CN117755827A - Continuous dense phase positive pressure pneumatic conveying device - Google Patents
Continuous dense phase positive pressure pneumatic conveying device Download PDFInfo
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- CN117755827A CN117755827A CN202410140240.5A CN202410140240A CN117755827A CN 117755827 A CN117755827 A CN 117755827A CN 202410140240 A CN202410140240 A CN 202410140240A CN 117755827 A CN117755827 A CN 117755827A
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Abstract
The invention relates to the technical field of pneumatic conveying devices, in particular to a continuous dense-phase positive-pressure pneumatic conveying device, which comprises: the tank body is sequentially provided with a storage cavity, a distributing cavity, a feeding cavity and a discharging hole along the feeding direction, the distributing mechanism comprises a distributing wheel and a driving piece, the distributing wheel is arranged in the distributing cavity and divides the distributing cavity into a plurality of distributing spaces, the driving piece is arranged on the tank body and connected with the distributing wheel and used for driving the distributing wheel to rotate so that at least one distributing space is communicated with the storage cavity, at least one distributing space is communicated with the feeding cavity, the feeding mechanism comprises a feeding air pipe and a wind source, the feeding air pipe is provided with a nozzle communicated with the feeding cavity, the nozzle is arranged towards the discharging hole, and the wind source is used for providing air flow to the feeding air pipe. According to the continuous dense phase positive pressure pneumatic conveying device, the driving piece is used for controlling the material distributing wheel to rotate so as to convey powder in the material storage cavity into the material feeding cavity, and the rotation speed of the material distributing wheel is regulated, so that the powder metering entering the material feeding cavity can be accurately controlled, the situations that the powder is blocked in a pipeline due to the fact that the powder is fed more and the conveying efficiency of the powder is reduced due to the fact that the powder is fed less are effectively reduced, and the purpose that the powder can be stably conveyed at a constant speed is achieved.
Description
Technical Field
The invention relates to the technical field of pneumatic conveying devices, in particular to a continuous dense-phase positive-pressure pneumatic conveying device.
Background
The utility model provides a positive pressure dense phase pneumatic conveyor is the equipment that utilizes compressed air to promote the material and carry in the pipeline, in the conventional art, and the powder is after getting into the pipeline through the body, utilizes high-speed air current to drive the powder and flows together, under the effect of air current, makes the powder be carried to appointed destination, however, when the powder that gets into the pipeline is more, the air is difficult to flow, easily leads to the powder to block up in the pipeline, when the powder that gets into the pipeline is less, the conveying efficiency of powder reduces, easily leads to the transportation cost to increase, there is the technical problem that the powder is difficult to continuous stable transportation.
Disclosure of Invention
Based on the above, it is necessary to provide a continuous dense-phase positive pressure pneumatic conveying device for solving the technical problem that the conventional powder is difficult to continuously and stably transport.
A continuous dense phase positive pressure pneumatic conveying device, comprising: the tank body is sequentially provided with a storage cavity, a distributing cavity, a feeding cavity and a discharging hole along the feeding direction, the distributing mechanism comprises a distributing wheel and a driving piece, the distributing wheel is arranged in the distributing cavity and divides the distributing cavity into a plurality of distributing spaces, the driving piece is arranged on the tank body and connected with the distributing wheel and used for driving the distributing wheel to rotate so that at least one distributing space is communicated with the storage cavity, at least one distributing space is communicated with the feeding cavity, the feeding mechanism comprises a feeding air pipe and a wind source, the feeding air pipe is provided with a nozzle communicated with the feeding cavity, the nozzle is arranged towards the discharging hole, and the wind source is used for providing air flow to the feeding air pipe.
Above-mentioned continuous dense phase malleation pneumatic conveyor, throw into the storage cavity of jar body with the powder, the driving piece drive branch material wheel of dividing the material mechanism rotates, makes the powder that divides the material space to receive the storage intracavity, carries to the pay-off chamber, provides the air current for the pay-off tuber pipe through the wind regime, and the pay-off tuber pipe sprays high-speed air current towards the discharge gate, drives the powder that carries to the pay-off chamber and send from the discharge gate to leave the jar body to realize the transport of powder. Through above-mentioned design, adopt driving piece control feed divider to rotate in order to carry the powder of storage intracavity to the mode of pay-off intracavity, through adjusting the rotational speed of feed divider, can have accurate control to get into the powder measurement of pay-off intracavity to effectively reduce the powder because of sending more and the powder that leads to blocks up in the pipeline and the circumstances that the conveying efficiency that the powder leads to reduces because of sending less, reach the purpose that the powder can stabilize the transportation at uniform velocity.
