CN118579388B - Liquid holding vessel discharge mechanism and chelating agent storage device - Google Patents

Abstract

The present invention discloses a liquid storage tank discharge mechanism and a chelating agent storage device, which relates to the technical field of storage devices, and includes a first discharge mechanism arranged in a storage tank body with a top cover, the first discharge mechanism is used to discharge the liquid stored in the storage tank body at a uniform speed by squeezing the liquid upward; a second discharge mechanism is arranged in the storage tank body; the second discharge mechanism includes a telescopic hose and an end plate; a guide sleeve and a piston plate form a second liquid storage cavity, and the telescopic hose passes through the piston plate and is plugged into the guide sleeve. The present invention arranges a first discharge mechanism, that is, when the liquid in the storage tank body is discharged, the first discharge mechanism is used to squeeze the liquid in the storage tank body upward, so that the liquid is discharged from the top, which can reduce the influence of gravity on the discharge of the liquid, so that the pressure of the liquid during discharge is kept relatively constant, and then the uniform discharge of the liquid can be controlled, and the purpose of highly accurate control of the liquid discharge dosage can be achieved.

Description

A liquid storage tank discharge mechanism and chelating agent storage device

Technical Field

The invention relates to the technical field of storage devices, and in particular to a liquid storage tank discharge mechanism and a chelating agent storage device.

Background Art

Industrial liquid storage tanks are common equipment in many industries such as chemical, pharmaceutical, food, petroleum, water treatment, etc., used to store various liquid raw materials, intermediates, finished products or wastewater. For example, in the chemical industry, for industrial processes that require immediate processing or highly accurate dosage control, chelating agents are mostly stored in liquid form.

Existing chelating agent storage tanks generally include a tank body, a feed port and a discharge port. The discharge port is arranged near the bottom of the tank body and is sealed by a valve. When in use, the valve is opened and detected by a flow meter to control the amount of chelating agent used.

However, the above storage tank still has the following defects:

The liquid in the storage tank exerts a large pressure on the discharge port, which affects the sealing and is not conducive to storage;

When the liquid is discharged through the discharge port, as the liquid in the storage tank decreases, the pressure in the storage tank changes greatly, the liquid flow rate changes, and the liquid cannot be discharged at a uniform speed, which easily causes bubbles to form when the liquid is discharged from the discharge port. At this time, it is difficult to obtain the accurate flow rate through the flow meter, so it is difficult to achieve highly accurate dosage control.

Summary of the invention

In order to overcome the above technical problems, the purpose of the present invention is to provide a liquid storage tank discharge mechanism and a chelating agent storage device to solve the problem mentioned in the above background technology that bubbles are easily generated when the liquid is discharged from the tank body and it is difficult to accurately control the discharge dosage.

The purpose of the present invention can be achieved through the following technical solutions:

A liquid storage tank discharge mechanism comprises a first discharge mechanism arranged in a storage tank body with a top cover, wherein the first discharge mechanism is used to discharge the liquid stored in the storage tank body at a uniform speed by squeezing the liquid upward.

Preferably, the first outlet mechanism comprises a piston plate and a driving mechanism; the piston plate is slidably connected to the storage tank body, the storage tank body and the top of the piston plate form a first liquid storage cavity, the driving mechanism is arranged on the storage tank body, the storage tank body and the bottom of the piston plate form a pressure cavity, and the output end of the driving mechanism is connected to the pressure cavity;

The top cover is provided with a liquid guide hole, and the liquid guide hole is used to realize the introduction and export of liquid. The top cover is detachably provided with a liquid guide tube, and the liquid guide tube is connected with the first liquid storage cavity through the liquid guide hole.

Preferably, the driving mechanism includes a telescopic airbag, a delivery pipe and an air pump; the air pump is installed on the storage tank body, the telescopic airbag is arranged in the pressure chamber, and the top end of the telescopic airbag is in contact with the piston plate, and the output end of the air pump is connected to the telescopic airbag through the delivery pipe.

Preferably, a one-way valve is provided at the bottom end of the storage tank body; when negative pressure is generated in the pressure chamber, the one-way valve is driven to open, so that the pressure chamber is connected to the outside.

