Automatic proportioning equipment and method for pneumatic liquid injection pump

Abstract

The invention belongs to the technical field of pneumatic liquid injection pumps, and particularly relates to automatic proportioning equipment for a pneumatic liquid injection pump, the automatic proportioning equipment comprises a pump body and a mixing tank connected with the pump body, the pump body comprises a cylinder barrel, two working cylinders are arranged at the two ends of the cylinder barrel, and a main piston is slidably arranged in the cylinder barrel; an auxiliary piston is arranged in the working cylinder in a sliding manner; the using method of the automatic proportioning equipment for the pneumatic liquid injection pump comprises the following steps of adjusting the size of the slurry outlet, discharging slurry components, mixing, pumping slurry and discharging the slurry. The working cylinders are arranged at the two ends of the cylinder barrel, so that slurry discharging and sucking on the two sides are alternately carried out, slurry component discharging control is achieved through rotation of the matching barrel, vibration caused by rotation of the matching barrel can avoid blockage and accelerate component guiding-out, and when the mixing blades rotate, the mixing blades are combined with extrusion of vertical movement of the extrusion disc, so that the mixing efficiency is improved. The shearing and stirring effects are enhanced, so that all the components are quickly and uniformly mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic liquid injection pumps, and in particular to automatic proportioning equipment and a method thereof for pneumatic liquid injection pumps. Background Art

[0002] A pneumatic injection pump is a type of pump device driven by compressed air. It is widely used in industrial fields that require precise injection and liquid transportation. Air is usually used as the power source. The working principle of a compressed gas-driven pneumatic displacement pump mainly relies on the pressure change of the gas to drive the reciprocating motion of the piston. Since there is no electric spark, the device is safer in dangerous environments.

[0003] After searching, Chinese patent CN103410696A discloses a pneumatic double-liquid grouting pump, which belongs to the technical field of electromechanical engineering equipment. Its structure is that the filter is connected to the inlet ball valve, the inlet ball valve is connected to the air motor, the air motor is connected to the piston plate, the piston plate is connected to more than two pistons, the air motor is arranged on the piston frame, each piston is connected to the plunger pump body arranged on the piston frame and corresponding to the piston, the suction end of the plunger pump is provided with an elbow, the pumping end of the plunger pump is connected to a four-way pipe, and the four-way pipe is respectively connected to a seismic-resistant pressure gauge and a ball valve; the left-way high-pressure hose and the right-way high-pressure hose are connected to a Y-type three-way pipe, the Y-type three-way pipe is also connected to a mixing pipe, and the mixing pipe is connected to an injection pipe; but there is a problem that only the adjustment of the output liquid can be completed, and different slurries cannot or are not easy to be mixed in a certain proportion and then pumped out.

[0004] In order to solve the above problems, we propose an automatic proportioning device and method for a pneumatic injection pump. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an automatic proportioning device and method for a pneumatic injection pump.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic proportioning device for a pneumatic liquid injection pump, comprising a pump body and a mixing tank connected to the pump body, the pump body comprising a cylinder, two working cylinders are arranged at both end portions of the cylinder, a main piston is slidably arranged in the cylinder, a secondary piston is slidably arranged in the working cylinder, a piston rod is fixedly connected between the outer wall of the main piston and the secondary piston, a slurry suction one-way valve is installed on the outer wall of the working cylinder, a slurry inlet pipe is connected between the slurry suction one-way valve and the mixing tank, a slurry discharge one-way valve is installed at one end of each working cylinder away from the cylinder, the slurry discharge one-way valve is connected to the slurry discharge pipe, a three-way pipe is connected to the outer wall of the cylinder, the two ends of the three-way pipe are respectively located on both sides of the main piston, and reversing valves are installed on the outer walls of the two ends where the three-way pipe is connected to the cylinder;

[0007] The mixing tank is located on the upper side of the cylinder, the upper side wall of the mixing tank is fixedly connected to a vertical support plate, the upper end of the vertical support plate is fixedly connected to a plurality of liquid storage tanks, the upper side wall of the mixing tank is provided with a slurry inlet, and the lower side walls of the plurality of liquid storage tanks are provided with adjustable slurry outlets.

