CN113648859A

CN113648859A - Mechanical equal-proportion online feeding mixer

Info

Publication number: CN113648859A
Application number: CN202110920283.1A
Authority: CN
Inventors: 费曹民
Original assignee: Anhui Boshang Chemical Equipment Co ltd
Current assignee: Anhui Boshang Chemical Equipment Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-11-16
Anticipated expiration: 2041-08-11
Also published as: CN113648859B

Abstract

The invention belongs to the technical field of raw material mixing, and particularly relates to a mechanical equal-proportion online feeding mixer. The invention comprises a pump body, wherein the tail end of the pump body is recessed inwards to form a counter bore-shaped stirring cavity, the tail end of the pump body is fixedly connected with a power source, a stirring shaft of the power source coaxially extends into the stirring cavity, the feeding and mixing purposes are realized through stirring blades positioned on the stirring shaft, a head end stirring blade positioned at the head end of the stirring shaft is attached to the bottom surface of a hole of the stirring cavity, and only a fit clearance for the rotation of the head end stirring blade is reserved between the head end stirring blade and the hole; the mixer also comprises a discharge port, a feed port and a transition channel, wherein the outlet end of the transition channel is positioned at the bottom surface of the stirring cavity hole; the discharge port is communicated with the tail end of the stirring cavity, and the turning part of the discharge channel between the discharge port arranged along the radial direction of the pump body and the stirring cavity arranged along the axial direction is in smooth transition. The invention has the advantages of compact and reasonable structure, convenient and quick use and high working reliability, and can realize the purpose of on-line mixing of feeding and mixing.

Description

Mechanical equal-proportion online feeding mixer

Technical Field

The invention belongs to the technical field of raw material mixing, and particularly relates to a mechanical equal-proportion online feeding mixer.

Background

Mixing, i.e., an operation of agitating the solid phase and/or the liquid phase and/or the gas phase to cause a certain manner of circulation flow, thereby mixing the raw materials uniformly or accelerating physical and chemical processes. At present, most of traditional mixing and stirring apparatuses adopt a reaction kettle and the like as a stirring cavity, an impeller and the like form a stirring part, and the feeding and uniform mixing purposes of the mixing and stirring apparatuses are achieved through feeding of a feeding hole. In certain specific fields, it is often required to "feed, i.e. mix", the raw materials constituting the mixture; taking the mixing flow of A, B, C three raw materials as an example: A. b, C, if two or three of the three raw materials contact each other before being mixed, a series of chemical reactions, such as heat release, crystallization, even harmful gas generation, etc., can be generated, which greatly affects the mixing effect and even causes a series of safety hazards in severe cases. For the special mixture, how to avoid the problem that different raw materials are contacted in advance before stirring is difficult. At present, aiming at the specific mixing occasions, the thought of people is still limited by accurately feeding materials in an electric control mode, namely, the purpose of synchronous feeding is realized in an electrified mode. However, the method of electrification is not suitable for mixing raw materials such as corrosive media, and has the problems of high cost and high maintenance cost of electrification; the traditional electrification mode can only realize synchronous feeding, but cannot realize the synchronism and instant mixing of discharging, and the falling feeding still has the possibility of causing contact reaction and the like of raw materials in the falling process, and the solution is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a mechanical equal-proportion online feeding mixer which adopts a pure mechanical structure, has the advantages of compact and reasonable structure, wide application range, convenient and quick use and high working reliability, synchronously realizes the online mixing purpose of feeding and mixing, and is particularly suitable for occasions where raw materials are contacted and react before or when the raw materials are not completely mixed.

In order to achieve the purpose, the invention adopts the following technical scheme:

a mechanical equal proportion on-line feeding mixer is characterized in that: the stirring device comprises a pump body, wherein the tail end of the pump body is recessed inwards to form a counter bore-shaped stirring cavity, the tail end of the pump body is fixedly connected with a power source, a stirring shaft of the power source coaxially extends into the stirring cavity, the purpose of feeding and mixing is realized through stirring blades positioned on the stirring shaft, a head end stirring blade positioned at the head end of the stirring shaft is attached to the bottom surface of a hole of the stirring cavity, and only a fit clearance for the rotation of the head end stirring blade is reserved between the head end stirring blade and the hole; the mixer also comprises a discharge hole for discharging, more than two groups of feed inlets and a transition channel, wherein the discharge hole is communicated with the stirring cavity, the feed inlets are used for feeding, the transition channel is connected with the feed inlets and the stirring cavity, and the outlet end of the transition channel is positioned at the bottom surface of the hole of the stirring cavity; the discharge port is communicated with the tail end of the stirring cavity, and the turning part of the discharge channel between the discharge port arranged along the radial direction of the pump body and the stirring cavity arranged along the axial direction is in smooth transition.

