CN113942165B - Mixing head capable of adding powder particles and powder particle adding method - Google Patents
Mixing head capable of adding powder particles and powder particle adding method Download PDFInfo
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- CN113942165B CN113942165B CN202111251387.4A CN202111251387A CN113942165B CN 113942165 B CN113942165 B CN 113942165B CN 202111251387 A CN202111251387 A CN 202111251387A CN 113942165 B CN113942165 B CN 113942165B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1866—Feeding multiple materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a mixing head capable of adding powder particles, which comprises a large piston cylinder, a small piston cylinder, a large piston positioned in the large piston cylinder, a small piston positioned in the small piston cylinder, and a powder particle channel communicated with a mixing cavity, wherein a material blocking part is arranged at one end of the large piston facing the mixing cavity and is used for isolating the small piston cylinder from the powder particle channel when the mixing head works. The invention provides a mixing head capable of adding powder particles and a powder particle adding method, which are used for solving the problem that the powder particles are difficult to add at the mixing head for mixing in the prior art and achieving the purpose of stably adding the powder particles at the mixing head so as to meet the use requirements of various working conditions.
Description
Technical Field
The invention relates to the field of mixing heads, in particular to a mixing head capable of adding powder particles and a powder particle adding method.
Background
The mixing head is an important part used in foaming, injection molding and other processes in the production process of plastic products, and particularly for polyurethane foaming, a high-pressure mixing head is used for mixing materials A (white materials) and B (black materials) in the mixing head at high pressure. The mixing head in the prior art can only meet the mixing of foaming or injection raw materials, and for other additives, the additives are added in the material tank of the raw materials in advance, which is not beneficial to the stability of the performance of the raw materials, and the additives are easy to precipitate and stratify in the material tank. In the prior art, the prior application CN212577049U of the applicant of the present application discloses a "polyurethane foaming device capable of multi-channel pouring with powder components added", but the application is a device specially used for the on-site pouring foaming operation of a polyurethane curing track bed, and the principle of adding the powder components is that "a powdery waterproof agent or a water-resistant agent and a material B are premixed, and then the premixed materials form a component C, and then the component C is added together. Therefore, the equipment still adds the powder component into the liquid raw material (material B) to be mixed into liquid, and then uses the small piston to match for pouring, is only suitable for the on-site pouring foaming operation of the polyurethane curing ballast bed, is difficult to meet the requirement of adding the powder additive into the conventional mixing head, and still has the problems that the powder with larger particle diameter can be filtered and the powder with larger particle diameter is easy to cause blockage.
In addition, with the recent upgrading of environmental protection requirements, the treatment of waste plastic products also becomes a difficult problem, and no environment-friendly and reliable treatment mode is available in the prior art.
Disclosure of Invention
The invention provides a mixing head capable of adding powder particles and a powder particle adding method, which are used for solving the problem that the powder particles are difficult to add at the mixing head for mixing in the prior art and achieving the purpose of stably adding the powder particles at the mixing head so as to meet the use requirements of various working conditions.
The invention is realized by the following technical scheme:
a mixing head capable of adding powder particles comprises a large piston cylinder, a small piston cylinder, a large piston located in the large piston cylinder, a small piston located in the small piston cylinder, and a powder particle channel communicated with a material mixing cavity, wherein a material blocking part is arranged at one end, facing the material mixing cavity, of the large piston, and the material blocking part is used for isolating the small piston cylinder from the powder particle channel when the mixing head works. Improve big piston tip structure in this application, set up in big piston towards the one end in material mixing chamber and keep off material portion, big piston recoil when carrying out the during operation exposes the material mixing chamber, keep off material portion this moment and just in time lie in between the discharge end of little piston cylinder and the discharge end of powder passageway, keep apart both, raw materials and powder are at first sprayed on keeping off material portion, again along keeping off material portion downstream, cross and keep off the material portion after just can mixing. Through the setting of this scheme, can effectively avoid the raw materials to get into in the powder passageway to this has avoided because of the thorough jam of raw materials foaming or the powder passageway that reaction forming leads to, has guaranteed this application long-term stable normal operating.