Preferably, a pressure relief mechanism is provided on the storage tank body; the pressure relief mechanism comprises a mounting block with a first through hole, a push rod and a first handle; the mounting block is threadedly connected to the storage tank body, a push rod is provided inside the mounting block, the push rod is coaxially arranged with the one-way valve, and the outer diameter of the push rod is smaller than the inner diameter of the one-way valve; when the mounting block moves toward the one-way valve, the push rod can push the one-way valve to open;

The first handle is disposed on the mounting block, and the first handle is used to drive the mounting block to rotate.

Preferably, a guide mechanism is provided in the storage tank body; the guide mechanism comprises a telescopic rod, the telescopic rod is provided in the telescopic airbag, and the telescopic end of the telescopic rod is connected to the piston plate.

Preferably, the guide mechanism also includes a guide sleeve arranged in the pressure chamber, the top of the guide sleeve is connected to the piston plate, the outer diameter of the guide sleeve is the same as the diameter of the piston plate, and the guide sleeve is arranged on the telescopic airbag; the height of the guide sleeve is greater than the height of the telescopic airbag when it is in an extreme compression state.

Preferably, a second outlet mechanism is provided in the storage tank body; the second outlet mechanism includes a telescopic hose and an end plate; the guide sleeve and the piston plate form a second liquid storage chamber, the telescopic hose passes through the piston plate and is inserted into the guide sleeve, and one end of the telescopic hose is arranged close to the bottom inner wall of the guide sleeve, and the other end of the telescopic hose is clamped in the liquid guide hole through the end plate, the diameter of the telescopic hose is smaller than the aperture of the liquid guide hole, the telescopic hose is fixed to the piston plate, a second through hole is provided on the piston plate, and the piston plate is connected with the guide sleeve through the second through hole.

Preferably, a sealing mechanism is provided on the storage tank body; the sealing mechanism comprises a mounting seat, a limiting ring with a sealing ring and a plug with a second handle; the mounting seat is provided on the top cover, and the mounting seat is coaxially arranged with the liquid guide hole, the liquid guide tube is installed on the mounting seat, the limiting ring is provided in the mounting seat, and the outer diameter of the limiting ring is the same as the inner diameter of the mounting seat, the sealing ring is coaxially sleeved on the top of the limiting ring, the outer diameter of the telescopic hose is smaller than the inner diameter of the limiting ring, one end of the telescopic hose passes through the limiting ring and is connected to the end plate with the third through hole; when the telescopic hose is straightened, the end plate contacts the sealing ring on the limiting ring, and the third through hole is blocked by the sealing ring;

The end plate is provided with a fourth through hole coaxial with the telescopic hose, and the plug is pluggable and arranged in the fourth through hole; the plug is used to seal the fourth through hole.

A chelating agent storage device comprises a storage tank body with a top cover and the liquid storage tank discharge mechanism.

Beneficial effects of the present invention:

1. By setting a first outlet mechanism, that is, when the liquid in the storage tank body is discharged, the first outlet mechanism is used to squeeze the liquid in the storage tank body upward so that the liquid is discharged from the top, which can reduce the influence of gravity on the liquid discharge, so that the pressure of the liquid during discharge remains relatively constant, thereby achieving the purpose of controlling the uniform speed and uniform discharge of the liquid, and achieving the purpose of highly accurate control of the liquid discharge dosage;

2. By setting a second outlet mechanism and a second liquid storage chamber, the liquid storage capacity in the storage tank body can be increased without affecting the outlet work of the liquid in the first liquid storage chamber; first, the port of the telescopic hose close to the liquid guide hole is in a blocked state and filled with liquid. When the liquid in the telescopic hose needs to be outlet, the piston plate is pushed up to drive the telescopic hose to move upward and extend out of the liquid guide hole, and then the telescopic hose is bent downward so that the height of the blocked port of the telescopic hose is lower than the bottom of the guide sleeve, and then the blockage of the telescopic hose port is released. At this time, under the siphon effect, the liquid in the second liquid storage chamber is outlet through the telescopic hose, so that the liquid can be quickly and automatically outlet, and the convenience of liquid outlet is improved;

3. By setting up a sealing mechanism, when the piston plate moves to the bottom of the storage tank body, the telescopic hose is stretched, causing the telescopic hose to generate a downward pulling force on the end plate, thereby causing the end plate to collide with the sealing ring on the limit ring to achieve sealing. At the same time, the port of the telescopic hose is sealed by a plug to achieve the purpose of sealing the liquid guide hole. When the piston plate moves to the bottom, the sealing work is automatically achieved, and the pulling force of the piston plate on the telescopic hose is used to maintain a good sealing state; and when the piston plate moves upward to squeeze out the liquid, the sealing structure will automatically open, and there is no need to manually open and close the seal, thereby improving the convenience of use.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings.