Preferably, the stirring shaft is a wolf tooth shaft, the wolf tooth-shaped protrusions on the outer wall of the stirring shaft form the stirring blades, and the outer tooth surface of the stirring blade at the front end of the stirring shaft is flush with the front end surface of the stirring shaft, so that a gap between the front end surface of the stirring shaft and the hole bottom surface of the stirring cavity forms the fit gap, and raw materials enter the stirring cavity through the outlet end of the transition channel at the hole bottom surface of the stirring cavity; the cavity wall of the stirring cavity is convexly provided with matching teeth, the matching teeth are uniformly distributed along the axial direction of the stirring cavity, and a gap between every two axially adjacent matching teeth forms a rotating gap for the stirring blade to move; meanwhile, all the matching teeth are uniformly distributed along the circumferential direction of the stirring shaft, and gaps between two circumferentially adjacent matching teeth form a passing gap for raw materials to pass through in the axial direction.

Preferably, the mixer further comprises a material guide column, and a material guide hole communicated with the stirring cavity is coaxially arranged at the head end face of the pump body in a penetrating manner; the material guiding column penetrates into the pump body along the material guiding hole, so that the tail end surface of the material guiding column forms a hole bottom surface of the stirring cavity; the guide post outer wall department sets up the keyway that runs through guide post tail end face, and the passageway that forms between each keyway groove chamber and the guide hole pore wall constitutes transition passageway.

Preferably, the three groups of feed inlets are sequentially arranged along the axial direction of the pump body, the first feed inlet is an axial feed inlet and is assembled on the head end face of the pump body, and the second feed inlet and the third feed inlet are radial feed inlets and are sequentially arranged on the outer wall of the pump body along the axial direction; the guide post is spline structure and keyway figure is the multiple of three, and three sets of keyways correspond three sets of feed inlets of intercommunication respectively in the arbitrary continuous three sets of keyways of guide post circumference.

Preferably, the head end face of the material guiding column is fixedly connected with a gland in a threaded manner, the gland is in a cylindrical shape which is coaxially and inwards recessed from the head end face of the pump body, and a flanging is arranged at a barrel opening of the gland and is pressed at an installation step at the head end face of the pump body; the barrel bottom of the gland is provided with a communicating hole which is communicated with the first feed inlet and the corresponding key groove in a penetrating way.

Preferably, the mixer further comprises a head end flange, a pipe cavity of the head end flange forms the first feed inlet, the head end flange is matched with the head end face of the pump body through a flange, and the head end flange compresses the outer flanging of the gland at the mounting step.

Preferably, the pump body is internally provided with annular jackets coaxially, the two groups of annular jackets are independently arranged according to the sequence along the axial direction of the pump body, the second feed port and the third feed port radially penetrate through the pump body and are communicated with sleeve cavities of the corresponding annular jackets, and each annular jacket is provided with a through hole so as to be communicated with the sleeve cavity and the corresponding key groove at the material guide column.

Preferably, the power source is a power motor, and the power motor is matched with the tail end face of the pump body through a tail end bracket flange; the discharge port is arranged on the tail end bracket.

Preferably, the tail end bracket is mounted on the base, and the pump body mounted on the tail end bracket forms a cantilever structure.

The invention has the beneficial effects that:

1) the working principle of the invention is as follows: through adopting transition channel for the feed inlet directly extends to the work area of the stirring leaf in stirring chamber. The raw materials are separated from each other by the transition passage before entering the working area, so that the raw materials are independent from each other and do not interfere with each other, and the pre-reaction phenomenon of two or more raw materials which can be generated before mixing is avoided. After the raw materials enter the working area, a plurality of raw materials are immediately captured by the stirring blades at the moment of contact and are stirred and mixed, and finally the raw materials are discharged from a discharge hole at the tail end, so that the design purpose of feeding and mixing is realized.

In conclusion, the invention has the advantages of compact and reasonable structure, convenient and quick use and high working reliability, can realize the purpose of on-line mixing of feeding and mixing, and is particularly suitable for occasions where raw materials are contacted and react before or when the raw materials are not completely mixed.

