CN210440173U - Pasty material conveying device and engineering vehicle - Google Patents

Abstract

The utility model relates to a paste material conveyor and engineering vehicle, paste material conveyor includes: two piston pumps (8); and a valve (9) comprising a housing provided with two inlets (9a) and outlets (9b) communicating with the two piston pumps (8), respectively, and a first plate-like member (11) for closing the inlet (9a) of the valve (9), the first plate-like member (11) being movable along a side wall of the housing to open and close the inlet (9a) of the valve (9) simplifying the structure and reducing the cost with respect to the paste material conveying device of the related art.

Description

Pasty material conveying device and engineering vehicle

Technical Field

The utility model relates to an engineering machine tool field particularly, relates to a pasty material conveyor and engineering vehicle.

Background

Fig. 1 is a schematic view showing a related-art paste material conveying apparatus. As shown in fig. 1, a related-art paste material conveying apparatus includes a hopper 1 and a piston pump 6 for conveying a material in the hopper 1 toward a conveying pipe 7. Optionally, the pasty material comprises concrete. The delivery pipe is used for delivering concrete to a construction site. Wherein the piston pump 6 comprises a cylinder and a piston 5 movably arranged in the cylinder.

The paste material conveying device further comprises a slide valve 3, and the slide valve 3 comprises a first circulation port communicated with the hopper 1, a second circulation port communicated with the conveying pipeline 7 and a third circulation port communicated with the piston pump 6. The first valve body 4 of the spool 3 opens and closes the second communication port first valve body 4. The paste mass transfer device further comprises a second valve body 8 for opening and closing the first through-flow opening.

The paste material conveying device includes two piston pumps 6 and two slide valves 3 provided in one-to-one correspondence with the piston pumps 6. The conveying pipeline 7 is Y-shaped, the conveying pipeline 7 is provided with two inlets, and the two inlets of the conveying pipeline are respectively communicated with the second circulation ports of the two slide valves 3. The first through-openings of the two slide valves 3 are respectively in communication with the hopper 1. The two third flow ports of the two slide valves 3 are respectively connected to the two piston pumps 6.

During the movement of the piston 5 of the piston pump 6 away from the slide valve 3, the first valve body 4 closes the second through-opening of the slide valve 3, the second valve body 8 opens the through-opening of the slide valve 3, and the piston pump 6 sucks in the concrete in the hopper 1. The stirring member 2 provided in the hopper 1 may push the concrete in the hopper 1 toward the first circulation port of the slide valve 3.

After the piston 5 has been moved in a direction away from the slide 3 to a limit position, the second through-flow opening can be opened and the first through-flow opening closed, whereupon the piston 5 is moved in a direction towards the slide 3, the piston 5 pushing the concrete in the piston pump 6 into the delivery pipe 7 for delivering the concrete towards the construction site.

The two piston pumps 6 alternately suck the concrete and alternately push it towards the conveying pipe 7, so that the conveying pipe 7 can continuously convey the concrete to the construction site.

The related art paste material conveying apparatus has the following disadvantages:

1. the paste material transfer device of the related art requires two slide valves 3, each slide valve 3 is provided with a driving part for driving the first valve body 4 of the slide valve 3 to move, a transmission part and a control part for controlling the movement of the driving part, and each slide valve 3 is provided with a corresponding sealing part. Therefore, the paste material conveying device in the related art is complex in structure and high in cost.

2. Because the structure of two slide valves 3 is adopted, each slide valve 3 is provided with a second flow port, the conveying pipe 7 is a Y-shaped tee pipe, and the structure of the conveying pipe 7 is complex and the cost is high.

3. The first valve body 4 of spool valve 3 and the casing fitting surface of spool valve are the curved surface and the cooperation area is big, and under the effect of concrete, the cooperation area is bigger can lead to these two components wearing and tearing faster more to lead to the life-span of these two components to shorter, the user later stage uses the change frequency higher, and the first valve body 4 of spool valve 3 and the manufacturing cost of the casing of spool valve are high, therefore the subsequent operating cost of user is high.

4. The first valve body 4 of the slide valve 3 with a complex structure is arranged inside the shell of the slide valve, so that the shell of the slide valve is large in volume and large in internal stress area, and therefore the pressure resistance of the shell of the slide valve is poor.

5. The inside of the shell of the slide valve 3 is mostly a curved surface and has a complex space, and in addition, the first valve body 4 of the slide valve with a complex structure is overlapped with the slide valve with a large area, concrete is easy to solidify in the corner of the shell of the slide valve, the cleaning work of the residual concrete inside is difficult, and in addition, two sets of slide valves 3 with complex structures need to be cleaned, so the daily maintenance operation of the paste material conveying device in the related art is relatively difficult.

