CN116816656A

CN116816656A - Material conveying transition mechanism, pumping device and spraying equipment

Info

Publication number: CN116816656A
Application number: CN202210288327.8A
Authority: CN
Inventors: 李建明; 李铁芳; 乔垒; 杨军; 周黎
Original assignee: Guangdong Bozhilin Robot Co Ltd
Current assignee: Guangdong Bozhilin Robot Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2023-09-29

Abstract

The application relates to the technical field of spraying equipment, in particular to a material conveying transition mechanism, a pumping device and spraying equipment. The material conveying transition mechanism comprises: the body is provided with a piston cavity; the piston is arranged in the piston cavity; the feeding port and the discharging port are arranged on the body and are communicated with the piston cavity, and the feeding port and the discharging port are positioned on one side of the piston; the elastic energy storage piece is arranged in the piston cavity and is positioned at the other side of the piston, and is configured to deform and store elastic potential energy when the piston is pushed by slurry entering from the feeding port, and push the piston to extrude the slurry from the discharging port when the deformation is recovered; the piston cavity comprises a first end wall and a side wall, the first end wall is located on one side of the piston, the side wall is arranged on the first end wall in a surrounding mode, and the feeding port is formed in the side wall of the piston cavity. The material conveying transition mechanism provided by the application can relieve the problems of internal blockage and slurry segregation of the material conveying transition mechanism, and ensure stable and continuous material feeding.

Description

Material conveying transition mechanism, pumping device and spraying equipment

Technical Field

The application relates to the technical field of spraying equipment, in particular to a material conveying transition mechanism, a pumping device and spraying equipment.

Background

Along with the technical development, the building trade is gradually by artifical construction to mechanized, automated conversion, like in plastering construction, the artifical spraying is replaced to current spraying equipment, spraying equipment is equipped with pumping device and spray gun generally, output the thick liquids to the spray gun through pumping device, in order to guarantee that pumping device ejection of compact is even, the discharge volume is big and continuous, still be equipped with the transition device that can buffer the thick liquids between pumping device and spray gun, transition device includes the buffer memory chamber and sets up the elastic energy storage spare in the buffer memory chamber, the pan feeding mouth of buffer memory chamber, the discharge gate is all relative with the piston, thick liquids get into the buffer memory chamber from the pan feeding mouth and promote the elastic energy storage spare and realize storing elastic potential energy, the elastic energy storage spare releases the discharge gate in buffer memory chamber with thick liquids when elastic potential energy spare releases elastic potential energy. When the elastic energy storage is used for pushing the slurry to the discharge port, the slurry is blocked at the feed port, so that aggregates in the slurry are easily accumulated at the feed port, the accumulated aggregates can further block the slurry output, and further, the slurry segregation (larger particles are separated from water and smaller particles) is caused to produce linkage reactions for accumulating more aggregates, so that the problems of blockage and segregation are difficult to alleviate.

Disclosure of Invention

The application aims to provide a material conveying transition mechanism, a pumping device and spraying equipment so as to solve the problems of slurry blockage and segregation.

Embodiments of the present application are implemented as follows:

in a first aspect, an embodiment of the present application provides a material conveying transition mechanism, including:

the body is provided with a piston cavity;

the piston is arranged in the piston cavity;

the feeding port and the discharging port are arranged on the body and are communicated with the piston cavity, and the feeding port and the discharging port are positioned on one side of the piston;

the elastic energy storage piece is arranged in the piston cavity and is positioned at the other side of the piston, and is configured to deform and store elastic potential energy when the piston is pushed by the slurry entering from the feeding port, and push the piston to extrude the slurry from the discharging port when the deformation is restored;

the piston cavity comprises a first end wall and a side wall, the first end wall is located on one side of the piston, the side wall is arranged on the first end wall in a surrounding mode, and the feeding port is formed in the side wall of the piston cavity.

According to the material conveying transition mechanism provided by the application, the feeding port and the discharging port are arranged on one side of the piston, the elastic energy storage piece is arranged on the other side of the piston, stable and continuous feeding is realized, and the feeding port is arranged on the side wall of the piston cavity, so that the advancing direction and the feeding direction of the piston are different, the aggregate is prevented from being piled at the feeding port, and the linkage reaction of the aggregate continuously piled and causing slurry segregation is avoided, so that the problems of internal blockage and slurry segregation of the material conveying transition mechanism are relieved, and the material conveying transition mechanism provided by the application can be suitable for slurry with coarse aggregate.