[0008] In the above-mentioned automatic proportioning equipment for a pneumatic liquid injection pump, the outer wall of the cylinder is fixedly connected to a right-angle support plate, the end of the right-angle support plate is fixedly connected to a motor, the driving end of the motor is fixedly connected to a proportioning barrel, a support column is fixedly connected between the cylinder and the lower side wall of the mixing tank, the outer wall of the cylinder is fixedly connected to the motor, the driving end of the motor extends through the mixing tank and is fixedly connected to a plurality of mixing blades, the proportioning barrel is located between the liquid storage tank and the mixing tank, the lower side wall of the liquid storage tank and the upper side wall of the mixing tank are both provided with an arc-shaped groove that fits the outer wall of the proportioning barrel, and the proportioning barrel is penetrated by a vertical through hole corresponding to each slurry outlet.

[0009] In the above-mentioned automatic proportioning equipment for a pneumatic liquid injection pump, an extrusion disk that can move up and down is arranged in the mixing tank.

[0010] In the above-mentioned automatic proportioning equipment for a pneumatic liquid injection pump, the upper side wall of the extrusion plate is fixedly connected to two connecting rods that penetrate the upper side wall of the mixing tank and are vertically arranged, and a connecting frame is fixedly connected to the outer wall of the upper end of the connecting rod, one end of the connecting frame is located on the lower side of the mixing tank and is provided with a through opening, and the support column is arranged through the through opening, and a magnet plate is fixedly connected to the outer wall of the driving shaft of the motor, and one end of the connecting frame is located on the lower side of the magnet plate and is fixedly embedded with a magnet block.

[0011] In the above-mentioned automatic proportioning device for a pneumatic liquid injection pump, the edge of the upper surface of the extrusion disk is arranged in an arc shape.

[0012] In the above-mentioned automatic proportioning device for a pneumatic liquid injection pump, a telescopic spring sleeved on the outer wall of the support column is fixedly connected between the connection frame and the outer wall of the cylinder.

[0013] A method for using an automatic proportioning device for a pneumatic liquid injection pump comprises the following steps:

[0014] S1, different slurries are placed in different storage tanks;

[0015] S2, when the slurry is discharged and mixed, the pneumatic motor drives the proportioning cylinder to rotate. When the vertical through port corresponds to the slurry outlet, the slurry in the liquid storage tank is discharged into the mixing tank. The slurry outlets of different sizes discharge different amounts of slurry;

[0016] S3, the slurry is mixed in the mixing tank;

[0017] S4, the end of the three-way pipe is connected to the external compressed air source, and the compressed air flows into the left and right sides of the cylinder through the reversing valve, pushing the main piston in the cylinder to move left and right. When the main piston moves to the left, the right working cylinder performs an adsorption movement to suck the mixed slurry in the mixing tank into the working cylinder, and the right working cylinder performs a discharge movement to discharge the slurry sucked into the mixing tank.

[0018] Compared with the existing technology, the advantages of this automatic proportioning equipment for pneumatic injection pump are:

[0019] 1. Working cylinders are set at both ends of the cylinder. After the compressed air flow is introduced into the two ends of the cylinder, the main piston is pushed to move left and right, so that the working cylinders on both sides can perform alternate slurry pumping and discharging movements, thus realizing the continuous slurry discharging and pumping work;

[0020] 2. A rotatable proportioning cylinder and an adjustable slurry outlet are provided. The proportioning cylinder is driven to rotate by a motor. When the slurry outlets are of different sizes and the vertical through-ports correspond to the slurry outlets, different amounts of different slurries are exported to the mixing tank in a single time. The amount of each slurry can be adjusted according to demand, realizing automatic proportioning of the slurry. When the proportioning cylinder rotates to the point where the vertical through-port is offset from the slurry outlet, the discharge of each slurry is stopped, realizing intermittent discharge of the slurry. The single discharge amount is controllable, avoiding the inability to mix evenly due to excessive slurry discharge;