Wherein, keep off the material portion and can integrated into one piece between the big piston bottom, also can adopt arbitrary connected mode to connect.
Furthermore, the material blocking part comprises a first inclined plane which is opposite to the small piston cylinder and a second inclined plane which is opposite to the powder particle channel; the first inclined plane and the second inclined plane are intersected at one end far away from the large piston body. When the scheme is in operation, a mixture of the material A and the material B enters the material mixing cavity from the small piston cylinder and is sprayed on the first inclined plane; meanwhile, the powder particles are sprayed on the second inclined surface of the material blocking part; mixing the material A, the material B and the powder particles below the junction. This scheme utilization keeps off material portion both sides inclined plane and leads two kinds of raw materials respectively for two kinds of raw materials can show improvement mixing efficiency in the abundant cross mixing in the portion below of keeping off the material, make and add stability and the homogeneity that also can guarantee to mix under the prerequisite of keeping off the material portion.
Furthermore, a powder flow regulator is arranged on the powder channel.
Big piston cylinder, little piston cylinder, big piston, little piston are prior art in this mixing head, are provided with A material discharge gate, B material discharge gate in the little piston cylinder, and the removal through little piston controls opening (compounding) or closing (self-loopa) of two discharge gates to the removal through big piston controls opening or closing of compounding chamber, and its specific structure does not do not show here any more. In the application, a powder passage is also arranged on the mixing head, the powder passage is communicated with the mixing cavity, and a powder flow regulator is arranged on the powder passage and is used for regulating the powder flow entering the powder passage. When the powder mixing device is used, the powder particle channel is connected with a container for storing powder particles to be added, and the powder particles to be added enter the mixing cavity through the powder particle channel and are mixed with the material A and the material B discharged from the small piston cylinder in a high-pressure state. The scheme solves the problems that in the prior art, only the powder additive can be added into the material A or the material B, so that the precipitation, the layering and the easy filtration by a filter device on a pumping pipeline under a high pressure state are caused, and the stable mixing of the powder additive is difficult to ensure, thoroughly realizes the universality of adding the powder additive at a mixing head, is applicable to various plastic production processes using the mixing head to foam or perform injection molding in the prior art, and has extremely wide application range and remarkable economic benefit. The particles described in this application may be any particulate additive or raw material component, such as graphite powder as a flame retardant.
In addition, the application has a remarkable effect on the recovery treatment of waste plastic products: the waste plastic products are classified according to the material, and are crushed into powder particles when the plastic products are produced, and then the waste plastic products are matched with the application for use, so that the problem of treatment of dangerous waste products caused by environmental protection requirements is solved, the waste plastic products are changed into valuables and recycled, and the raw material consumption and the cost of new product production can be effectively reduced.
Further, the powder particle flow regulator comprises a sealing joint and a powder particle joint, wherein the sealing joint is used for being in sealing connection with the powder particle channel, the powder particle joint is connected to the inside of the sealing joint, a gap is formed between the sealing joint and the powder particle joint, and the gap is communicated with the powder particle channel; the gas source device also comprises an interface communicated with the gap, and the interface is used for connecting a gas source. The sealing joint is used for being connected with the powder particle channel in a sealing mode, and the powder particle joint is used for being connected with the powder particle storage device. In the design of the scheme, a special blanking structure is arranged in consideration of the problem that powder and particle materials possibly have large viscous resistance and are difficult to stably enter the mixing cavity. Specifically, the interface is connected with an air source, suction pressure is generated in a gap between the sealing joint and the particle joint, and the gap is communicated with the particle channel during operation, so that a negative pressure area is formed in the region of the particle channel close to the gap to suck the particle materials, and the particle materials are ensured to stably enter the particle channel.
Furthermore, the interface is arranged on the sealing joint, so that the interface is convenient to be connected with an external air source, and is also favorable for directly producing suction pressure in the gap.
Further, the powder particle joint is axially movable within the sealing joint. In the scheme, the specific moving mode of the powder particle joint moving along the axial direction in the sealing joint is not limited, and the size and the opening position of the gap are adjusted by adjusting the relative position of the powder particle joint, so that the adjustment of the powder particle flow is realized.