In one embodiment, the material distributing wheel comprises a rotating shaft and a plurality of blades, wherein the rotating shaft is connected with the driving piece, and the blades are arranged on the rotating shaft at intervals along the circumferential direction of the rotating shaft so as to divide the material distributing cavity into a plurality of material distributing spaces.
In one embodiment, the feeding mechanism further comprises an adjusting component connected with the tank body, the adjusting component is connected with the feeding air pipe to adjust the distance between the nozzle and the discharge hole, the distance between the nozzle and the discharge hole is adjusted according to the rotating speed of the distributing wheel, and the distance between the nozzle and the discharge hole is reduced when the rotating speed of the distributing wheel is increased.
In one embodiment, the adjusting assembly comprises a sleeve, a connecting rod, a first switching frame and a first locking piece, wherein the sleeve is connected with the tank body and sleeved on the feeding air pipe, the connecting rod is arranged on the sleeve, the first switching frame is arranged on the connecting rod in a sliding mode and connected with the feeding air pipe, and the first locking piece is arranged on the connecting rod and matched with the connecting rod to lock the first switching frame.
In one embodiment, the sleeve is provided with an avoidance port, the bottom end of the first switching frame is connected with the outside of the feeding air pipe, and the top end of the first switching frame penetrates through the avoidance port to extend out of the sleeve.
In one embodiment, a first through hole is formed in the top end of the first adapter frame, the connecting rod movably penetrates through the first through hole, a first threaded section is formed in the connecting rod, the first locking piece is a threaded sleeve, the first locking piece is sleeved on the first threaded section and is in threaded fit connection with the first threaded section, and one end of the first locking piece abuts against the first adapter piece.
In one embodiment, a second adapter bracket is arranged on the outer part of the sleeve, and one end of the connecting rod is connected with the second adapter bracket.
In one embodiment, a second through hole is formed in the top end of the second adapter frame, one end of the connecting rod penetrates through the second through hole, a second threaded section is formed in the connecting rod, the second locking piece is a threaded sleeve, the second locking piece is sleeved on the second threaded section and is in threaded fit connection with the second threaded section, and one end of the second locking piece abuts against the second adapter piece.
In one embodiment, the feeding mechanism further comprises a switching tube and a sealing piece, the switching tube is provided with an air cavity for receiving air flow and a clamping groove for communicating the air cavity, the air cavity is communicated with the feeding air pipe, and the sealing piece is arranged in the clamping groove and is in sealing connection with the outer wall of the feeding air pipe.
In one embodiment, the tank body comprises a tank body, a connecting pipe and an air supplementing component, wherein the tank body is provided with a storage cavity, a distribution cavity, a feeding cavity and a discharging hole, the tank body is connected with the connecting pipe, the connecting pipe is connected with an adjusting component of the feeding mechanism, and the air supplementing component is arranged on the connecting pipe.
Drawings
FIG. 1 is a schematic structural diagram of a continuous dense phase positive pressure pneumatic conveying device according to an embodiment of the invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of one view of the continuous dense phase positive pressure pneumatic conveying apparatus shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the continuous dense phase positive pressure pneumatic conveying apparatus shown in FIG. 1 from another perspective;
fig. 4 is an enlarged schematic diagram of a portion a of the continuous dense phase positive pressure pneumatic conveying apparatus shown in fig. 2.
The meaning of the reference numerals in the drawings are:
100. a continuous dense phase positive pressure pneumatic conveying device;
10. a can body; 11. a storage cavity; 12. a material distribution cavity; 13. a feed cavity; 14. a discharge port; 15. a tank body; 16. a connecting pipe; 17. an air supplementing component; 171. an air duct; 172. a filter element; 173. a filter housing; 174. an air guide hole; 18. a gas injection hole; 19. an air supply pipe;
20. a material distributing mechanism; 21. a material distributing wheel; 211. a rotating shaft; 212. a blade; 22. a driving member;
30. a feeding mechanism; 31. a feeding air pipe; 311. a spout; 32. an adjustment assembly; 33. a sleeve; 331. an avoidance port; 34. a connecting rod; 35. a first transfer rack; 351. a first through hole; 36. a first locking member; 37. a second transfer frame; 371. a second through hole; 38. a transfer tube; 381. a wind chamber; 382. a clamping groove; 39. and a seal.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
As shown in FIG. 1, the continuous dense phase positive pressure pneumatic conveying device 100 is used for conveying powder.