In one embodiment of the application, the feed opening is closer to the first end wall than the piston.

In the technical scheme, the feeding port is beyond the stroke of the piston, so that the piston is prevented from shielding the feeding port, smooth feeding is ensured, and the stability of the conveying transition mechanism is improved.

In one embodiment of the application, the piston chamber further comprises a second end wall disposed opposite the first end wall, the second end wall being on the other side of the piston; the material conveying transition mechanism further comprises: a sliding rod comprising a first section connected to the piston and a second section passing through the second end wall and extending out of the body; and the limiting piece is connected with the second section and is abutted to the outer surface of the body so as to limit the piston to move towards the first end wall.

In the technical scheme, on one hand, the stroke of the piston is limited through the sliding rod and the limiting piece, so that the feeding port is ensured to be out of the stroke of the piston; on the other hand, the slide bar can also act as a marker to show the position of the piston during its movement.

In one embodiment of the present application, the second section is provided with external threads, the limiting member is a nut, and the limiting member is in threaded fit with the second section.

In the technical scheme, the limiting piece can move along the second section to adjust the stroke of the piston, the stroke is reduced in the conventional state to prevent the piston from passing through the feeding port, and the stroke is adjusted to be maximum before stopping working, so that the piston can move to the first end wall to ensure that the slurry in the piston cavity is completely pushed out.

In one embodiment of the application, the elastic energy storage element is configured to be supported between the second end wall and the piston.

In the technical scheme, the elastic energy storage piece is arranged between the second end wall and the piston in a precompressed state, so that pressure is generated on the elastic energy storage piece in the moving process of the piston, and the discharging stability is further ensured.

In one embodiment of the application, the discharge opening is provided in the first end wall.

In the technical scheme, the discharging direction of the discharging hole is the same as the pushing direction of the piston, so that the discharging power is improved, the blocking of the discharging hole is prevented, and the segregation problem is relieved.

In one embodiment of the application, the caliber of the discharge port is not smaller than the inner diameter of the piston cavity.

In the above technical scheme, the caliber of the discharge port is not smaller than the inner diameter of the piston cavity, namely the discharge port completely covers one end of the piston cavity, and the discharge port can be understood as canceling the first end wall, so that the slurry can directly enter the discharge port and cannot be extruded before entering the discharge port to generate segregation phenomenon, thereby avoiding the accumulation of mortar at the discharge port and further solving the problems of blockage and segregation. On the other hand, compare prior art, under the unchangeable circumstances of bore of discharge gate, the diameter of piston chamber can set up less to can reduce the whole volume and the quality of defeated material transition mechanism.

In one embodiment of the present application, the material conveying transition mechanism further comprises a material discharging pipe, wherein the material discharging pipe comprises a first end and a second end, the first end is connected to the material discharging hole, and the inner diameter of the material discharging pipe gradually decreases from the first end to the second end.

In the technical scheme, the discharging pipe is conical, the conical large end faces the piston cavity, the inner wall of the discharging pipe has a guiding function, the smooth flow of slurry is guaranteed, the slurry is less in sedimentation in the piston cavity, and the slurry is not easy to dehydrate and harden in the piston cavity.

In one embodiment of the application, the material conveying transition mechanism further comprises a one-way valve, and the one-way valve is arranged at the material inlet.

In the technical scheme, through setting up the check valve, seal the pan feeding mouth when the piston impels and extrudes thick liquids, further prevent thick liquids and pile up in pan feeding mouth department, alleviate the problem that thick liquids blockked up and isolated.

In one embodiment of the application, the one-way valve comprises a mounting seat, a baffle, a rotating pin, a pull rod and a tension spring, wherein the mounting seat is arranged at the feeding hole and is connected with the body, the baffle is connected with the mounting seat through the rotating pin and covers the feeding hole, the end part of the rotating pin extends to the outer surface of the mounting seat, the pull rod is fixedly connected with the end part of the rotating pin, one end of the tension spring is fixed relative to the mounting seat, and the other end of the tension spring is connected with the pull rod so as to drive the baffle to seal the feeding hole.