FIG1 is a schematic diagram of the overall three-dimensional structure of the present invention from a first viewing angle;

FIG2 is a schematic diagram of the overall three-dimensional structure of the present invention from a second viewing angle;

FIG3 is a schematic diagram of a three-dimensional structure of a storage tank body partially cut away from a first viewing angle according to the present invention;

FIG4 is a schematic diagram of a three-dimensional enlarged structure of a mounting block according to the present invention;

FIG5 is a schematic diagram of a partially cutaway three-dimensional structure of a storage tank body according to the present invention from a second viewing angle;

FIG6 is a partially cutaway three-dimensional structural schematic diagram of the driving mechanism of the present invention;

FIG7 is a schematic diagram of a three-dimensional enlarged structure of area A in FIG6 of the present invention;

FIG. 8 is a partially cutaway, three-dimensional, enlarged structural schematic diagram of the sealing mechanism of the present invention.

In the figure: 1. storage tank body; 2. top cover; 3. first lead-out mechanism; 31. piston plate; 32. first liquid storage chamber; 33. liquid guide tube; 34. driving mechanism; 341. telescopic airbag; 342. delivery pipe; 343. air pump; 35. one-way valve; 36. pressure relief mechanism; 361. mounting block; 362. first through hole; 363. push rod; 364. first handle; 37. guide mechanism; 371. telescopic rod; 372. guide sleeve; 38. second lead-out mechanism; 381. second liquid storage chamber; 382. telescopic hose; 383. second through hole; 384. end plate; 39. sealing mechanism; 391. mounting seat; 392. limit ring; 393. sealing ring; 394. third through hole; 395. plug; 396. second handle.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in Figures 1-8, a liquid storage tank discharge mechanism, as shown in Figure 1-2, includes a first discharge mechanism 3 arranged in a storage tank body 1 with a top cover 2, and the first discharge mechanism 3 is used to uniformly discharge the liquid stored in the storage tank body 1.

It should be noted that when the liquid in the storage tank body 1 is discharged, the first discharge mechanism 3 is used to squeeze the liquid in the storage tank body 1 upward so that the liquid is discharged from the top, which can reduce the influence of gravity on the discharge of the liquid, so that the pressure of the liquid during discharge remains relatively constant, thereby achieving the control of the liquid to be discharged at a uniform speed and evenly, reducing the generation of bubbles, so as to achieve the purpose of highly accurate control of the liquid discharge dosage.

As shown in Figures 1-3, the first export mechanism 3 includes a piston plate 31 and a driving mechanism 34; the piston plate 31 is slidably connected in the storage tank body 1, the storage tank body 1 and the top of the piston plate 31 form a first liquid storage chamber 32, the driving mechanism 34 is arranged on the storage tank body 1, the storage tank body 1 and the bottom of the piston plate 31 form a pressure chamber, and the output end of the driving mechanism 34 is connected to the pressure chamber; a liquid guide hole is provided on the top cover 2, and the liquid guide hole is used to realize the introduction and export of liquid, and a liquid guide tube 33 is detachably provided on the top cover 2, and the liquid guide tube 33 is connected to the first liquid storage chamber 32 through the liquid guide hole.

It should be noted that when a certain amount of liquid in the storage tank body 1 needs to be discharged, the piston plate 31 is pushed upward by the driving mechanism 34, so that the piston plate 31 squeezes the liquid in the first liquid storage chamber 32 upward, and then the liquid is discharged through the liquid guide tube 33. By controlling the piston plate 31 to move upward to control the pressure of the liquid discharged from the liquid guide hole to be consistent, the purpose of controlling the uniform speed and uniform discharge of the liquid is achieved, and the generation of bubbles when the liquid is discharged is reduced. At this time, the liquid discharge dosage can be accurately detected by the flow meter, which is convenient for accurately controlling the liquid discharge dosage.

As shown in Figures 1-3 and 6, the driving mechanism 34 includes a telescopic airbag 341, a delivery pipe 342 and an air pump 343; the air pump 343 is installed on the storage tank body 1, the telescopic airbag 341 is arranged in the pressure chamber, and the top of the telescopic airbag 341 is in contact with the piston plate 31, and the output end of the air pump 343 is connected to the telescopic airbag 341 through the delivery pipe 342.