6. The first valve body 4 and the shell of the slide valve 3 are spherical surface sealed, are complex compared with common plane sealing, require high matching precision, and the pretightening force of the two matched parts can only be provided by the spring, when the spring loses elastic force or the elastic force is reduced under the corrosion damage of concrete for a long time, the clearance appears in the curved surface matching between the first valve body 4 and the shell of the slide valve 3, concrete particles enter the matching clearance, and the service lives of the two parts are greatly reduced.

7. Since the first valve body 4 of the slide valve 3 is located inside the slide valve housing, the first valve body 4 will occupy the space that obstructs the opening of the first flow opening, and this configuration will therefore affect the suction efficiency of the pumping cylinder.

8. Since the body of the slide valve 3 is inside the housing of the slide valve, the concrete delivered by the piston pump 6 must pass through both the first body 4 of the slide valve 3 and the housing of the slide valve, the concrete passing through both elements consuming more energy than passing through only one element.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure's pasty material conveyor and engineering vehicle.

According to the utility model discloses an aspect of embodiment, the utility model provides a pasty material conveyor includes:

two piston pumps; and

and a valve including a housing provided with two inlets and outlets respectively communicating with the two piston pumps, and a first plate-like member for closing the inlet of the valve, the first plate-like member being movable along a side wall of the housing to open and close the inlet of the valve.

Alternatively, the two inlets of the valve are arranged side by side on the side wall, the first plate-like member being movable between two positions closing the two inlets of the output member, respectively.

Alternatively, both inlets of the valve may be partially closed by the first plate-like member at the same time.

Optionally, the plate like member is rotatably mounted within the housing.

Optionally, the first plate-like member comprises:

a plate-like member body having a groove formed on a surface thereof;

the plugging component is used for plugging the inlet of the valve, is arranged in the groove and can move along the depth direction of the groove; and

and a pressing portion for pressing the blocking member toward the inlet of the valve.

Optionally, the pushing part comprises:

an elastic member for urging the blocking member toward the inlet of the valve; or

And a hydraulic fluid passage communicating with the groove for supplying hydraulic fluid for pushing the plugging member to the groove.

Optionally, the pasty material conveying device further comprises:

a hopper comprising an outlet for outputting material;

a tee including a first port in communication with the outlet, a second port in communication with the inlet of the valve, and a third port in communication with the piston pump.

Optionally, the pasty material conveying device further comprises:

a second plate-like member connected to the hopper by a hinge member so that the second plate-like member moves along the side wall of the hopper to open and close the outlet of the hopper; and

and the limiting component is used for limiting the second plate-shaped component to move towards the direction far away from the side wall, and the limiting component and the hinged component are arranged at intervals along the circumferential direction of the outlet of the hopper.

Optionally, the spacing means comprises a hook-like member.

Optionally, the first communication port has an inner diameter greater than an inner diameter of the third communication port.

Alternatively,

the first circulation port and the third circulation port are coaxial; or

The second flow port is coaxial with the third flow port.

According to another aspect of the application, the engineering vehicle is further disclosed, and comprises the pasty material conveying device.

Use the technical scheme of this application, pasty material conveyor includes: two piston pumps; and a valve including a housing provided with two inlets and outlets respectively communicating with the two piston pumps, and a first plate-like member for closing the inlet of the valve, the first plate-like member being movable along a side wall of the housing to open and close the inlet of the valve, the structure being simplified and the cost being reduced with respect to the paste material conveying device of the related art.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view showing a related art pasty material conveying apparatus;

fig. 2 is a schematic structural view of a paste material conveying device according to a first embodiment of the present invention;

fig. 3 is a schematic top view of the paste material transfer device according to the first embodiment of the present invention;

fig. 4 is a schematic structural view showing a valve of the paste material conveying device according to the first embodiment of the present invention;

fig. 5 is a schematic side view showing a valve of the paste material transfer device according to the first embodiment of the present invention;

fig. 6 is a schematic rear view showing a valve of the paste material transfer device according to the first embodiment of the present invention;

fig. 7 is a schematic structural view showing the interior of a valve of the paste material conveying device according to the first embodiment of the present invention;

fig. 8 is a partial schematic structural view showing a valve of the paste material conveying device according to the first embodiment of the present invention;

fig. 9 is a partial schematic structural view of the paste material conveying device according to the first embodiment of the present invention;

fig. 10 is a schematic structural view showing a tee of the paste material conveying device according to the first embodiment of the present invention;

fig. 11 is a schematic top view showing a tee joint of the paste material conveying device according to the first embodiment of the present invention;

fig. 12 is a schematic diagram showing a first state of the paste material conveying device according to the first embodiment of the present invention;

fig. 13 is a schematic diagram showing a second state of the paste material conveying device according to the first embodiment of the present invention;

fig. 14 is a schematic diagram showing a third state of the paste material conveying device according to the first embodiment of the present invention;

fig. 15 is a schematic diagram showing a fourth state of the paste material conveying device according to the first embodiment of the present invention;

fig. 16 is a schematic structural view showing a paste material conveying device according to a second embodiment of the present invention;