In the technical scheme, the one-way valve is an integral module, the structures such as the tension spring and the pull rod are arranged outside the mounting seat, slurry cannot be blocked, the problems of blockage and segregation are not easy to occur, functional components such as the tension spring and the pull rod are not easy to be corroded by the slurry, and the stability of the one-way valve is improved. On the other hand, the pull rod is convenient to observe from the outside to judge whether the baffle shields the feed inlet, thereby being convenient for overhaul the check valve.

In an embodiment of the application, the one-way valve further includes a connecting seat, the connecting seat is connected to the mounting seat, the connecting seat is provided with a plurality of connecting positions, the distances between the connecting positions and the pull rod are different, and one end of the tension spring is alternatively connected to the connecting positions.

In the technical scheme, the tension of the tension spring is regulated by arranging the connecting seat with a plurality of connecting positions, so that the check valve can reliably operate.

In one embodiment of the application, the mounting seat comprises a first surface facing the interior of the piston cavity, the mounting seat is provided with a through hole communicated with the feeding hole, one end of the through hole penetrates through the first surface, and the baffle plate covers the through hole.

In the technical scheme, the baffle covers the through hole to realize the sealing of the feed inlet, so that the check valve can be conveniently debugged and confirmed before being installed.

In one embodiment of the application, the mounting seat further comprises a second surface facing away from the interior of the piston cavity, the other end of the through hole penetrates to the second surface, and the material conveying transition mechanism further comprises a feeding pipe connected to the second surface and communicated with the through hole.

In the technical scheme, the mounting seat plays a role in connecting the feeding pipe at the same time, so that the assembly is convenient.

In a second aspect, an embodiment of the present application provides a pumping device, which includes a power pump and the foregoing material conveying transition mechanism, where an output end of the power pump is connected to a material inlet of the material conveying transition mechanism.

According to the pumping device provided by the application, through the arrangement of the power pump and the material conveying transition mechanism, not only is the slurry output ensured continuously and stably in a large flow, but also the slurry is not easy to block and separate, the discharging stability of the pumping device is further improved, and the pumping device can be suitable for slurry with large-particle aggregate.

In a third aspect, embodiments of the present application provide a spray coating device comprising:

the storage device is used for storing the slurry;

the spraying device is used for spraying the slurry;

the pumping device is connected with the storage device and the spraying device so as to output the slurry stored by the storage device to the spraying device.

The spraying equipment provided by the application has better discharging stability and high working efficiency under the cooperation of the pumping device and the spraying device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a spray coating apparatus according to an embodiment of the present application;

FIG. 2 is an exploded view of a material transfer transition mechanism according to an embodiment of the present application;

FIG. 3 is a first cross-sectional view of a material transfer transition mechanism according to an embodiment of the present application;

FIG. 4 is an exploded view of a check valve and feed tube according to one embodiment of the present application;

FIG. 5 is a partial cross-sectional view of a check valve and feed tube provided in one embodiment of the present application;

fig. 6 is a second cross-sectional view of a material transfer transition mechanism according to an embodiment of the present application.

Icon: 1000-a storage device; 2000-pumping means; 3000-spraying device; 4000-conveying pipe; 100-a power pump; 200-a material conveying transition mechanism; 1-a body; 11-a piston chamber; 12-side walls; 14-a second end wall; 2-a piston; 21-a sealing ring; 22-elastic plates; 23-hard plates; 3-an elastic energy storage member; 4-a sliding rod; 41-a first section; 42-a second section; 5-limiting pieces; 6, a discharging pipe; 61-a first end; 62-a second end; 7-a one-way valve; 71-mounting seats; 711-first surface; 712-a second surface; 713-a through hole; 72-baffle; 73-rotating pins; 74-pull rod; 741-a second connecting rod; 75-tension springs; 76-connecting seat; 761-a linker; 762-a first connecting rod; 8-feeding pipe; i-a feed inlet; II-a discharge hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Examples

With the development of technology, the construction industry gradually changes from manual construction to mechanization and automation, such as plastering operation of building inner walls or floors, which is generally done manually at present, but spray equipment is gradually adopted to replace manual spraying of paint on working surfaces.

