A continuous feeding pneumatic mixer with humidification function

Abstract

The present invention discloses a continuous feeding pneumatic mixer with humidification function, comprising a mixer tank body, a dust removal device and an atomizing mixing device, a feeding port of a feeding pneumatic butterfly valve is installed on the side wall of the mixer tank body, one or more dust removal devices are arranged on the top of the mixer tank body, an air intake ring pipe and a liquid adding ring pipe are arranged on the outside of the mixer tank body, a conical discharge valve is arranged at the bottom of the mixer tank body, the bottom end of the mixer tank body is connected to a discharge cone bucket through an upper flange and a lower flange in sequence, the discharge cone bucket is connected to the discharge port through a discharge pneumatic butterfly valve and a flange, the input end of the atomizing mixing device is respectively connected to the air intake ring pipe and the liquid adding ring pipe, and the output end of the atomizing mixing device is fixed on the lower flange and communicated with the mixer tank body. The present invention effectively solves the problem of continuous feeding of pneumatic mixers, can control the movement of internal airflow and spray liquid, ensures that the powder is not destroyed during humidification mixing, and is suitable for humidification mixing that requires continuous feeding in industries such as medicine, food, feed, and chemical industry.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic mixers, in particular to a continuous feeding pneumatic mixer with a humidifying function. Background Art

[0002] Pneumatic mixers that use compressed air as stirring power have been developed in recent years. They reduce equipment costs because they do not require mechanical stirring components such as blades and mixing arms, and there will be no wear and blockage problems during mixing. Therefore, pneumatic mixers are more popular among people.

[0003] In the fields of medicine, food, etc., liquid needs to be added during powder mixing, which cannot guarantee that the morphology of the mixed powder will not be destroyed. In addition, the feeding during mixing is intermittent, and the mixing of powder materials (single or multiple materials) cannot be achieved.

[0004] In view of this, it is necessary to develop a continuous feeding pneumatic mixer with humidification function. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a continuous feeding pneumatic mixer with humidification function, which adopts a liquid atomization mixing device to add liquid into the mixer tank in an atomized state through a nozzle, and a silo top dust collector is arranged on the top of the mixer to achieve continuous feeding through control.

[0006] The present invention discloses a continuous feeding pneumatic mixer with humidification function, which adopts the following technical scheme: it includes a mixer tank body, a dust removal device and an atomizing mixing device, a feed port is provided on the side wall of the mixer tank body, a feed pneumatic butterfly valve is installed on the feed port, one or more dust removal devices are provided on the top of the mixer tank body, an air intake ring pipe and a liquid adding ring pipe are sleeved on the outer periphery of the mixer tank body, the air intake ring pipe is externally connected to a compressed air source, a conical discharge valve is provided at the bottom center of the mixer tank body, the bottom end of the mixer tank body is connected to a discharge cone hopper through an upper flange and a lower flange in sequence, the discharge cone hopper is connected to the discharge port through a discharge pneumatic butterfly valve and a flange, the input end of the atomizing mixing device is respectively connected to the air intake ring pipe and the liquid adding ring pipe, and the output end of the atomizing mixing device is fixed on the lower flange and communicated with the mixer tank body.

[0007] Furthermore, there is more than one dust removal device, and the dust removal device includes a silo top dust collector, an induced draft valve, a blow pipe, a pulse solenoid valve, an air bag and a filter. The silo top dust collector is installed on the top of the mixer tank body, and the filter is located in the mixer tank body and connected to the bottom end of the silo top dust collector. The top of the silo top dust collector is provided with an induced draft valve, and a blow pipe is provided on the lower side of the induced draft valve. The blow pipe is connected to the pulse solenoid valve, and the pulse solenoid valve is connected to the air bag below, and the air bag is connected to an auxiliary air source.

[0008] Furthermore, the atomizing mixing device includes a liquid adding solenoid valve, an outer sleeve, an inner sleeve, a cone sleeve, a cylinder and a liquid spraying component. The upper end of the cylinder is connected to the liquid spraying component through a quick-opening chuck. The side wall of the cylinder is provided with an opening connected to the cone sleeve. One end of the outer sleeve is connected to the cone sleeve, and the other end of the outer sleeve is connected to the quick-connect chuck and the blind plate chuck in sequence. An inner sleeve is provided in the outer sleeve, and a one-way valve with one end passing through the blind plate chuck is provided in the center of the inner sleeve. The other end of the one-way valve is connected to the liquid adding solenoid valve through a double external thread connector, and an air inlet hole is provided on the side wall of the outer sleeve.