[0021] 3. Set up an extrusion plate. When the motor drive shaft rotates, it drives the magnet plate to rotate. When the magnet plate rotates to the upper side of the magnet block, the magnetic repulsion between the magnet plate and the magnet block pushes the magnet block, the connecting frame, the connecting rod and the extrusion plate to move downward. The extrusion plate squeezes the slurry and the mixing blades stir the slurry, so that the slurry is mixed more fully and thoroughly.

[0022] In summary, the present invention realizes the alternating discharge and suction of slurry on both sides by arranging working cylinders at both ends of the cylinder barrel, and realizes the control of the discharge of slurry components by the rotation of the proportioning barrel. The vibration caused by the rotation of the proportioning barrel can avoid blockage and accelerate the discharge of components. While the mixing blades rotate, combined with the extrusion of the extrusion disk moving up and down, the shear stirring effect is enhanced, so that the components can be quickly and evenly mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front structural schematic diagram of an automatic proportioning device for a pneumatic liquid injection pump proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the back structure of an automatic proportioning device for a pneumatic liquid injection pump proposed by the present invention;

[0025] Figure 3 This is a structural schematic diagram of the connection between a mixing tank and a connection frame in an automatic proportioning device for a pneumatic liquid injection pump proposed by the present invention;

[0026] Figure 4 This is a partial structural schematic diagram of an automatic proportioning device for a pneumatic liquid injection pump proposed by the present invention;

[0027] Figure 5 The present invention provides a schematic structural diagram of the connection between an extrusion disc and a connection frame in an automatic proportioning device for a pneumatic liquid injection pump.

[0028] In the figure: 1 cylinder barrel, 2 working cylinder, 3 slurry outlet pipe, 4 three-way pipe, 5 reversing valve, 6 main piston, 7 piston rod, 8 telescopic spring, 9 mixing tank, 10 motor, 11 right-angle support plate, 12 motor, 13 proportioning cylinder, 14 liquid storage tank, 15 vertical through port, 16 vertical support plate, 17 connecting rod, 18 extrusion plate, 19 connecting frame, 20 supporting column, 21 slurry inlet pipe, 22 through port, 23 slurry inlet. DETAILED DESCRIPTION

[0029] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] Reference Figure 1-Figure 5 , an automatic proportioning device for a pneumatic liquid injection pump, comprising a pump body and a mixing tank 9 connected to the pump body, the pump body comprising a cylinder 1, two working cylinders 2 are arranged at both ends of the cylinder 1, a main piston 6 is slidably arranged in the cylinder 1, a secondary piston is slidably arranged in the working cylinder 2, a piston rod 7 is fixedly connected between the outer wall of the main piston 6 and the secondary piston, a slurry suction one-way valve is installed on the outer wall of the working cylinder 2, a slurry inlet pipe 21 is connected between the slurry suction one-way valve and the mixing tank 9, a slurry discharge one-way valve is installed at one end of each working cylinder 2 away from the cylinder 1, the slurry discharge one-way valve is connected to the slurry discharge pipe 3, a three-way pipe 4 is connected to the outer wall of the cylinder 1, the two ends of the three-way pipe 4 are respectively located on both sides of the main piston 6, a reversing valve 5 is installed on the outer walls of the two ends connected to the cylinder 1, and the end of the three-way pipe 4 is connected to an external compressed air source, and the compressed air source includes but is not limited to a compressed air source. Compressor, etc., through the adjustment of the reversing valve 5, the compressed air source can be connected with the two ends of the cylinder 1. After the compressed air enters the right side of the cylinder 1, the air pushes the main piston 6 to move to the left, and drives the auxiliary piston on the left to move to the left through the piston rod 7. The working cylinder 2 on the left performs a discharge motion to squeeze and discharge the slurry in the working cylinder 2 on the left, and the auxiliary piston on the left moves to the right, so that the working cylinder 2 on the right performs a slurry suction motion, and the slurry in the mixing tank 9 is sucked into the working cylinder 2 through the slurry inlet pipe 21, and then the compressed air enters the left side of the cylinder 1 through the adjustment of the reversing valve 5, and the air flow on the right side of the cylinder 1 is discharged. At this time, the working cylinder 2 on the left performs a slurry suction motion, and the working cylinder 2 on the right performs a slurry discharge motion. Through the continuous work of the above, the working cylinders 2 on both sides alternately perform the slurry suction and slurry discharge work, thereby realizing continuous work.

