CN204824089U - Low dose of automatic allocation machine of high accuracy waterborne and solvent -borne type liquid - Google Patents

Abstract

A small-dose automatic dispensing machine for high-precision water-based and solvent-based liquids. The dispensing machine includes a frame, a distribution valve group, an electronic scale, and a liquid storage tank. There are guide rails in the horizontal direction of the frame, and sliding connections are made on the guide rails. The mobile frame is driven and slid by the motor provided at one end of the guide rail. The distribution valve group is fixedly installed on the mobile frame, and the electronic scale is fixed on the frame. Sliding directly above, the liquid storage tanks communicate with corresponding valve bodies in the distribution valve group respectively. Use electronic balance to form a computer record format for color samples. Now it is very convenient to query the data records of the assigned color paste, which is convenient for color reproduction and mass production. For different ingredients, different feeding systems and different distribution valves are used. The lifting of the sealing box seals the valve port so that the ingredients do not dry out. To solve the problems that are prone to inaccurate ingredients, imperfect process records, and high manual labor intensity.

Description

A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine

technical field

The utility model relates to a small-dose automatic dispensing machine for high-precision water-based and solvent-based liquids.

Background technique

A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine, used for automatic distribution of high-precision small-dose liquids in factories or laboratories, can quickly and accurately dispense the dosage required by customers, and can be used for sample preparation in leather production and ink mixing samples Production, sample production of printing and dyeing paste, etc. When it comes to small sample production, it is often prepared manually with electronic scales, straws, etc., which is prone to inaccurate ingredients, imperfect process records, and labor-intensive problems. There is an urgent need for a high-precision water-based and solvent-based liquid. The dosage automatic dispensing machine is used to solve the problems of inaccurate ingredients, imperfect process records and high manual labor intensity.

Contents of the invention

The purpose of the utility model is a high-precision water-based and solvent-based liquid small-dose automatic dispensing machine to solve the problems of inaccurate ingredients, imperfect process records and high labor intensity.

The utility model adopts the following technical solutions:

A small-dose automatic dispensing machine for high-precision water-based and solvent-based liquids, including a frame (1), a dispensing valve group (2), an electronic scale (3), a liquid storage tank (4), and a control system,

A guide rail (11) is horizontally arranged in the frame (1), and a mobile frame (12) is slidably connected on the guide rail (11). drive slide;

The distribution valve group (2) is fixedly arranged on the moving frame (12), and the distribution valve group (2) is formed by a plurality of distribution valves (21) arranged horizontally and fixedly arranged on the moving frame through a mounting frame , the distribution valve (21) is a syringe structure, the upper end of the pull rod (26) of the distribution valve (21) syringe is linked by the piston rod of the speed regulating cylinder (22), and the speed regulating cylinder (22) is fixed on On the moving frame (12), the side of the syringe is provided with a liquid inlet (23), and the bottom is provided with a liquid outlet (24) communicating with the interior of the syringe;

An electronic scale (3) is fixed on the frame, the distribution valve group (2) slides directly above the electronic scale (3), and the liquid storage tank (4) arranged on the frame (1) ) are respectively connected with the liquid inlets (23) of the corresponding distribution valves in the distribution valve group;

The electronic scale (3) and distribution valve (21) are connected to the control system.

The dispensing valve comprises a micro-dispensing valve (201);

The middle part of the micro-dispensing valve divides the syringe into an upper and a lower inner cavity through a partition (25). The lower inner cavity contains the dispensing liquid, and the pull rod (26) is located In the inner cavity, it is slidably connected with the upper end of the syringe, and the bottom end of the pull rod fixes the piston head (27), and the piston head (27) fits and slides with the upper inner cavity. The pull rod sleeve spring (28) between the piston heads, the bottom of the piston head (27) is provided with a long rod type valve needle (29), and the valve needle (29) passes through the partition plate (25) and enters the The inner cavity of the lower layer, the valve needle (29) is slidingly connected with the partition (25), the bottom end of the syringe is provided with the liquid outlet (24) communicating with the inner cavity of the lower layer, the valve needle (29) The end seals the liquid outlet (24), the top of the pull rod (26) fixes the upper slider, and the upper slider is stuck in the piston chamber of the speed regulating cylinder (22), the The piston of the speed regulating cylinder (22) is fixed on the upper end of the piston cavity;

The liquid inlet is arranged on one side of the inner cavity of the lower layer, and a liquid return port (30) is arranged on the opposite side of the liquid inlet of the syringe and communicates with the inner cavity of the lower layer of the syringe.

Said liquid outlet (24) of said micro-dispensing valve has a minimum diameter of 0.8 mm.