[0009] Furthermore, the liquid spray component includes a nozzle, a nozzle seat ring, a sealing plug, a bolt and a nut. The bolt vertically penetrates the quick-open chuck and is threadedly connected to the nut. The bottom of the bolt is connected to the piston end of the cylinder. A spring washer is provided between the cylinder piston end and the nut. A sealing plug is provided on the outer periphery of the top end of the bolt. A tightening ring is provided on the sealing plug. A nozzle seat ring is provided above the tightening ring. The lower end of the nozzle penetrates the center of the nozzle seat ring and is fixedly connected to the tightening ring.

[0010] Furthermore, it also includes a nozzle sealing ring, which is sleeved on the lower end of the nozzle and located between the nozzle seat ring and the fixing screw ring.

[0011] Furthermore, a sealing ring is provided at the bottom of the cylinder piston end.

[0012] Furthermore, the air intake ring pipe is an annular pipe, a ring pipe air inlet is provided on the air intake ring pipe, an air intake flange is provided on the ring pipe air inlet, and a plurality of ring pipe air outlets are evenly provided on the pipe wall of the air intake ring pipe along its circumference.

[0013] Furthermore, the liquid-adding ring pipe is an annular pipe, a liquid inlet is arranged on the liquid-adding ring pipe, and a plurality of ring pipe liquid outlets are evenly arranged on the side wall of the liquid-adding ring pipe along its circumference.

[0014] Furthermore, a sight glass is provided on the side wall of the mixer tank.

[0015] In the present invention, there is more than one dust removal device on the top of the pneumatic mixer. After the induced draft valve of one of the dust removal devices is opened, the feed port is opened, and the dust collector on the top of the silo starts to remove dust. Then the induced draft valve of the next dust removal device is opened, and the dust collector on the top of the silo starts to remove dust. In this cycle, the powder of the mixer can be continuously fed.

[0016] After the compressed air source enters the mixer tank through the air inlet ring 17, it spirally rises along the cylinder wall to form a fluidized mixing state. After several pulse blowing and pause intervals, the materials in the full volume can be quickly and evenly mixed. The liquid material is sprayed into the mixer tank by the atomizing mixing device 22. When humidification is not required, it can work like the original pneumatic mixer. If the material needs to be humidified, humidification can be achieved by adjusting the switch of the atomizing mixing device 22.

[0017] The beneficial effects of the present invention are as follows: the powder enters the mixer from the feed port, and continuous feeding is achieved by controlling the first and second silo top dust collectors; before the filling liquid enters the mixer tank, an atomizing mixing device is provided to ensure that the filling liquid is fully atomized when entering the mixer, and the particle size of the liquid particles is small enough and uniform, and the powder morphology will not be destroyed; the mixer can continuously feed without stopping to achieve continuous mixing, which effectively solves the problem of continuous feeding of the pneumatic mixer, can control the internal airflow and the movement of the spray liquid, and ensures that the powder is not destroyed during humidification mixing, and is suitable for humidification mixing that requires continuous feeding in the pharmaceutical, food, feed, chemical and other industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a continuous feeding pneumatic mixer with humidification function.

[0020] Figure 2 It is a schematic diagram of the structure of the atomizing mixing device.

[0021] Figure 3 This is a schematic diagram of the intake ring pipe structure from a top view.

[0022] Figure 4 It is a schematic diagram of the structure of the liquid inlet ring pipe from a top view.

