Negative pressure type grinding oil filtering equipment

Abstract

The negative pressure type grinding oil filtering equipment comprises a tank body, a threaded cover is connected to the tank body in a sleeving mode, an oil inlet is formed in the threaded cover, a grinding oil pipe is installed in the oil inlet, a first electric valve is installed at the oil outlet end of the tank body, and an air port is formed in the tank body. The threaded cover is screwed on the tank body, grinding oil enters the tank body through the grinding oil pipe, at the moment, an air inlet of an external negative pressure pump enables the interior of the tank body to be subjected to negative pressure pumping through the negative pressure pump pipe and the air pipe, the grinding oil in the tank body sequentially penetrates through the filter plate under the negative pressure effect to be filtered, and the filtered grinding oil is stored at the bottom of the tank body. When the grinding oil in the tank body reaches the height of the liquid level sensor, the liquid level sensor transmits a signal to an external controller, the controller controls the first electric valve to be opened, the filtered grinding oil is discharged through the oil outlet end of the tank body, and during replacement, the threaded cover is screwed down, so that the tank body is opened, and the filter plates are conveniently taken out one by one to be cleaned or replaced.

Description

TECHNICAL FIELD

[0001] The patent relates to the technical field of grinding oil, in particular to a negative pressure type grinding oil filtering equipment. BACKGROUND

[0002] Grinding oil is responsible for lubricating the tool in the machining process, and can also cool the tool to prolong the tool life. The processing of cutting fluid has a great influence on the operation cost and environmental safety of the whole machining system. The grinding oil needs to be filtered by a negative pressure filtering equipment after long-term use. However, the current negative pressure type grinding oil filtering equipment has the problems of filter accessory blockage and inconvenient disassembly and replacement due to long-term filtering of grinding oil. CONTENT OF THE UTILITY MODEL

[0003] The patent aims to provide a negative pressure type grinding oil filtering equipment.

[0004] To achieve the above-mentioned purpose, the patent provides the following technical scheme: a negative pressure type grinding oil filtering equipment, comprising a tank body, a threaded cover is sleeved on the tank body, an oil inlet is formed on the threaded cover, a grinding oil pipe is installed in the oil inlet, a first electric valve is installed on the oil outlet end of the tank body, an air port is formed on the tank body, an air pipe is installed in the air port, a negative pressure pump pipe is connected to the air pipe through a flange, a measuring port is formed on the tank body, and a liquid level sensor is installed in the measuring port.

[0005] A filtering structure is installed in the tank body, the number of the filtering structure is three, the filtering structures are equidistantly distributed in the tank body, the filtering structure comprises an annular plate and a filter plate, the annular plate is installed in the tank body, and the filter plate is placed on the annular plate.

[0006] Preferably, a cooling structure is installed on the grinding oil pipe, the cooling structure comprises a box body, a pipe opening, a water inlet pipe and a drain pipe.

[0007] The two sides of the box body are respectively provided with the pipe openings, the grinding oil pipe passes through the pipe openings, the water inlet pipe is connected to the box body, and the drain pipe is connected to the box body.

[0008] Preferably, a circulating structure is installed on the box body, the circulating structure comprises a connecting pipe, a pump body, a U-shaped pipe, a detection port, a temperature sensor and a second electric valve.

[0009] The connecting pipe is connected to the grinding oil pipe, the liquid outlet end of the pump body is connected to the connecting pipe, the U-shaped pipe is connected to the liquid inlet end of the pump body, a circular hole is formed on the box body, the U-shaped pipe is installed in the circular hole, the U-shaped pipe is connected to the grinding oil pipe, the detection port is formed on the grinding oil pipe, the temperature sensor is installed in the detection port, and the second electric valve is installed on the grinding oil pipe.

[0010] Preferably, a limiting structure is installed between the annular plate and the filter plate, the limiting structure is arranged corresponding to the filter plate, and the limiting structure comprises an annular member and an annular groove.

[0011] The annular member is installed on the filter plate, and the annular groove is arranged on the annular plate.

[0012] Preferably, a sealing bearing is installed in the oil inlet, and the grinding oil pipe is installed in the inner ring of the sealing bearing.

[0013] Preferably, vertical blocks are installed on the threaded cover, the number of the vertical blocks is not less than four, and the vertical blocks are annularly and equidistantly distributed on the threaded cover.