fig. 17 is a schematic top view of a paste material transfer device according to a second embodiment of the present invention;

fig. 18 is a schematic structural view showing a tee of the paste material conveying device according to the second embodiment of the present invention;

fig. 19 is a schematic top view of a paste material transfer device according to a third embodiment of the present invention;

fig. 20 is a schematic structural view showing a tee of a paste material conveying apparatus according to a third embodiment of the present invention;

fig. 21 is a schematic structural view showing a valve of a paste material conveying device according to a fourth embodiment of the present invention;

fig. 22 is a schematic side view showing a valve of a paste material transfer device according to a fourth embodiment of the present invention;

fig. 23 is a schematic structural view showing a hopper of a paste material conveying device according to a fifth embodiment of the present invention and a second plate-like member for closing the hopper; and

fig. 24 is a schematic structural view of a hopper of a paste material conveying device according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Implement one

Fig. 2 is a schematic structural view of the paste material conveying device of the embodiment; fig. 2 is a schematic top view of the paste material conveying device according to the present embodiment.

As shown in fig. 2 and 3, the paste material feeding device of the present embodiment includes a hopper 1 for storing concrete and two piston pumps 8 communicating with both the hopper. The piston pump 8 includes a cylinder and a piston 7 movably provided in the cylinder.

During the movement of the piston 7 in the cylinder in the first direction, the piston pump 8 pumps the concrete of the hopper 1 into the cylinder of the piston pump 8. The piston 7 pushes the concrete outwards during the movement in the second direction in the cylinder. Wherein the first direction is opposite to the second direction.

The paste material conveying device further comprises a valve 9 communicated with the piston pump 8, and fig. 4 shows a structural schematic diagram of the valve 9 of the embodiment; fig. 5 shows a schematic side view of the valve 9 of the present embodiment; fig. 6 shows a rear view of the valve 9 of the present embodiment; fig. 7 shows a schematic structural view of the interior of the valve 9 of the present embodiment.

As shown in fig. 1 and 4 to 7, the valve 9 includes a housing provided with two inlet ports 9a, and the two inlet ports 9a are respectively communicated with the two piston pumps 8.

The housing of the valve 9 is also provided with an outlet 9b, the outlet 9b being adapted for connection to a delivery conduit 10. The delivery duct 10 extends from the outlet 9b of the valve 9 towards the construction site to deliver the concrete to the construction site.

The inlet 9a of the valve 9 is provided in a side wall of the housing, and the valve 9 further comprises a first plate-like member 11 provided inside the housing and movable along the side wall provided with the inlet 9 a. The first plate-like member 11 is for opening and closing the inlet 9a of the valve 9.

Alternatively, the side wall of the casing provided with the inlet 9a comprises a plane along which the first plate-like member 11 moves to open and close the inlet 9a of the valve 9.

The number of the inlets 9a of the valve 9 is two, and the two inlets 9a of the valve 9 are respectively used for communicating the two piston pumps 8. The two inlets 9a of the valve 9 are arranged side by side on the same side wall of the housing. The first plate-like member 11 is movable along the side wall provided with the inlet 9a to open and close the inlet 9a of the valve 9.

The first plate-like member 11 is movable between two positions closing the two inlet openings 9a, respectively. So that the two piston pumps 8 alternately push the concrete through the valve 9 towards the delivery duct 10.

Both inlets 9a of the valve 9 can be simultaneously partially closed by the first plate-like member 11, so that the paste material conveying apparatus has a state in which both piston pumps 8 simultaneously push the concrete toward the conveying pipe 10 through the valve 9. The piston pump 8 includes a first piston pump and a second piston pump. The inlet of the valve 9 comprises a first inlet communicating with the first piston pump and a second inlet communicating with the second piston pump.

The first plate-like member 11 opens the first inlet and closes the second inlet when the first piston pump pushes its inner concrete through the valve 9 towards the conveying pipe 10. When the first piston pump is to completely pile out the concrete inside it, the second piston pump starts to push the concrete inside it towards the second inlet of the valve 9 of the valve, the first plate-like member 11 is moved from a position closing the second inlet towards a position closing the first inlet, in the process the first plate-like member 11 has a position closing the first inlet and closing the second inlet, and the area of the first inlet closed is larger as the area of the second inlet open is larger.

Further, the valve 9 also comprises a maintenance opening 9c, and the maintenance opening 9c is a detection, cleaning and discharge opening and is used for internal inspection, cleaning and residual concrete removal of the daily mixed flow valve 4.

Optionally, the inner side of the housing of the valve 9 is provided with a wear resistant layer to improve the service life of the valve 9, and the increase of roughness after the inner side of the housing is worn can be avoided, so that the flow property of the material is affected.