2) For the stirring cavity, the online mixing function of various raw materials is realized; most of the traditional stirring cavities are designed by adopting blades, and the invention develops a new design structure of a wolf tooth shaft in order to improve the mixing efficiency of feeding and mixing and ensure the quick mixing effect of raw materials. Wolf's tooth axle itself possesses certain rigidity, simultaneously through with the interlock and the wrong cooperation of the cooperation tooth of stirring chamber wall department, can show the mixing efficiency who promotes the raw materials. When the stirring device works, the stirring blades at the head end are close to the bottom surface of the hole of the stirring cavity, so that once the raw materials are synchronously extruded out of the transition channel, the raw materials are immediately captured and stirred by the stirring blades at the head end. On one hand, the matching teeth are matched with the stirring blades by utilizing the rotation clearance, so that the shearing type stirring effect on the raw materials is realized; on the other hand, the cooperation tooth utilizes current clearance for the raw materials produces the removal effect by head to tail along pump body circumference when the stirring, finally via the discharge gate discharge, uses very nimble convenience.

3) The transition passage may be formed using a hollow sandwich structure. As a preferable scheme of the scheme, the transition passage is formed by matching the key groove at the material guide column with the wall of the material guide hole. Therefore, on one hand, the design and manufacturing cost can be effectively reduced, and a finished product can be conveniently and quickly formed; on the other hand, the assembled modular structure also enables each module forming a finished product to have extremely strong exchangeability, and the assembled modular structure is very suitable for stirring raw materials with certain corrosiveness and the like.

4) Further, the present invention is applied to a case where two or more raw materials are mixed, but is more applied to a case where three raw materials are mixed. At this time, the number of the transition channels is changed correspondingly. For the installation of the guide column, the installation is realized by the assembly of the gland and the head end flange; of course, the flanging flange of the gland can be directly matched with the head end face of the pump body, and the purpose of convenient assembly can also be achieved.

5) The annular jacket is used for guiding the raw materials at the feed inlet into corresponding key grooves uniformly, and smooth transition of the raw materials from the feed inlet to the corresponding key grooves is realized. During actual design, the through holes can be uniformly distributed and surrounded on the wall of the stirring cavity, and only a corresponding number of key slots are required to be arranged to match with the through holes; theoretically, the larger the number of the key slots, the higher the uniformity of the raw material extruded from the transition passage, and the more favorable the quick equal proportion mixing, and the larger the number of the key slots, the more complicated the manufacturing process, and the key slots can be selected as appropriate in actual operation.

6) For the power source, a common power structure in the market can be used; the invention selects the power motor preferentially and is assembled on the pump body in a tail end bracket mode, thereby ensuring the working reliability of the whole machine.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of the present invention;

FIGS. 2 and 3 are exploded views of the structure of FIG. 1;

FIG. 4 is a schematic perspective view of the structure of FIG. 1, shown in partial section;

FIG. 5 is a schematic semi-sectional view of a three-dimensional configuration of the pump body;

fig. 6 and 7 are schematic views illustrating the assembly of the gland and the guide post.

The actual correspondence between each label and the part name of the invention is as follows:

a-transition channel 10-pump body

11-stirring cavity 11 a-matching teeth 12-material guide hole 13-annular jacket 14-through hole

20-power source 21-stirring shaft 22-stirring blade 22 a-head end stirring blade

30-discharge port 31-discharge channel 40-feed inlet

50-guide column 51-key groove 60-gland 61-outward flange 62-communication hole

70-head end flange 80-tail end support 90-base

Detailed Description

For ease of understanding, the specific construction and operation of the present invention is further described herein with reference to FIGS. 1-7:

the specific structure of the invention is shown in fig. 1-7, and the main structure comprises a base 90 and a working part positioned on the base 90; the working portion includes head end flange 70, pump body 10, tail end support 80 and the power motor who constitutes power supply 20 that arranges in proper order by head to tail along the axial, wherein:

the pump body 10 is a core workpiece of the present invention, and the shape of the pump body is cylindrical as shown in fig. 2-5, and the cylinder cavity is formed by combining a material guiding hole 12 located in the front half section and a stirring cavity 11 located in the rear half section; during manufacturing, the material guide hole 12 and the stirring chamber 11 are coaxial with each other, thereby forming a through type cylinder chamber structure.