[0023] In the figure: 1-feeding port, 2-feeding pneumatic butterfly valve, 3-draft valve 1, 4-silo top dust collector 1, 5-injection pipe 1, 6-pulse solenoid valve 1, 7-air bag 1, 8-filter 1, 9-draft valve 2, 10-silo top dust collector 2, 11-injection pipe 2, 12-pulse solenoid valve 2, 13-air bag 2, 14-filter 2, 15-sight glass, 16-conical discharge valve, 17-intake ring pipe, 171-ring pipe air inlet, 172-ring pipe air outlet, 18-liquid adding ring pipe, 181-liquid inlet, 182-ring pipe liquid outlet, 19-discharging cone bucket, 20-auxiliary air source, 21-compressed air source, 22-atomizing mixing device , 23-discharging pneumatic butterfly valve, 24-flange, 25-discharging port, 26-liquid adding solenoid valve, 27-double external thread connector, 28-blind plate chuck, 29-sleeve quick connect chuck, 30-outer sleeve, 31-inner sleeve, 32-check valve, 33-cone sleeve, 34-inlet pipe, 35-compressed air source hole, 36-sprinkler sealing ring, 37-sprinkler, 38-sprinkler seat ring, 39-tightening screw, 40-sealing plug, 41-bolt, 42-quick opening chuck, 43-nut, 44-spring washer, 45-seal ring, 46-cylinder. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, a continuous feeding pneumatic mixer with humidification function described in the present invention includes a mixer tank body, a dust removal device and an atomizing mixing device 22, a feed port 1 is provided on the side wall of the mixer tank body, a feed pneumatic butterfly valve 2 is installed on the feed port 1, one or more dust removal devices are provided on the top of the mixer tank body, and a sight glass 15 is provided on the side wall of the mixer tank body; a conical discharge valve 16 is provided at the bottom center of the mixer tank body, and the bottom end of the mixer tank body is connected to the discharge cone hopper 19 through the upper flange and the lower flange in sequence, and the discharge cone hopper 19 is connected to the discharge port 25 through the discharge pneumatic butterfly valve 23 and the flange 24.

[0025] In order to realize the purpose of continuous feeding of the pneumatic mixer without stopping the machine and achieving continuous mixing, two sets of dust removal devices are used in the embodiment of the present invention, such as Figure 1As shown, the first set of dust removal devices includes a silo top dust collector 1, an induced draft valve 1, a blow pipe 1, a pulse solenoid valve 1, an air bag A, and a filter 1, and the second set of dust removal devices includes a silo top dust collector 2, an induced draft valve 2, a blow pipe 2, a pulse solenoid valve 2, an air bag B, and a filter 2; wherein, the silo top dust collector 1 4 and the silo top dust collector 2 10 are respectively installed on the top of the mixer tank body, and the filter 1 8 and the filter 2 14 are both located in the mixer tank body and are respectively connected to the silo top dust collector 1 4 and the silo top dust collector 1 The bottom end of the device 10 is correspondingly connected, the top of the silo top dust collector 4 and the silo top dust collector 2 10 are correspondingly provided with an induced draft valve 3 and an induced draft valve 2 9, the lower sides of the induced draft valve 3 and the induced draft valve 2 9 are correspondingly provided with a blowing pipe 5 and a blowing pipe 2 11, the blowing pipe 5 is connected to a pulse solenoid valve 6, the blowing pipe 2 11 is connected to a pulse solenoid valve 2 12, the pulse solenoid valve 16 and the pulse solenoid valve 2 12 are respectively connected to an air bag A and an air bag B; the air bag A and the air bag B are respectively connected to an auxiliary air source 20.

[0026] The material of filter 18 and filter 14 is plastic sintered board, with multi-layer woven wire mesh, made by special lamination and pressing process, with excellent filtering accuracy and processability, and the particle filtering diameter is 0.1 micron. Since compressed air continuously enters the pneumatic mixing tank during pneumatic mixing, it is required to remove gas in time and ensure that the powder is not discharged during continuous mixing; by opening the induced draft valve 13, the silo top dust collector 14 starts dust removal and exhaust, and the particles attached to the filter 18 during powder mixing will be back-blown through the blowing pipe 15 to ensure that the silo top dust collector 14 can be ventilated normally; by opening the induced draft valve 29, the silo top dust collector 210 starts dust removal and exhaust, and by opening the blowing pipe 211, the attached particles at the filter 214 are back-blown to prevent blockage, and this cycle is used to achieve continuous feeding.

