CN217092317U

CN217092317U - Vacuum pump oil filtering device with spiral squeezer

Info

Publication number: CN217092317U
Application number: CN202220705067.5U
Authority: CN
Inventors: 胥永; 陈雨曈; 赵耀; 于健
Original assignee: CHAOYANG JINDA TITANIUM CO LTD
Current assignee: CHAOYANG JINDA TITANIUM CO LTD
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-02
Anticipated expiration: 2032-03-29

Abstract

The utility model relates to a vacuum pump oil filter equipment with screw squeezer belongs to industry sump oil and filters technical field. The device comprises a trophy cup-shaped tank body and a tank cover, wherein the tank body is fixedly connected with the tank cover, and a closed straight-wall concave filter cavity is arranged in an inner cavity at the upper part of the tank body; an upper backflushing device which is communicated with the interior of the filter cavity is arranged on the tank cover, and an outlet passage which is communicated with the interior of the filter cavity is arranged at the center of the tank cover; an inlet passage and a pressure relief passage are arranged on the side wall of the upper part of the tank body; a pressure relief device is arranged in the pressure relief passage; the side wall of the upper part of the tank body is also provided with a side backflushing device which is communicated with the inner cavity of the tank body; the lower part of the tank body is connected with a ball valve through an upper flange plate, and the lower part of the ball valve is connected with a slag storage tank through a lower flange plate; the lower part of the residue storage tank is provided with a spiral squeezer which consists of a shell of a porous cylinder body and a screw rod sleeved in the shell. According to the invention, the impurity removing mode of air injection is carried out through the back flushing device, and the filter residues adhered to the surface of the filter layer are removed, so that the filtering work can be continuously carried out without influencing the normal oil filtering process and the continuous operation of the main equipment.

Description

Vacuum pump oil filtering device with spiral squeezer

Technical Field

The utility model belongs to the technical field of industry sump oil filters, specifically a vacuum pump oil filter equipment with screw squeezer.

Background

With the wider application development of the metal titanium, the general trend of the titanium sponge industry is to expand the production scale, improve the product quality and reduce the production cost. In the titanium sponge production equipment, the high-performance stable operation of a vacuum system is crucial to the quality of a titanium sponge product; the slide valve type vacuum pump mainly working in the low vacuum rough pumping stage always has the problems that pump oil is seriously polluted and has to be replaced in a large amount in time, so that a large amount of vacuum pump waste oil is generated in the production process of the titanium sponge.

The production process of the waste oil of the slide valve vacuum pump comprises the following steps: the main mass production mode of the titanium sponge is a process route of a magnesium reduction-distillation method, in the process, each reduction and distillation of titanium sponge equipment are accompanied by long-time vacuum pumping operation, metal magnesium and magnesium oxide steam can diffuse and flow in a vacuum passage along with air flow, and although the metal magnesium and magnesium oxide steam is blocked by a cyclone dust collector and a steel wire ball filter, part of the steam still finally reaches a slide valve vacuum pump serving as a rough pumping pump; dust entering the slide valve pump is adhered to and mixed with the vacuum pump oil which plays a role in lubricating and sealing in the pump, and cannot be discharged out of the pump and accumulated in the vacuum pump oil; the pump oil polluted by dust has increased viscosity and contains solid dust particles, the lubricating and sealing performance of the pump oil is poor, the air exhaust performance of the vacuum pump is greatly reduced, and even mechanical faults of dead locking of a slide valve and damage of the vacuum pump can occur. In order to avoid the accidents and ensure the normal operation of the vacuum system, polluted pump oil in the slide valve pump needs to be replaced in time, thereby generating a large amount of waste oil. Meanwhile, the same amount of new vacuum pump oil must be purchased for replacement. The existing sump oil treatment method and device not only have extremely high time cost, but also have extremely low efficiency, so a new oil filter device and method are urgently needed.

Compared with common dust, the dust in the embodiment is smaller and has a large quantity, and particularly after the dust is combined with pump oil, the processing difficulty is greatly improved. Laboratory tests show that the waste oil has high dust content, high viscosity and poor fluidity, and the conventional treatment method can face a plurality of problems, such as a common filtering method, frequent impurity blockage of a filter screen in the actual working process, a common centrifugal method, frequent cleaning in the actual working process due to high solid content of the dirty oil, and the like. The traditional equipment is difficult to operate and maintain, the separated impurities are difficult to treat, and the filtered impurities are high in oil content and viscous. There is an urgent need for an oil filtration apparatus that can operate continuously while dealing with the problem that the filter screen is easily clogged by the filtrate, and that is also applicable to similar situations in other industries. To this current situation, the utility model provides a vacuum pump oil filter equipment for handling titanium sponge industry.

