CN215524767U

CN215524767U - Float level meter and double water tank level balancing device for machine tool

Info

Publication number: CN215524767U
Application number: CN202120842718.0U
Authority: CN
Inventors: 方浩; 陈关洋; 徐杰
Original assignee: Hangzhou Good Friend Precision Machinery Co Ltd
Current assignee: Youjia International Cnc Machine Tool Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-01-14
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a floating ball type liquid level meter, wherein a floating ball is fixed at the lower end of a floating ball connecting rod, and the upper end of the floating ball connecting rod is connected with an indicating mechanism; the connecting rod sleeve is a longitudinally arranged hollow tube, and the cross section of the inner wall of the connecting rod sleeve is circular; the floating ball connecting rod is sleeved in the connecting rod sleeve in a clearance way; a limiting structure is fixed on the floating ball connecting rod; the limiting structure comprises a limiting wheel mounting rod, the inner side end of the limiting wheel mounting rod is fixed with the floating ball connecting rod, a limiting roller is mounted at the outer side end of the limiting wheel mounting rod through a rotating shaft, and the rolling direction of the limiting roller is vertical; the number of the limiting wheel mounting rods is at least 3, and the limiting wheel mounting rods are arranged at equal angles on a circumference which takes the axis of the floating ball connecting rod as the center of a circle; the outer side end of each limiting roller is in lap joint with the inner side wall of the connecting rod sleeve. On the basis, the utility model also discloses a double-water-tank liquid level balancing device for the machine tool. The utility model has the beneficial effects that: the friction can be reduced, the clamping stagnation phenomenon can be eliminated, and the display precision can be improved.

Description

Float level meter and double water tank level balancing device for machine tool

Technical Field

The utility model relates to the field of machine tools, in particular to a floating ball type liquid level meter and a double-water-tank liquid level balancing device for a machine tool using the same.

Background

In order to solve the problem of the chips of the cutter during processing, water can be discharged from the center of the cutter of the main shaft. A main water tank and an auxiliary water tank are needed for a central water outlet system of the main shaft cutter. The main water tank has a large volume and is a main storage place of the cooling liquid, and the function of the main water tank is to supplement the cooling liquid to the auxiliary water tank. And the auxiliary water tank filters impurities of the cooling liquid, then conveys the cooling liquid to a main shaft cutter, and sprays water at high pressure through a cutter center hole. Chinese patent document CN208696982U discloses a compact composite automatic scrap scraping water tank in 2019, 4 and 5 months, which comprises a water tank, a drum filter, a magnetic branch frame and a magnetic branch device, the water tank comprises a main water tank and an auxiliary water tank, the main water tank is provided with a drum filter, a cooler, a water baffle and a plurality of water pumps with water outlets, the auxiliary water tank is provided with a water suction pump, the drum filter is provided with a plurality of connecting flanges and a scrap scraping shaft controlled by a motor to rotate, the drum filter is communicated with the main water tank, the upper end of the drum filter is fixedly provided with a magnetic branch frame, the magnetic branch frame is provided with a water leakage groove, the water leakage groove is provided with a plurality of water leakage holes, the water leakage holes are connected with the connecting flanges through water pipes, the magnetic separator is fixedly installed on the magnetic separator bracket, a water inlet is formed in the magnetic separator, and the water inlet is connected with a water suction pump on the auxiliary water tank through a connecting pipe. The utility model has the advantages of compact structure, automatic chip removal, convenient overall maintenance and cleaning and the like. In the prior art, the key to realize the balance of the liquid levels of the main water tank and the auxiliary water tank is the stable operation of a central water outlet system of the main shaft cutter, the liquid level of the water tank for storing the cutting fluid of the general machine tool is displayed by a liquid level meter, and the height of the liquid is observed by naked eyes manually so as to determine whether to increase or decrease the cutting fluid. In the traditional floating ball type liquid level meter, the side wall of a floating ball connecting rod is rough, the floating ball connecting rod is sleeved in a connecting rod sliding groove or a connecting rod sleeve to slide up and down and is unsmooth, so that the real liquid level height cannot be accurately displayed, and the floating ball type liquid level meter is unsafe to use on a machine tool. The manual observation mode cannot monitor the water consumption condition of the machine tool in real time, and the automatic production of a factory is difficult to realize.