[0031] Most pneumatic pumps use air from an air compressor at a factory or equipment site. The compressor compresses the air and stores it in a gas tank, which is then delivered to the pneumatic pump via a pipeline. This type of air source is commonly found in industrial environments, such as chemical plants, food processing plants, water treatment facilities, etc.

[0032] Further explanation, to ensure stable operation, the connection between the three-way pipe 4 and the external air source can also be connected with a gas triplex. The gas triplex is a device used in the pneumatic system to pre-treat, regulate and filter compressed air. It usually consists of three parts: a filter, a pressure regulator and a lubricator. These three parts work together to ensure that the pneumatic system can operate stably and efficiently. The role of the gas triplex is to provide a clean, stable and lubricated air source to provide high-quality air for pneumatic equipment.

[0033] The reversing valve 5 in the pneumatic injection pump is usually a key component for controlling the direction of air flow. The function of the reversing valve 5 is to change the direction of the air flow, so that the diaphragm or piston of the pneumatic pump reciprocates to promote the delivery of liquid or slurry.

[0034] The mixing tank 9 is located on the upper side of the cylinder 1, and the upper side wall of the mixing tank 9 is fixedly connected to a vertical support plate 16, and the upper end of the vertical support plate 16 is fixedly connected to a plurality of liquid storage tanks 14. A slurry inlet 23 is provided on the upper side wall of the mixing tank 9, and an adjustable slurry outlet is provided on the lower side walls of the plurality of liquid storage tanks 14. The size of the slurry outlet can be adjusted by a valve or other device with adjustable outlet size. Slurries such as reinforcing agents and water plugging agents can be stored in the liquid storage tank 14. The slurry mixed in the mixing tank 9 needs to account for a larger proportion, and the adjustable slurry outlet can be enlarged. Similarly, the slurry that accounts for a smaller proportion can adjust the corresponding slurry outlet to be reduced. Then, the amount of slurry discharged through the slurry outlet is also different.

[0035] Furthermore, the diameter of the vertical through opening 15 is much larger than the diameter of the pulp outlet.

[0036] The outer wall of the cylinder 1 is fixedly connected to a right-angle support plate 11, the end of the right-angle support plate 11 is fixedly connected to a motor 12, the driving end of the motor 12 is fixedly connected to a proportioning barrel 13, a support column 20 is fixedly connected between the cylinder 1 and the lower side wall of the mixing tank 9, the outer wall of the cylinder 1 is fixedly connected to a motor 10, the driving end of the motor 10 extends through and extends into the mixing tank 9 and is fixedly connected to a plurality of mixing blades, the proportioning barrel 13 is located between the liquid storage tank 14 and the mixing tank 9, and the lower side wall of the liquid storage tank 14 and The upper side walls of the mixing tank 9 are provided with arc-shaped grooves that fit with the outer wall of the proportioning tube 13. The proportioning tube 13 is penetrated by a vertical through hole 15 corresponding to each slurry outlet. The motor 12 drives the proportioning tube 13 to rotate along the outer walls of the two arc-shaped grooves. When the vertical through hole 15 corresponds to the slurry outlet, different amounts of different slurries are discharged into the mixing tank 9 in a single time. The amount of each slurry can be adjusted according to demand, and then the mixing blades are driven by the motor 10 to stir and mix the slurry.