Disclosure of Invention

Problem to prior art existence, the utility model provides a vacuum pump oil filter equipment with dull and stereotyped expresser takes place to strain the stifled problem of dying the filter screen of thing when solving vacuum pump continuous operation, improves work efficiency, reduces oil strain process cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vacuum pump oil filtering device with a screw squeezer comprises a trophy cup-shaped tank body and a tank cover, wherein the tank body is fixedly connected with the tank cover, a closed straight-wall downward concave filter cavity is arranged in an inner cavity at the upper part of the tank body, a filter cavity body is a metal filter screen, a filter cavity top cover is arranged in a clamping groove at the edge of the top of the tank body, and an upward convex limiting block is arranged on the outer side of the filter cavity top cover; the tank cover is provided with a limiting hole matched with the limiting block of the filter cavity, the limiting hole is sleeved on the limiting block, the upper edges of the tank cover and the tank body are both provided with fixing holes, the tank cover is fixedly connected with the tank body through bolts penetrating through the fixing holes, the tank cover is also provided with a guide hole connected with the guide rail, the tank cover is provided with an upper backflushing device communicated into the filter cavity, and the center of the tank cover is provided with an outlet passage communicated into the filter cavity; the side wall of the upper part of the tank body is provided with an inlet passage and a pressure relief passage, and the opening position of the pressure relief passage is higher than that of the inlet passage; a pressure relief device is arranged in the pressure relief passage; the side wall of the upper part of the tank body is also provided with a side backflushing device which is communicated with the inner cavity of the tank body, and the opening position of the side backflushing device is higher than that of the pressure relief passage; the lower part of the tank body is connected with a ball valve through an upper flange plate, and the lower part of the ball valve is connected with a slag storage tank through a lower flange plate; the lower part of the slag storage tank is provided with a spiral squeezer which consists of a shell of a porous cylinder and a screw rod, the screw rod is connected with a motor through a speed changer, and the inner wall of the shell and the outer side of the screw rod are wrapped by metal filter screens.

The metal filter screen consists of an inner metal filter layer, a middle cloth bag filter layer and an outer metal filter layer.

The pressure relief device arranged on the pressure relief passage is provided with a pressure sensor, and the flow can be automatically adjusted according to different working pressure states of the liquid.

The connecting part of the filter cavity and the tank body, the connecting part of the ball valve and the flange plate, and the connecting part of the screw rod of the screw press and the shell of the screw press are all sealed by sealing rings.

The ball valve is fixedly connected with the upper flange plate and the lower flange plate through bolts penetrating through the fixing holes.

The shell of the porous cylinder of the screw press is a cylinder with a uniform cross section.

Preferably, the shell of the multi-hole barrel of the screw squeezer is a cylinder, a liquid outlet is arranged at the lower part of the shell, and a slag discharge port is arranged at the end part of the closed end.

The cover is provided with a handle, and the hook is hung on the handle.

The utility model discloses a recoil device carries out the impurity removal mode of gas injection, will glue the filter residue of gluing on the filter layer surface and clear away, has avoided the drawback that traditional filtration mode exists when handling this type of sump oil for filter work can continue to go on and does not influence normal oil filtration journey, the utility model discloses can not influence the main equipment operation continuous operation. The utility model discloses a recoil device is once only rushed into the sediment jar of depositing in sediment district with the filter residue in filter oil district, close the ball valve afterwards, the oil strain work of ball valve top continues, and the filter residue work of ball valve below also goes on in step, the filter residue in the sediment jar gets into the disengagement zone gradually, press through the flat board and separate out the fluid that gets into the sediment jar along with the filter residue carelessly in the material transportation with the residual with the part fluid in the filter residue, the fluid after the separation will be collected and prepare to drop into oil filtering process again, the secondary treatment to the filter residue will the wasting of resources that significantly reduces. The utility model discloses a higher buildding, piling up this tiling at subaerial different equipment, also make the actual processing route shorter when saving area, avoided the waste of equipment room transmission material, reduced cost, operation cycle and equipment area greatly. The utility model discloses owing to have processes such as filter residue clearance and filter residue secondary treatment, more save time than traditional oil filter method in actual work.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a partial schematic view of FIG. 1;

FIG. 4 is a partial schematic view of FIG. 1;