Furthermore, a first conical part is arranged on the inner wall of the sealing joint, and a second conical part is arranged on the outer wall of the powder particle joint; the first conical part gradually decreases in inner diameter from one end far away from the powder particle channel to one end close to the powder particle channel, and the second conical part gradually decreases in outer diameter from one end far away from the powder particle channel to one end close to the powder particle channel; the taper of the second tapered portion is less than the taper of the first tapered portion. The present solution further defines the structure of the powder particle flow regulator, which realizes flow regulation through the cooperation of the first conical part and the second conical part. The taper of the second conical part is smaller than that of the first conical part, namely the included angle between the second conical part and the axis of the powder particle joint is smaller than that between the first conical part and the axis of the sealing joint. Specifically, the first conical part is positioned on the inner wall of the sealing joint, the second conical part is positioned on the outer wall of the powder particle joint, so that an annular space between the first conical part and the second conical part is the gap, and the conical degree of the second conical part is smaller than that of the first conical part, so that when the powder particle joint moves to the inner direction of the sealing joint for a sufficient distance, the bottom end of the powder particle joint can prop against a position on the first conical part, the negative pressure produced in the powder particle channel can be cut off, and powder particles can only naturally enter by means of gravity; when the powder particle joint moves towards the outer direction of the sealing joint, the bottom end of the powder particle joint is separated from the first conical part to form an opening, and the opening can transmit negative pressure in the gap into the powder particle channel, so that negative pressure suction blanking of powder particles is realized; and the size of the opening can be controlled by adjusting the relative position of the powder particle joint and the sealing joint, so that the pressure value in the powder particle channel is regulated and controlled, and the powder particle flow is regulated.
Furthermore, the powder particle joint is in threaded connection with the sealing joint. The axial adjustment is conveniently realized through threaded connection.
Furthermore, a plurality of sealing rings are arranged between the powder particle joint and the sealing joint. The connection between the particle joint and the sealing joint is sealed by the sealing ring, so that a negative pressure area can be only produced in the particle channel through the gap, and the sucked particles are ensured to directly enter the particle channel and move towards the direction of the mixing cavity under the inertia effect.
A powder particle adding method comprises the following steps:
s1, installing a flow regulator on a powder particle channel communicated with a mixing cavity of the mixing head; the powder joint on the flow regulator is communicated with a powder storage device, and the interface on the flow regulator is communicated with an air source; forming a gap between the sealing joint and the particle joint;
s2, adjusting the size of the opening between the gap and the powder particle channel to a required degree by adjusting the axial position of the powder particle joint;
s3, retracting the large piston to expose the mixing cavity; the small piston returns to expose the material outlet A and the material outlet B; the material blocking part at the end part of the large piston is isolated between the end part of the small piston cylinder and the end part of the powder particle channel;
s4, enabling the material A and the material B to enter the material mixing cavity from the small piston cylinder and be sprayed on the first inclined plane of the material blocking part; meanwhile, the air supply is carried out, the powder particles are sucked into the powder particle channel, and the powder particles enter the mixing cavity from the powder particle channel and are sprayed on the second inclined surface of the material blocking part; the material A, the material B and the powder particles are mixed under the material blocking part.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention relates to a mixing head capable of adding powder particles and a powder particle adding method, which solve the problems that in the prior art, only powder particle additives can be added into a material A or a material B to cause precipitation and layering, the powder particle additives are easy to filter by a filter device on a pumping pipeline in a high-pressure state, the stable mixing of the powder particle additives is difficult to ensure, and the like, thoroughly realize the universality of adding the powder particle additives at the mixing head, are suitable for various plastic production processes using the mixing head to foam or perform injection molding in the prior art, are suitable for adding various powder particle additives or materials, have extremely wide application range and obvious economic benefit.
2. The mixing head capable of adding the powder particles and the powder particle adding method can be used in the field of recycling of crushed waste plastic products, not only solves the problem of treatment of hazardous waste products caused by environmental protection requirements, but also changes the waste plastic products into valuables, and can effectively reduce the raw material consumption and the cost of new product production.
3. The mixing head capable of adding the powder particles and the powder particle adding method can control stable powder particle feeding, and can regulate and control the magnitude of suction force generated in a powder particle channel so as to regulate the flow rate of the powder particles and fill up the technical blank of adding the powder particles at the mixing head in the prior art.