In the stirring chamber 11, a stirring shaft 21 with stirring blades 22 is arranged therein, and the stirring shaft 21 forms a power fit with a power motor. The stirring shaft 21 has a wolf tooth shaft structure, and matches with the matching teeth 11a in the stirring chamber 11 as shown in fig. 5, so as to achieve the purpose of the engagement shear type equal proportion mixing of the raw materials as shown in fig. 4. In designing the stirring shaft 21, it should be noted that the first stirring blade 22a of the stirring shaft 21 needs to be close to the tail end of the material guiding hole 12 as shown in fig. 1, and only a fit clearance capable of making the stirring shaft 21 rotate exists between the first stirring blade and the tail end face of the material guiding column 50 located in the material guiding hole 12, that is, the fit clearance inevitably exists when the movable and stationary parts are fitted. Thus, once the raw material enters the mixing chamber 11 through the transition channel a formed by the material guiding column 50 and the material guiding hole 12, the raw material is immediately captured by the first-end mixing blade 22a and immediately begins to mix, and finally, the possible advanced reaction condition caused by the advanced release of the raw material is effectively avoided.

The shape of the material guiding column 50 can be seen from fig. 6-7, in order to ensure the installation effect, the material guiding column 50 is pressed at the installation step at the head end of the pump body 10 through the outward flange 61 at the gland 60, and then the positioning purpose is completed by the assembly of the head end flange 70. After the installation is completed, the feeding post 50 with spline structure can cooperate with the feeding hole 12 to realize the feeding guiding function. The guide pillar 50 may be a complete spline structure, and the gland 60 is matched to realize the head end closure of the key slot 51, and at this time, the communication between the first feed inlet and the corresponding key slot 51 is realized through the communication hole 62 as shown in fig. 7; the key groove 51 with a closed head end can be manufactured in advance. Even, the key slot 51 may be opened on the guiding column 50, or may be recessed on the wall of the guiding hole 12 to form a transition passage a and perform its "feeding and mixing" predetermined function.

In the actual design, fig. 1-5 show three sets of feed inlets 40, but it is of course possible to use two or four sets or five sets or even more feed inlets 40, and at this time, only the number of the transition passages a needs to be changed correspondingly. When three groups of feed inlets 40 are provided, as shown in fig. 1-5, at this time, the first feed inlet is an axial feed inlet and is assembled on the head end surface of the pump body 10, the second feed inlet and the third feed inlet are radial feed inlets and are sequentially arranged on the outer wall of the pump body 10 along the axial direction, the guide column 50 is in a spline structure, the number of the key slots 51 is multiple of three, and any continuous three groups of key slots 51 in the circumferential direction of the guide column 50 are respectively correspondingly communicated with the three groups of feed inlets 40, so as to ensure uniform discharge. In addition, for the pump body 10, as shown in fig. 4-5, the second inlet and the third inlet should communicate with the key slot 51 at the guiding column 50 through the corresponding annular jacket 13 and the through hole 14 to ensure the guiding effect of the raw material. The discharge port 30 may be integrally disposed at the rear end of the pump body 10, or may be mounted on the rear end bracket 80, so as to accurately receive the mixed material mixed at the rear end of the mixing chamber 11 through the smoothly transitioned discharge passage 31. Meanwhile, the turning part of the discharging channel 31 is smoothly transited to ensure smooth guiding of the mixture. The flow area of the communication holes 62 and the through holes 14 determines the size of the hole area, and will not be described in detail herein.

It will, of course, be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but rather includes the same or similar structures that may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. A mechanical equal proportion on-line feeding mixer is characterized in that: the mixing device comprises a pump body (10), wherein the tail end of the pump body (10) is recessed inwards to form a counter bore-shaped mixing cavity (11), the tail end of the pump body (10) is fixedly connected with a power source (20), a mixing shaft (21) of the power source (20) coaxially extends into the mixing cavity (11), the feeding and mixing purposes are achieved through a mixing blade (22) positioned on the mixing shaft (21), a head end mixing blade (22a) positioned at the head end of the mixing shaft (21) is attached to the bottom surface of a hole of the mixing cavity (11), and only a fit clearance for the rotation of the head end mixing blade exists between the head end mixing blade and the mixing shaft; the mixer also comprises a discharge hole (30) communicated with the stirring cavity (11) and used for discharging, more than two groups of feed holes (40) used for feeding and a transition channel (a) connecting the feed holes (40) with the stirring cavity (11), wherein the outlet end of the transition channel (a) is positioned on the bottom surface of the hole of the stirring cavity (11); the discharge port (30) is communicated with the tail end of the stirring cavity (11), and the turning part of the discharge channel (31) between the discharge port (30) arranged along the radial direction of the pump body (10) and the stirring cavity (11) arranged along the axial direction is in smooth transition.