As shown in fig. 1 to 2, the continuous dense phase positive pressure pneumatic conveying apparatus 100 includes: the powder feeding device comprises a tank body 10, a distributing mechanism 20 and a feeding mechanism 30, wherein the tank body 10 is used for loading powder, the distributing mechanism 20 is arranged on the tank body 10 and used for separating the loaded powder, the speed of the separated powder to the feeding mechanism 30 is controlled, the feeding mechanism 30 is used for conveying the powder conveyed by the distributing mechanism 20 away from the tank body 10, the mode of separating the loaded powder and controlling the speed of the separated powder to the feeding mechanism 30 is adopted, and the stable conveying of the powder by the feeding mechanism 30 is facilitated, so that the stable and uniform conveying of the powder is achieved.
Hereinafter, the continuous dense phase positive pressure pneumatic conveying apparatus 100 described above will be further described with reference to fig. 1 to 4.
As shown in fig. 2, the can body 10 is sequentially provided with a storage cavity 11, a distribution cavity 12, a feeding cavity 13 and a discharge hole 14 along a feeding direction, the storage cavity 11 is used for receiving powder, the distribution cavity 12 is used for supplying a distribution mechanism 20 to separate the powder in the storage cavity 11, the feeding cavity 13 is used for receiving the separated powder, the discharge hole 14 is used for supplying the separated powder to be sent out of the can body 10, specifically, the can body 10 comprises a can body 15, a connecting pipe 16 and a gas supplementing assembly 17, wherein the can body 15 is provided with the storage cavity 11, the distribution cavity 12, the feeding cavity 13 and the discharge hole 14, the feeding cavity 13 of the can body 15 is communicated with the connecting pipe 16, the connecting pipe 16 is connected with the feeding mechanism 30, and the gas supplementing assembly 17 is installed on the connecting pipe 16 and used for supplementing gas entering the feeding cavity 13 so as to avoid insufficient gas in the feeding cavity 13 and difficult entering the feeding cavity 13 after separation.
Specifically, in order to avoid air pollution powder entering the feeding cavity 13, as shown in fig. 2 and 4, the air supplementing assembly 17 comprises an air duct 171, a filter element 172 and a filter shell 173, the air duct is communicated with the connecting pipe 16, the filter element 172 is mounted on the air duct, the filter shell 173 covers the filter element 172 and is provided with an air duct 174, and air enters the connecting pipe 16 through the filter element 172 and the air duct 171 under the filtration of the air duct 174, so that the air entering the feeding cavity 13 is supplemented, and the air entering the feeding cavity 13 can be effectively filtered through the cooperation of the air duct and the filter element 172, so that the purpose of avoiding air pollution powder entering the feeding cavity 13 is achieved.
Further, in order to avoid powder attached to the inner wall of the feeding cavity 13 in the feeding cavity 13, as shown in fig. 2 and 3, the inner wall of the feeding cavity 13 is provided with a plurality of air injection holes 18 communicated with the feeding cavity 13, each air injection hole 18 is respectively and correspondingly arranged on each inner wall of the feeding cavity 13, and air is injected through the air injection holes 18, so that the powder attached to the inner wall of the feeding cavity 13 can be effectively blown to a suspension state, and the feeding mechanism 30 can send the powder out of the tank body 10, thereby achieving the purpose of avoiding the powder attached to the inner wall of the feeding cavity 13 in the feeding cavity 13.
Specifically, the tank body 10 further includes air supply pipes 19 connected to the tank body 15, the number of the air supply pipes 19 is the same as the number of the air injection holes 18, each air supply pipe 19 is connected to each air injection hole 18 in a one-to-one correspondence manner, and each air supply pipe 19 is connected to an air source to provide air flow injected from the air injection hole 18 through the air source.
As shown in fig. 2, the distributing mechanism 20 includes a distributing wheel 21 and a driving member 22, the distributing wheel 21 is mounted in the distributing chamber 12 and separates the distributing chamber 12 into a plurality of distributing spaces, the driving member 22 is a motor, the driving member 22 is disposed on the can body 10 and connected with the distributing wheel 21, and is used for driving the distributing wheel 21 to rotate so as to enable at least one distributing space to be communicated with the material storage chamber 11, at least one distributing space is communicated with the material feeding chamber 13, specifically, the distributing wheel 21 includes a rotating shaft 211 and a plurality of blades 212, the rotating shaft 211 is connected with the driving member 22, the blades 212 are disposed on the rotating shaft 211 along the circumferential direction of the rotating shaft 211 at intervals so as to separate the distributing chamber 12 into a plurality of distributing spaces, the driving member 22 drives the rotating shaft 211 to rotate through a driving belt, and the driving member 22 is used for controlling the rotating shaft 211 to drive each blade 212 to rotate, so that powder entering the distributing chamber 12 through the material storage chamber 11 is transported down to the material feeding chamber 13 in the distributing space, and the quantitative powder storage chamber 11 can be quantitatively conveyed through the rotating shaft 211.
