CN215952675U

CN215952675U - Liquid volume quantifying device

Info

Publication number: CN215952675U
Application number: CN202121730118.1U
Authority: CN
Inventors: 赵红举; 任文廉; 王臻明; 宋国强; 于浩; 王君; 胡南; 罗昆; 张家勇
Original assignee: HASCO KSPG Nonferrous Components Shanghai Co Ltd
Current assignee: HASCO KSPG Nonferrous Components Shanghai Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-04
Anticipated expiration: 2031-07-28

Abstract

The utility model provides a liquid volume quantifying device which comprises a first base, a quantifying cylinder, a piston and a second base, wherein the quantifying cylinder is provided with a first end and a second end; a liquid inlet and a liquid outlet are arranged on the first base, and the liquid inlet and the liquid outlet are communicated to form a fluid channel communicated with the inside of the quantitative cylinder; a liquid inlet valve is arranged at the liquid inlet, and a liquid outlet valve is arranged at the liquid outlet; the piston is positioned in the quantitative cylinder, and the periphery of the piston is in close contact with the inner wall of the quantitative cylinder; the second base is provided with a resetting device for driving the piston to move to the position of the minimum stroke; the utility model realizes the quantitative discharge of the stock solution by utilizing the maximum stroke position and the minimum stroke position of the piston and ensures the quantitative accuracy.

Description

Liquid volume quantifying device

Technical Field

The utility model belongs to the technical field of release agent preparation, and particularly relates to a liquid volume quantifying device.

Background

With the rapid development of vehicle lightweight and 5G communication, the structures of vehicle body structural parts, new energy parts, 5G communication parts and other pressure casting products are more and more complex, and the requirements on pressure casting equipment are higher. In the production process of the die-casting product, the demolding quality of the die-casting product directly influences the qualification rate of the die-casting product, and the demolding quality of the die-casting product is greatly influenced by the demolding agent, particularly the concentration of the demolding agent. The low concentration of the release agent can lead to the unsmooth release of the die-casting product, and the high concentration can lead to the accumulation of the surface coating of the product to generate variegated colors, and simultaneously can cause the waste of the release agent, thereby increasing the cost. Therefore, if the precise proportion of the release agent is to be realized, the stock solution and the water need to be precisely quantified, but the existing quantifying device is usually a measuring cup, when the quantitative stock solution is measured, impurities are easy to enter to pollute the stock solution, and when the measured stock solution is poured into the water to be mixed, part of the stock solution remains in the measuring cup, so that the concentration of the mixed solution is low; even if the sensors such as a flowmeter are used for quantification, the concentration of the mixed liquid is too high due to the excessive stock solution caused by the delay of the sensors, the purpose of accurate quantification cannot be achieved,

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages of the prior art, an object of the present invention is to provide a liquid volume quantifying apparatus, which utilizes the stroke of a piston in a quantifying cylinder to achieve quantitative discharge of a stock solution, and effectively avoids the problem of excessive discharge of the stock solution caused by sensor delay, thereby ensuring accurate proportioning of the solution.

In order to achieve the above and other related objects, the present invention provides a liquid volume quantifying apparatus, including a first base, a quantifying cylinder, a piston, and a second base, wherein the quantifying cylinder has a first end and a second end, the first end of the quantifying cylinder is disposed on the first base, and the second end of the quantifying cylinder is disposed on the second base; the first base is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated to form a fluid channel; the fluid channel is communicated with the inside of the quantifying cylinder; a liquid inlet valve is arranged at the liquid inlet, and a liquid outlet valve is arranged at the liquid outlet; the piston is movably arranged in the quantitative cylinder, and the periphery of the piston is in close contact with the inner wall of the quantitative cylinder; the second base is provided with a resetting device for driving the piston to move to the position of the minimum stroke; according to the utility model, the raw liquid is conveyed into the quantitative cylinder through the liquid inlet, so that the piston moves to the maximum stroke position under the pushing of the raw liquid, then the liquid inlet is closed, the liquid outlet is opened, the piston is pushed to recover to the minimum stroke position by using the resetting device, and the volume of the raw liquid discharged from the liquid outlet is fixed (the volume of the discharged raw liquid is determined by the inner diameter of the quantitative cylinder and the moving stroke distance of the piston), thereby realizing the quantitative discharge of the raw liquid and effectively avoiding the problem of inaccurate quantification caused by the delay of a sensor; meanwhile, in the quantitative process, the device provided by the utility model always ensures the cleanliness of the stock solution, and avoids waste caused by stock solution pollution.