The distribution valve includes a large number of distribution valves; the syringe of the large number of distribution valves has a closed inner cavity, the pull rod (26) is slidably connected to the top of the syringe, and the pull rod is located in the inner cavity The piston head (27) is fixed at the bottom end of the pull rod, and a spring (28) is sleeved between the pull rod and the piston head, and the piston head closes the liquid outlet (24) at the bottom of the syringe, so The side of the syringe is provided with the liquid inlet (23);

The upper slider is fixed on the top of the pull rod, and the upper slider is stuck in the piston chamber of the speed regulating cylinder (22), and the piston of the speed regulating cylinder (22) is fixed on the upper end of the piston chamber .

The liquid outlet (24) of the bulk dispense valve is 13 mm in diameter.

The external nitrogen input pipeline connects the pressure regulating valve (101) and the manual valve (102) in series, and connects to the upper end of the liquid storage tank (4), and the liquid outlet of the liquid storage tank (4) is connected in series through the pipeline. The manual ball valve (103) and the T-type filter valve (104) are connected to the liquid inlet (23) of the micro-dispensing valve (201).

The liquid outlet of the liquid storage tank is connected to the liquid inlet (23) of the micro-dispensing valve in sequence through a pipeline in series with a manual ball valve (103), a T-shaped filter (104), and a pneumatic diaphragm pump (105). The liquid return port (30) of the distributing valve (201) is connected in series with the manual ball valve (103) to return to the upper end of the liquid storage tank to form a circuit.

A sealing box (5) is arranged below the moving frame, and the sealing box (5) is vertically slidably connected by a guide rail;

The bottom of the sealing box is driven to move up and down by an electric push rod, and when the push rod moves up, the needle port of the distribution valve is immersed in the sealing box.

The top surface of the sealed box is provided with a rubber skin (6).

The utility model has the following advantages:

1. The electronic scale is used to weigh the ingredients, and the color sample is formed into a computer record format, which can easily query the data records of the allocated color paste, which is convenient for color reproduction and mass production.

2. According to the different viscosities of the ingredients, different feeding systems and different distribution valves are used to effectively and accurately batch the ingredients.

3. The sealing box is raised to seal the needle port so that the needle port does not dry out.

Description of drawings:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of the driving structure of the mobile frame of the present utility model;

Fig. 3 is a structural schematic diagram of the micro-dispensing valve of the present invention;

Fig. 4 is a structural schematic diagram of a large number of distribution valves of the present invention;

Fig. 5 is a schematic diagram of the connection relationship between the liquid storage tank and the distribution valve of the utility model for water-based or low-viscosity slurry;

Fig. 6 is a schematic diagram of the connection relationship between the volatile or high-viscosity slurry liquid storage tank and the distribution valve of the utility model;

Fig. 7 is a structural schematic diagram of the sealing box of the present invention;

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

The following examples are only examples of the utility model, rather than limiting the implementation of the utility model. For those of ordinary skill in the art, on the basis of the following descriptions, other different forms of changes or changes can be made, and these obvious changes or changes that belong to the spirit of the present invention are still protected by the present invention within range.

A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine, including a frame 1, a dispensing valve group 2, an electronic scale 3, a liquid storage tank 4, and a control system,

A guide rail 11 is horizontally arranged in the frame 1, and the guide rail 11 is slidably connected with a movable frame 12, and the movable frame 12 is driven and slid by a motor 13 provided at one end of the guide rail 11;

The distribution valve group 2 is fixedly arranged on the moving frame 12, and the distribution valve group 2 is formed by a plurality of distribution valves 21 arranged horizontally and fixedly arranged on the moving frame through a mounting frame. The distribution valves 21 are needle Barrel structure, the upper end of the pull rod 26 of the syringe of the distribution valve 21 is linked by the piston rod of the speed regulating cylinder 22, the speed regulating cylinder 22 is fixed on the moving frame 12, and the side of the syringe is provided with a liquid inlet 23 , The bottom is provided with a liquid outlet 24 communicating with the interior of the syringe;

The frame is fixed with an electronic scale 3, the distribution valve group 2 slides directly above the electronic scale 3, and the liquid storage tank 4 provided on the frame 1 is respectively connected to the distribution valve group. Said liquid inlet 23 of the corresponding dispensing valve is connected;

The electronic scale 3 and distribution valve 21 are connected to the control system.

The dispensing valve comprises a micro-dispensing valve 201;

The middle part of the micro-dispensing valve divides the syringe into an upper and a lower inner cavity through a partition 25. The lower inner cavity contains the dispensing liquid, and the pull rod 26 is located in the upper inner cavity. Slidingly connected with the upper end of the syringe, the bottom end of the pull rod fixes the piston head 27, the piston head 27 fits and slides with the upper inner cavity, and the pull rod between the top of the upper inner cavity and the piston head is socketed Spring 28, the bottom of the piston head 27 is provided with a long-rod valve needle 29, the valve needle 29 passes through the partition plate 25 and enters the inner chamber of the lower layer, and the valve needle 29 is slidably connected with the partition plate 25 , the bottom end of the syringe is provided with the liquid outlet 24 communicating with the inner cavity of the lower layer, the end of the valve needle 29 closes the liquid outlet 24, the top of the pull rod 26 is fixed with an upper slider, and the upper The slider is stuck in the piston chamber of the speed regulating cylinder 22, and the piston of the speed regulating cylinder 22 is fixed on the upper end of the piston chamber;

The liquid inlet is arranged on one side of the inner cavity of the lower layer, and the liquid return port 30 is arranged on the opposite side of the liquid inlet of the syringe and communicates with the inner cavity of the lower layer of the syringe.