4. According to the mixing head capable of adding powder and the powder adding method, the material blocking part is arranged, so that high-pressure raw materials discharged from a small piston cylinder can be effectively prevented from entering a powder channel, the thorough blockage of the powder channel caused by foaming or reaction forming of the raw materials is avoided, and the long-term stable normal operation is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a cross-sectional view of an embodiment of the present invention in an operational state;
FIG. 2 is a cross-sectional view of an embodiment of the present invention in a non-operational state;
FIG. 3 is a cross-sectional view of a powder flow regulator in an embodiment of the invention;
fig. 4 is a schematic structural view of a material blocking portion in an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-large piston cylinder, 2-large piston, 201-material blocking part, 202-first inclined plane, 203-second inclined plane, 3-small piston cylinder, 4-small piston, 5-powder channel, 6-powder flow regulator, 601-sealing joint, 602-powder joint, 603-gap, 604-negative pressure interface, 605-first conical part, 606-second conical part, 607-sealing ring, 7-mixing cavity and 8-A material outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention. In the description of the present application, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the scope of the present application.
Example 1:
the mixing head capable of adding powder particles as shown in fig. 1 and fig. 2 comprises a large piston cylinder 1, a small piston cylinder 3, a large piston 2 positioned in the large piston cylinder 1, and a small piston 4 positioned in the small piston cylinder 3, wherein the large piston cylinder 1 is communicated with the small piston cylinder 3 at a mixing cavity 7, the mixing head also comprises a powder particle channel 5 communicated with the mixing cavity 7, and a powder particle flow regulator 6 is arranged on the powder particle channel 5.
The state of the mixing head when high-pressure mixing is not carried out is shown in figure 3, at the moment, the large piston moves downwards to block the mixing cavity, and the small piston moves leftwards to block the material outlet 8 of the A material and the material outlet of the B material.
When the mixing head is used for high-pressure mixing, as shown in fig. 1, the large piston moves upwards to open the mixing cavity, the small piston moves rightwards to expose the material A discharge port 8 and the material B discharge port, at the moment, the powder particle channel is connected with a container for storing powder particles to be added, and the powder particles to be added enter the mixing cavity through the powder particle channel to be mixed with the material A and the material B discharged from the small piston cylinder in a high-pressure state. As will be understood by those skilled in the art, the material B outlet is located on the outer side of the paper surface in FIG. 1, and is located on the opposite side of the small piston from the material A outlet 8.
Preferably, the large piston cylinder 1 and the small piston cylinder 3 are hydraulic cylinders.
Example 2:
a mixing head capable of adding powder particles is disclosed, on the basis of embodiment 1, as shown in FIG. 3, a powder particle flow regulator 6 comprises a sealing joint 601 for sealing connection with a powder particle channel 5, and a powder particle joint 602 connected inside the sealing joint 601, wherein a gap 603 is formed between the sealing joint 601 and the powder particle joint 602, and the gap 603 is communicated with the powder particle channel 5; and the device also comprises a port 604 communicated with the gap 603, wherein the port 604 is used for connecting a gas source. The interface 604 is provided on the sealing joint 601.
A first conical part 605 is arranged on the inner wall of the sealing joint 601, and a second conical part 606 is arranged on the outer wall of the powder particle joint 602; the first tapered portion 605 has an inside diameter gradually decreasing from the end away from the powder particle channel 5 to the end near the powder particle channel 5, and the second tapered portion 606 has an outside diameter gradually decreasing from the end away from the powder particle channel 5 to the end near the powder particle channel 5; the second tapered portion 606 has a taper that is less than the taper of the first tapered portion 605.
The powder particle joint 602 is connected with the sealing joint 601 through threads, and the powder particle joint 602 can move in the sealing joint 601 along the axial direction by rotating the powder particle joint 602.