[0037] The mixing tank 9 is provided with an extrusion plate 18 that can move up and down. The upper side wall of the extrusion plate 18 is fixedly connected with two connecting rods 17 that penetrate the upper side wall of the mixing tank 9 and are vertically arranged. A connecting frame 19 is fixedly connected to the outer wall of the upper end of the connecting rod 17. One end of the connecting frame 19 is located at the lower side of the mixing tank 9 and is provided with a through hole 22. The support column 20 is arranged through the through hole 22. A magnet plate is fixedly connected to the outer wall of the driving shaft of the motor 10. One end of the connecting frame 19 is located at the lower side of the magnet plate and is fixedly embedded with a magnet block. The upper edge of the pressure plate 18 is arranged in an arc shape, and a telescopic spring 8 sleeved on the outer wall of the support column 20 is fixedly connected between the connecting frame 19 and the outer wall of the cylinder 1. When the motor 10 drives the shaft to rotate, the magnet plate is driven to rotate. When the magnet plate rotates to the upper side of the magnet block, the magnetic repulsion between the magnet plate and the magnet block pushes the magnet block, the connecting frame 19, the connecting rod 17 and the extrusion plate 18 to move downward. The extrusion plate 18 squeezes the slurry, so that the mixing blade cuts the slurry more thoroughly.

[0038] Further, the diameter of the extrusion disk 18 is smaller than the inner diameter of the mixing tank 9;

[0039] It is further explained that the squeezing disc 18 does not contact the mixing blades during the up and down movement, and the connecting frame 19 is always located at the lower side of the magnet plate during the up and down movement;

[0040] To further explain, an opening is provided at the connection between the vertical support plate 16 and the connecting frame 19, and the end of the connecting frame 19 moves up and down in the opening. The opening can also limit the height of the connecting frame 19 to ensure that the extrusion disk 18 does not come into contact with the mixing blades during the up and down movement, thereby protecting the normal operation of the equipment.

[0041] A method for using an automatic proportioning device for a pneumatic liquid injection pump comprises the following steps:

[0042] S1, different slurries are respectively contained in different liquid storage tanks 14;

[0043] S2, when the slurry is discharged and mixed, the pneumatic motor 12 drives the proportioning cylinder 13 to rotate. When the vertical through port 15 corresponds to the slurry outlet, the slurry in the liquid storage tank 14 is discharged into the mixing tank 9. The slurry outlets of different sizes discharge different amounts of slurry;

[0044] S3, the slurry is mixed in the mixing tank 9;

[0045] S4, the end of the three-way pipe 4 is connected to the external compressed air source, and the compressed air flow flows into the left and right sides of the cylinder 1 through the reversing valve 5, pushing the main piston 6 in the cylinder 1 to move left and right. When the main piston 6 moves to the left, the right working cylinder 2 performs an adsorption movement to suck the mixed slurry in the mixing tank 9 into the working cylinder 2, and the right working cylinder 2 performs a discharge movement to discharge the slurry sucked into the mixing tank 9.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic proportioning device for a pneumatic liquid injection pump, comprising a pump body and a mixing tank (9) connected to the pump body, characterized in that: The pump body comprises a cylinder barrel (1), two working cylinders (2) are arranged at both ends of the cylinder barrel (1), a main piston (6) is slidably arranged in the cylinder barrel (1), a secondary piston is slidably arranged in the working cylinder (2), a piston rod (7) is fixedly connected between the outer wall of the main piston (6) and the secondary piston, a slurry suction one-way valve is installed on the outer wall of the working cylinder (2), a slurry inlet pipe (21) is connected between the slurry suction one-way valve and the mixing tank (9), a slurry discharge one-way valve is installed at one end of each working cylinder (2) away from the cylinder barrel (1), and the slurry discharge one-way valve is connected to the slurry discharge pipe (3), a three-way pipe (4) is connected to the outer wall of the cylinder barrel (1), the two ends of the three-way pipe (4) are respectively located on both sides of the main piston (6), and a reversing valve (5) is installed on the outer walls of both ends of the three-way pipe (4) connected to the cylinder barrel (1); The mixing tank (9) is located on the upper side of the cylinder (1); the upper side wall of the mixing tank (9) is fixedly connected to a vertical support plate (16); the upper end of the vertical support plate (16) is fixedly connected to a plurality of liquid storage tanks (14); the upper side wall of the mixing tank (9) is provided with a slurry inlet (23); and the lower side walls of the plurality of liquid storage tanks (14) are provided with adjustable slurry outlets.