The liquid outlet 24 of the micro-dispensing valve has a minimum diameter of 0.8mm.

The distribution valve includes a large number of distribution valves; the syringe of the large number of distribution valves has a closed inner cavity, the pull rod 26 is slidably connected to the top of the syringe, and the pull rod is located in the inner cavity, The piston head 27 is fixed at the bottom end of the pull rod, a spring 28 is sleeved between the pull rod and the piston head, the piston head closes the liquid outlet 24 at the bottom of the syringe, and the side of the syringe is provided with the Liquid inlet 23;

The top of the pull rod is fixed with an upper slider, and the upper slider is stuck in the piston chamber of the speed-regulating cylinder 22, and the piston of the speed-regulating cylinder 22 is fixed at the upper end of the piston chamber.

The liquid outlet 24 of the bulk dispense valve is 13mm in diameter.

The external nitrogen input pipeline connects the pressure regulating valve 101 and the manual valve 102 in series, and connects to the upper end of the liquid storage tank 4, and the liquid outlet of the liquid storage tank 4 is connected in series with the manual ball valve 103 and the T-shaped filter valve through the pipeline. 104 is connected to the liquid inlet 23 of the micro-dispensing valve 201 .

The liquid outlet of the liquid storage tank is connected to the liquid inlet 23 of the micro-dispensing valve in series through a pipeline in series with a manual ball valve 103, a T-shaped filter 104, and a pneumatic diaphragm pump 105, and the liquid return port 30 of the micro-dispensing valve 201 It is connected in series with the manual ball valve 103 back to the upper end of the liquid storage tank to form a circuit.

A sealing box 5 is arranged below the moving frame, and the sealing box 5 is vertically slidably connected by a guide rail;

The bottom of the sealing box is driven to move up and down by an electric push rod, and when the push rod moves up, the needle port of the distribution valve is immersed in the sealing box.

The top surface of the sealed box is provided with a rubber skin 6 .

The specific use process is as follows: first, the control system selects the distribution plan on the computer, then downloads the data to the PLC, and executes the batching program. For water-based or low-viscosity slurry (viscosity less than 6000 centipoise), batching is carried out through the above-mentioned circuit method. The main reason for batching in this way is that the flow rate of batching is too fast and it is difficult to control the flow of batching. For solvent-based, volatile or high-viscosity slurry (viscosity greater than 6000 centipoise), the slurry in the pressure tank can be squeezed onto the distribution head by nitrogen pressurization; if it is the large number of distribution valves The ingredients are directly supplied by an external pump. The micro-dispensing valve and the large-dose dispensing valve slide on the guide rail 11 through the moving frame 12, and the distributing valves that need to be discharged are moved to the container placed directly above the electronic scale 3 for batching. In order to prevent the needle port of the micro-dispensing valve from being blocked and dried up, after each distribution is completed, the sealing box 5 is raised, the sealing box 5 is provided with a rubber skin 6, and water or solvent is installed inside, and the micro-dispensing needle The mouth is immersed in the sealing box 5, because the highly saturated water vapor or solvent gas can be kept in the sealing box for a long time, thereby avoiding the dryness of the slurry and the blockage of the needle port.

The syringe rod of the dispensing valve is pulled by the speed-regulating cylinder to control the flow rate of the liquid, so as to accurately control the precision. When the speed regulating cylinder 22 is lifted upwards, the lifting rod 26 moves upwards, and when the piston head 27 of the large quantity dispensing valve or the valve needle 29 of the microdispensing valve leaves the liquid outlet, the ingredients can flow down. The micro-dispensing valve has only one flow rate, and the speed regulating cylinder 22 has only one stroke displacement. The control of the dispensing volume is realized by the rapid lifting and falling of the cylinder;

The mass distribution valve has two flow rates, so the governor cylinder 22 has two stroke displacements. The speed-regulating cylinder action pulls up 5mm, and the piston 27 is separated from the liquid outlet 24, and the discharge flow rate is relatively slow at this moment. When the speed-regulating cylinder 22 is pulled upwards by 10 mm, the piston 27 and the liquid outlet 24 are separated by a relatively large gap, and the discharge flow rate is the fastest at this time. Since the spring 28 in the distributing valve always pulls the piston to move downward during the telescopic process of the cylinder, it is very fast when closing, which improves the distributing accuracy.