It should be noted that the air pump 343 is used to inflate the telescopic airbag 341, so that the external gas is introduced into the telescopic airbag 341 through the delivery tube 342, so that the air pressure in the telescopic airbag 341 increases. When the air pressure is greater than the sum of the weight of the liquid in the storage tank body 1, the weight of the piston plate 31, and the friction between the piston plate 31 and the storage tank body 1, the telescopic airbag 341 expands and pushes the piston plate 31 upward, so that the piston plate 31 moves upward in the storage tank body 1, so that the piston plate 31 squeezes the liquid upward, so that the liquid is discharged from the liquid guide tube 33.

By setting the driving mechanism 34, the telescopic airbag 341 occupies less space when it shrinks and resets, so that the storage tank body 1 can store more liquid. By setting the driving mechanism 34 with a pneumatic structure, the overall space occupancy is reduced, which is convenient for use.

As shown in Figures 1-4, a one-way valve 35 is provided at the bottom end of the storage tank body 1; when negative pressure is generated in the pressure chamber, the one-way valve 35 is driven to open, so that the pressure chamber is connected to the outside; a pressure relief mechanism 36 is provided on the storage tank body 1; the pressure relief mechanism 36 includes a mounting block 361 with a first through hole 362, a push rod 363 and a first handle 364; the mounting block 361 is threadedly connected to the storage tank body 1, and a push rod 363 is provided in the mounting block 361, the push rod 363 is coaxially arranged with the one-way valve 35, and the outer diameter of the push rod 363 is smaller than the inner diameter of the one-way valve 35; when the mounting block 361 moves toward the one-way valve 35, the push rod 363 can push the one-way valve 35 to open; the first handle 364 is provided on the mounting block 361, and the first handle 364 is used to drive the mounting block 361 to rotate.

It should be noted that when the driving mechanism 34 drives the piston plate 31 to move upward, negative pressure is generated in the pressure chamber, and the one-way valve 35 is automatically opened by the negative pressure to introduce outside air into the pressure chamber without affecting the normal upward movement of the piston plate 31; and when the piston plate 31 moves to a certain height, the piston plate 31 is pushed down by gravity, so that positive pressure is generated in the pressure chamber, and then the one-way valve 35 is closed until the pressure in the pressure chamber can support the piston plate 31 to stop descending. At this time, through the support of the pressure chamber, with the quantitative discharge of the liquid in the storage tank body 1 each time, the first liquid storage chamber 32 can maintain a relatively full state of liquid, which is beneficial to the next liquid discharge work. At the same time, the pressure chamber supports the piston plate 31, reduces the force on the telescopic airbag 341, and protects the telescopic airbag 341 to prevent the piston plate 31 from suddenly falling due to problems such as leakage of the telescopic airbag 341, and has high safety performance.

When liquid needs to be introduced into the first liquid storage chamber 32, the first handle 364 is used to rotate the mounting block 361, which drives the first handle 364 to push the one-way valve 35 to open, so that the gas in the pressure chamber passes through the one-way valve 35 and is discharged from the first through hole 362 to achieve pressure relief. By controlling the number of turns of the rotating mounting block 361 and the axial self-locking characteristics of the mounting block 361 thread, the opening amplitude of the one-way valve 35 is controlled, and then the pressure relief speed of the pressure chamber is controlled, so as to achieve the purpose of controlling the slow descent of the piston plate 31 and improve the safety of use. After the piston plate 31 descends to the bottom of the storage tank body 1, the mounting block 361 is rotated in the opposite direction to reset the one-way valve 35 without affecting the normal use of the one-way valve 35.

As shown in FIGS. 1-3 , a guide mechanism 37 is disposed in the storage tank body 1 ; the guide mechanism 37 includes a telescopic rod 371 , which is disposed in the telescopic airbag 341 , and a telescopic end of the telescopic rod 371 is connected to the piston plate 31 .