2. The automatic proportioning device for a pneumatic liquid injection pump according to claim 1, characterized in that: The outer wall of the cylinder barrel (1) is fixedly connected to a right-angle support plate (11), the end of the right-angle support plate (11) is fixedly connected to a motor (12), the driving end of the motor (12) is fixedly connected to a proportioning barrel (13), a support column (20) is fixedly connected between the cylinder barrel (1) and the lower side wall of the mixing tank (9), the outer wall of the cylinder barrel (1) is fixedly connected to a motor (10), the driving end of the motor (10) extends through and into the mixing tank (9) and is fixedly connected to a plurality of mixing blades, the proportioning barrel (13) is located between the liquid storage tank (14) and the mixing tank (9), the lower side wall of the liquid storage tank (14) and the upper side wall of the mixing tank (9) are both provided with an arc-shaped groove that fits the outer wall of the proportioning barrel (13), and a vertical through hole (15) corresponding to each slurry outlet is provided through the proportioning barrel (13).

3. The automatic proportioning device for a pneumatic liquid injection pump according to claim 2, characterized in that: The mixing tank (9) is provided with an extrusion plate (18) which can move up and down.

4. The automatic proportioning device for a pneumatic liquid injection pump according to claim 3, characterized in that: The upper side wall of the extrusion plate (18) is fixedly connected to two connecting rods (17) that penetrate the upper side wall of the mixing tank (9) and are vertically arranged. The upper end outer wall of the connecting rod (17) is fixedly connected to a connecting frame (19). One end of the connecting frame (19) is located at the lower side of the mixing tank (9) and is provided with a through hole (22). The support column (20) is arranged through the through hole (22). The outer wall of the driving shaft of the motor (10) is fixedly connected to a magnet plate. One end of the connecting frame (19) is located at the lower side of the magnet plate and is fixedly embedded with a magnet block.

5. The automatic proportioning device for a pneumatic liquid injection pump according to claim 3, characterized in that: The edge of the upper surface of the squeezing disk (18) is arranged in an arc shape.

6. The automatic proportioning device for a pneumatic liquid injection pump according to claim 4, characterized in that: A telescopic spring (8) sleeved on the outer wall of the support column (20) is fixedly connected between the connection frame (19) and the outer wall of the cylinder barrel (1).

7. A method for using the automatic proportioning device for a pneumatic liquid injection pump according to claim 2, characterized in that: The following steps are involved: S1, different slurries are respectively contained in different liquid storage tanks (14); S2, when the slurry is discharged and mixed, the pneumatic motor (12) drives the proportioning cylinder (13) to rotate, and when the vertical through port (15) corresponds to the slurry outlet, the slurry in the liquid storage tank (14) is discharged and falls into the mixing tank (9), and different sizes of slurry outlets discharge different amounts of slurry; S3, the slurry is mixed in the mixing tank (9); S4, the end of the three-way pipe (4) is connected to an external compressed air source, and the compressed air flows into the left and right sides of the cylinder (1) through the reversing valve (5), pushing the main piston (6) in the cylinder (1) to move left and right. When the main piston (6) moves to the left, the right working cylinder (2) performs an adsorption movement to suck the mixed slurry in the mixing tank (9) into the working cylinder (2), and the right working cylinder (2) performs a discharge movement to discharge the slurry sucked into the mixing tank (9).

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