阅读说明：本技术 一种桌面型发泡机 (Desktop type foaming machine ) 是由 孙智勇 张宇 顾珂玮 林王林 姜凯友 周善旻 马佳杰 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种桌面型发泡机,包括混合阀、控制箱和两套上料机构,所述上料机构均由料罐、过滤网、提料泵、伺服电机、压力传感器、单向阀、加热式原料输送管组成。提料泵低压侧通过管道与过滤网相连,过滤网浸没在料罐中,提料泵高压侧压力通过压力传感器反馈给控制箱,控制箱连接伺服电机,控制提料泵高压侧保持设定压力并输出恒定流量。提料泵高压侧出口设置单向阀,单向阀另一侧与加热式原料输送管相连接。控制箱控制加热式原料输送管对物料进行加热。两套上料机构的加热式原料输送管最终和混合阀相连接,物料在混合阀内充分混合后被推出。本发明体积小、轻便、易清洁、易维修、自动化程度高。(The invention discloses a desktop foaming machine which comprises a mixing valve, a control box and two sets of feeding mechanisms, wherein each feeding mechanism consists of a charging bucket, a filter screen, a material lifting pump, a servo motor, a pressure sensor, a one-way valve and a heating type raw material conveying pipe. The low-pressure side of the material lifting pump is connected with the filter screen through a pipeline, the filter screen is immersed in the material tank, the high-pressure side pressure of the material lifting pump is fed back to the control box through the pressure sensor, and the control box is connected with the servo motor and controls the high-pressure side of the material lifting pump to keep set pressure and output constant flow. The outlet of the high-pressure side of the material lifting pump is provided with a check valve, and the other side of the check valve is connected with the heating type raw material conveying pipe. The control box controls the heating type raw material conveying pipe to heat the materials. The heating type raw material conveying pipes of the two feeding mechanisms are finally connected with the mixing valve, and the materials are pushed out after being fully mixed in the mixing valve. The invention has small volume, portability, easy cleaning, easy maintenance and high automation degree.)

1. The utility model provides a desktop type foaming machine which characterized in that:

the device comprises a first charging bucket, a second charging bucket, a first filter screen, a second filter screen, a first material lifting pump, a second material lifting pump, a first servo motor, a second servo motor, a first pressure sensor, a second pressure sensor, a first check valve, a second check valve, a first heating type raw material conveying pipe, a second heating type raw material conveying pipe, a mixing valve and a control box;

the low-pressure sides of the first material lifting pump and the second material lifting pump are connected with a first filter screen and a second filter screen, and the first filter screen and the second filter screen are immersed in the materials in the first material tank and the second material tank;

the pressure of the high-pressure sides of the first material lifting pump and the second material lifting pump is fed back to the control box through the first pressure sensor and the second pressure sensor, and the control box controls the first servo motor and the second servo motor to enable the high-pressure sides of the first material lifting pump and the second material lifting pump to keep set pressure and output constant flow;

the high-pressure sides of the first material lifting pump and the second material lifting pump are connected with the first heating type raw material conveying pipe and the second heating type raw material conveying pipe through a first check valve and a second check valve, and the first heating type raw material conveying pipe and the second heating type raw material conveying pipe are connected with a mixing valve.

2. The table-top foaming machine of claim 1, wherein:

the mixing valve comprises an external shell, an electric push rod, a control electric switch, a plunger valve core, a filter and a mixing cavity;

the outer shell is in a pistol shape, and two sides of the mixing cavity are provided with a throttling hole I and a throttling hole II which are respectively communicated with the filters on the two sides;

an electric push rod is started by a control electric switch, and the electric push rod controls the movement of the plunger valve core to drive the plunger valve core to extend into the mixing cavity and reciprocate; the reciprocating movement of the plunger valve core controls the opening and closing of the throttling holes on the two sides of the mixing cavity, so that the mixing cavity is used for mixing materials and cleaning the mixture attached to the inner wall of the mixing cavity.

3. The table-top foaming machine of claim 1, wherein:

the first material lifting pump and the second material lifting pump are inner-meshing cycloid rotor pumps, and the surfaces of shells of the inner rotor, the outer rotor and the outer rotor are treated by titanium nitride coatings.

4. The table-top foaming machine of claim 1, wherein:

the rotating speeds of the first material lifting pump and the second material lifting pump are controlled by outlet pressure feedback, and the control box controls the outlet pressure of the first material lifting pump and the outlet pressure of the second material lifting pump to be more than 2MPa for high-speed flow of materials.

5. The table-top foaming machine of claim 2, wherein:

the plunger valve core is made of a metal material GCr15, and a chromium nitride aluminum coating is coated on the surface of the plunger valve core; the inner wall material of the mixing cavity adopts polytetrafluoroethylene; and the plunger valve core and the inner wall of the mixing cavity are in interference fit.