Preferably, the resetting device comprises an air pipe, the second base is provided with an air hole communicated with the inside of the quantifying cylinder, and the air hole is connected with the air pipe so that air in the quantifying cylinder is discharged from the air hole when the quantifying cylinder enters the liquid; when the quantitative cylinder needs to discharge liquid, the air can be supplied to the quantitative cylinder through the air hole, so that the piston automatically moves to the position of the minimum stroke.

Preferably, the resetting device comprises a push rod, a first through hole communicated with the inside of the quantitative cylinder is formed in the second base, and the push rod penetrates through the first through hole to enter the quantitative cylinder and be connected with the piston, so that the piston is manually moved to the position of the minimum stroke through the push rod.

Preferably, the liquid volume quantifying device comprises a first proximity switch and a second proximity switch, and one end of the push rod, which is far away from the piston, is provided with a detection end matched with the first proximity switch and the second proximity switch; the first proximity switch is located at the minimum stroke position of the detection end, the second proximity switch is located at the maximum stroke position of the detection end, whether the piston moves in place or not is detected by the proximity switch, and the problem of inaccurate quantification caused by the fact that the piston position is observed by naked eyes is avoided.

Preferably, the second base is provided with an adjusting bolt which can extend into the metering cylinder to adjust the maximum stroke position of the piston, so that the volume of the discharged stock solution is changed, and the quantitative requirements of different stock solution volumes are met.

Preferably, the opposite sides of the first base and the second base are provided with positioning blind holes, the first end of the quantifying cylinder is positioned in the positioning blind hole of the first base, and the second end of the quantifying cylinder is positioned in the positioning blind hole of the second base; the first base and the second base are connected through the fixing bolt, and the quantifying cylinder is limited and fixed through the first base and the second base, so that the whole quantifying device can be conveniently disassembled and assembled.

Preferably, a sealing ring which is in close contact with the quantifying cylinder is arranged in the positioning blind hole so as to ensure the sealing performance between the quantifying cylinder and the first base as well as between the quantifying cylinder and the second base.

Preferably, the liquid outlet valve is a pneumatic angle seat valve, a reversing electromagnetic valve is arranged on the pneumatic angle seat valve, the air hole is connected with the reversing electromagnetic valve through an air pipe, and the pneumatic angle seat valve is used for simultaneously controlling the liquid outlet to be opened and the piston to move towards the direction close to the first base so as to realize automatic quantitative discharge.

Preferably, the liquid inlet valve is a pneumatic angle seat valve so as to ensure the control sensitivity.

Preferably, a check valve is arranged on the liquid outlet valve to avoid the backflow of stock solution.

Preferably, the piston comprises a piston body and an O-shaped sealing ring, an annular groove is formed in the periphery of the piston body, and the O-shaped sealing ring is installed in the annular groove to guarantee the sealing performance between the piston and the inner wall of the quantitative cylinder.

As described above, the liquid volume quantifying device of the present invention has the following beneficial effects:

(1) the quantitative discharge device realizes the quantitative discharge of the stock solution by utilizing the maximum stroke position and the minimum stroke position of the piston in the quantitative cylinder, ensures the quantitative accuracy and avoids the problem of excessive discharge of the stock solution caused by the delay of the sensor;

(2) the adjusting bolt is rotated according to the required stock solution volume to change the maximum stroke position of the piston, so that quantitative discharge of different stock solution volumes is realized;

(3) the quantitative cylinder is limited and fixed through the first base and the second base, so that the quantitative cylinder is convenient to disassemble, assemble and replace, and the processing difficulty of parts is reduced;

(4) the stock solution is always in a closed environment in the process of entering and discharging the stock solution from the quantifying cylinder, so that the cleanliness of the stock solution is ensured, and the waste of the stock solution caused by pollution is avoided;

(5) arrange the second proximity switch in the maximum stroke position department of piston, first proximity switch arranges in the minimum stroke position department of piston, utilizes the proximity switch signal to judge the piston position, when improving quantitative emission efficiency, avoids because of the inaccurate problem of ration that the naked eye observation error leads to.

Drawings

Fig. 1 is a perspective view of a liquid volume quantifying device according to the present invention.

Fig. 2 is a partial front sectional view of the liquid volume dosing device of the present invention.

Fig. 3 is a front sectional view of the first base.

FIG. 4 is a front sectional view of the second base

Fig. 5 is a perspective view of the piston.