The spraying equipment is generally provided with a pumping device and a spray gun, slurry is output to the spray gun through the pumping device and sprayed on a working surface through the spray gun, in order to ensure that the discharge of the pumping device is uniform, the discharge amount is large and continuous, a transition device capable of buffering the slurry is further arranged between the pumping device and the spray gun, the transition device comprises a buffering cavity and an elastic energy storage part arranged in the buffering cavity, a material inlet and a material outlet of the buffering cavity are opposite to a piston, the slurry enters the buffering cavity from the material inlet and pushes the elastic energy storage part to store elastic potential energy, and the slurry is pushed out from the material outlet of the buffering cavity when the elastic energy storage part releases the elastic potential energy. When the slurry is pushed to the discharge port, the slurry is easy to extrude at the feed port, so that aggregates in the slurry are easy to accumulate at the feed port, the accumulated aggregates can further obstruct slurry output, and further, slurry segregation (larger particles are separated from water and smaller particles) is caused to produce linkage reactions of accumulating more aggregates, and therefore, the problems of blockage and segregation are difficult to alleviate. The inventor further researches that this is caused by the fact that the feed inlet and the discharge outlet are arranged on the same side of the piston, and the feed direction of the feed inlet is the same as the advancing direction of the elastic energy storage element.

In view of the above, the present application provides a solution, a material conveying transition mechanism includes a body, a piston and an elastic energy storage element, the body is provided with a piston cavity, the piston is disposed in the piston cavity, the body is provided with a material inlet and a material outlet which are communicated with the piston cavity, the material inlet and the material outlet are located at one side of the piston, the elastic energy storage element is disposed in the piston cavity and located at the other side of the piston, the elastic energy storage element is configured to deform and store elastic potential energy when the piston is pushed by slurry entering from the material inlet, and to push the piston to extrude the slurry from the material outlet when the deformation is recovered, wherein the piston cavity includes a first end wall and a side wall, the first end wall is located at one side of the piston, the side wall is enclosed at the first end wall, and the material inlet is disposed at the side wall of the piston cavity.

According to the feeding transition mechanism provided by the application, the feeding port and the discharging port are arranged on one side of the piston, the elastic energy storage piece is arranged on the other side of the piston, and the feeding port is arranged on the side wall of the piston cavity, so that the piston is different in advancing direction and feeding direction, and aggregate accumulation caused by blocking of the slurry at the discharging port when the piston pushes out the slurry is avoided, so that chain reactions of slurry segregation and continuous aggregate accumulation are avoided, the problems of internal blockage and slurry segregation of the feeding transition mechanism are relieved, and stable and continuous feeding is ensured.

The material conveying transition mechanism provided by the application is not only suitable for slurry without aggregate and fine aggregate, but also suitable for slurry with coarse aggregate, such as putty, paint thin plastering mortar, thick plastering mortar and the like. The material conveying transition mechanism provided by the application is not only suitable for spraying equipment for buildings, but also suitable for other types of slurry conveying equipment, and realizes large-flow, continuous and stable output of slurry.

In the following, a spray device is described as an example, and fig. 1 shows a spray device.

As shown in fig. 1, the spraying apparatus includes a stock device 1000, a spraying device 3000, and a pumping device 2000.

The storage device 1000 is used for storing slurry, the spraying device 3000 is used for spraying the slurry on a working surface (such as a ground surface or a wall surface), and the pumping device 2000 is connected with the storage device 1000 and the spraying device 3000 so as to output the slurry stored in the storage device 1000 to the spraying device 3000. Alternatively, the spraying device 3000 is a spray gun.

The pumping device 2000 comprises a power pump 100 and a material conveying transition mechanism 200, wherein the power pump 100 is connected with a storage device 1000, the material conveying transition mechanism 200 is connected to an outlet of the power pump 100, and the material conveying transition mechanism 200 is connected with a spray gun through a material conveying pipe 4000.