When the powder particle connector is used, the powder particle connector is rotated to move towards the inner direction of the sealing connector until the bottom end of the powder particle connector is pushed against a certain position on the first conical part, the negative pressure produced in the powder particle channel can be cut off at the moment, and powder particles can naturally enter only by means of gravity; on the contrary, the rotary powder particle joint moves towards the outer direction of the sealing joint, the bottom end of the powder particle joint is separated from the first conical part to form an opening, and the opening can transmit the suction force in the gap into the powder particle channel, so that the suction blanking of the powder particles is realized; and the size of the opening can be controlled by adjusting the relative position of the powder joint and the sealing joint, so as to regulate the negative pressure value in the powder channel and further regulate the powder flow.
In one or more preferred embodiments, a plurality of sealing rings 607 are further provided between the powder particle joint 602 and the sealing joint 601.
In one or more preferred embodiments, the sealing joint 601 is located at one end of the powder particle channel, so that the sucked powder particles directly enter the powder particle channel to move towards the mixing chamber under the inertia effect.
Example 3:
in the mixing head capable of adding powder particles shown in fig. 1 to 4, on the basis of any of the above embodiments, a material blocking part 201 is arranged at one end of the large piston 2 facing the mixing chamber 7, and the material blocking part 201 is used for isolating the small piston cylinder 3 from the powder particle channel 5 when the mixing head is in operation. The specific structure of the material blocking part 201 is shown in fig. 4, and the material blocking part 201 comprises a first inclined surface 202 facing the small piston cylinder 3 and a second inclined surface 203 facing the powder particle channel 5; the first inclined surface 202 and the second inclined surface 203 meet at one end in the direction away from the body of the large piston 2.
In one or more preferred embodiments, the material blocking part 201 is detachably connected with the large piston 2, so that the mixing heads with different sizes and slopes can be replaced conveniently according to different mixing requirements, the universality of the application can be obviously improved, and the application range in the production process of plastic products is expanded.
The specific use process of this embodiment is as follows:
s1, installing the flow regulator 6 on the powder particle channel 5 communicated with the mixing cavity 7 of the mixing head; the powder joint 602 on the flow regulator 6 is communicated with a powder storage device, and the interface 604 on the flow regulator 6 is communicated with an air source; a gap 603 is formed between the sealing joint 601 and the powder joint 602;
s2, adjusting the axial position of the particle joint 602 to adjust the size of the opening between the gap 603 and the particle channel 5 to a desired degree;
s3, retracting the large piston 2 to expose the mixing cavity 7; the small piston 4 returns to expose the material A discharge port and the material B discharge port; and the material blocking part 201 at the end part of the large piston 2 is isolated between the end part of the small piston cylinder 3 and the end part of the powder particle channel 5;
s4, feeding the material A and the material B into the mixing cavity 7 from the small piston cylinder 3, and spraying the material A and the material B on the first inclined surface 202 of the material blocking part 201; meanwhile, the air supply is carried out, the powder particles are sucked into the powder particle channel 5, and the powder particles enter the mixing cavity 7 from the powder particle channel 5 and are sprayed on the second inclined surface 203 of the material blocking part 201; the material A, the material B and the powder particles are mixed under the material blocking part 201.
Example 4:
the mixing head capable of adding powder particles based on any one of the above embodiments is used for recycling treatment of waste plastic products: the waste plastic products are classified according to the material, and are crushed into powder particles when plastic products with the same material are produced, and then the powder particles are matched with the mixing head in any embodiment for use, so that the problem of treatment of dangerous waste products caused by environmental protection requirements is solved, the waste plastic products are changed into valuable materials and recycled, and the raw material consumption and the cost of new product production can be effectively reduced.
Example 5:
a mixing head capable of adding powder particles is used for adding powder particle flame retardant according to any one of the above embodiments.
Preferably, the particulate flame retardant is graphite.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.
Claims (10)
1. The utility model provides a mixing head of additive powder, includes big piston cylinder (1), little piston cylinder (3), is located big piston (2) of big piston cylinder (1), is located little piston (4) of little piston cylinder (3), big piston cylinder (1) and little piston cylinder (3) are in compounding chamber (7) department intercommunication, its characterized in that still includes powder passageway (5) with compounding chamber (7) intercommunication, big piston (2) set up fender material portion (201) towards the one end of compounding chamber (7), fender material portion (201) are used for keeping apart little piston cylinder (3) and powder passageway (5) when mixing head during operation.