Disclosure of Invention

Based on the problems, the utility model provides the floating ball type liquid level meter which can eliminate the clamping stagnation phenomenon and improve the display precision; the double-water-tank liquid level balancing device for the machine tool can monitor the liquid level of the auxiliary water tank in real time, automatically supplement cooling liquid and ensure the safety and stability of the machine tool.

In order to realize the first purpose of the utility model, the utility model adopts the following technical scheme: a floating ball type liquid level meter comprises a floating ball connecting rod which is longitudinally arranged, a floating ball is fixed at the lower end of the floating ball connecting rod, the upper end of the floating ball connecting rod is connected with an indicating mechanism, and the floating ball type liquid level meter also comprises a connecting rod sleeve; the connecting rod sleeve is a longitudinally arranged hollow tube, and the cross section of the inner wall of the connecting rod sleeve is circular; the floating ball connecting rod is sleeved in the connecting rod sleeve in a clearance way; a limiting structure is fixed on the floating ball connecting rod; the limiting structure comprises a limiting wheel mounting rod, the inner side end of the limiting wheel mounting rod is fixed with the floating ball connecting rod, a limiting roller is mounted at the outer side end of the limiting wheel mounting rod through a rotating shaft, and the rolling direction of the limiting roller is vertical; the number of the limiting wheel mounting rods is at least 3, and the limiting wheel mounting rods are arranged at equal angles on a circumference which takes the axis of the floating ball connecting rod as the center of a circle; the outer side end of each limiting roller is in lap joint with the inner side wall of the connecting rod sleeve.

Preferably, the limiting roller is spherical.

Preferably, the limiting structures are multiple and are arranged up and down on the axis of the floating ball connecting rod.

Preferably, the liquid level meter further comprises a liquid level meter shell; the connecting rod sleeve is fixed below the liquid level meter shell; a through pointer through hole is formed in the liquid level meter shell, the pointer through hole is a long hole, and the length direction of the long hole is in the vertical direction; the indicating mechanism is a pointer, the pointer is fixedly connected with the upper end of the floating ball connecting rod through a pointer connecting handle, and the pointer connecting handle penetrates through the pointer through hole and can freely lift in the length direction of the pointer through hole.

Preferably, an upper proximity switch mounting seat and a lower proximity switch mounting seat are fixed on the shell of the liquid level meter; the upper proximity switch mounting seat is positioned right above the pointer through hole, and the upper proximity switch is fixed on the upper proximity switch mounting seat; the lower proximity switch mounting seat is positioned right below the pointer through hole, and the lower proximity switch is fixed on the lower proximity switch mounting seat.

Preferably, the upper proximity switch mounting seat is in an L shape formed by connecting a transverse sheet and a vertical sheet, the root of the transverse sheet of the L shape is fixed with the shell of the liquid level meter, the root of the vertical sheet is connected with the end part of the transverse sheet, the vertical sheet extends downwards, and the upper proximity switch is fixed on the vertical sheet; the shape of lower proximity switch mount pad is the L shape that horizontal piece and riser link to each other, and the root and the level gauge shell of the horizontal piece of L shape are fixed, and the root of riser and the end connection of horizontal piece, riser upwards extend, and proximity switch fixes on the riser down.

Preferably, the bottom of the connecting rod sleeve is fixedly connected with the connecting flange; the mounting surface of the connecting flange extends in the horizontal direction.