Alternatively, the power pump 100 is a plunger pump, which has the characteristic of large discharge amount, but the discharge mode is pulse discharge, and the discharge is discontinuous. Alternatively, the power pump 100 is a screw pump, and the screw pump has a relatively stable discharge relative to the plunger pump, but when the storage amount in the storage device 1000 is small, there is a problem that the discharge is discontinuous and uneven. Through setting up defeated material transition mechanism 200, the buffering thick liquids to through elastic energy storage spare 3, piston 2 cooperation, realize exporting thick liquids continuously, evenly to spraying device 3000, the defeated material transition mechanism 200 that this embodiment provided simultaneously still has the effect that is difficult to lead to blockking up and is difficult to lead to the thick liquids segregation, can guarantee that thick liquids are stable, high-efficient transport, make spraying device 3000 can continuous steady operation, spraying equipment overall work efficiency is higher.

As shown in fig. 2 and 3, the material conveying transition mechanism 200 provided by the application comprises a body 1, a piston 2 and an elastic energy storage element 3.

The body 1 is provided with a piston cavity 11, and the body 1 is also provided with a feed inlet I and a discharge outlet II which are communicated with the piston cavity 11.

The piston 2 and the elastic energy storage element 3 are arranged in the piston cavity 11, the feeding port I and the discharging port II are positioned on one side of the piston 2, and the elastic energy storage element 3 is positioned on the other side of the piston 2.

Optionally, as shown in fig. 3, a sealing ring 21 is sleeved on the outer peripheral surface of the piston 2, and the outer peripheral surface of the piston 2 and the side wall 12 of the piston cavity 11 cooperate with the sealing ring 21 to seal a gap between the outer peripheral surface of the piston 2 and the side wall 12 of the piston cavity 11 so as to prevent slurry from leaking to the other side of the piston 2.

Optionally, one side of the piston 2 is further provided with an elastic plate 22 and a hard plate 23, the elastic plate 22 is located between the hard plate 23 and the piston 2, the hard plate 23 is connected with the piston 2 to press the elastic plate 22, and the outer circumferential surface of the elastic plate 22 is in close contact with the side wall 12 to restrict the slurry from passing through the gap between the outer circumferential surface of the piston 2 and the side wall 12. The elastic plate 22 can be an elastic rubber plate, and the hard plate 23 can be a hard plastic plate, a stainless steel plate and the like.

The elastic energy storage member 3 is configured to deform and store elastic potential energy when the piston 2 is pushed by the slurry entering from the inlet port I, and to push the piston 2 to push the slurry out of the outlet port II when the deformation is restored. The elastic energy storage element 3 can be one of an elastic membrane, a metal spring, an elastic air bag and a nitrogen spring. The elastic energy storage element 3 is illustratively a nitrogen spring.

The piston cavity 11 comprises a first end wall and a side wall 12, the first end wall is located on one side of the piston 2, the side wall 12 is arranged on the first end wall in a surrounding mode, and the feeding port I is formed in the side wall 12 of the piston cavity 11.

At the pumping pressure of the power pump 100, the slurry enters from the inlet I in the radial direction of the piston chamber 11 and presses the side of the piston 2 facing the first end wall, so that the piston 2 gradually moves away from the first end wall, the piston 2 leaves room to store the slurry, and compresses the elastic energy storage member 3 to store elastic potential energy.

When the pumping pressure is reduced or eliminated, the elastic energy storage element 3 gradually recovers to deform, and releases elastic potential energy to push the piston 2, so that the slurry is pushed along the axial direction of the piston cavity 11, the slurry is extruded, and the slurry is continuously, stably and at a large flow rate.

Because the pushing direction and the feeding direction of the piston 2 are different, the problem that the slurry is blocked at the discharge port II when the piston 2 pushes out the slurry to cause aggregate accumulation is avoided, so that the chain reaction of slurry segregation and continuous aggregate accumulation is avoided, the problems of internal blockage and slurry segregation of the conveying transition mechanism 200 are solved, and stable and continuous feeding is ensured.

As shown in fig. 3, to ensure the stability of the feeding transition mechanism 200, the feeding port I is closer to the first end wall than the piston 2, so that the feeding port I is beyond the stroke of the piston 2, the piston 2 is prevented from shielding the feeding port I, and smooth feeding is ensured.