In summary, during the transition from the first piston pump pushing concrete towards the delivery pipe 10 to the second piston pump pushing concrete towards the delivery pipe 10, concrete can be continuously input into the delivery pipe 10, which is beneficial to reducing the change of pushing pressure during the transfer of the two piston pumps 8 alternately delivering concrete into the delivery pipe 10.

In another alternative embodiment the first plate-like member 11 has a position in which the first inlet and the second inlet of the valve 9 are opened simultaneously. When the first piston pump is about to push out all the concrete inside it, the piston of the first piston pump is controlled to reduce the speed, and the piston of the second piston pump is controlled to start to push the concrete inside the second piston pump towards the second inlet of the valve 9. Alternatively, the sum of the moving speed of the piston of the first piston pump and the moving speed of the piston of the second piston pump is controlled to be equal to the speed before the piston of the first piston pump decelerates, so that the total amount of concrete input from the two inlets 9a of the valve 9 is constant during the alternation of the first piston pump and the second piston pump, thereby reducing the fluctuation of the delivery pressure in the delivery pipe 10.

In order to enable the two piston pumps 8 to push out the concrete at the same time, the pistons of the piston pumps in this embodiment move faster during the absorption of the material than during the pushing out of the material, so that one piston pump 8 sucks a predetermined amount of material before the other piston pump 8 pushes out the concrete completely.

In order to make the piston pump 8 complete the process of pumping the materials in a short time, the paste material conveying device further comprises a stirring component 2 arranged in the hopper, and the stirring component can push the materials in the hopper 1 to the piston pump 8 so as to improve the efficiency of pumping the materials by the piston pump 8.

Referring to fig. 5 to 7, the paste material conveying apparatus further includes a first driving portion 13 for pushing the first plate-like member 11 toward the side wall of the valve body 1 where the inlet 9a is provided. Alternatively, the first driving portion 13 comprises a first screw connected to the first plate-like member 11, and the side wall of the valve 9 provided with the inlet 9a is provided with a first hole allowing the first screw to pass therethrough. The first drive part 13 further comprises a first nut cooperating with the first screw thread row. The first nut and the first plate-like member 11 are located outside and inside the housing, respectively.

The first plate-like member 11 is rotatably attached to the side wall of the valve 9 to move between two positions at which the two inlets 9a of the valve 9 are respectively closed.

Optionally, the aforementioned screw comprises a hinging shaft for connecting the first plate-like member 11 with the side wall of the housing of the valve 9.

Fig. 8 shows a schematic structural view of the first plate-like member 11 and the housing of the valve 9 of the present embodiment. As shown in fig. 8, the first plate-like member 11 of the present embodiment includes a first plate-like member body 20 provided with a first groove, a first blocking member 22 for blocking the inlet 9a of the valve 9 movable in the thickness direction of the first plate-like member 11 in the first groove, and a first urging portion for urging the first blocking member 22 toward the inlet 9a of the valve 9.

In this embodiment, the first pushing part 21 includes an elastic member provided at the bottom of the groove.

In another alternative embodiment, the first urging portion includes a first hydraulic fluid chamber formed at the bottom of the first groove and a first hydraulic fluid passage communicating with the first hydraulic fluid chamber. The hydraulic fluid introduced by the first hydraulic fluid passage enters the bottom of the first groove to push the first blocking member 22 toward the outside of the first groove.

The first pushing part 13 brings the first plate-like member 11 into close contact with the side wall of the housing of the valve 9, effectively preventing concrete from entering between the first plate-like member 11 and the housing of the valve 9, thereby reducing the probability that the first plate-like member 11 and the housing of the valve 9 are worn by the concrete.

The first plate-like member 11 is further connected with a wiper 19, and the wiper 19 removes concrete from the housing of the valve 9, thereby preventing damage to the solidified concrete.

As shown in fig. 1 and 2, the paste material feeding device further includes a tee 5 for communicating the piston pump 8, the hopper 1 and the valve 9.

Fig. 10 shows a schematic diagram of the tee structure of the present embodiment. The three-way valve 5 comprises a first communication port 5a for communicating with the outlet of the hopper 1, a second communication port 5b for communicating with a respective inlet 9a of the valve 9 and a third communication port 5c for communicating with a respective piston pump 8.

The outlet of the hopper 1, the inlet 9a of the valve 9, the tee 5 and the piston pump 8 are arranged in one-to-one correspondence. The first through-flow opening 5a of the tee 5 communicates with a corresponding outlet of the hopper 1.

Fig. 11 shows a schematic view of two tees arranged side by side. As shown in fig. 11, the center-to-center distance between the first ports 5a of the two tees is larger than the center-to-center distance between the second ports 5b of the two tees.

Further, the inner diameter of the first through-hole 5a of the tee 5 is larger than the inner diameter of the third through-hole 5c of the tee 5, so that more material flows in the hopper 1 can enter the first through-hole 5a of the tee 5, and the material can flow from the first through-hole 5 of the tee 5 to the third through-hole 5.