Description of the reference numerals

The quantitative cylinder 2, the piston 3, the piston body 31, the fixing hole 31a, the O-shaped sealing ring 32, the push rod 4, the detection end 41, the first proximity switch 51, the second proximity switch 52, the second base 6, the first through hole 61, the air hole 62, the positioning blind hole 63, the sealing ring 631, the second through hole 64, the adjusting bolt 65, the adjusting nut 651, the liquid inlet valve 7, the liquid outlet valve 8, the check valve 81 and the fixing bolt 9.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The first embodiment:

as shown in fig. 1 and 2, the present invention provides a liquid volume quantifying apparatus, including a first base 1, a quantifying cylinder 2, a piston 3 and a second base 6, wherein the quantifying cylinder 2 has a first end and a second end, the first end of the quantifying cylinder 2 is disposed on the first base 1, and the second end of the quantifying cylinder 2 is disposed on the second base 6; the first base 1 is provided with a liquid inlet communicated with the stock solution supply device and a liquid outlet for conveying stock solution to the solution preparation device, and the liquid inlet and the liquid outlet are communicated to form a fluid channel 11; the fluid channel 11 is communicated with the inside of the quantifying cylinder 2; a liquid inlet valve 7 is arranged at the liquid inlet, and a liquid outlet valve 8 is arranged at the liquid outlet; the piston 3 is movably arranged in the quantitative cylinder 2, and the periphery of the piston 3 is tightly contacted with the inner wall of the quantitative cylinder 2; be equipped with the resetting means that drive piston 3 removed to minimum stroke position department on the second base, resetting means includes push rod 4, is equipped with on the second base 6 with the first through-hole 61 of the inside intercommunication of quantitative section of thick bamboo 2, push rod 4 passes first through-hole 61 and is connected with piston 3 in getting into quantitative section of thick bamboo 2.

When the stock solution needs to be quantified, the piston 3 needs to be pushed to move firstly, so that the piston 3 is positioned at the position of the minimum stroke, then the liquid outlet valve 8 is closed, the liquid inlet valve 7 is opened, the stock solution enters the quantifying cylinder 2 to push the piston 3 to move towards the direction far away from the first base 1, and the liquid inlet valve 7 is closed until the piston 3 reaches the position of the maximum stroke; then opening the liquid outlet valve 8, pushing the piston 3 to move towards the direction close to the first base 1 until the piston reaches the position of minimum stroke, and closing the liquid outlet valve 8; at this time, the volume of the stock solution discharged by the liquid volume quantifying device is a fixed value (i.e., the volume of the discharged stock solution is determined by the inner diameter of the quantifying cylinder 2 and the distance between the maximum stroke position and the minimum stroke position of the piston 3), and the quantitative discharge of the stock solution is realized.

As shown in fig. 5, the piston 3 includes a piston body 31 and an O-ring 32, a fixing hole 31a for fixing the connecting end of the push rod 4 is provided on the piston body 31, an annular groove is provided on the periphery of the piston body 31, and the O-ring 32 is installed in the annular groove to be in close contact with the inner wall of the dosing cylinder 2, so as to achieve the effect of sealing and cleaning the inner wall of the dosing cylinder 2.

As shown in fig. 2, the liquid volume quantifying device comprises a first proximity switch 51 and a second proximity switch 52, and one end of the push rod 4 away from the piston 3 is provided with a detection end 41 matched with the first proximity switch 51 and the second proximity switch 52; the first proximity switch 51 is located at the minimum stroke position of the detection end 31, the second proximity switch 52 is located at the maximum stroke position of the detection end 41, whether the piston 3 moves in place or not is judged by signals of the proximity switches, the quantitative efficiency is improved, and meanwhile the problem of inaccurate quantification caused by small actual discharge volume of the stock solution due to errors of human eye observation is avoided.

As shown in fig. 2, the second base 6 is provided with an adjusting bolt 65 which can extend into the measuring cylinder 2 to adjust the maximum stroke position of the piston 3, so as to satisfy the quantitative requirements of different stock solution volumes; in this embodiment, an adjusting nut 651 is fixed to the outer end surface of the second base 6, the adjusting bolt 65 is screwed to the adjusting nut 651, and the second base 6 is provided with a second through hole 64 through which the adjusting bolt 65 passes so that the adjusting bolt 65 extends into the dosing cylinder 2, and the maximum stroke position that the piston 3 can reach is adjusted by changing the extending amount of the adjusting bolt 65.