2. A mixing head for adding powder particles as claimed in claim 1, wherein the dam (201) comprises a first ramp (202) facing the small piston cylinder (3), a second ramp (203) facing the powder particle channel (5); the first inclined surface (202) and the second inclined surface (203) are intersected at one end far away from the body of the large piston (2).
3. A mixing head for adding powder particles as claimed in claim 1, wherein the powder particle passage (5) is provided with a powder particle flow regulator (6).
4. A mixing head to which powder particles can be added according to claim 3, characterised in that the powder particle flow regulator (6) comprises a sealing joint (601) for sealing connection with the powder particle channel (5), a powder particle joint (602) connected inside the sealing joint (601), that a gap (603) is provided between the sealing joint (601) and the powder particle joint (602), and that the gap (603) communicates with the powder particle channel (5); the device also comprises an interface (604) communicated with the gap (603), wherein the interface (604) is used for connecting a gas source.
5. A mixing head for adding powder particles as claimed in claim 4, wherein the mouthpiece (604) is provided on a sealing joint (601).
6. A mixing head to which powder particles can be added according to claim 4, characterised in that the powder particle joint (602) is axially movable within the sealing joint (601).
7. A mixing head for adding powder particles according to claim 6, characterized in that the inner wall of the sealing joint (601) is provided with a first conical part (605), and the outer wall of the powder particle joint (602) is provided with a second conical part (606); the first conical part (605) gradually decreases in inner diameter from one end far away from the powder particle channel (5) to one end close to the powder particle channel (5), and the second conical part (606) gradually decreases in outer diameter from one end far away from the powder particle channel (5) to one end close to the powder particle channel (5); the second tapered portion (606) has a taper that is less than the taper of the first tapered portion (605).
8. A mixing head to which powder particles can be added according to claim 6, characterised in that the powder particle joint (602) is screwed to the sealing joint (601).
9. A mixing head for adding powder particles as claimed in claim 4, characterised in that sealing rings (607) are provided between the powder particle joint (602) and the sealing joint (601).
10. A method of adding powder particles based on a mixing head as claimed in any one of claims 1 to 9, comprising the steps of:
s1, installing a flow regulator (6) on a powder particle channel (5) communicated with a mixing cavity (7) of the mixing head; a powder particle joint (602) on the flow regulator (6) is communicated with a powder particle storage device, and an interface (604) on the flow regulator (6) is communicated with an air source; forming a gap (603) between the sealing joint (601) and the powder joint (602);
s2, adjusting the size of the opening between the gap (603) and the powder particle channel (5) to a required degree by adjusting the axial position of the powder particle joint (602);
s3, retracting the large piston (2) to expose the mixing cavity (7); the small piston (4) returns to expose the material outlet A and the material outlet B; the material blocking part (201) at the end part of the large piston (2) is isolated between the end part of the small piston cylinder (3) and the end part of the powder particle channel (5);
s4, feeding the material A and the material B into the mixing cavity (7) from the small piston cylinder (3), and spraying the material A and the material B onto the first inclined surface (202) of the material blocking part (201); meanwhile, the air supply is carried out, the powder particles are sucked into the powder particle channel (5), and the powder particles enter the mixing cavity (7) from the powder particle channel (5) and are sprayed on the second inclined surface (203) of the material blocking part (201); the material A, the material B and the powder particles are mixed under the material blocking part (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111251387.4A CN113942165B (en) | 2021-10-27 | 2021-10-27 | Mixing head capable of adding powder particles and powder particle adding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111251387.4A CN113942165B (en) | 2021-10-27 | 2021-10-27 | Mixing head capable of adding powder particles and powder particle adding method |
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| Publication Number | Publication Date |
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| CN113942165A CN113942165A (en) | 2022-01-18 |
| CN113942165B true CN113942165B (en) | 2022-05-20 |
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| CN202111251387.4A Active CN113942165B (en) | 2021-10-27 | 2021-10-27 | Mixing head capable of adding powder particles and powder particle adding method |
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| CN (1) | CN113942165B (en) |
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| CN113942165A (en) | 2022-01-18 |
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