It should be noted that, in the process of introducing high-pressure air into the telescopic airbag 341, as the telescopic airbag 341 expands, the telescopic rod 371 provides a guide for the telescopic airbag 341 to extend upward, thereby preventing the telescopic airbag 341 from tilting due to excessive pressure from the piston plate 31 and the liquid; at the same time, in the process of the telescopic airbag 341 expanding upward and pushing the piston plate 31 to move upward, the telescopic rod 371 provides a guide for the movement of the piston plate 31, thereby preventing the piston plate 31 from tilting due to uneven force, so that when the piston plate 31 moves upward, a good sealing effect can be maintained between the piston plate 31 and the storage tank body 1, thereby preventing liquid leakage;

When liquid accidentally leaks through the piston plate 31, the liquid will not flow out directly to the outside and will not pollute the environment. The liquid will flow into the pressure chamber, and will not be discharged until the pressure relief mechanism 36 is opened, thereby preventing the problem of pollution caused by direct discharge of the liquid. At the same time, a humidity sensor can be installed on the mounting block 361. When the humidity of the air discharged from the mounting block 361 is high, it is judged that the sealing effect of the piston plate 31 has deteriorated and needs to be replaced and maintained, thereby further improving the safety and convenience of use. The humidity sensor is a prior art and is not shown in the figure and will not be described in detail.

As shown in Figures 3 and 6, the guide mechanism 37 also includes a guide sleeve 372 arranged in the pressure chamber, the top of the guide sleeve 372 is connected to the piston plate 31, the outer diameter of the guide sleeve 372 is the same as the diameter of the piston plate 31, and the guide sleeve 372 is sleeved on the telescopic airbag 341; the height of the guide sleeve 372 is greater than the height of the telescopic airbag 341 when it is in the extreme compression state.

It should be noted that, in order to further prevent the piston plate 31 from tilting and improve the sealing between the piston plate 31 and the inner wall of the storage tank body 1 (as shown in FIG. 1 ) when the piston plate 31 is lifted or lowered, a guide sleeve 372 is provided to guide the lifting of the piston plate 31, thereby further reducing the problem of the piston plate 31 tilting when it is lifted or lowered; at the same time, through the provision of the guide sleeve 372, a sealing structure can be sleeved on the guide sleeve 372 to improve the sealing effect when the piston plate 31 moves, thereby reducing the risk of liquid leakage into the pressure chamber;

At the same time, since the height of the guide sleeve 372 is greater than the height of the telescopic airbag 341 when it is in the extreme compression state, that is, when the telescopic airbag 341 has not yet shrunk to the extreme state, the bottom of the guide sleeve 372 first contacts the bottom of the storage tank body 1, and the guide sleeve 372 provides a supporting force. When the storage tank body 1 is filled with liquid, the guide sleeve 372 provides the main supporting force, thereby reducing the squeezing of the telescopic airbag 341 and achieving the protection of the telescopic airbag 341.

As shown in FIGS. 5-7 , a second outlet mechanism 38 is provided in the storage tank body 1 (as shown in FIG. 1 ); the second outlet mechanism 38 includes a telescopic hose 382 and an end plate 384; the guide sleeve 372 and the piston plate 31 form a second liquid storage chamber 381, the telescopic hose 382 passes through the piston plate 31 and is inserted into the guide sleeve 372, and one end of the telescopic hose 382 is arranged near the bottom inner wall of the guide sleeve 372, and the other end of the telescopic hose 382 is clamped in the liquid guide hole through the end plate 384, the diameter of the telescopic hose 382 is smaller than the aperture of the liquid guide hole, the telescopic hose 382 is fixed to the piston plate 31, a second through hole 383 is provided on the piston plate 31, and the piston plate 31 is connected with the guide sleeve 372 through the second through hole 383.

It should be noted that, by setting up the second liquid storage chamber 381, the liquid storage capacity in the storage tank body 1 can be increased without affecting the dewatering of the liquid in the first liquid storage chamber 32; first, the port of the telescopic hose 382 close to the liquid guide hole is in a blocked state and is filled with liquid. When the liquid in the telescopic hose 382 needs to be dewatered, the piston plate 31 is pushed up to drive the telescopic hose 382 to move upward and extend out of the liquid guide hole. The telescopic hose 382 is then bent downward so that the height of the blocked port of the telescopic hose 382 is lower than the bottom of the guide sleeve 372. The blockage of the port of the telescopic hose 382 is then released. At this time, under the siphon effect, the liquid in the second liquid storage chamber 381 is dewatered through the telescopic hose 382, thereby realizing the rapid and automatic dewatering of the liquid and improving the convenience of liquid dewatering.