[0014] Compared with the prior art, the negative pressure type grinding oil filtering equipment has the following advantages:

[0015] 1. The threaded cover is screwed on the tank body, the grinding oil enters the tank body through the grinding oil pipe, at this time, the air inlet of the external negative pressure pump passes through the negative pressure pump pipe and the air pipe to make the tank body be pumped to negative pressure, the grinding oil in the tank body is filtered in turn under the action of negative pressure, and the filtered grinding oil is stored at the bottom of the tank body. When the grinding oil in the tank body reaches the height of the liquid level sensor, the liquid level sensor transmits a signal to the external controller, the controller controls the first electric valve to be opened, and then the filtered grinding oil is discharged through the oil outlet end of the tank body. When the threaded cover is unscrewed, the tank body is opened, so that the filter plates are taken out one by one for cleaning or replacement.

[0016] 2. When the grinding oil enters the grinding oil pipe, the external cooling water enters the box body through the water inlet pipe, and then is discharged through the drain pipe to form a water circulation, so that the grinding oil in the grinding oil pipe passing through the box body is cooled. When the temperature of the grinding oil is lower than the rated temperature set by the temperature sensor, the second electric valve is opened, and then the grinding oil enters the tank body for negative pressure filtering treatment. When the temperature of the grinding oil is higher than the rated temperature set by the temperature sensor, the second electric valve is closed, and at this time, the pump body works to circulate the grinding oil into the grinding oil pipe through the connecting pipe and the U-shaped pipe for secondary cooling treatment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the patent;

[0018] Figure 2 It is a structural schematic diagram of the connecting pipe, the pump body and the U-shaped pipe of the patent;

[0019] Figure 3 It is a structural schematic diagram of A of the patent;

[0020] Figure 4 It is a structural schematic diagram of B of the patent.

[0021] Fig. 1, tank body, 2, screw cap, 3, oil inlet, 4, filter structure, 401, annular plate, 402, filter plate, 5, grinding oil pipe, 6, first electric valve, 7, gas port, 8, gas pipe, 9, flange, 10, negative pressure pump pipe, 11, measuring port, 12, liquid level sensor, 13, limiting structure, 14, annular part, 15, annular groove, 16, vertical block, 17, cooling structure, 18, box body, 19, pipe opening, 20, water inlet pipe, 21, drain pipe, 22, second electric valve, 23, circulating structure, 24, connecting pipe, 25, pump body, 26, U-shaped pipe, 27, detection port, 28, temperature sensor, 29, sealed bearing. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the patent will be described clearly and completely below with reference to the drawings in the embodiments of the patent. Obviously, the described embodiments are only part of the embodiments of the patent, not all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the patent.

[0023] Please refer to Figures 1-4 The patent provides a technical solution: a negative pressure type grinding oil filtering equipment, comprising a tank body 1, the tank body 1 is a tank for storing grinding oil, a threaded cap 2 is sleeved on the tank body 1, the threads machined on the tank body 1 are threadedly connected with the threads machined in the threaded cap 2, an oil inlet 3 is formed on the threaded cap 2, a grinding oil pipe 5 is installed in the oil inlet 3, grinding oil enters the tank body 1 through the grinding oil pipe 5, a first electric valve 6 is installed on the oil outlet end of the tank body 1, a gas port 7 is formed on the tank body 1, a gas pipe 8 is installed in the gas port 7, a negative pressure pump pipe 10 is connected to the gas pipe 8 through a flange 9, the negative pressure pump pipe 10 is connected with the air inlet of an external pump pressure pump, a measuring port 11 is formed on the tank body 1, the gas port 7 is higher than the measuring port 11, a liquid level sensor 12 is installed in the measuring port 11, the liquid level sensor 12 is electrically connected with the first electric valve 6 through an external controller and is powered by an external power supply, the model of the liquid level sensor 12 is QDY30A-B-G-SGN;

[0024] The filter structure 4 is installed in the tank body 1, the number of the filter structure 4 is three, the filter structure 4 is equidistantly distributed in the tank body 1, the filter structure 4 comprises a ring plate 401 and a filter plate 402, the filter plate 402 is made of stainless steel material with a surface full of through holes, and the aperture ratio from top to bottom is 3:2:1, the outer diameter of the middle filter plate 402 is equal to the inner diameter of the upper ring plate 401, and the outer diameter of the lower filter plate 402 is equal to the inner diameter of the middle ring plate 401, the ring plate 401 is installed in the tank body 1, the filter plate 402 is placed on the ring plate 401, the threaded cap 2 is screwed on the tank body 1, the grinding oil enters the tank body 1 through the grinding oil pipe 5, at this time the air inlet of the external negative pressure pump passes through the negative pressure pump pipe 10 and the air pipe 8 to make the tank body 1 negative pressure, the grinding oil in the tank body 1 passes through the filter plate 402 in turn under the action of negative pressure, and the filtered grinding oil is stored at the bottom of the tank body 1, when the grinding oil in the tank body 1 reaches the height of the liquid level sensor 12, the liquid level sensor 12 transmits a signal to the external controller, the controller controls the first electric valve 6 to open, then the filtered grinding oil is discharged through the oil outlet end of the tank body 1, when replacing, the threaded cap 2 is screwed off, so that the tank body 1 is opened, thereby facilitating the taking out of the filter plate 402 for cleaning or replacement.