2. A mechanical equal proportion on-line feed mixer as claimed in claim 1 wherein: the stirring shaft (21) is a wolf tooth shaft, the wolf tooth-shaped protrusions on the outer wall of the stirring shaft (21) form the stirring blades (22), the outer tooth surface of the stirring blade (22a) at the front end is flush with the front end surface of the stirring shaft (21), so that a gap between the front end surface of the stirring shaft (21) and the hole bottom surface of the stirring cavity (11) forms the fit clearance, and raw materials enter the stirring cavity (11) through the outlet end of the transition channel (a) on the hole bottom surface of the stirring cavity (11); the cavity wall of the stirring cavity (11) is convexly provided with matching teeth (11a), each matching tooth (11a) is axially and uniformly distributed along the stirring cavity (11), and a gap between every two axially adjacent matching teeth (11a) forms a rotating gap for the stirring blade (22) to move; meanwhile, all the matching teeth (11a) are uniformly distributed along the circumferential direction of the stirring shaft (21), and gaps between two circumferentially adjacent matching teeth (11a) form passing gaps for raw materials to pass through in the axial direction.

3. A mechanical equal proportion on-line feed mixer as claimed in claim 1 or 2, wherein: the mixer also comprises a material guide column (50), wherein a material guide hole (12) communicated with the stirring cavity (11) is coaxially arranged at the head end face of the pump body (10) in a penetrating way; the material guiding column (50) penetrates into the pump body (10) along the material guiding hole (12), so that the tail end surface of the material guiding column (50) forms the hole bottom surface of the stirring cavity (11); the outer wall of the material guiding column (50) is provided with key grooves (51) penetrating through the tail end face of the material guiding column (50), and a channel formed between a groove cavity of each key groove (51) and the wall of the material guiding hole (12) forms the transition channel (a).

4. A mechanical equal proportion on-line feed mixer as claimed in claim 3 wherein: the three groups of feed inlets (40) are sequentially arranged along the axial direction of the pump body (10), the first feed inlet is an axial feed inlet (40) and is assembled on the head end surface of the pump body (10), and the second feed inlet and the third feed inlet are radial feed inlets (40) and are sequentially arranged on the outer wall of the pump body (10) along the axial direction; the guide column (50) is of a spline structure, the number of the key grooves (51) is multiple of three, and any continuous three groups of key grooves (51) in the circumferential direction of the guide column (50) are respectively communicated with the three groups of feed inlets (40).

5. A mechanical equal proportion on-line feed mixer as claimed in claim 4 wherein: a gland (60) is fixedly connected to the head end face of the material guide column (50) through threads, the gland (60) is in a cylindrical shape which is coaxially and inwards recessed from the head end face of the pump body (10), and an outward flange (61) is arranged at the barrel opening of the gland (60) and is pressed at an installation step at the head end face of the pump body (10); the barrel bottom of the gland (60) is provided with a communication hole (62) which is communicated with the first feed inlet and the corresponding key groove (51) in a penetrating way.

6. A mechanical equal proportion on-line feed mixer as claimed in claim 5 wherein: the mixer further comprises a head end flange (70), a pipe cavity of the head end flange (70) forms the first feed inlet, the head end flange (70) is matched with the head end face of the pump body (10) in a flange mode, and the head end flange (70) tightly presses an outward flanging (61) of the pressing cover (60) at the position of an installation step.

7. A mechanical equal proportion on-line feed mixer as claimed in claim 4 wherein: the pump body (10) is internally and coaxially provided with annular clamping sleeves (13), the two groups of annular clamping sleeves (13) are axially and independently arranged along the pump body (10) according to the sequence, a second feeding hole and a third feeding hole radially penetrate through the pump body (10) and are communicated with sleeve cavities of the corresponding annular clamping sleeves (13), and each annular clamping sleeve (13) is provided with a through hole (14) so as to communicate the sleeve cavity with a material guide column (50) to form a corresponding key groove (51).

8. A mechanical equal proportion on-line feed mixer as claimed in claim 1 or 2, wherein: the power source (20) is a power motor, and the power motor is matched with the tail end face of the pump body (10) through a tail end bracket (80) in a flange manner; the discharge port (30) is arranged on the tail end bracket (80).

9. A mechanical equal proportion on-line feed mixer as claimed in claim 8 wherein: the tail end bracket (80) is arranged on the base (90), and the pump body (10) arranged on the tail end bracket (80) forms a cantilever structure.