6. The table-top foaming machine of claim 2, wherein:

and the included angle between the axes of the throttle hole I and the throttle hole II is 150 degrees.

7. The table-top foaming machine of claim 2, wherein:

and a temperature sensor is arranged below the mixing cavity and used for monitoring the temperature condition in the mixing cavity.

8. The table-top foaming machine of claim 2, wherein:

the filter is connected to the outer shell, and is convenient to disassemble and clean.

Technical Field

The invention particularly relates to a table-top foaming machine.

Background

The foaming machine is mainly used for buffering and packaging high-value fragile products such as various irregular-shaped instruments and equipment, precision machining parts, ceramic glass products and the like and preventing collision and damage in the logistics transportation process. At present, the traditional foaming machine equipment is mainly adopted for domestic packaging, but the traditional foaming machine equipment is heavy, inconvenient to operate and complex in use environment, and a series of problems of material mixing, blockage, difficulty in maintenance and the like often exist in the actual use process. As the domestic desktop type cushioning packaging technology is not mature enough, the desktop type cushioning packaging foaming machine is in great demand in China.

Disclosure of Invention

Aiming at the defects of the technical problems, the invention aims to provide a desktop foaming machine which is light, easy to clean, easy to maintain and high in automation degree.

The invention provides a desktop foaming machine which comprises a mixing valve, a control box and two sets of feeding mechanisms, wherein each feeding mechanism consists of a charging bucket, a filter screen, a material lifting pump, a servo motor, a pressure sensor, a one-way valve and a heating type raw material conveying pipe, and specifically comprises a first charging bucket, a second charging bucket, a first filter screen, a second filter screen, a first material lifting pump, a second material lifting pump, a first servo motor, a second servo motor, a first pressure sensor, a second pressure sensor, a first one-way valve, a second one-way valve, a first heating type raw material conveying pipe and a second heating type raw material conveying pipe. The low-pressure sides of the first material lifting pump and the second material lifting pump are connected with the first filter screen and the second filter screen through pipelines, and the first filter screen and the second filter screen are immersed in the first material tank and the second material tank. The high-pressure side pressure of the first material lifting pump and the high-pressure side pressure of the second material lifting pump are fed back to the control box through the first pressure sensor and the second pressure sensor, and the control box controls the high-pressure side pressure of the first material lifting pump and the high-pressure side pressure of the second material lifting pump to keep a set pressure value and output a constant flow through the first servo motor and the second servo motor. The high pressure sides of the first material lifting pump and the second material lifting pump are connected with the first heating type raw material conveying pipe and the second heating type raw material conveying pipe through a first check valve and a second check valve, and the first heating type raw material conveying pipe and the second heating type raw material conveying pipe are finally connected with a mixing valve.

The mixing valve consists of an external shell, an electric push rod, a control electric switch, a plunger valve core, a filter, a mixing cavity, a temperature sensor and a stop valve core. The outer casing of mixing valve is pistol shape, and the mixing chamber both sides are opened has orifice I, orifice II and is communicated with each other with both sides filter respectively, and the contained angle is 150 between the axis of both sides orifice I, orifice II, and the filter can conveniently be dismantled and wash. The electric push rod is connected with the plunger valve core and controls the plunger valve core to reciprocate in the mixing cavity. The movement of the plunger valve core simultaneously controls the opening degree of the throttling holes at the two sides of the mixing cavity and simultaneously cleans the mixture attached to the inner wall of the mixing cavity.

Furthermore, the first material lifting pump and the second material lifting pump adopt inner meshing cycloid rotor pumps, so that the flow of materials at the outlet of the pump can be kept constant, and the flow pulsation is small. The surfaces of the inner rotor, the outer rotor and the outer rotor shell are subjected to titanium nitride coating treatment, so that the corrosion resistance of the pump is improved.

Furthermore, the rotating speeds of the first material lifting pump and the second material lifting pump are controlled by outlet pressure feedback, so that the outlet pressure of the first material lifting pump and the outlet pressure of the second material lifting pump are ensured to be more than 2MPa, the high-speed flow of materials is kept, and the material mixing effect is improved.

Further, check valves are provided between the outlets of the first and second stripping pumps and the first and second heated feedstock-conveying pipes for preventing pressure leakage.

Further, controlling an electric switch to control an electric push rod to drive a plunger valve core, and opening an AB material valve port to mix materials; the plunger valve core is manufactured by adopting a metal material GCr15, a chromium nitride aluminum coating is coated on the surface of the plunger valve core, and the material of the inner wall of the mixing cavity is polytetrafluoroethylene. By utilizing the elasticity of the polytetrafluoroethylene, the plunger valve core and the inner wall of the mixing cavity are in interference fit, so that the mixture remained on the inner wall of the mixing cavity can be well removed.