The floating ball type liquid level meter comprises a longitudinally-arranged connecting rod sleeve, and a longitudinally-arranged floating ball connecting rod is sleeved in the gap in the connecting rod sleeve. The upper end of the floating ball connecting rod is connected with the indicating mechanism, and the lower end of the floating ball connecting rod is connected with the floating ball. Wherein, in order to reduce the resistance of the longitudinal motion of the floating ball connecting rod in the connecting rod sleeve, the scheme defines that the cross section of the inner wall of the connecting rod sleeve is circular, and a limiting structure is designed on the floating ball connecting rod. The limiting structure comprises at least 3 limiting wheel mounting rods which radially extend out of the floating ball connecting rod, a limiting roller is mounted at the outer side end of each limiting wheel mounting rod through a transverse rotating shaft, the limiting rollers can only roll up and down, and the outer side ends of all the limiting rollers are in lap joint with the inner side wall of the connecting rod sleeve, so that the friction force of the lifting action of the floating ball connecting rod in the connecting rod sleeve is limited to the rolling friction of the limiting rollers. The limiting wheel mounting rods are required to be equal in length, and 3 or more limiting wheel mounting rods are adopted, so that the significance of equiangular arrangement on the circumference with the axis of the floating ball connecting rod as the center of circle is realized, the stability is improved, and possible deflection is eliminated. In order to reduce the contact surface, i.e. the friction, the spacing roller preferably has a spherical shape. And such limit structure can be two or more, arrange from top to bottom on the axis of floater connecting rod, has further guaranteed that the floater connecting rod is straight up straight down in the connecting rod sleeve, and is more sensitive to liquid level rising and falling changes. In the aspect of display, the pointer through hole extending in the vertical direction in the length direction is designed on the liquid level meter shell, the pointer connecting handle penetrates through the pointer through hole and can freely slide up and down, the inner side end of the pointer connecting handle is fixedly connected with the upper end of the floating ball connecting rod, and the outer side end of the pointer connecting handle is connected with the pointer. When the floating ball ascends and descends, the pointer is driven to synchronously ascend and descend on the outer side of the shell of the liquid level meter through the floating ball connecting rod and the pointer connecting handle. In order to correctly sense and identify the lifting of the pointer, an upper proximity switch mounting seat and a lower proximity switch mounting seat are respectively arranged on the upper scheme and the lower scheme of the pointer through hole of the liquid level meter shell. Go up proximity switch mount pad and the shape of proximity switch mount pad down and be L shape, the root of the horizontal piece of L shape is fixed with the level gauge shell, and the tip outwards extends, is connected with the riser of L shape: the L-shaped vertical sheet of the upper proximity switch mounting seat extends downwards and is used for mounting the upper proximity switch; the L-shaped vertical piece of the lower proximity switch mounting seat extends upwards and is used for mounting the lower proximity switch. The pointer goes up and down in the range of the pointer through hole, and is sensed by the upper proximity switch when the position is set at the upper part, and is sensed by the lower proximity switch when the position is set at the lower part. Therefore, the pointer needs to select a material or structure matching the sensing principle of the proximity switch, such as magnetism, optics, inductance, etc., and such materials or structures are common in the art and can be selected by those skilled in the art according to actual needs. The upper and lower setting positions will determine the liquid level height of the signal sent by the floating ball type liquid level meter, and the person skilled in the art can also determine the liquid level height according to the design requirements. In addition, on the fixed mounting mode of floater formula level gauge, this scheme has designed flange, can be firm fix on the water tank of making level through flange, and the installation is maintained also very conveniently.

In order to realize the second purpose of the utility model, the utility model adopts the following technical scheme: a double-water-tank liquid level balancing device for a machine tool comprises a main water tank, an auxiliary water tank, a water pumping motor, a floating ball type liquid level meter and a control center; the liquid level meter comprises a main water tank liquid level meter arranged on the main water tank and an auxiliary water tank liquid level meter arranged on the auxiliary water tank; the main water tank liquid level meter and the auxiliary water tank liquid level meter are the floating ball type liquid level meters; the upper proximity switch and the lower proximity switch on the main water tank liquid level meter and the auxiliary water tank liquid level meter are in signal connection with the control center; the water pumping motor is in signal connection with the control center.