[0027] like Figure 2As shown, in order not to destroy the powder morphology when adding liquid, the present invention also designs an atomizing mixing device, the atomizing mixing device 22 includes a liquid adding solenoid valve 26, an outer sleeve 30, an inner sleeve 31, a one-way valve 32, a cone sleeve 33, a nozzle sealing ring 36, a quick-opening chuck 42, a cylinder 46 and a liquid spraying component, the liquid spraying component includes a nozzle seat ring 36, a nozzle 37, a sealing plug 40, a bolt 41 and a nut 43, the bolt 41 vertically penetrates the quick-opening chuck 42 and is threadedly connected to the nut 43, the bottom of the bolt 41 is connected to the piston end of the cylinder 46, and the piston end of the cylinder is connected to the nut 43. 3, a spring washer 44 is provided between the top and bottom of the bolt 41, a sealing plug 40 is sleeved on the outer periphery of the top end of the bolt 41, a tightening ring 39 is provided on the sealing plug 40, a nozzle seat ring 38 is provided above the tightening ring 39, the nozzle seat ring 38 is welded to the lower flange, the lower end of the nozzle 37 passes through the center of the nozzle seat ring 38 and is fixedly connected to the tightening ring 39, the nozzle sealing ring 36 is sleeved on the lower end of the nozzle and is located between the nozzle seat ring 38 and the tightening ring 39; in order to make the spray angle of the nozzle 37 adjustable, the hole of the nozzle can be designed as an inclined hole, and its inclination angle is 12°-16°.

[0028] A sealing ring 45 is provided at the bottom of the cylinder piston end, and an opening connected to the cone sleeve 33 is provided on the side wall of the cylinder 46 above the sealing ring 45. One end of the outer sleeve 30 is connected to the cone sleeve 33, and the other end of the outer sleeve 30 is connected to the quick-connect chuck 29 and the blind plate chuck 28 in sequence. An inner sleeve 31 is provided in the outer sleeve 30, and one end of the one-way valve 32 passes through the blind plate chuck 28 and is located at the center of the inner sleeve 31. The other end of the one-way valve 32 is connected to the liquid adding solenoid valve 26 through a double external thread connector 27, and a compressed air source hole 35 is provided on the side wall of the outer sleeve 30.

[0029] like Figure 3 and 4 As shown, an air intake ring pipe 17 and a liquid adding ring pipe 18 are sleeved on the outer periphery of the mixer tank body, and the air intake ring pipe 17 is externally connected to a compressed air source 21, and both the air intake ring pipe 17 and the liquid adding ring pipe 18 are annular pipes, and the air intake ring pipe 17 is provided with an annular pipe air inlet 171, and the annular pipe air inlet 171 is provided with an air intake flange, and a plurality of annular pipe air outlets 172 are evenly arranged on the pipe wall of the air intake ring pipe 17 along its circumference, and the annular pipe air inlet 171 is externally connected to a compressed air source 21, and the compressed air source hole 35 of the outer sleeve is connected to the annular pipe air outlet 172; the liquid adding ring pipe 18 is provided with a liquid inlet 181, and a plurality of annular pipe liquid outlets 182 are also evenly arranged on the side wall of the liquid adding ring pipe 18 along its circumference.

[0030] There are more than one atomizing and mixing device, which are arranged in an annular manner at the bottom of the pneumatic mixer. The liquid adding solenoid valve 26 of the atomizing and mixing device is connected to the annular tube liquid outlet 182 of the liquid adding annular tube in a one-to-one correspondence; the liquid material is introduced into the atomizing and mixing device by the liquid adding solenoid valve 26 and controlled by the one-way valve 32. The one-way valve can allow the liquid to pass in one direction and prevent the liquid from flowing back into the liquid adding solenoid valve 26 to cause corrosion. The compressed air enters the cavity of the atomizing and mixing device through the compressed air source hole 35 of the outer sleeve. The atomizing and mixing device relies on the friction generated by the speed difference between the gas and the liquid. Under the impact of the high-speed airflow, the liquid is instantly pulled into a thin and long thread, and quickly breaks at a thinner part to form tiny atomized droplets. The atomized droplets pass through the cone sleeve 3 3 and then reach the cylinder 46. After the atomized droplets enter the cylinder, the cylinder piston rod moves downward, the nozzle hole opens, and the smaller atomized droplets rise and are sprayed out from the nozzle 37. The pressure at the nozzle 37 causes the larger atomized droplets to quickly flow back to the atomizing mixing device cavity. The atomizing mixing device can produce atomized droplets with uniform height and small average particle size by controlling the liquid intake, the pressure of the compressed air source and the air intake. The structure has high reliability, and the particle size of the generated atomized droplets can be as low as the aerosol level (5μm~30μm), and can be adjusted within the range from the aerosol level to the mist level (50μm~100μm); the cylinder 46 is the switch of the nozzle 37. By controlling the cylinder 46, the atomizing mixing device 22 is controlled to achieve humidification or not.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to be a further limitation of the present invention. All equivalent changes made using the contents of the present specification and drawings are within the protection scope of the present invention.