Claims (9)

1. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine, comprising a frame (1), a distribution valve group (2), an electronic scale (3), a liquid storage tank (4), and a control system, characterized in that : A guide rail (11) is horizontally arranged in the frame (1), and a mobile frame (12) is slidably connected on the guide rail (11). drive slide; The distribution valve group (2) is fixedly arranged on the moving frame (12), and the distribution valve group (2) is formed by a plurality of distribution valves (21) arranged horizontally and fixedly arranged on the moving frame through a mounting frame , the distribution valve (21) is a syringe structure, the upper end of the pull rod (26) of the distribution valve (21) syringe is linked by the piston rod of the speed regulating cylinder (22), and the speed regulating cylinder (22) is fixed on On the moving frame (12), the side of the syringe is provided with a liquid inlet (23), and the bottom is provided with a liquid outlet (24) communicating with the interior of the syringe; An electronic scale (3) is fixed on the frame, the distribution valve group (2) slides directly above the electronic scale (3), and the liquid storage tank (4) arranged on the frame (1) ) are respectively connected with the liquid inlets (23) of the corresponding distribution valves in the distribution valve group; The electronic scale (3) and distribution valve (21) are connected to the control system. 2. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 1, characterized in that: The dispensing valve comprises a micro-dispensing valve (201); The middle part of the micro-dispensing valve divides the syringe into an upper and a lower inner cavity through a partition (25). The lower inner cavity contains the dispensing liquid, and the pull rod (26) is located In the inner cavity, it is slidably connected with the upper end of the syringe, and the bottom end of the pull rod fixes the piston head (27), and the piston head (27) fits and slides with the upper inner cavity. The pull rod sleeve spring (28) between the piston heads, the bottom of the piston head (27) is provided with a long rod type valve needle (29), and the valve needle (29) passes through the partition plate (25) and enters the The inner cavity of the lower layer, the valve needle (29) is slidingly connected with the partition (25), the bottom end of the syringe is provided with the liquid outlet (24) communicating with the inner cavity of the lower layer, the valve needle (29) The end seals the liquid outlet (24), the top of the pull rod (26) fixes the upper slider, and the upper slider is stuck in the piston chamber of the speed regulating cylinder (22), the The piston of the speed regulating cylinder (22) is fixed on the upper end of the piston chamber; The liquid inlet is arranged on one side of the inner cavity of the lower layer, and a liquid return port (30) is arranged on the opposite side of the liquid inlet of the syringe and communicates with the inner cavity of the lower layer of the syringe. 3. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 2, characterized in that: the minimum diameter of the liquid outlet (24) of the micro-dispensing valve is 0.8mm. 4. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 1, characterized in that: The distribution valve includes a large number of distribution valves; the syringe of the large number of distribution valves has a closed inner cavity, the pull rod (26) is slidably connected to the top of the syringe, and the pull rod is located in the inner cavity The piston head (27) is fixed at the bottom end of the pull rod, and a spring (28) is sleeved between the pull rod and the piston head, and the piston head closes the liquid outlet (24) at the bottom of the syringe, so The side of the syringe is provided with the liquid inlet (23); The upper slider is fixed on the top of the pull rod, and the upper slider is stuck in the piston chamber of the speed regulating cylinder (22), and the piston of the speed regulating cylinder (22) is fixed on the upper end of the piston chamber . 5. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 4, characterized in that: the diameter of the liquid outlet (24) of the large-volume dispensing valve is 13mm. 6. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 2, characterized in that: The external nitrogen input pipeline connects the pressure regulating valve (101) and the manual valve (102) in series, and connects to the upper end of the liquid storage tank (4), and the liquid outlet of the liquid storage tank (4) is connected in series through the pipeline. The manual ball valve (103) and the T-type filter valve (104) are connected to the liquid inlet (23) of the micro-dispensing valve (201). 7. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 2, characterized in that: The liquid outlet of the liquid storage tank is connected to the liquid inlet (23) of the micro-dispensing valve in sequence through a pipeline in series with a manual ball valve (103), a T-shaped filter (104), and a pneumatic diaphragm pump (105). The liquid return port (30) of the distributing valve (201) is connected in series with the manual ball valve (103) to return to the upper end of the liquid storage tank to form a circuit. 8. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 1, characterized in that: A sealing box (5) is arranged below the moving frame, and the sealing box (5) is vertically slidably connected by a guide rail; The bottom of the sealing box is driven to move up and down by an electric push rod, and when the push rod moves up, the needle port of the distribution valve is immersed in the sealing box. 9. A high-precision water-based and solvent-based liquid small-dose automatic dispensing machine according to claim 8, characterized in that: The top surface of the sealed box is provided with a rubber skin (6).