The second circulation port 5b and the third circulation port 5c of the tee joint 5 are coaxially arranged, so that the material pushed out by the piston pump 8 is directly conveyed into the conveying pipeline 10, and the pressure loss in the material flowing process is reduced.

As shown in fig. 2, the paste material conveying apparatus further includes a second plate-like member 3 for opening and closing the outlet of the hopper 1.

When the first piston pump sucks the material from the hopper 1, the first outlet of the hopper 1 corresponding to the first piston pump is opened, and the first inlet of the valve 9 communicating with the first piston pump is closed by the first plate-like member 11; the second outlet of the hopper 1 corresponding to the second piston pump is closed and the second inlet of the valve 9 corresponding to the second piston pump is open. Thus, during the pumping of material from the hopper 1 by the first piston pump, the second piston pump conveys the material inside towards the second inlet of the valve 1.

In summary, when the piston pump 8 pumps material from the hopper 1, the outlet of the respective hopper 1 is opened and the inlet of the respective valve 9 is closed. When the piston pump 8 pushes the material inside towards the inlet 9a of the valve 9, the outlet of the corresponding hopper 1 is closed and the inlet of the corresponding valve 9 is opened.

The piston pump 8 described above is used for conveying the material in the hopper 1 to the conveying pipeline 10. Of course, the piston pump 8 can also convey the material in the conveying pipe 10 towards the hopper 1. When the piston pump 8 sucks the material from the conveying pipe 10, the inlet 9a of the valve 9 corresponding to the piston pump 8 is opened, the outlet of the hopper 1 corresponding to the piston pump 8 is closed, and the material in the conveying pipe 10 is sucked into the piston pump 8 through the inlet 9a of the valve 9. After the piston pump 8 finishes the work of pumping the materials, the corresponding inlet of the valve 9 is closed, the corresponding outlet of the hopper 1 is opened, the piston 7 of the piston pump 8 moves outwards, and the materials pushed out by the piston 7 enter the hopper 1 through the tee joint 5.

Optionally, the inboard of tee bend 5 is equipped with the wearing layer to improve the life of tee bend 5, also can avoid because of the inboard roughness increase after being worn and torn of tee bend 5, thereby make the flow property of material receive the influence.

Fig. 9 shows a schematic view of the structure of the second plate-like member 3 and the hopper 1 of the paste material conveying device of the present embodiment.

As shown in fig. 9, the paste material conveying apparatus further includes a second driving portion 4 for pushing the second plate-like member 3 toward the side wall of the hopper 1 provided with the outlet communicating with the piston pump 8.

The second driving portion 4 includes a second screw connected to the second plate-like member 3, and the hopper 1 is provided with a second hole for allowing the second screw to pass therethrough. The second drive part further comprises a second nut in threaded engagement with the second screw, the second nut and the second plate-like member 3 being located outside and inside the hopper 1, respectively. The second nut may be adapted to urge the second plate-like member 3 against the side wall of the hopper 1 during rotation of the screw.

As shown in fig. 9, the second plate-like member 3 includes a second plate-like member body 16 provided with a second concave groove 17, a second closing member 18 movable in the second concave groove 17 in the thickness direction of the second plate-like member 3 for closing the outlet of the hopper 1, and a second pressing portion for pressing the second closing member 18 toward the outlet of the hopper 1.

The second pushing portion includes a second hydraulic fluid chamber provided at the bottom of the second recess 17 and a second hydraulic fluid passage 15 communicating with the second hydraulic fluid chamber. The hydraulic fluid introduced through the second hydraulic fluid channel 15, after entering the second hydraulic fluid chamber, may push the second blocking member 28 towards the outside of the second recess 17, so that the second blocking member closes the outlet of the hopper 1.

The second plate-like member 3 is connected to the hopper 1 by a second hinged member to switch between a first position closing the outlet of the hopper 1 and a second position closing the outlet of the hopper 1.

The hinge member includes the second screw described above.

The paste mass transfer further comprises a limiting member 12 for limiting the movement of the second plate-like member 3 in a direction away from the side wall of the hopper 1. The stop member 12 is spaced from the second hinged member circumferentially of the outlet of the hopper 1.

Optionally, the spacing member 12 comprises a hook-like member.

Fig. 12 is a schematic diagram showing a process of pushing the material in the hopper 1 toward the conveying pipe 10 by the paste material conveying apparatus of the present embodiment.

Referring to fig. 12, the first plate-like member 11 and the second plate-like member 3 of the paste material pumping device of the present embodiment constitute a valve assembly together.

The valve assembly has a first state, i.e. a first valve position from the left as shown in fig. 12, in which the outlet of the hopper 1 corresponding to the first piston pump 8a is opened by the second plate-like member 3, the inlet 9a of the valve 9 corresponding to the first piston pump 8a is closed by the first plate-like member 11, and the piston of the first piston pump 8a moves towards the outside of the cylinder to pump the material in the hopper 1 into the cylinder of the first piston pump 8a through the three-way valve 5 communicating with the first piston pump 8 a. Since the second plate-like member 3 is attached to the sidewall of the hopper 1, the size of the stirring member 2 in the hopper 1 can be increased, so that the stirring member 2 can more effectively push the material in the hopper 1 toward the outlet of the hopper 1, thereby improving the efficiency of the first piston pump 8a in sucking the material.