Furthermore, the angle between the axes of the throttle holes I and II on the two sides of the mixing cavity is 150 degrees, so that the material mixing effect is better.

Furthermore, the filter of the throttling hole inlet on the mixing valve is connected to the outer shell, so that the filter can be conveniently detached and cleaned.

Furthermore, a temperature sensor is arranged below the mixing cavity, so that the temperature condition in the mixing cavity is monitored, and the fluidity of the mixture is ensured.

The desktop foaming machine has the following beneficial effects:

1. the material lifting pump adopts a cycloid rotor pump, so that the flow of the material at the outlet of the pump can be kept constant, and the flow pulsation is small. The outlet pressure of the material lifting pump is kept above 2MPa, so that the material has a faster flow speed.

2. The residual mixed liquid on the inner wall of the mixing cavity is extruded out of the nozzle by advancing the plunger valve core, so that the inner wall of the mixing cavity is quickly cleaned.

3. The flow channel axes at the two sides of the mixing cavity form an angle of 150 degrees, so that better mixing effect is achieved.

4. Through the operation of PLC controlling means, degree of automation, intellectuality are higher to carry the liquid crystal display interface, have stronger interactivity.

Drawings

FIG. 1 is a general principle schematic of the present invention;

FIG. 2 is a schematic top view of the mixing valve of the present invention;

FIG. 3 is a schematic cross-sectional view of a mixing valve C-C of the present invention;

FIG. 4 is a schematic cross-sectional view of the mixing valve D-D of the present invention;

FIG. 5 is a schematic cross-sectional view of a mixing valve A-A of the present invention;

FIG. 6 is a schematic cross-sectional view of a mixing valve B-B of the present invention.

In the figure: 1. a first charging bucket; 2. a first filter screen; 3. a first material lifting pump; 4. a first servo motor; 5. a first pressure sensor; 6. a first check valve; 7. a first heated feedstock delivery conduit; 8. a control box; 9. a second heated feedstock delivery conduit; 10. a second one-way valve; 11. a second pressure sensor; 12. a second servo motor; 13. a second material lifting pump; 14. a second filter screen; 15. a second charging bucket; 16. a mixing valve; 101. an outer housing; 102. an electric push rod; 103. a temperature sensor; 104. a plunger valve core; 105. a filter; 106. a mixing chamber; 107. a stop valve spool; 108. controlling the electric switch.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 to 6 are combined to show a table-top type foaming machine, fig. 1 is a schematic diagram of the general principle, and fig. 2 to 6 are schematic diagrams of the structure of a mixing valve.

As shown in fig. 1, the table top type foaming machine of the present invention includes a first tank 1 and a second tank 15, a first filter 2 and a second filter 14, a first material pump 3 and a second material pump 13, a first servo motor 4 and a second servo motor 12, a first pressure sensor 5 and a second pressure sensor 11, a first check valve 6 and a second check valve 10, a first heating type raw material delivery pipe 7 and a second heating type raw material delivery pipe 9, a mixing valve 16, and a control box 8.

The low-pressure sides of the first material lifting pump 3 and the second material lifting pump 13 are connected with the first filter screen 2 and the second filter screen 14 through pipelines, and the first filter screen 2 and the second filter screen 14 are immersed in the first material tank 1 and the second material tank 15. The first charging bucket 1 and the second charging bucket 15 are respectively filled with a material A and a material B. The high-pressure side pressures of the first material lifting pump 3 and the second material lifting pump 13 are fed back to the control box 8 through the first pressure sensor 5 and the second pressure sensor 11; the high pressure sides of the first material lifting pump 3 and the second material lifting pump 13 are connected with the first servo motor 4 and the second servo motor 12, and the control box 8 controls the first servo motor 4 and the second servo motor 12 to enable the high pressure sides of the first material lifting pump 3 and the second material lifting pump 13 to keep set pressure and output constant flow. The first and second feed pumps 3 and 13 are connected to the first and second heating type raw material feed pipes 7 and 9 at the high pressure side through first and second check valves 6 and 10, respectively, to prevent pressure leakage. The first heated material transport pipe 7 and the second heated material transport pipe 9 are finally connected to a mixing valve 16.

The first material lifting pump 3 and the second material lifting pump 13 adopt inner meshing cycloid rotor pumps, so that the flow of materials at the outlets of the first material lifting pump 3 and the second material lifting pump 13 can be kept constant, and the flow pulsation is small. The surfaces of the inner rotor, the outer rotor and the outer rotor shell of the internally engaged cycloidal rotor pump are subjected to titanium nitride coating treatment so as to improve the corrosion resistance of the pump. The rotating speeds of the first material lifting pump 3 and the second material lifting pump 13 are controlled by outlet pressure feedback, the control box 8 is controlled by a PLC and has a visual interface with liquid crystal display, the outlet pressure of the material lifting pump is ensured to be more than 2MPa, the high-speed flow of materials is kept, and the material mixing effect is improved.