In this scheme, the design has main water tank, expansion tank and the motor that draws water, and main water tank has set the main water tank level gauge, and expansion tank level gauge has set the expansion tank level gauge, and main water tank level gauge and expansion tank level gauge are the floater formula level gauge introduced above, all have upper and lower proximity switch. Be provided with control center in this scheme in addition, control center can adopt unmanned control techniques such as PLC, with the upper and lower proximity switch of water tank level gauge and expansion tank level gauge, with the equal signal connection of water pumping motor, can be after receiving the signal automatic execution operating program. For example, when the lower approach switch of the auxiliary water tank liquid level meter detects that the pointer approaches, namely the liquid level in the auxiliary water tank is low, the control center controls the water pumping motor to pump the cooling liquid from the main water tank to the auxiliary water tank; when an upper proximity switch of the auxiliary water tank liquid level meter detects that the pointer is close to the upper limit, namely the liquid level in the auxiliary water tank is about to reach the upper limit, and the control center controls the water pumping motor to stop pumping water; when the main water tank detects a high liquid level, the water pumping motor is started to pump the cooling liquid to the auxiliary water tank; when the main water tank displays a high liquid level for a long time or the auxiliary water tank displays a low liquid level for a long time, a fault is prompted, and an operator is reminded to check the equipment; and so on.

In conclusion, the beneficial effects of the utility model are as follows: the floating ball type liquid level meter can reduce friction, eliminate clamping stagnation and improve display precision; the double-water-tank liquid level balancing device for the machine tool can monitor the liquid level of the auxiliary water tank in real time, automatically supplement cooling liquid and ensure the safety and stability of the machine tool.

Drawings

FIG. 1 is a schematic view of the structure of the float level gauge of the present invention (at low level).

Fig. 2 is a schematic structural view (at high level) of the float level gauge of the present invention.

FIG. 3 is a schematic diagram of the fitting relationship between the connecting rod sleeve, the floating ball connecting rod, the limiting wheel mounting rod and the limiting roller in the floating ball type liquid level meter.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic structural diagram of the double-water-tank liquid level balancing device for the machine tool.

Wherein: 1 level gauge shell, 11 pointer through-holes, proximity switch mount pad on 12, proximity switch mount pad under 13, 21 floater, 22 floater connecting rods, 23 connecting rod sleeve, 24 pointers, 25 spacing round installation poles, 26 spacing gyro wheels, 3 flange, proximity switch on 41, proximity switch under 42, main water tank A, the expansion tank B, the main water tank level gauge of C1, the expansion tank level gauge of C2, D water motor, E control center.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings.

Example 1

Embodiment 1 is a floating ball level gauge. As shown in fig. 1, the floating ball type liquid level meter of this example includes a longitudinally disposed connecting rod bushing 23, and a liquid level meter housing 1 is fixed above the connecting rod bushing 23. In the connecting rod sleeve 23, a floating ball connecting rod 22 is sleeved in a clearance, the lower end of the floating ball connecting rod 22 is fixedly connected with a floating ball 21, and the upper end is connected with an indicating mechanism.

As shown in fig. 3 and 4, two upper and lower limit structures are mounted on the ball link 22. The limiting structure comprises a limiting wheel mounting rod 25 with the inner side end fixed on the floating ball connecting rod 22. The number of the limiting wheel mounting rods 25 is at least 3, and the limiting wheel mounting rods 25 are arranged at equal angles on a circumference with the axis of the floating ball connecting rod 22 as the center, and the number of the limiting wheel mounting rods 25 is 4 in the embodiment. The outer end of each limiting wheel mounting rod 25 is provided with a limiting roller 26 through a transverse rotating shaft, and the limiting roller 26 is spherical in the example.