Further, the efficiency of the first piston pump 8a for pumping the material can be improved by increasing the inner diameter of the first through-flow opening 5a, or decreasing the distance between the first through-flow opening 5a and the third through-flow opening 5c of the three-way valve 5, or decreasing the angle between the first through-flow opening 5a and the third through-flow opening 5c of the three-way valve 5. The piston pump has good pumping efficiency, and lays a good foundation for realizing constant flow conveying of concrete.

When the valve assembly is in the first state, the outlet of the hopper 1 corresponding to the second piston pump 8b is closed by the second plate-like member 3, the inlet 9a of the valve 9 corresponding to the second piston pump 8b is opened by the first plate-like member 11, and the second piston pump 8b conveys the material therein towards the conveying pipe 10 via the tee joint 5.

The valve assembly has a second state, i.e. a second valve position from the left as shown in fig. 12, after the first piston pump 8a completes the process of pumping the material, the outlet of the hopper 1 corresponding to the first piston pump 8a is closed by the second plate-like member 3, the inlet 9a of the valve 9 corresponding to the first piston pump 8a is closed by the first plate-like member 11, and the piston of the first piston pump 8a moves toward the inside of the cylinder to compact the material in the first piston pump 8a and the corresponding tee 5.

In this embodiment, the moving speed of the piston 7 during the process of pumping the material by the piston pump 8 is greater than the moving speed of the piston 7 during the process of pushing the material by the piston pump 8. Therefore, when one piston pump 8 finishes the process of pumping the material, the other piston pump 8 does not push out the material in the other piston pump 8 completely.

The valve assembly has a third condition, the third valve position from left as shown in figure 12, when the pressure of the piston of the first piston pump 8a compressing the material rises to the same pressure as the pressure of the inner material in the valve 9. The first plate-like member 11 is moved to a position such that both inlets of the valve 9 are partially open. At this time, the first piston pump 8a and the second piston pump 8b both push the material to the conveying pipe 10.

When the first piston pump 8a completes the operation of pre-pressurizing the material, the piston of the second piston pump 8b also moves to a position close to the end point, at this time, the moving speed of the piston of the second piston pump 8b is controlled to be reduced, and the piston of the first piston pump 8a is controlled to start moving towards the outer side of the cylinder body, so that the material in the first piston pump 8a is pushed towards the conveying pipeline 10. In the process, the sum of the moving speed of the piston of the first piston pump 8a and the moving speed of the piston of the second piston pump 8b is equal to the moving speed of the piston of the second piston pump 8b before deceleration, so that the flow rate of the material in the conveying pipe 10 is constant.

The valve assembly has a fourth state, i.e. a fourth valve position from the left as shown in fig. 12, in which the first piston pump 8a alone pushes the material towards the conveying pipe 10 after the material in the second piston pump 8b has been pushed out completely.

Four valve positions of the valve assembly from left to right are four states of a first piston 8a sucking material, a first piston pump 8a pre-pressing the material, a two piston pumps 8 alternating to output the material at the same time and a first piston pump 8a outputting the material independently.

The valve assembly in fig. 12 is in four states, from right to left, that the second piston 8b sucks the material, the piston of the second piston pump 8b preloads the material, and the second piston pump 8b outputs the material simultaneously when the two piston pumps 8 alternate and the second piston pump 8b outputs the material separately.

In this embodiment, the time for the piston of the piston pump 8 to push out all the material inside the piston pump 8 is equal to the sum of the time for the piston pump 8 to finish pumping the material, the time for the piston pump 8 to preload the material, and the time for the two piston pumps 8 to output the material simultaneously.

During the process of the piston pump 8 sucking the material from the hopper 1, the outlet of the hopper 1 corresponding to the piston pump 8 is opened, and the inlet 9a of the valve 9 corresponding to the piston pump 8 is closed.

During the preloading of the piston pump 8, the outlet of the hopper 1 corresponding to the piston pump 8 is closed, and the inlet 9a of the valve 9 corresponding to the piston pump 8 is also closed.

When the two piston pumps 8 alternate, both the outlets of the hopper 1 corresponding to the two piston pumps 8 are closed, and both the inlets 9a of the valve 9 corresponding to the two piston pumps 8 are open.

After the two piston pumps 8 complete the alternate work, one piston pump 8 alone pushes the material towards the conveying pipeline 10, the outlet of the hopper 1 corresponding to the piston pump 8 is still closed, and the inlet 9a of the valve 9 corresponding to the piston pump 8 is still opened; the other piston pump 8 starts the work of sucking the material, the outlet of the hopper 1 corresponding to the piston pump 8 is opened, and the inlet 9a of the valve 9 corresponding to the piston pump 8 is closed.