As shown in FIGS. 6-8, a sealing mechanism 39 is provided on the storage tank body 1 (as shown in FIG. 1); the sealing mechanism 39 includes a mounting seat 391, a limiting ring 392 with a sealing ring 393, and a plug 395 with a second handle 396; the mounting seat 391 is provided on the top cover 2 (as shown in FIG. 1), and the mounting seat 391 is coaxially arranged with the liquid guide hole, the liquid guide tube 33 is installed on the mounting seat 391, the limiting ring 392 is arranged in the mounting seat 391, and the outer diameter of the limiting ring 392 is the same as the inner diameter of the mounting seat 391, and the sealing ring 393 is coaxially sleeved. At the top of the limiting ring 392, the outer diameter of the telescopic hose 382 is smaller than the inner diameter of the limiting ring 392, and one end of the telescopic hose 382 passes through the limiting ring 392 and is connected to the end plate 384 with the third through hole 394; when the telescopic hose 382 is straightened, the end plate 384 contacts the sealing ring 393 on the limiting ring 392, and the third through hole 394 is blocked by the sealing ring 393; a fourth through hole coaxial with the telescopic hose 382 is opened on the end plate 384, and a plug 395 is pluggable and arranged in the fourth through hole; the plug 395 is used to block the fourth through hole.

It should be noted that when the first liquid storage chamber 32 (as shown in FIG. 3 ) and the second liquid storage chamber 381 are filled with liquid, the piston plate 31 (as shown in FIG. 5 ) moves to the bottom of the storage tank body 1, so that the telescopic hose 382 is stretched, so that the telescopic hose 382 exerts a downward pulling force on the end plate 384, and then the end plate 384 contacts the sealing ring 393 on the limit ring 392 to achieve sealing. At the same time, the end of the telescopic hose 382 is sealed by the plug 395 to achieve the purpose of sealing the liquid guide hole, so that when the piston plate 31 moves to the bottom, the self- The sealing work is realized automatically, and a good sealing state is maintained through the pulling force of the piston plate 31 on the telescopic hose 382; and when the piston plate 31 moves upward to squeeze out the liquid, the sealing structure will automatically open, and there is no need to manually open and close the seal, thereby improving the convenience of use; when the piston plate 31 moves upward, the telescopic hose 382 restores its length and moves upward, driving the end plate 384 and the sealing ring 393 away, so that the liquid passes through the gap between the telescopic hose 382 and the limit ring 392 and is discharged from the third through hole 394, thereby realizing the purpose of automatic liquid discharge.

As shown in Figures 1-8, a chelating agent storage device includes a storage tank body 1 with a top cover 2 and a liquid storage tank discharge mechanism; wherein the specific structure of the storage tank body 1 with the top cover 2 is the prior art and will not be described in detail here.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims (9)