In some embodiments, the end of the piston chamber 11 axially opposite the first end wall may be left unsealed to reduce the overall mass of the feed transition mechanism 200, and the elastic energy storage member 3 may be connected to the side wall 12.

In other embodiments, the piston chamber 11 is provided with a second end wall 14 at an end axially opposite the first end wall. As shown in fig. 3, the second end wall 14 is located on the other side of the piston 2, and the elastic energy storage member 3 abuts against the second end wall 14.

Further, the elastic energy storage member 3 is configured to be supported between the second end wall 14 and the piston 2. In other words, the elastic energy storage element 3 is arranged between the second end wall 14 and the piston 2 in a pre-compressed state, so that the pressure is generated on the elastic energy storage element 3 during the movement of the piston 2, and the discharging stability is further ensured.

As shown in fig. 2 and 3, the discharge port II is disposed on the first end wall, so that the discharge direction of the discharge port II is the same as the pushing direction of the piston 2, thereby avoiding the thrust loss of the piston 2, ensuring that the thrust of the piston 2 is converted into discharge power as much as possible, thereby improving the discharge power and alleviating the problems of blockage and segregation of the discharge port II.

Further, the caliber of the discharge port II is not smaller than the inner diameter of the piston cavity 11. In other words, the discharge port II completely covers one end of the piston cavity 11, which can be understood that the piston cavity 11 does not have the first end wall, so that the slurry can directly enter the discharge port II, and the slurry is not extruded to cause segregation phenomenon before entering the discharge port II, thereby avoiding the mortar from accumulating at the discharge port II, and further solving the problems of blockage and segregation.

On the other hand, compared with the prior art, under the condition that the caliber of the discharge port II is unchanged, the diameter of the piston cavity 11 can be set smaller, so that the whole volume and the mass of the material conveying transition mechanism 200 can be reduced.

Further, as shown in fig. 2 and 3, the feeding transition mechanism 200 further includes a discharge pipe 6, the discharge pipe 6 includes a first end 61 and a second end 62, the first end 61 is connected to the discharge port II, and the inner diameter of the discharge pipe 6 gradually decreases from the first end 61 to the second end 62.

That is, the tapping pipe 6 has a conical shape, wherein the large end of the conical shape faces the piston chamber 11 and the small end of the conical shape is connected to the feed pipe 4000. The conical inner wall of the discharging pipe 6 has a guiding function, so that slurry flows more smoothly, and the slurry is less settled in the piston cavity 11 and is not easy to be dehydrated and hardened in the piston cavity.

According to the application, the feeding port I is arranged on the side wall 12, the discharging port II with the caliber larger than the inner diameter of the piston cavity 11 is arranged on the first end wall, and the conical discharging pipe 6 is arranged, so that not only can the blockage and segregation be relieved, the stable continuous discharging be realized, but also the whole volume and the mass of the feeding transition mechanism 200 are reduced, the slurry flow is facilitated, the thrust required by the slurry output can be reduced, and the required thrust is reduced by about 1/3 under the same slurry output through test.

Thus, further, the size of the elastic energy storage element 3 can be reduced by 1/3 compared with the prior art, for example, the pressure of the nitrogen spring can be reduced by 1/3, and the weight of the nitrogen spring is greatly reduced, so that the overall volume and the mass of the material conveying transition mechanism 200 are further reduced.

Optionally, as shown in fig. 3, the feed transition mechanism 200 further comprises a slide bar 4, the slide bar 4 comprising a first section 41 and a second section 42. Wherein the first section 41 is connected to the piston 2 and the second section 42 passes through the second end wall 14 and protrudes out of the body 1. When the piston 2 moves, the length of the sliding rod 4 extending out of the body 1 changes, so that the sliding rod 4 can identify the position of the piston 2 in the piston cavity 11, and whether the piston 2 works normally or not is convenient to confirm, and overhaul is convenient.

Optionally, the feeding transition mechanism 200 further includes a limiting member 5, where the limiting member 5 is connected to the second section 42 and located outside the body 1. During the movement of the piston 2, the limiting piece 5 follows the movement of the piston 2 through the sliding rod 4, and when the limiting piece 5 abuts against the outer surface of the body 1, the movement of the piston 2 towards the first end wall can be limited. Through the cooperation of slide bar 4 and locating part 5, can inject the stroke of piston 2, guarantee that pan feeding mouth I is outside the stroke of piston 2, realize avoiding piston 2 to shelter from pan feeding mouth I.