The pasty material conveying device of the present embodiment also has an operation mode for realizing the function of the existing conventional concrete pumping apparatus. In this case, the paste mass conveyor has only two operating states. Fig. 14 shows an operational principle diagram of the pasty material transfer device in this operational mode.

As shown in fig. 14, the paste material conveying apparatus has two operating states. In the first working state, the valve assembly is in the left position, the first piston pump 8a pumps the material from the hopper 1, the outlet of the hopper 21 corresponding to the first piston pump 8a is opened, the inlet of the valve 9 corresponding to the first piston pump 8a is closed, and the material in the hopper 1 is pumped into the cylinder of the first piston pump 8a through the tee joint 5. At the same time, the second piston pump 8b pushes the material into the conveying pipe 10, the outlet of the hopper 1 corresponding to the second piston cylinder 8b is closed, and the inlet of the valve 9 corresponding to the second piston pump 8b is opened.

After the first piston pump 8a finishes the work of pumping the materials or the second piston pump 8b pushes out all the materials in the first piston pump 8a, the valve assembly is switched to the second valve position, and the paste material conveying device is changed into the second working state. In the second operating state, the first piston pump 8a pushes material towards the conveying pipe and the second piston pump 8b sucks material from the hopper 1.

In the operation mode of the paste material transfer device shown in fig. 14, one of the two piston pumps 8 sucks the material from the hopper 1, the other piston pump 8 pushes the material in the other piston pump 8 into the transfer pipe 10, and after the piston pump 8 pushes all the material in the other piston pump 8 out, the other piston pump 8 starts sucking the material from the hopper 1, and the other piston pump 8 starts pushing the material into the transfer pipe. The speed of the piston pump 8 when pumping material is greater than or equal to the speed of the piston pump 8 when pushing out material.

Fig. 15 shows a schematic diagram of the material conveying device in an operating mode for conveying material in the conveying pipe 10 into the hopper 1.

As shown in fig. 15, in the operation mode in which the material conveying device conveys the material in the conveying pipe 10 into the hopper 1, the material conveying device has two operation states.

In a first working state, namely when the valve assembly is in the left position, the first piston pump 8a pushes the material in the hopper 1, an outlet of the hopper 1 communicated with the first piston pump 8a is opened, and an inlet 9a of the valve 9 communicated with the first piston pump 8a is closed; the second piston pump 8b sucks the material from the conveying pipe 10, the inlet of the valve 9 corresponding to the second piston pump 8b is open, and the outlet of the hopper 1 corresponding to the second piston pump 8b is closed.

The two piston pumps 8 alternately suck material from the conveying pipe 10 and alternately push the sucked material towards the inside of the hopper 1.

The speed of the piston pump 8 when pumping material is greater than or equal to the speed of the piston pump 8 when pushing out material.

The conveying device for the pasty materials has the following advantages:

1) the first circulation port 5a of the three-way pipe 5 is large in caliber, the stirring part 2 is large, the absorption efficiency of the piston pump 8 is high, and the three-way pipe is more suitable for pumping high-grade concrete or concrete with poor fluidity.

2) The first plate-like member 11 and the second plate-like member 3 do not participate in the change of direction of the concrete flow and do not cut the concrete flow, so the first plate-like member 11 and the second plate-like member 3 have less influence on the fluidity of the concrete, and have long service life and low later use cost for users.

3) The second flow port 5b and the third flow port 5c of the three-way pipe 5 are on the same axis, and the energy consumed by the concrete flowing through the three-way pipe is low, energy is saved, and the environment is protected.

4) The piston pump after simplification the utility model relates to a simple structure, simple process, with low costs, maintenance are simple.

Example two

Fig. 16 is a schematic structural view showing a paste material conveying device of the present embodiment; fig. 17 is a schematic top view showing a structure of a paste material conveying device of the embodiment; fig. 18 is a schematic structural view showing a tee joint of the paste material conveying device of the present embodiment.

As shown in fig. 16 to 18, the present embodiment is different from the first embodiment in that:

the tee joint 5 comprises a straight pipe section and a bent pipe section connected to the peripheral surface of the straight pipe section, a first circulation port 5a used for being communicated with the hopper 1 and a third circulation port 5c used for being communicated with the piston pump 8 are arranged at two ends of the straight pipe section respectively, and a third circulation port used for being communicated with the valve 9 is formed at one end, far away from the straight pipe section, of the bent pipe section.

EXAMPLE III

Fig. 19 is a schematic structural view showing a paste material conveying device of the present embodiment; fig. 20 is a schematic structural view showing a tee of the paste material conveying device of the present embodiment.