As shown in fig. 2 and 3, the feeding mechanism 30 includes a feeding air pipe 31 and an air source, the feeding air pipe 31 has a nozzle 311 communicated with the feeding cavity 13, the nozzle 311 is disposed towards the discharge port 14, the air source is used for providing air flow into the feeding air pipe 31, and the nozzle 311 sprays high-speed air flow to the discharge port 14 through the air flow provided by the air source, so that powder in the feeding cavity 13 is sent out of the can body 10 through the discharge port 14.
Further, as shown in fig. 2 and 4, the feeding mechanism 30 further includes an adjusting component 32 connected to the can body 10, where the adjusting component 32 is connected to the feeding air pipe 31 to adjust the distance between the nozzle 311 and the discharge hole 14, the distance between the nozzle 311 and the discharge hole 14 is adjusted according to the rotation speed of the distributing wheel 21, and when the rotation speed of the distributing wheel 21 is increased, the distance between the nozzle 311 and the discharge hole 14 is reduced, and it is understood that when the rotation speed of the distributing wheel 21 is reduced, the distance between the nozzle 311 and the discharge hole 14 can be increased to realize stable conveying of powder, for example, according to the viscosity and density of the materials, the rotation speed of the distributing wheel, and the installation position, the distance between the nozzle 311 and the discharge hole 14 can be adjusted by combining with the on-site layout, and the horizontal, vertical and oblique arrangement, so as to realize the optimal conveying state of the powder.
Specifically, as shown in fig. 4, the adjusting component 32 includes a sleeve 33, a connecting rod 34, a first adapting frame 35 and a first locking member 36, the sleeve 33 is connected with the connecting pipe 16 of the tank body 10 and sleeved on the feeding air pipe 31, the sleeve 33 is used for supporting and protecting the feeding air pipe 31, the connecting rod 34 is mounted on the sleeve 33, the first adapting frame 35 is slidably arranged on the connecting rod 34 and connected with the feeding air pipe 31, the first locking member 36 is mounted on the connecting rod 34 and matched with the connecting rod 34 to lock the first adapting frame 35, the sleeve 33 is provided with a avoiding opening 331, the bottom end of the first adapting frame 35 is connected with the outside of the feeding air pipe 31, the top end of the first adapting frame 35 passes through the avoiding opening 331 and extends out of the sleeve 33, the top end of the first adapting frame 35 is provided with a first through hole 351, the connecting rod 34 is movably sleeved on the first through hole 351, the connecting rod 34 is provided with a first thread section, the first locking member 36 is sleeved on the first thread section and is in threaded fit with the first thread section, one end of the first locking member 36 abuts against the first adapting frame 35, the first adapting frame 35 is in a matched manner, and the number of the first locking members 36 is pressed by the first adapting frames 35.
When the relative positions of the nozzle 311 of the feeding air pipe 31 and the discharge port 14 need to be adjusted, the first locking pieces 36 are unscrewed, so that each first locking piece 36 is separated from the first transfer frame 35, after the first transfer frame 35 is adjusted to a preset position, each first locking piece 36 is screwed, so that each first locking piece 36 clamps the first transfer frame 35 to be fixedly connected with the feeding air pipe 31 of the first transfer frame 35, and the relative positions of the nozzle 311 of the feeding air pipe 31 and the discharge port 14 are adjusted.