Optionally, the second section 42 is provided with external threads, the limiting member 5 is a nut, and the limiting member 5 is in threaded engagement with the second section 42. The rotation of the stop 5 enables the stop 5 to move along the second segment 42, thus acting to regulate the maximum stroke of the piston 2.

In the normal working state, the stroke of the piston 2 is reduced, and the piston 2 is prevented from passing through the feed port I.

Before stopping the operation, the stroke of the piston 2 is adjusted to a maximum so that the piston 2 can be moved to the first end wall to ensure that the slurry in the piston chamber 11 is pushed out entirely.

In some embodiments, as shown in fig. 2 and 3, the material conveying transition mechanism 200 further includes a one-way valve 7, where the one-way valve 7 is disposed at the material inlet I. When the piston 2 advances and extrudes the slurry, the one-way valve 7 closes the feed inlet I, further preventing the slurry from accumulating at the feed inlet I, and relieving the problems of slurry blockage and segregation.

As shown in fig. 4, 5 and 6, the check valve 7 includes a mounting seat 71, a baffle 72, a rotation pin 73, a pull rod 74 and a tension spring 75.

The mounting seat 71 is arranged at the feed inlet I and is connected with the body 1. The mounting seat 71 comprises a first surface 711 facing the interior of the piston chamber 11 and a second surface 712 facing away from the interior of the piston chamber 11, the mounting seat 71 is provided with a through hole 713 communicated with the feed inlet I, one end of the through hole 713 penetrates to the first surface 711, and the other end of the through hole 713 penetrates to the second surface 712.

The baffle 72 is connected to the mounting base 71 by a rotation pin 73, and when the baffle 72 covers the through hole 713, the feed inlet I is closed. In some embodiments, the baffle 72 may also be attached to the sidewall 12 to directly cover the inlet I. By providing the baffle 72 so as to cover the through hole 713, the reliability of the check valve 7 can be debugged and confirmed before the check valve 7 is installed.

The end of the pin 73 extends to the outer surface of the mount 71, and the outer surface of the mount 71 provides a surface connecting the first surface 711 and the second surface 712.

The pull rod 74 is fixedly connected with the end of the rotary pin 73, one end of the tension spring 75 is fixed relative to the mounting seat 71, and the other end of the tension spring 75 is connected with the pull rod 74 so as to drive the baffle 72 to close the feed inlet I.

Through the arrangement, the one-way valve 7 formed by the mounting seat 71, the baffle plate 72, the rotary pin 73, the pull rod 74 and the tension spring 75 is an integral module, the tension spring 75, the pull rod 74 and other structures are arranged outside the mounting seat 71, the rotary pin 73, the pull rod 74 and the tension spring 75 are not arranged in the through holes 713, slurry cannot be blocked, and blockage and segregation problems are not easy to cause. On the other hand, the rotation pin 73, the pull rod 74 and the tension spring 75 are not easily corroded by slurry, and stability of the check valve 7 is improved. On the other hand, it is also convenient to observe the pull rod 74 from the outside to judge whether the baffle 72 shields the inlet I, thereby facilitating the overhaul of the check valve 7.

Optionally, the check valve 7 further includes a connecting seat 76, the connecting seat 76 is connected to the mounting seat 71, the connecting seat 76 is provided with a plurality of connecting positions 761, the distances between the connecting positions 761 and the pull rod 74 are different, and one end of the tension spring 75 is selectively connected to the connecting positions 761. By providing the connection seat 76 with a plurality of connection positions 761, the tension of the tension spring 75 is adjusted to ensure the reliable operation of the check valve 7.

As shown in fig. 4, 5 and 6, the connection base 76 is U-shaped, the bottom of the U-shape is connected to the mounting base 71 by a fixing member, and the arm of the U-shape extends in a direction away from the mounting base 71 and is provided with a plurality of connection sites 761 arranged along the extending direction thereof.