FIG. 5 is a partial schematic view of FIG. 1;

in the figure, 1-inlet passage, 2-pressure relief device, 3-pressure relief passage, 4-guiding hole, 5-hook, 6-fixing hole, 7-side recoil device, 8-upper recoil device, 9-outlet passage, 10-tank cover, 11-inner metal filter layer, 12-sealing ring, 13-sealing ring, 14-middle cloth bag filter layer, 15-outer metal filter layer, 16-fixing hole, 17-sealing ring, 18-ball valve, 19 a-upper flange, 19 b-lower flange, 20-fixing hole, 21-slag storage tank, 22-screw press shell, 23-metal filter screen, 24-screw press screw, 25-sealing ring, 26-motor, 27-speed changer, 28-sealing ring, 29-tank body, 30-slag discharge port, 31-liquid discharge port.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, the vacuum pump oil filtering device with the screw squeezer comprises a cup-shaped tank body 29 and a tank cover 10, wherein the tank body is fixedly connected with the tank cover, a closed straight-wall lower concave filtering cavity is arranged in an inner cavity at the upper part of the tank body, a filtering cavity body is a metal filter screen, a top cover of the filtering cavity is arranged in a clamping groove at the edge of the top of the tank body, and an upward convex limiting block is arranged on the outer side of the top cover of the filtering cavity; the tank cover is provided with a limiting hole matched with the filter cavity limiting block, the limiting hole is sleeved on the limiting block, the upper edges of the tank cover and the tank body are both provided with fixing holes 6, the tank cover is fixedly connected with the tank body through bolts penetrating through the fixing holes, the tank cover is also provided with a guide hole 4 connected with a guide rail, the tank cover is provided with an upper backflushing device 8 introduced into the filter cavity, and the center of the tank cover is provided with an outlet passage 9 introduced into the filter cavity; the side wall of the upper part of the tank body is provided with an inlet passage 1 and a pressure relief passage 3, and the opening position of the pressure relief passage is higher than that of the inlet passage; a pressure relief device 2 is arranged in the pressure relief passage; the side wall of the upper part of the tank body is also provided with a side backflushing device 7 which is communicated with the inner cavity of the tank body, and the opening position of the side backflushing device is higher than that of the pressure relief passage.

As can be seen from figures 1, 4 and 5, the lower part of the tank body is connected with a ball valve 18 through an upper flange 19a, and the lower part of the ball valve is connected with a slag storage tank 21 through a lower flange 19 b; the lower part of the slag storage tank is provided with a screw press which consists of a shell 22 with a porous cylinder body and a screw 24 sleeved in the shell 22, the screw is connected with a motor through a speed changer 27, and the inner wall of the shell 22 and the outer side of the screw 24 are wrapped with metal filter screens 23. The lower part of the shell 22 is provided with a liquid outlet 31, and the end part of the closed end is provided with a slag discharge port 30.

As can be seen from fig. 1 and 3, the metal filter screen is composed of an inner metal filter layer 11, a middle cloth bag filter layer 14 and an outer metal filter layer 15. The pressure relief device 2 arranged on the pressure relief passage 3 is provided with a pressure sensor, and the flow can be automatically adjusted according to different working pressure states of liquid.

As can be seen from figures 3 and 4, the connecting part of the filter cavity and the tank body is provided with

sealing rings

12 and 13, the connecting part of the ball valve and the upper flange plate 19 and the lower flange plate 19 is provided with a

sealing ring

17 and 28, and the connecting part of the screw rod of the screw squeezer and the shell of the screw squeezer is provided with a sealing ring 25. The ball valve is fixedly connected with the upper flange and the lower flange through bolts passing through the

fixing holes

16 and 20 respectively.

As can be seen from figures 1 and 3, the cover is provided with a handle, and the hook 5 is hung on the handle.

The application of the vacuum pump oil filtering device in the titanium sponge production process comprises the following steps:

(1) opening the access valve, opening the filter: after the valve of the inlet passage 1 and the valve of the outlet passage 9 are opened, dirty oil flows into the inlet passage and gradually fills the inner cavity of the tank body 29, liquid-solid separation starts when the liquid level contacts the outer wall 15 of the metal filter screen, clean oil reaches the interior of the filter chamber through the metal filter screen and is accumulated and then overflows from the outlet passage in the liquid-solid separation process, filter residues are intercepted on the outer wall 15 of the filter chamber by the filter layer, the dirty oil is gradually filled in the inner cavity of the whole tank body 29 along with the continuous injection of the dirty oil, the oil inlet speed is higher than the oil filtering speed, and redundant dirty oil overflows from the pressure relief passage 3 through the pressure relief device 2;

(2) starting an upper backflushing device, discharging clear oil: when filter residues on the outer wall 15 of the filter cavity are accumulated continuously, the filtering speed is reduced, the flow of the outlet passage 9 is obviously reduced, the valve of the inlet passage 1 is closed at the moment, the upper backflushing device 8 at the tank cover 10 is opened, high-pressure gas enters the filter cavity through the upper backflushing device, and filtered clean oil flows out of the outlet passage 9 under large pressure difference;