It will be appreciated that, as shown in fig. 4, the outer part of the sleeve 33 is provided with a second adapting frame 37, one end of the connecting rod 34 is connected with the second adapting frame 37, the top end of the second adapting frame 37 is provided with a second through hole 371, one end of the connecting rod 34 is arranged through the second through hole 371, the connecting rod 34 is provided with a second thread section, the second locking member is a thread sleeve, the second locking member is sleeved on the second thread section and is in threaded fit connection with the second thread section, one end of the second locking member abuts against the second adapting member, the same number of the second locking members as the first locking member 36 is two, the second adapting frame 37 is mutually extruded by the two second locking members to clamp the second adapting frame 37 on the connecting rod 34, and the relative position between the nozzle 311 of the feeding air pipe 31 and the discharge hole 14 can be adjusted,
when the relative position of the nozzle 311 of the feeding air pipe 31 and the discharge port 14 needs to be adjusted, the second locking pieces are unscrewed, so that each second locking piece is separated from the second switching frame 37, the connecting rod 34 is controlled to slide along the second switching frame 37, after the connecting rod 34 is adjusted to a preset position, each second locking piece is screwed, and each second locking piece clamps the second switching frame 37 so as to be fixedly connected with the connecting rod 34 of the second switching frame 37, thereby controlling the relative position of the nozzle 311 of the feeding air pipe 31 and the discharge port 14 connected with the connecting rod 34 and realizing the adjustment of the relative position of the nozzle 311 of the feeding air pipe 31 and the discharge port 14.
As shown in fig. 3 and 4, the feeding mechanism 30 further includes a transfer tube 38 and a sealing member 39, the transfer tube 38 is provided with an air cavity 381 for receiving air flow and a clamping groove 382 for communicating the air cavity 381, the air cavity 381 is communicated with the feeding air duct 31, the sealing member 39 is disposed in the clamping groove 382 and is in sealing connection with the outer wall of the feeding air duct 31, wherein the sealing member 39 is a sealing ring, and the air source provides air flow for the feeding air duct 31 through the air cavity 381, so that air leakage caused by a gap at the joint of the air source and the feeding air duct 31 after displacement of the feeding air duct 31 can be avoided, and the flow speed of the air flow sprayed by the nozzle 311 of the feeding air duct 31 is affected.
The working principle of the continuous dense phase positive pressure pneumatic conveying device 100 provided by the invention is as follows: the powder is put into the storage cavity 11 of the tank body 10, the driving piece 22 of the distributing mechanism 20 drives the distributing wheel 21 to rotate, so that the distributing space receives the powder in the storage cavity 11 and conveys the powder to the feeding cavity 13, the air source supplies air flow to the feeding air pipe 31, the feeding air pipe 31 sprays high-speed air flow towards the discharging hole 14, and the powder conveyed to the feeding cavity 13 is driven to be conveyed away from the tank body 10 from the discharging hole 14, so that the powder conveying is realized.
The continuous dense phase positive pressure pneumatic conveying device 100 has the beneficial effects that: the mode that the driving piece 22 controls the material distributing wheel 21 to rotate so as to convey the powder in the material storage cavity 11 into the material feeding cavity 13 is adopted, the powder metering in the material feeding cavity 13 can be accurately controlled by adjusting the rotating speed of the material distributing wheel 21, and therefore the situations that the powder is blocked in a pipeline due to the fact that the powder is sent more and the conveying efficiency of the powder is reduced due to the fact that the powder is sent less are effectively reduced, and the purpose that the powder can be stably conveyed at a uniform speed is achieved. In some situations, the tank body 10 can be selected as a pipeline for receiving powder, and the tank body 10 can be combined with on-site layout, horizontal, vertical and inclined arrangement according to the specific situation of a feeding system, so that the influence of air velocity change of the pipeline at an elbow and a reducing position on the conveying speed of the powder is reduced, and stable and uniform conveying of the powder is realized.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140240.5A CN117755827A (en) | 2024-01-31 | 2024-01-31 | Continuous dense phase positive pressure pneumatic conveying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140240.5A CN117755827A (en) | 2024-01-31 | 2024-01-31 | Continuous dense phase positive pressure pneumatic conveying device |
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| CN117755827A true CN117755827A (en) | 2024-03-26 |
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| CN202410140240.5A Pending CN117755827A (en) | 2024-01-31 | 2024-01-31 | Continuous dense phase positive pressure pneumatic conveying device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202704574U (en) * | 2012-08-01 | 2013-01-30 | 浙江宏宇环保工程设备有限公司 | Novel pneumatic injection pump |
| CN104803197A (en) * | 2015-04-09 | 2015-07-29 | 郑州市东鼎干燥设备有限公司 | Powdery material spraying pump |
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2024
- 2024-01-31 CN CN202410140240.5A patent/CN117755827A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202704574U (en) * | 2012-08-01 | 2013-01-30 | 浙江宏宇环保工程设备有限公司 | Novel pneumatic injection pump |
| CN104803197A (en) * | 2015-04-09 | 2015-07-29 | 郑州市东鼎干燥设备有限公司 | Powdery material spraying pump |
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