As shown in fig. 1, the housing 1 of the liquid level meter is a rectangular parallelepiped case, and a pointer through hole 11 is provided on a side wall of one side of the case. The length direction of the pointer through hole 11 is a vertical direction. The upper end of the floating ball connecting rod 22 is positioned in the liquid level meter shell 1 and is connected with the inner side end of the pointer connecting handle, the pointer connecting handle extends transversely and extends out of the pointer through hole 11, the outer side end of the pointer connecting handle is connected with the pointer 24, and when the floating ball 21 rises and falls along with the liquid level, the pointer 24 is driven to rise and fall freely through the floating ball connecting rod 22 and the pointer connecting handle. An upper proximity switch mounting base 12 is fixed on the liquid level meter shell 1 above the pointer through hole 11. The section of the upper proximity switch mounting base 12 is L-shaped and comprises a transverse sheet extending transversely and a vertical sheet extending longitudinally, the inner side end of the transverse sheet is fixed with the liquid level meter shell 1, and the outer side end of the transverse sheet is connected with the upper end of the vertical sheet. An upper proximity switch 41 is fixed to the riser. Similarly, a lower proximity switch mount 13 is fixed below the pointer through hole 11. The cross section of the lower proximity switch mounting base 13 is also L-shaped, and comprises a transverse sheet extending transversely and a vertical sheet extending longitudinally, the inner side end of the transverse sheet is fixed with the liquid level meter shell 1, and the outer side end of the transverse sheet is connected with the lower end of the vertical sheet. A lower proximity switch 42 is fixed to the riser. In this example, the material of the selection pointer is such that the selection pointer can be sensed by the upper proximity switch 41 and the lower proximity switch 42 through the principle, and when the selection pointer approaches, the upper proximity switch 41 or the lower proximity switch 42 can be triggered to generate a signal.

The floating ball type liquid level meter of the embodiment adopts flange installation. The connecting flange 3 is fixed at the bottom of the connecting rod sleeve 23, the mounting surface of the connecting flange 3 extends along the horizontal direction, and the connecting flange 3 can be fixed with a leveled water tank to realize the mounting of the floating ball type liquid level meter.

In the float-type liquid level meter of the present embodiment, when the liquid level is lower, as shown in fig. 1, the float 21 is at a low position, exposing most of the float link 22, and the pointer 24 is also lowered to a position close to the lower proximity switch 42; when the liquid level is higher, as shown in fig. 2, the float 21 rises to a position close to the upper proximity switch 41. When the page is lifted and changed, the floating ball 21 drives the floating ball connecting rod 22 to lift synchronously, at the moment, rolling friction exists between the inner side walls of the floating ball connecting rod 22 and the connecting rod sleeve 23, the friction resistance is small, the lifting is flexible, and the clamping stagnation problem is not easy to generate.

Example 2

Embodiment 2 shown in fig. 5 is a double-water-tank liquid level balancing device for a machine tool, which comprises a main water tank a, an auxiliary water tank B, a main water tank level meter C1 installed on the main water tank a, an auxiliary water tank level meter C2 installed on the auxiliary water tank B, a water pumping motor D and a control center E. The control center E of this example includes a PLC programmed to trigger specific operations based on specific signals. Wherein, the main tank level gauge C1 and the auxiliary tank level gauge C2 are both the floating ball type level gauges described in embodiment 1; and the upper proximity switch 41 and the lower proximity switch 42 on the main tank liquid level meter C1 and the auxiliary tank liquid level meter C2 and the water pumping motor D are in signal connection with the control center E.

The double-water-tank liquid level balancing device for the machine tool can realize automatic supply of the main water tank and the auxiliary water tank: when a lower approach switch of the auxiliary water tank liquid level meter C2 detects that a pointer approaches, namely the liquid level in the auxiliary water tank B is low, the control center E controls the water pumping motor D to pump cooling liquid from the main water tank A to the auxiliary water tank B; when an upper proximity switch of the auxiliary water tank liquid level meter C2 detects that a pointer approaches, that is, the liquid level in the auxiliary water tank B is about to reach the upper limit, and at the moment, the control center E controls the water pumping motor D to stop pumping water; when the main water tank A detects a high liquid level, the water pumping motor D is started to pump the cooling liquid to the auxiliary water tank B; when the main water tank A displays a high liquid level for a long time or the auxiliary water tank B displays a low liquid level for a long time, a fault is prompted, and an operator is reminded to check the equipment; and so on.

