SU1510873A1 - Model filter - Google Patents

Abstract

The invention can be used in the chemical and polymer industries to study the effect of filter element vibration and pressure pulsation on the filtration of various liquids and suspensions. The purpose of the invention is to reduce energy costs and improve the accuracy of experimental studies. The model filter includes a housing with inlet and outlet nozzles and a filter septum located therein, which is connected by rods with vibration drives. The filter is provided with a bellows, by means of which the filter septum is fixed to the housing, and an inlet pipe located at the entrance to the filter septum. The pipe is connected to a vibro-drive perpendicular vibration displacements and a flexible hose with an inlet pipe. The housing communicates with a source of compressed gas, the pipe is located inside the housing. The filter partition is sandwiched between the lower and upper collars and the O-rings. The body consists of lower, middle and upper parts. The housing communicates with the outlet adapter pipe. The housing is equipped with fittings for measuring the pressure at the inlet and outlet from the filter septum, as well as a fitting for supplying compressed air to the middle of the housing. The pipe and the upper part of the housing are equipped with inductive type sensors. A pulsator can be connected to the inlet. 1 il.

Description

The invention relates to the filtration of liquids, namely, the design of experimental filters for studying the effects of transverse and longitudinal vibration of a filter element and flow pulsations on the filtration of liquids, polymer solutions, suspensions.

The purpose of the invention is to reduce energy costs and improve the accuracy of experimental studies.

The drawing shows the design of a model filter.

The model filter includes a housing 1 with inlet and outlet nozzles 2 and 3 and

located in it a filter septum 4 connected by rods 5 and 6 with vibration drives 7 and 8 located outside the housing, the direction of the vibrations of one 7 of which are parallel and the other 8 perpendicular to the surface of the filter septum 4. The filter is equipped with a bellows 9 installed a pipe 3, on which the filter partition 4 is fixed, and an inlet pipe 10 located at the inlet 11 to the filter partition 4, the pipe 10 being connected to a vibro-drive of perpendicular vibration mixes and a flexible hose 12 sec. x dnym pat00

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The logging unit 2, while the housing 1 communicates with a source (not shown) of the compressed gas, and the pipe 10 is located inside the housing 1. The filter partition 4 is clamped between the lower and upper collars 13 and 14 and the sealing rings 15. The housing 1 consists of the lower, middle and upper parts 16-18. A ring 19 is installed between the lower (16) and middle (17) parts of the housing 1, against which a pipe 10 is sealed by means of the cuff 20. A flange 21 is fixed between the middle (17) and upper (18) parts of the housing 1, in turn between the flange 21 and the upper part 18 of the housing 1 clamped ring 22, sealed by a seal 23. The housing 1 is in communication with the outlet nozzle 3 transition pipe 24 with a length of 5-6 its diameters. The rod 6 is connected to the vibrodrive 8 through a transition sleeve 25. The filter housing 1 is mounted on frame 26. The housing 1 is equipped with fittings 27 and 28 for measuring pressure at inlet 11 and outlet from the filter septum 4, fitting 29 for supplying compressed air to the middle part 17 of the housing 1. The pipe 10 and the upper part 18 of the housing 1 are provided with sensors 30 and 31 of the inductive type for measuring the pulsating pressure. The fitting 28 communicates with the pipe 10 by the flexible hose 32. The stem 5 is sealed by the gland 33 and has at the end of the nozzles 34 for contact with the ring 13. A pulsator 35 can be connected to the inlet 2.

The tests on the model filter are carried out as follows.

The filtered liquid through the inlet 2 and the flexible hose 12 is fed into the inlet pipe 10, passes the filter septum 4, the bellows 9 and through the pipe 24 goes into the outlet nozzle 3. The pipe 10 has a length of at least 8-10 its diameters and the pipe diameter is the diameter of the filter septum 4. Due to this, at the inlet 11 to the filter septum 4, the liquid has a fully formed and established velocity profile. Since the flow resistance and filtering properties of the partition 4 depend on the condition of the flow entry into the partition 4, performing the tests on the described filter ensures that the test conditions are identical and improves the accuracy of determining the hydraulic and filter characteristics of the filter material. The vibration to the pipe 10 is transmitted through the rod 6, which is made fork-shaped. In this case, the pipe 10, together with the clips 13 and 14 with the partition mounted in them, oscillates on the bellows 9. Air is supplied to the middle part 17 of the housing 1 (liquid can also be supplied

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bone) with a pressure equal to the pressure at the outlet of the filter septum (pressure is measured through fitting 27 or sensor 31). This allows the pipe 10 and the bellows 9 to be made thin-walled, and therefore light and the bellows 9 flexible. In addition, the bellows 9 is not loaded with pressure, due to which its stiffness can increase, and thus maintains its original stiffness.

All this. significantly reduces the required vibrations, and hence the energy consumption, power, weight and dimensions of the vibrodrive. The transverse vibration is transmitted through the rod 5 and the tip 34 with a semicircular head, which contacts the sleeves 13 and 14. When the pressure difference on the partition 4 increases, the bellows 9 is compressed and the sleeves 13 and 14 move freely relative to the contact 34 with them. of sufficient length, it is possible to transversely oscillate the pipe 10 in the cuff 20 within certain limits. Fittings 27 and 28 and sensors 30 and 31 are designed to measure averaged and pulsating pressure. The clutch 25 allows to compensate for inaccuracies of installation and provides the connection of the vibrodrive 8 with the brush 6 without effort.

The invention allows to reduce the energy consumption, weight and dimensions of the vibration drives, to increase the measurement accuracy during tests and scientific research. The design is easy to use, for installation and disassembly.

Claims (1)

Invention Formula A model filter comprising a housing with inlet and outlet nozzles and a filter septum located therein, connected by rods with vibration drives, the direction of vibration of one of which is parallel and the other perpendicular to the surface of the filter partition, in order to reduce energy costs and improve accuracy experimental studies, the filter is provided with a bellows installed in the case in front of the outlet pipe, on which the filter partition is fixed, and ennoy within the housing before the filter wall lead-pipe connected to vibroprivody vibrosmescheny and perpendicular to the inlet, wherein the housing communicates with a source of pressurized gas and the service pipe connected to the inlet pipe by a flexible element. Measuring Air diving Damer Dadleni G breathing Vibration direction DME