As shown in fig. 19 and 20, the present embodiment is different from the first embodiment in that: the tee 5 includes a first straight pipe section and a second straight pipe section connected to the peripheral surface of the first straight pipe section. Both ends of the first straight pipe section are respectively formed with a first communication port 5a for communicating with the hopper 1 and a third communication port 5c for communicating with the piston pump 8. The end of the second straight tube section remote from the first straight tube section forms a second through-flow opening 5b for communicating with the inlet of the valve 9.

Example four

Fig. 21 is a schematic view showing the structure of a valve of the paste material conveying device of the present embodiment. Fig. 22 is a schematic valve side view showing the paste material transfer device of the present embodiment.

As shown in fig. 21 and 22, the present embodiment differs from the first embodiment in that: the first plate-like members 11 are provided in one-to-one correspondence with the inlets 9a of the valves 9, and the first plate-like members 11 are used to open and close the inlets 9a of the respective valves 9.

EXAMPLE five

Fig. 23 shows a schematic view of the structure of the hopper of the present embodiment and the second plate-like member for closing the hopper.

The difference between this embodiment and the first embodiment is: the spacing between the stop member 12 and the side wall of the hopper 1 is adjustable to adjust the pressure of the second plate-like member 3 against the side wall of the hopper 1.

The paste material conveying device further includes a hydraulic cylinder 23 for pushing the stopper member 12 toward the side wall of the hopper 1. When the second plate-like member 3 opens the outlet of the hopper, the hydraulic cylinder applies a force to the second plate-like member. When the second plate-like member 3 closes the outlet of the hopper 1, the hydraulic cylinder applies a force to the second plate-like member 3 to bring it into abutment against the side wall of the hopper 1.

EXAMPLE six

Fig. 23 shows a schematic structural view at the hopper of the paste material conveying device of the embodiment. The difference between this embodiment and the first embodiment is: the paste material conveying apparatus further includes a sealing member 24 movably provided in the outlet of the hopper 1, and an elastic member 25 for urging the sealing member 24 toward the second plate-like member, which may be a spring, rubber, or the like.

The above description is only exemplary embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A pasty material conveying device, comprising:

two piston pumps (8); and

a valve (9) comprising a housing provided with two inlets (9a) and outlets (9b) communicating with the two piston pumps (8), respectively, and a first plate-like member (11) for closing the inlet (9a) of the valve (9), the first plate-like member (11) being movable along a side wall of the housing to open and close the inlet (9a) of the valve (9).

2. The pasty-material conveying device according to claim 1, characterized in that the two inlets (9a) of the valve (9) are arranged side by side on the side wall, the first plate-like member (11) being movable between two positions respectively closing the two inlets (9a) of the valve (9).

3. The pasty-material conveying device according to claim 2, characterized in that the two inlet openings (9a) of the valve (9) can be closed at the same time partially by the first plate-like member (11).

4. The pasty-material conveying device according to claim 2, characterized in that the plate-like member (11) is rotatably mounted in the housing.

5. The pasty-material conveying device according to claim 1, characterized in that the first plate-like member (11) comprises:

a plate-like member body (20) having a groove on the surface thereof;

a blocking member (22) for blocking an inlet (9a) of the valve (9), provided in the groove and movable in a depth direction of the groove; and

a pressing section (21) for pressing the blocking member (22) toward the inlet (9a) of the valve (9).

6. The pasty material conveying device according to claim 5, characterized in that the pushing portion (21) includes:

an elastic member for urging the blocking member (22) toward an inlet (9a) of the valve (9); or

A hydraulic fluid passage communicating with the recess for delivering hydraulic fluid to the recess for urging the blocking member (22).

7. The pasty material conveying device according to claim 1, characterized by further comprising:

a hopper (1) comprising an outlet for outputting material;

a tee (5) comprising a first communication port (5a) communicating with the outlet, a second communication port (5b) communicating with the inlet of the valve (9) and a third communication port (5c) communicating with the piston pump (8).

8. The pasty material conveying device according to claim 7, characterized by further comprising:

a second plate-like member (3) connected to the hopper (1) by a hinge member so that the second plate-like member (3) moves along the side wall of the hopper (1) to open and close the outlet of the hopper (1); and

and the limiting component (12) is used for limiting the second plate-shaped component (3) to move towards the direction far away from the side wall, and the limiting component (12) and the hinged component are arranged at intervals along the circumferential direction of the outlet of the hopper (1).

9. The pasty-material conveying device according to claim 8, characterized in that the limiting member (12) comprises a hook-like member.

10. The pasty mass transfer device according to claim 7, characterized in that the first through-flow opening (5a) has an inner diameter greater than an inner diameter of the third through-flow opening (5 c).

11. The pasty material conveying device according to claim 7,

the first through-flow opening (5a) is coaxial with the third through-flow opening (5 c); or

The second communication port (5b) is coaxial with the third communication port (5 c).

12. A working vehicle, characterized by comprising the pasty material conveying device according to any one of claims 1 to 11.

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