[0025] The cooling structure 17 is installed on the grinding oil pipe 5, the cooling structure 17 comprises a box body 18, a pipe opening 19, a water inlet pipe 20 and a drain pipe 21;

[0026] The pipe opening 19 is formed on both sides of the box body 18, the grinding oil pipe 5 passes through the pipe opening 19, the grinding oil pipe 5 is welded in the pipe opening 19, the water inlet pipe 20 is connected to the box body 18, and the drain pipe 21 is connected to the box body 18;

[0027] The circulation structure 23 is installed on the box body 18, the circulation structure 23 comprises a connecting pipe 24, a pump body 25, a U-shaped pipe 26, a detection port 27, a temperature sensor 28 and a second electric valve 22 (the connecting pipe 24 and the U-shaped pipe 26 are transparent PVC pipes);

[0028] The connecting pipe 24 is connected to the grinding oil pipe 5, the outlet of the pump body 25 is connected to the connecting pipe 24 (the outlet of the pump body is screwed to the connecting pipe, and a filter screen is screwed to the connecting pipe, which can filter the grinding oil entering the pump body, avoid the pump body from being blocked, and be regularly disassembled and cleaned), the pump body 25 is an oil pump, the U-shaped pipe 26 is connected to the inlet of the pump body 25, a circular hole is formed in the box body 18, the U-shaped pipe 26 is installed in the circular hole, the U-shaped pipe 26 is connected to the grinding oil pipe 5, the detection port 27 is formed in the grinding oil pipe 5, the temperature sensor 28 is installed in the detection port 27, the model of the temperature sensor 28 is CWDZ11 (the temperature value is set in advance), the second electric valve 22 is installed in the grinding oil pipe 5, the temperature sensor 28 is electrically connected to the second electric valve 22 and the pump body 25 through an external controller, and is powered on, when the grinding oil enters the grinding oil pipe 5, the external cooling water enters the box body 18 through the water inlet pipe 20, and then is discharged through the drain pipe 21 to form water circulation, the grinding oil in the grinding oil pipe 5 passing through the box body 18 can be cooled, when the temperature of the grinding oil is lower than the rated temperature set by the temperature sensor 28, the second electric valve 22 is opened, and then the grinding oil enters the tank body 1 for negative pressure filtration treatment, when the temperature of the grinding oil is higher than the rated temperature set by the temperature sensor 28, the second electric valve 22 is closed, at this time, the pump body 25 works, the grinding oil is circulated back to the grinding oil pipe 5 through the connecting pipe 24 and the U-shaped pipe 26 for secondary cooling treatment until the temperature is qualified, and then negative pressure filtration treatment is performed.

[0029] The limiting structure 13 is installed between the annular plate 401 and the filter plate 402, the limiting structure 13 is arranged in correspondence with the filter plate 402, and the limiting structure 13 comprises an annular part 14 and an annular groove 15.

[0030] The annular part 14 is installed on the filter plate 402, the annular groove 15 is formed in the annular plate 401, the annular part 14 is arranged in the annular groove 15, the annular part 14 on the filter plate 402 is inserted into the annular groove 15 on the annular plate 401, so that the filter plate 402 is limited on the annular plate 401, and the annular part 14 is customized according to the size of the filter plate 402.

[0031] The sealing bearing 29 is installed in the oil inlet 3, and the grinding oil pipe 5 is installed in the inner ring of the sealing bearing 29, when the threaded cover 2 is screwed, the sealing bearing 29 on the threaded cover 2 rotates on the grinding oil pipe 5, so that the threaded cover 2 is conveniently disassembled.

[0032] The vertical blocks 16 are installed on the threaded cover 2, the number of the vertical blocks 16 is not less than four, the vertical blocks 16 are annularly and equidistantly distributed on the threaded cover 2, and the threaded cover 2 is conveniently rotated through the vertical blocks 16.

