet groove 433 is located below the piston ring.

[0029] Specifically, the piston rod 430 is used to move the plunger inside the plunger tube 411 to pressurize the fluid, and after the liquid inlet groove 433 is exposed outside the top end of the plunger tube 411, the liquid introduction work is performed.

[0030] In this embodiment, the piston rod 430 and the plunger tube 411 are arranged one by one and evenly in the circumferential direction.

[0031] Specifically, multiple piston rods 430 are used to inject and pressurize liquid during the rotation of the inclined pressure plate 140, thereby achieving continuous transportation and pressurized filtration and improving work efficiency.

[0032] In this embodiment, a plurality of liquid passage cavities connected to the plunger tube 411 are provided on the inner side of the guide plate 420 , and the inner diameter of the liquid passage cavities gradually expands along the direction from the plunger tube 411 to the filter plate seat 200 .

[0033] In this embodiment, the filter disc seat 200 is a multi-layer filter screen structure, and the outer periphery of the filter disc seat 200 is provided with a flange ring connected to the bottom end of the filter cartridge 100 .

[0034] The working principle and use process of this utility model:

[0035] The liquid positive pressure filter is connected to the liquid pipeline, and the liquid to be filtered enters through the liquid inlet hole 110. Under the drive of the driving motor 300, the main shaft rod 130 rotates and drives the inclined pressure plate 140 to rotate. The inclined inclined pressure plate 140 rotates, so that the piston rod 430 in the rotation direction moves downward under the push of the rotating ring 141 to provide liquid pushing pressure, and the inclined pressure plate 140 rotates through the return spring 431 on the outside of the piston rod 430 to elastically restore, so that the piston rod 430 is guided to the outside of the liquid pan 410. After the liquid inlet groove 433 is exposed and enters the fluid into the inside of the plunger tube 411, the inclined pressure plate 140 rotates to press the piston rod 430 again. The liquid in the plunger tube 411 passes through the guide plate 420 and the filter plate seat 200 under the downward movement of the piston rod 430 to achieve filtration; the filter plate seat 200 can be disassembled to replace filter screens of different specifications or perform maintenance and cleaning work.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A liquid positive pressure filter, characterized in that: include: A filter cartridge (100), a filter disc seat (200), a drive motor (300), and a filter press assembly (400) located inside the filter cartridge (100), wherein the drive motor (300) is fixedly mounted on the top surface of the filter cartridge (100) and an output end thereof is fixedly connected to a main shaft rod (130), a bearing seat (120) sleeved on the surface of the main shaft rod (130) is provided on the inside of the filter cartridge (100), an inclined pressure disc (140) is fixedly sleeved on the surface of the main shaft rod (130), and a liquid inlet hole (120) is provided on the surface of the filter cartridge (100). 110), the filter press assembly (400) comprises a liquid passing tray (410), a guide tray (420) and a plurality of piston rods (430); a plurality of plunger tubes (411) are provided on the surface of the liquid passing tray (410); a return spring (431) is provided on the surface of the piston rod (430); and a liquid inlet groove (433) is provided on the surface of the piston rod (430) at one end of the plunger tube (411); the filter tray seat (200) is detachably mounted on the bottom end of the filter cartridge (100) and its top surface is in close contact with the bottom surface of the guide tray (420).

2. A liquid positive pressure filter according to claim 1, characterized in that: The inclined pressure plate (140) is in the shape of a disk and its axis is inclined relative to the main shaft rod (130). A rotating wheel ring (141) is rotatably mounted on the bottom surface of the inclined pressure plate (140), and the rotating wheel ring (141) is movably connected to the top end of the piston rod (430).

3. A liquid positive pressure filter according to claim 2, characterized in that: A plurality of stop beads (432) are fixedly mounted on the bottom surface of the rotating wheel ring (141), and a ball head groove matching the stop beads (432) is provided on the top surface of the piston rod (430).

4. A liquid positive pressure filter according to claim 1, characterized in that: The top end of the piston rod (430) is provided with a stop edge that fits with the surface of the return spring (431), the surface of the piston rod (430) is provided with a piston ring that fits with the inner side of the plunger tube (411), and the liquid inlet groove (433) is located below the piston ring.

5. A liquid positive pressure filter according to claim 1, characterized in that: The piston rods (430) and the plunger tubes (411) are arranged in one-to-one correspondence and are evenly arranged in the circumferential direction.

6. A liquid positive pressure filter according to claim 1, characterized in that: A plurality of liquid passage cavities in communication with the plunger tube (411) are provided on the inner side of the guide plate (420), and the inner diameter of the liquid passage cavities gradually expands in the direction from the plunger tube (411) to the filter plate seat (200).

7. A liquid positive pressure filter according to claim 1, characterized in that: The filter disc seat (200) is a multi-layer filter screen structure, and the outer periphery of the filter disc seat (200) is provided with a flange ring connected to the bottom end of the filter cartridge (100).

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