(3) starting a side backflushing device 7, cleaning filter residues to a residue storage area: when the clean oil basically flows out from the outlet passage, the valves of the upper backflushing device 8 and the outlet passage 9 are closed, the valve of the ball valve 18 of the slag storage area is opened, the side backflushing device 7 is started again, the high-pressure gas flushes the filter residue on the outer wall 15 of the filter layer through the side backflushing device, and the filter residue falls into the slag storage tank 21 of the slag storage area through the pipeline under the impact of the gas flow;

(4) the ball valve 18 is closed and the process enters the cycle: when the step (3) is finished, the valve of the ball valve 18 is closed, the clear oil is discharged out of the device, the filter residue enters a residue storage area, the whole device is divided into two parts by the ball valve 18, the operations of the steps (1) to (3) are continued on the parts above the ball valve 18, the motor of the screw press below the ball valve is always in an open state, the filter residue gradually falls into the residue storage tank 21 and then into the screw press shell below, the filter residue is continuously pressed under the driving of the screw press screw, the pressed dirty oil flows out from the liquid discharge port 31 at the lower part of the screw press shell 22 through the metal filter screen 23, the filter residue is introduced into the inlet passage again after being collected and is filtered, and the pressed filter residue is taken out from the residue discharge port 30 at the end part of the screw press shell 22.

Experimental test results show that in the process of treating dirty oil of a vacuum pump generated in titanium sponge production equipment, when the inner metal filter screen 11, the outer metal filter screen 15 and the metal filter screen 23 adopt conventional 200-mesh stainless steel wire screens, metal dust particles larger than 100 micrometers in the dirty oil can be filtered out; when the middle cloth bag filter layer 14 adopts a conventional 50-micron filter cloth, the particle size of dust remained in the treated clear oil is less than 50 microns.

Claims

1. The utility model provides a vacuum pump oil filter equipment with screw press, includes that the cup-shaped jar of body of prize-cup, cover, jar body and cover fixed connection, its characterized in that: the inner cavity at the upper part of the tank body is provided with a closed straight-wall lower concave filter cavity, the cavity of the filter cavity is a metal filter screen, the top cover of the filter cavity is arranged in a clamping groove at the edge of the top of the tank body, and the outer side of the top cover of the filter cavity is provided with a limiting block protruding upwards; the tank cover is provided with a limiting hole matched with the filter cavity limiting block, the limiting hole is sleeved on the limiting block, the upper edges of the tank cover and the tank body are both provided with fixing holes, the tank cover is fixedly connected with the tank body through bolts penetrating through the fixing holes, the tank cover is also provided with a guide hole connected with the guide rail, the tank cover is provided with an upper backflushing device communicated with the interior of the filter cavity, and the center of the tank cover is provided with an outlet passage communicated with the interior of the filter cavity; an inlet passage and a pressure relief passage are arranged on the side wall of the upper part of the tank body, and the opening position of the pressure relief passage is higher than that of the inlet passage; a pressure relief device is arranged in the pressure relief passage; the side wall of the upper part of the tank body is also provided with a side backflushing device which is communicated with the inner cavity of the tank body, and the opening position of the side backflushing device is higher than that of the pressure relief passage; the lower part of the tank body is connected with a ball valve through an upper flange plate, and the lower part of the ball valve is connected with a slag storage tank through a lower flange plate; the lower part of the slag storage tank is provided with a spiral squeezer which consists of a shell of a porous cylinder and a screw rod sleeved in the shell, the screw rod is connected with a motor through a speed changer, and the inner wall of the shell and the outer side of the screw rod are wrapped by metal filter screens.

2. A vacuum pump oil filter device according to claim 1, wherein: the metal filter screen of the filter cavity consists of an inner metal filter layer, a middle cloth bag filter layer and an outer metal filter layer.

3. The vacuum pump oil filter device according to claim 1 or 2, wherein: the pressure relief device arranged on the pressure relief passage is provided with a pressure sensor, and the flow can be automatically adjusted according to different working pressure states of liquid.

4. The vacuum pump oil filter device according to claim 1 or 2, wherein: the connection part of the filter cavity and the tank body, the connection part of the ball valve and the flange plate, and the connection part of the screw rod of the screw squeezer and the shell of the screw squeezer are all sealed by sealing rings.

5. The vacuum pump oil filter device according to claim 1 or 2, wherein: the ball valve is fixedly connected with the upper flange plate and the lower flange plate through bolts penetrating through the fixing holes respectively.

6. The vacuum pump oil filter device according to claim 1 or 2, wherein: the shell of the spiral squeezer porous cylinder is a cylinder with a uniform cross section.

7. A vacuum pump oil filter device according to claim 6, wherein: the shell of the porous cylinder body of the spiral squeezer is a cylinder, a liquid discharge port is arranged at the lower part of the shell, and a slag discharge port is arranged at the end part of the closed end.

8. The vacuum pump oil filter device according to claim 1 or 2, wherein: the tank cover is provided with a handle, and the hook is hung on the handle.