As shown in fig. 2 to 4, the opposite sides of the first base 1 and the second base 6 are provided with positioning blind holes 63, the first end of the quantifying cylinder 2 is located in the positioning blind hole 63 of the first base 1, and the second end of the quantifying cylinder 2 is located in the positioning blind hole 63 of the second base 6; first base 1 and second base 6 can dismantle fixed connection through fixing bolt 9, utilize first base 1 and second base 6 to carry out spacing fixed to a ration section of thick bamboo 2, the dismouting and the processing of the ration device of being convenient for.

As shown in fig. 2, a sealing ring 631 is disposed in the positioning blind hole 63 and is in close contact with the dosing cylinder 2 to ensure the sealing performance between the dosing cylinder 2 and the base (including the first base 1 and the second base 6).

It can be understood that the liquid inlet valve 7 and the liquid outlet valve 8 are various valves such as pneumatic angle seat valves or stop valves which can be switched on or off, and the pneumatic angle seat valves are preferably arranged in the embodiment, so that the pneumatic angle seat valves not only have the characteristics of sensitive reaction, accurate action and frequent starting, but also are convenient to install.

Second embodiment:

as shown in fig. 1 and 2, the present invention provides a liquid volume quantifying apparatus, including a first base 1, a quantifying cylinder 2, a piston 3 and a second base 6, wherein the quantifying cylinder 2 has a first end and a second end, the first end of the quantifying cylinder 2 is disposed on the first base 1, and the second end of the quantifying cylinder 2 is disposed on the second base 6; the first base 1 is provided with a liquid inlet communicated with the stock solution supply device and a liquid outlet for conveying stock solution to the solution preparation device, and the liquid inlet and the liquid outlet are communicated to form a fluid channel 11; the fluid channel 11 is communicated with the inside of the quantifying cylinder 2; a liquid inlet valve 7 is arranged at the liquid inlet, and a liquid outlet valve 8 is arranged at the liquid outlet; the piston 3 is movably arranged in the quantitative cylinder 2, and the periphery of the piston 3 is tightly contacted with the inner wall of the quantitative cylinder 2; the second base is provided with a resetting device for driving the piston 3 to move to the position of the minimum stroke, the resetting device comprises an air pipe, the second base 6 is provided with an air hole 62 communicated with the inside of the quantitative cylinder 2, and the air hole 62 realizes automatic air inlet or automatic air exhaust through the air pipe.

When the stock solution needs to be quantified, gas needs to be supplied to the gas hole 62 to push the piston 3 to automatically move towards the direction close to the first base 1, so that the piston 3 is located at the position of the minimum stroke, then the liquid outlet valve 8 is closed, the liquid inlet valve 7 is opened, the stock solution enters the quantifying cylinder 2 to push the piston 3 to automatically move towards the direction far away from the first base 1, and the liquid inlet valve 7 is closed until the piston 3 reaches the position of the maximum stroke; then opening the liquid outlet valve 8, supplying gas to the gas hole 62 to push the piston 3 to move towards the direction close to the first base 1 until the piston reaches the minimum stroke position, and closing the liquid outlet valve 8; at this time, the volume of the stock solution discharged by the liquid volume quantifying device is a fixed value (i.e., the volume of the discharged stock solution is determined by the inner diameter of the quantifying cylinder 2 and the distance between the maximum stroke position and the minimum stroke position of the piston 3), and the automatic quantitative discharge of the stock solution is realized.

As shown in fig. 2, the liquid volume quantifying device comprises a first proximity switch 51, a second proximity switch 52 and a push rod 4, a first through hole 61 communicated with the inside of the quantifying cylinder 2 is arranged on the second base 6, and the push rod 4 passes through the first through hole 61 and enters the quantifying cylinder 2 to be connected with the piston 3; one end of the push rod 4, which is far away from the piston 3, is provided with a detection end 41 matched with the first proximity switch 51 and the second proximity switch 52; the first proximity switch 51 is located at the minimum stroke position of the detection end 31, the second proximity switch 52 is located at the maximum stroke position of the detection end 41, whether the piston 3 moves in place or not is judged by signals of the proximity switches, the quantitative efficiency is improved, and meanwhile the problem of inaccurate quantification caused by small actual discharge volume of the stock solution due to errors of human eye observation is avoided.

It can be understood that the piston 3 can be ensured to move in place by setting the air inlet time and the liquid inlet time, and the occurrence of quantitative errors is avoided.