Optionally, the connecting portion 761 is a clamping hole, and one end of the tension spring 75 is connected to the clamping hole.

Optionally, the one-way valve 7 further comprises a first connecting rod 762 and a second connecting rod 741. One end of the first connecting rod 762 is inserted into the clamping hole, a first hanging hole (not shown) is formed in the other end of the first connecting rod 762, and one end of the tension spring 75 is hung in the first hanging hole. One end of the second connecting rod 741 is connected to the pull rod 74, a second hanging hole (not shown) is provided at the other end of the second connecting rod 741, and the other end of the tension spring 75 is hung at the second hanging hole.

Optionally, the feed transition mechanism 200 further comprises a feed tube 8, the feed tube 8 being connected to the second surface 712 and communicating with the through hole 713. Therefore, the mounting seat 71 simultaneously plays a role of connecting the feeding pipe 8, thereby facilitating assembly.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A material conveying transition mechanism, comprising:

the body is provided with a piston cavity;

the piston is arranged in the piston cavity;

2. The feed transfer transition mechanism of claim 1, wherein the feed inlet is closer to the first end wall than the piston.

3. The feed transition mechanism of claim 1 or 2, wherein the piston chamber further comprises a second end wall disposed opposite the first end wall, the second end wall being on the other side of the piston;

the material conveying transition mechanism further comprises:

a sliding rod comprising a first section connected to the piston and a second section passing through the second end wall and extending out of the body;

and the limiting piece is connected with the second section and is abutted to the outer surface of the body so as to limit the piston to move towards the first end wall.

4. A feed transition mechanism as claimed in claim 3, wherein the second section is provided with external threads, the stop member is a nut, and the stop member is in threaded engagement with the second section.

5. A feed transition mechanism as claimed in claim 3, wherein the elastic energy storage member is configured to be supported between the second end wall and the piston.

6. The feed transfer transition mechanism of claim 1, wherein the discharge port is disposed in the first end wall.

7. The feed transfer mechanism of claim 6, wherein the bore of the discharge port is no less than the inner diameter of the piston chamber.

8. The feed transition mechanism of claim 6 or 7, further comprising a discharge tube, the discharge tube comprising a first end and a second end, the first end being connected to the discharge port, the inner diameter of the discharge tube gradually decreasing from the first end to the second end.

9. The feed transition mechanism of claim 1, further comprising a one-way valve disposed in the feed inlet.

10. The material conveying transition mechanism according to claim 9, wherein the one-way valve comprises a mounting seat, a baffle, a rotating pin, a pull rod and a tension spring, the mounting seat is arranged at the material inlet and is connected with the body, the baffle is connected with the mounting seat through the rotating pin and covers the material inlet, the end part of the rotating pin extends to the outer surface of the mounting seat, the pull rod is fixedly connected with the end part of the rotating pin, one end of the tension spring is fixed relative to the mounting seat, and the other end of the tension spring is connected with the pull rod so as to drive the baffle to seal the material inlet.

11. The material conveying transition mechanism of claim 10, wherein the one-way valve further comprises a connecting seat, the connecting seat is connected to the mounting seat, the connecting seat is provided with a plurality of connecting positions, the connecting positions are different from the pull rod in distance, and one end of the tension spring is alternatively connected to the connecting positions.

12. The feed transfer transition mechanism of claim 10 or 11, wherein the mounting seat comprises a first surface facing the interior of the piston cavity, the mounting seat is provided with a through hole communicated with the feed inlet, one end of the through hole penetrates to the first surface, and the baffle covers the through hole.

13. The feed transition mechanism of claim 12, wherein the mount further comprises a second surface facing away from the interior of the piston chamber, the other end of the through bore extending through to the second surface, the feed transition mechanism further comprising:

and the feeding pipe is connected to the second surface and communicated with the through hole.

14. A pumping device, characterized by comprising a power pump and the material conveying transition mechanism according to any one of claims 1-13, wherein the output end of the power pump is connected with the material inlet of the material conveying transition mechanism.

15. A spray coating device, comprising:

the storage device is used for storing the slurry;

the spraying device is used for spraying the slurry;

the pumping device of claim 14, wherein the storage device and the spraying device are connected to output slurry stored by the storage device to the spraying device.