[0033] In use of the negative pressure grinding oil filter device, first screw the threaded cover 2 on the tank body 1, the grinding oil enters the tank body 1 through the grinding oil pipe 5, at this time the outside cooling water enters the box body 18 through the water inlet pipe 20, then is discharged through the drain pipe 21 to form water circulation, the grinding oil in the grinding oil pipe 5 passing through the box body 18 can be cooled, when the grinding oil temperature is lower than the rated temperature set by the temperature sensor 28, the second electric valve 22 is opened, then the grinding oil enters the tank body 1 for negative pressure filtration treatment, when the grinding oil temperature is higher than the rated temperature set by the temperature sensor 28, the second electric valve 22 is closed, at this time the pump body 25 works, the grinding oil is circulated back to the grinding oil pipe 5 through the connecting pipe 24 and the U-shaped pipe 26 for secondary cooling treatment until the temperature is qualified, then negative pressure filtration treatment is carried out, when the qualified grinding oil enters the tank body 1, the air inlet of the outside negative pressure pump passes through the negative pressure pump pipe 10 and the air pipe 8 to make the tank body 1 be pumped to negative pressure, then the grinding oil in the tank body 1 passes through the filter plate 402 in turn under the action of negative pressure for filtration treatment, the filtered grinding oil is stored at the bottom of the tank body 1, when the grinding oil in the tank body 1 reaches the height of the liquid level sensor 12, the liquid level sensor 12 transmits a signal to the outside controller, the controller controls the first electric valve 6 to be opened, then the filtered grinding oil is discharged through the oil outlet end of the tank body 1, when replacement, screw down the threaded cover 2, then the tank body 1 is opened, so that the filter plate 402 is taken out one by one for cleaning or replacement.

[0034] Although the embodiments of the present patent have been shown and described, it is to be understood that for the purpose of the present patent, substitutions, modifications, equivalents, and improvements, which do not depart from the spirit and essential characteristics of the present patent, are covered by the present patent. The scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. A negative pressure type grinding oil filtering apparatus comprising a tank body (1), characterized in that: The threaded cover (2) is sleeved on the tank body (1), an oil inlet (3) is formed in the threaded cover (2), a grinding oil pipe (5) is installed in the oil inlet (3), a first electric valve (6) is installed at the oil outlet end of the tank body (1), an air hole (7) is formed in the tank body (1), an air pipe (8) is installed in the air hole (7), a negative pressure pump pipe (10) is connected to the air pipe (8) through a flange (9), and a measuring hole (11) is formed in the tank body (1), a liquid level sensor (12) is installed in the measuring hole (11). The filter structure (4) is installed in the tank body (1), the number of the filter structure (4) is three, the filter structure (4) is equidistantly distributed in the tank body (1), and the filter structure (4) comprises an annular plate (401) and a filter plate (402).

2. The negative pressure type grinding oil filtering apparatus according to claim 1, wherein: The cooling structure (17) is installed on the grinding oil pipe (5), and the cooling structure (17) comprises a box body (18), a pipe opening (19), a water inlet pipe (20) and a drain pipe (21). The pipe opening (19) is formed on both sides of the box body (18), the grinding oil pipe (5) passes through the pipe opening (19), the water inlet pipe (20) is connected to the box body (18), and the drain pipe (21) is connected to the box body (18).

3. The negative pressure type grinding oil filtering apparatus according to claim 2, wherein: The circulating structure (23) is installed on the box body (18), and the circulating structure (23) comprises a connecting pipe (24), a pump body (25), a U-shaped pipe (26), a detection hole (27), a temperature sensor (28) and a second electric valve (22). The connecting pipe (24) is connected to the grinding oil pipe (5), the liquid outlet end of the pump body (25) is connected to the connecting pipe (24), the U-shaped pipe (26) is connected to the liquid inlet end of the pump body (25), a circular hole is formed in the box body (18), the U-shaped pipe (26) is installed in the circular hole, the U-shaped pipe (26) is connected to the grinding oil pipe (5), the detection hole (27) is formed in the grinding oil pipe (5), the temperature sensor (28) is installed in the detection hole (27), and the second electric valve (22) is installed on the grinding oil pipe (5).

4. The negative pressure type grinding oil filtering apparatus according to claim 1, wherein: The limiting structure (13) is installed between the annular plate (401) and the filter plate (402), the limiting structure (13) is arranged in correspondence with the filter plate (402), and the limiting structure (13) comprises an annular part (14) and an annular groove (15). The annular part (14) is installed on the filter plate (402), the annular groove (15) is formed in the annular plate (401), and the annular part (14) is arranged in the annular groove (15).

5. The negative pressure type grinding oil filtering apparatus according to claim 1, wherein: The sealing bearing (29) is installed in the oil inlet (3), and the grinding oil pipe (5) is installed in the inner ring of the sealing bearing (29).

6. The negative pressure type grinding oil filtering apparatus according to claim 1, wherein: The vertical blocks (16) are installed on the threaded cover (2), the number of the vertical blocks (16) is not less than four, and the vertical blocks (16) are annularly and equidistantly distributed on the threaded cover (2).

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