1. A liquid storage tank discharge mechanism, characterized in that it comprises a first discharge mechanism (3) arranged in a storage tank body (1) with a top cover (2); the first discharge mechanism (3) is used to discharge the liquid stored in the storage tank body (1) at a uniform speed by squeezing the liquid upward; The first outlet mechanism (3) comprises a piston plate (31) and a driving mechanism (34); the piston plate (31) is slidably connected to the storage tank body (1); the top of the piston plate (31) and the storage tank body (1) form a first liquid storage chamber (32); the bottom of the piston plate (31) and the storage tank body (1) form a pressure chamber; the driving mechanism (34) is arranged on the storage tank body (1); the output end of the driving mechanism (34) is connected to the pressure chamber; the driving mechanism (34) is used to drive the piston plate (31) to slide up and down so as to adjust the air pressure of the pressure chamber, and when the piston plate (31) slides upward, it is used to discharge the liquid in the first liquid storage chamber (32) through the liquid guide hole on the top cover (2); A guide mechanism (37) is provided in the storage tank body (1); the guide mechanism (37) comprises a guide sleeve (372) provided in the pressure chamber; A second outlet mechanism (38) is provided in the storage tank body (1); the second outlet mechanism (38) comprises a telescopic hose (382) and an end plate (384); the top of the guide sleeve (372) is connected to the piston plate (31); the guide sleeve (372) and the piston plate (31) enclose a second liquid storage chamber (381); the telescopic hose (382) passes through the piston plate (31) and is plugged into the guide sleeve (372); one end of the telescopic hose (382) is arranged close to the inner wall of the bottom of the guide sleeve (372); the other end of the telescopic hose (382) is clamped into the liquid guide hole through the end plate (384); the diameter of the telescopic hose (382) is smaller than the diameter of the liquid guide hole; the telescopic hose (382) is fixed to the piston plate (31); a second through hole (383) is provided on the piston plate (31); and the piston plate (31) is connected to the guide sleeve (372) through the second through hole (383); The port of the telescopic hose (382) near the liquid guide hole is in a blocked state and is filled with liquid. When the liquid in the telescopic hose (382) needs to be discharged, the piston plate (31) is pushed upward to drive the telescopic hose (382) to move upward and extend out of the liquid guide hole. The telescopic hose (382) is then bent downward so that the height of the blocked port of the telescopic hose (382) is lower than the bottom of the guide sleeve (372). The blockage of the port of the telescopic hose (382) is then released. At this time, under the siphon effect, the liquid in the second liquid storage chamber (381) is discharged through the telescopic hose (382). 2. A liquid storage tank discharge mechanism according to claim 1, characterized in that the driving mechanism (34) comprises a telescopic airbag (341), a delivery pipe (342) and an air pump (343); the air pump (343) is installed on the storage tank body (1), the telescopic airbag (341) is arranged in the pressure chamber, and the top end of the telescopic airbag (341) is in contact with the piston plate (31), and the output end of the air pump (343) is connected to the telescopic airbag (341) through the delivery pipe (342). 3. A liquid storage tank discharge mechanism according to claim 1, characterized in that a one-way valve (35) is provided at the bottom end of the storage tank body (1); when negative pressure is generated in the pressure chamber, the one-way valve (35) is driven to open, so that the pressure chamber is connected to the outside. 4. A liquid storage tank discharge mechanism according to claim 3, characterized in that a pressure relief mechanism (36) is provided on the storage tank body (1); the pressure relief mechanism (36) comprises a mounting block (361) with a first through hole (362), a push rod (363) and a first handle (364); the mounting block (361) is threadedly connected to the storage tank body (1), a push rod (363) is provided inside the mounting block (361), the push rod (363) is coaxially arranged with the one-way valve (35), and the outer diameter of the push rod (363) is smaller than the inner diameter of the one-way valve (35); when the mounting block (361) moves toward the one-way valve (35), the push rod (363) can push the one-way valve (35) to open; The first handle (364) is arranged on the mounting block (361), and the first handle (364) is used to drive the mounting block (361) to rotate. 5. A liquid storage tank discharge mechanism according to claim 2, characterized in that the guide mechanism (37) further comprises a telescopic rod (371), the telescopic rod (371) is arranged in the telescopic airbag (341), and the telescopic end of the telescopic rod (371) is connected to the piston plate (31). 6. A liquid storage tank discharge mechanism according to claim 5, characterized in that the outer diameter of the guide sleeve (372) is the same as the diameter of the piston plate (31), and the guide sleeve (372) is sleeved on the telescopic airbag (341); the height of the guide sleeve (372) is greater than the height of the telescopic airbag (341) when it is in an extreme compression state. 7. A liquid storage tank discharge mechanism according to claim 1, characterized in that a liquid guide tube (33) is detachably provided on the top cover (2), and the liquid guide tube (33) is connected to the first liquid storage chamber (32) through a liquid guide hole. 8. A liquid storage tank discharge mechanism according to claim 7, characterized in that a sealing mechanism (39) is provided on the storage tank body (1); the sealing mechanism (39) comprises a mounting seat (391), a limiting ring (392) with a sealing ring (393), and a plug (395) with a second handle (396); the mounting seat (391) is provided on the top cover (2), and the mounting seat (391) is coaxially arranged with the liquid guide hole, the liquid guide tube (33) is installed on the mounting seat (391), and the limiting ring (392) is provided on the mounting seat (391). The outer diameter of the limit ring (392) is the same as the inner diameter of the mounting seat (391); the sealing ring (393) is coaxially sleeved on the top of the limit ring (392); the outer diameter of the telescopic hose (382) is smaller than the inner diameter of the limit ring (392); one end of the telescopic hose (382) passes through the limit ring (392) and is connected to an end plate (384) with a third through hole (394); when the telescopic hose (382) is stretched straight, the end plate (384) contacts the sealing ring (393) on the limit ring (392), and the third through hole (394) is blocked by the sealing ring (393); The end plate (384) is provided with a fourth through hole coaxial with the telescopic hose (382), and the plug (395) is pluggable and arranged in the fourth through hole; the plug (395) is used to seal the fourth through hole. 9. A chelating agent storage device, characterized in that it comprises a storage tank body (1) with a top cover (2) and a liquid storage tank discharge mechanism according to any one of claims 1 to 8.