As shown in fig. 2, the liquid outlet valve 8 is a first pneumatic angle seat valve, a reversing solenoid valve connected with an air source is arranged on the first pneumatic angle seat valve, the air hole 62 is connected with the reversing solenoid valve through an air pipe, and compressed air is respectively conveyed to the air hole 62 and the first pneumatic angle seat valve through the reversing solenoid valve, so that the quantitative discharge of stock solution is realized, and meanwhile, the quantitative device is conveniently installed on different solution configurators.

It can be understood that the liquid inlet valve 7 is a pneumatic angle seat valve or a stop valve and other various valves capable of being switched on or off, and the present embodiment is preferably configured as a pneumatic angle seat valve, which not only has the characteristics of sensitive response, accurate action and frequent starting, but also is convenient for being connected with different stock solution supply devices.

As shown in fig. 1, the liquid outlet valve 8 is communicated with the liquid outlet through a one-way valve 81 to prevent the liquid from flowing back into the quantifying cylinder 2 through the liquid outlet.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The liquid volume quantifying device is characterized by comprising a first base (1), a quantifying cylinder (2), a piston (3) and a second base (6), wherein the quantifying cylinder (2) is provided with a first end and a second end, the first end of the quantifying cylinder (2) is arranged on the first base (1), and the second end of the quantifying cylinder (2) is arranged on the second base (6); a liquid inlet and a liquid outlet are arranged on the first base (1), and the liquid inlet and the liquid outlet are communicated to form a fluid channel (11); the fluid channel (11) is communicated with the inside of the quantitative cylinder (2); a liquid inlet valve (7) is arranged at the liquid inlet, and a liquid outlet valve (8) is arranged at the liquid outlet; the piston (3) is movably arranged in the quantitative cylinder (2), and the periphery of the piston (3) is in close contact with the inner wall of the quantitative cylinder (2); and a resetting device for driving the piston (3) to move to the position of the minimum stroke is arranged on the second base (6).

2. A liquid volume dosing device as claimed in claim 1, characterized in that the resetting means comprises an air tube, the second base (6) being provided with an air hole (62) communicating with the inside of the dosing cylinder (2), the air hole (62) being connected to the air tube.

3. A liquid volume dosing device as claimed in claim 1 or 2, characterized in that the resetting means comprises a push rod (4), the second base (6) is provided with a first through hole (61) communicating with the inside of the dosing cylinder (2), and the push rod (4) passes through the first through hole (61) and enters the dosing cylinder (2) to be connected with the piston (3).

4. A liquid volumetric dosing device according to claim 3, characterized in that it comprises a first proximity switch (51) and a second proximity switch (52), the end of the push rod (4) remote from the piston (3) being provided with a detection end (41) cooperating with the first proximity switch (51) and the second proximity switch (52); the first proximity switch (51) is located at the minimum stroke position of the detection end (41), and the second proximity switch (52) is located at the maximum stroke position of the detection end (41).

5. A liquid volume dosing device as claimed in claim 1 or 2, characterized in that the second base (6) is provided with an adjusting bolt (65) which can be inserted into the dosing cylinder (2) for adjusting the maximum stroke position of the piston (3).

6. A liquid volume dosing device as claimed in claim 1, characterized in that opposite sides of the first base (1) and the second base (6) are provided with a positioning blind hole (63), a first end of the dosing cylinder (2) being located in the positioning blind hole (63) of the first base (1), a second end of the dosing cylinder (2) being located in the positioning blind hole (63) of the second base (6); the first base (1) and the second base (6) are connected through a fixing bolt (9).

7. A liquid volume dosing device as claimed in claim 6, characterized in that the blind positioning hole (63) is provided with a sealing ring (631) which is in close contact with the dosing cylinder (2).

8. A liquid volume dosing device as claimed in claim 2, characterized in that the outlet valve (8) is a pneumatic angle seat valve, on which a reversing solenoid valve is arranged, the air hole (62) being connected to the reversing solenoid valve via an air tube.

9. A liquid volumetric dosing device according to claim 1, characterized in that the inlet valve (7) is a pneumatic angle seat valve.

10. A liquid volume dosing device as claimed in claim 1, characterized in that the outlet valve (8) is provided with a non-return valve (81).

11. A liquid volume dosing device as claimed in claim 1, characterized in that the piston (3) comprises a piston body (31) and an O-ring seal (32), the piston body (31) having an annular groove in its outer periphery, the O-ring seal (32) being mounted in the annular groove.