The inlets of first and second extraction pumps 3, 13 filter the material using first and second filters 2, 14. Heating devices are provided in the first heating type raw material feed pipe 7 and the second heating type raw material feed pipe 9, and the heating temperature is controlled by the control box 8.

As shown in fig. 2 to 6, the mixing valve 16 is composed of an outer housing 101, an electric push rod 102, a temperature sensor 103, a plunger valve spool 104, a filter 105, a mixing chamber 106, a shutoff valve spool 107, and a control electric switch 108. The outer housing 101 of the mixing valve is pistol-shaped for easy handling. As shown in FIG. 5, orifices I and II are respectively arranged on two sides of the mixing chamber 106 and are respectively communicated with the filters 105 on two sides, and the included angle between the axes of the orifices I and II on two sides is 150 degrees, so that the angle between the axes of the flow channels on two sides of the mixing chamber 106 is 150 degrees, and the material mixing effect can be better. The orifice inlet filter 105 is attached to the outer housing 101 for easy removal and cleaning.

As shown in fig. 3, the electric ram 102 in the mixing valve 16 extends into the mixing chamber 106, and the electric ram 102 is connected to the plunger spool 104. The electric push rod 102 is controlled to advance and retract by the electric control switch 108, thereby controlling the plunger spool 104 to reciprocate in the mixing chamber 106. The reciprocating movement of the plunger 104 controls the opening of the orifices on both sides of the mixing chamber 106 for mixing the materials and also cleans the mixture adhering to the inner wall of the mixing chamber 106. The electric push rod 102 and the inner wall of the mixing cavity 106 adopt interference fit.

The shut-off valve spool 107 and the filter 105 are integrated in the valve body of the mixing valve 16, and the outlet of the filter 105 is respectively communicated with the flow passages I and II on the two sides of the mixing cavity 106. Normally, the stop valve spool 107 is in an open state, and when the mixing chamber 106 needs to be cleaned, the stop valve spool 107 is closed, so that AB material cannot enter the flow channel of the mixing chamber 106.

The plunger valve core 104 is manufactured by GCr15, the surface of the plunger valve core is coated with chromium aluminum nitride, and the inner wall of the mixing cavity 106 is made of polytetrafluoroethylene. By utilizing the elasticity of the polytetrafluoroethylene, the plunger valve core 104 and the inner wall of the mixing cavity 106 are in interference fit, so that the mixture remained on the inner wall of the mixing cavity 106 can be well removed.

A temperature sensor 103 is installed below the mixing chamber 106 to monitor the temperature inside the mixing chamber 106 and ensure the fluidity of the mixture.

The working principle of the desktop foaming machine is as follows:

the materials A and the materials B are respectively pumped out of the first material tank 1 and the second material tank 15 by the first material lifting pump 3 and the second material lifting pump 13, filtered by the first filter screen 2 and the second filter screen 14 and enter the first material lifting pump 3 and the second material lifting pump 13.

The control box 8 receives feedback pressure signals of the first pressure sensor 5 and the second pressure sensor 11 which are arranged at the high-pressure side outlets of the first material lifting pump 3 and the second material lifting pump 13, controls the rotating speeds of the first material lifting pump 3 and the second material lifting pump 13 through the first servo motor 4 and the second servo motor 12, controls the flow proportion of the materials A and the materials B according to a set value, and controls the high-pressure side outlet pressures of the first material lifting pump 3 and the second material lifting pump 13 to be more than 2 MPa.

After being discharged from the high-pressure side outlets of the first material lifting pump 3 and the second material lifting pump 13, the materials a and B are sent to the first heating type raw material conveying pipe 7 and the second heating type raw material conveying pipe 9 through the first check valve 6 and the second check valve 10 to be heated, so that the solidification of the materials is prevented, and the material fluidity is improved.

The electric control switch 108 is operated to start the electric push rod 102 to move inwards, the plunger valve core 104 is pushed along with the electric control switch, the throttle holes I and II are opened, and the heated high-pressure material A and the heated high-pressure material B quickly enter the mixing cavity 106 from the throttle holes I and II through the stop valve core 107 and the filter 105 to be fully mixed. After mixing is complete, continued forward advancement of the plunger spool 104 pushes the mixture adhering to the inner wall of the mixing chamber out of the mixing chamber.

Finally, it should also be noted that the above-mentioned list is only one specific embodiment of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.