Claims

1. A continuous feeding pneumatic mixer with humidification function, characterized in that: It includes a mixer tank body, a dust removal device and an atomizing mixing device. A feed port is provided on the side wall of the mixer tank body, and a feed pneumatic butterfly valve is installed on the feed port. One or more dust removal devices are provided on the top of the mixer tank body, and the dust removal device includes a silo top dust collector, an air induced valve, a blow pipe, a pulse solenoid valve, an air bag and a filter. The silo top dust collector is installed on the top of the mixer tank body, and the filter is located in the mixer tank body and connected to the bottom end of the silo top dust collector. An air induced valve is provided on the top of the silo top dust collector, and a blow pipe is provided on the lower side of the air induced valve. The blow pipe is connected to the pulse solenoid valve, and the pulse solenoid valve is connected to the air bag below. An air intake ring pipe and a liquid adding ring pipe are sleeved on the outer periphery of the mixer tank body, a conical discharge valve is arranged at the bottom center of the mixer tank body, the bottom end of the mixer tank body is connected to a discharge cone bucket through an upper flange and a lower flange in sequence, the discharge cone bucket is connected to a discharge port through a discharge pneumatic butterfly valve and a flange, the input end of the atomizing mixing device is connected to the air intake ring pipe and the liquid adding ring pipe respectively, and the output end of the atomizing mixing device is fixed on the lower flange and communicated with the mixer tank body; The atomizing mixing device comprises a liquid adding solenoid valve, an outer sleeve, an inner sleeve, a cone sleeve, a cylinder and a liquid spraying component. The upper end of the cylinder is connected to the liquid spraying component through a quick-opening chuck, and an opening communicating with the cone sleeve is provided on the side wall of the cylinder. One end of the outer sleeve is connected to the cone sleeve, and the other end of the outer sleeve is connected to the quick-connect chuck and the blind plate chuck in sequence. An inner sleeve is provided in the outer sleeve, and a one-way valve with one end passing through the blind plate chuck is provided in the center of the inner sleeve, and the other end of the one-way valve is connected to the liquid adding solenoid valve through a double external thread joint, and an air inlet hole is provided on the side wall of the outer sleeve.

2. A continuous feeding pneumatic mixer with humidification function according to claim 1, characterized in that: The liquid spraying component includes a nozzle, a nozzle seat ring, a sealing plug, a bolt and a nut. The bolt vertically penetrates the quick-open chuck and is threadedly connected to the nut. The bottom of the bolt is connected to the piston end of the cylinder. A spring washer is provided between the piston end of the cylinder and the nut. A sealing plug is sleeved on the outer periphery of the top end of the bolt. A tightening ring is provided on the sealing plug. A nozzle seat ring is provided above the tightening ring. The lower end of the nozzle penetrates the center of the nozzle seat ring and is fixedly connected to the tightening ring.

3. A continuous feeding pneumatic mixer with humidification function according to claim 2, characterized in that: It also includes a nozzle sealing ring, which is sleeved on the lower end of the nozzle and located between the nozzle seat ring and the fixing screw ring.

4. A continuous feeding pneumatic mixer with humidification function according to claim 2, characterized in that: A sealing ring is arranged at the bottom of the cylinder piston end.

5. A continuous feeding pneumatic mixer with humidification function according to claim 1, characterized in that: The air intake ring pipe is an annular pipe, a ring pipe air inlet is arranged on the air intake ring pipe, an air intake flange is arranged on the ring pipe air inlet, and a plurality of ring pipe air outlets are evenly arranged on the pipe wall of the air intake ring pipe along its circumference.

6. A continuous feeding pneumatic mixer with humidification function according to claim 1, characterized in that: The liquid adding ring pipe is an annular pipe, a liquid inlet is arranged on the liquid adding ring pipe, and a plurality of ring pipe liquid outlets are evenly arranged on the side wall of the liquid adding ring pipe along its circumference.

7. A continuous feeding pneumatic mixer with humidification function according to claim 1, characterized in that: A sight glass is arranged on the side wall of the mixer tank.

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