Claims

1. A floating ball type liquid level meter comprises a floating ball connecting rod (22) which is longitudinally arranged, a floating ball (21) is fixed at the lower end of the floating ball connecting rod (22), and the upper end of the floating ball connecting rod is connected with an indicating mechanism, and is characterized by also comprising a connecting rod sleeve (23); the connecting rod sleeve (23) is a longitudinally arranged hollow tube, and the section of the inner wall of the connecting rod sleeve is circular; the floating ball connecting rod (22) is sleeved in the connecting rod sleeve (23) in a clearance way; a limiting structure is fixed on the floating ball connecting rod (22); the limiting structure comprises a limiting wheel mounting rod (25), the inner side end of the limiting wheel mounting rod (25) is fixed with the floating ball connecting rod (22), a limiting roller (26) is mounted at the outer side end of the limiting wheel mounting rod through a rotating shaft, and the rolling direction of the limiting roller (26) is vertical; the number of the limiting wheel mounting rods (25) is at least 3, and the limiting wheel mounting rods (25) are arranged at equal angles on a circumference which takes the axis of the floating ball connecting rod (22) as the center of a circle; the outer side end of each limiting roller (26) is lapped with the inner side wall of the connecting rod sleeve (23).

2. A float level gauge according to claim 1, wherein the limit roller (26) is spherical.

3. A float level gauge according to claim 1 or 2, wherein the said stop structure is a plurality of, arranged up and down on the axis of the float rod (22).

4. A float level gauge according to claim 1 or 2, further comprising a gauge housing (1); the connecting rod sleeve (23) is fixed below the liquid level meter shell (1); a through pointer through hole (11) is formed in the liquid level meter shell (1), the pointer through hole (1) is a long hole, and the length direction of the long hole is vertical; the indicating mechanism is a pointer (24), the pointer (24) is fixedly connected with the upper end of the floating ball connecting rod (22) through a pointer connecting handle, the pointer connecting handle penetrates through the pointer through hole (11), and the pointer can freely lift in the length direction of the pointer through hole (11).

5. The float type liquid level meter according to claim 4, wherein an upper proximity switch mounting seat (12) and a lower proximity switch mounting seat (13) are fixed on the liquid level meter housing (1); the upper proximity switch mounting seat (12) is positioned right above the pointer through hole (11), and the upper proximity switch (41) is fixed on the upper proximity switch mounting seat (12); the lower proximity switch mounting seat (13) is positioned right below the pointer through hole (11), and the lower proximity switch (42) is fixed on the lower proximity switch mounting seat (13).

6. The float type liquid level meter as claimed in claim 5, wherein the upper proximity switch mounting seat (12) is in the shape of an L-shape in which a cross piece is connected with a vertical piece, the root of the cross piece of the L-shape is fixed with the shell (1) of the liquid level meter, the root of the vertical piece is connected with the end of the cross piece, the vertical piece extends downwards, and the upper proximity switch (41) is fixed on the vertical piece; the lower proximity switch mounting seat (13) is in an L shape with a transverse sheet and a vertical sheet connected, the root of the transverse sheet of the L shape is fixed with the liquid level meter shell (1), the root of the vertical sheet is connected with the end part of the transverse sheet, the vertical sheet extends upwards, and the lower proximity switch (42) is fixed on the vertical sheet.

7. A float level gauge according to claim 1 or 2, wherein the bottom of the connecting rod sleeve (23) is fixedly connected to the connecting flange (3); the mounting surface of the connecting flange (3) extends in the horizontal direction.

8. A double-water-tank liquid level balancing device for a machine tool comprises a main water tank (A), an auxiliary water tank (B), a water pumping motor (D) and a floating ball type liquid level meter, and is characterized by also comprising a control center (E); the liquid level meter comprises a main water tank liquid level meter (C1) arranged on the main water tank (A) and an auxiliary water tank liquid level meter (C2) arranged on the auxiliary water tank (B); the main tank level gauge (C1) and the auxiliary tank level gauge (C2) are float level gauges as claimed in claim 5; the upper proximity switch (41) and the lower proximity switch (42) on the main water tank liquid level meter (C1) and the auxiliary water tank liquid level meter (C2) are in signal connection with the control center (E); the water pumping motor (D) is in signal connection with the control center (E).