CN219078492U

CN219078492U - Small-volume bin pump structure for positive pressure pneumatic conveying system and material conveying system

Info

Publication number: CN219078492U
Application number: CN202222769944.8U
Authority: CN
Inventors: 陈曦; 章靖; 鞠富利
Original assignee: Beijing Zhongdian Botian Technology Co ltd
Current assignee: Beijing Zhongdian Botian Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-05-26
Anticipated expiration: 2032-10-20

Abstract

The utility model provides a small-volume bin pump structure for a positive pressure pneumatic conveying system and a material conveying system, wherein the small-volume bin pump structure comprises: the feeding port of the pump body is used for being connected with a hopper of the material conveying system, and the discharging port of the pump body is used for being connected with the material conveying pipe; the dome valve is positioned at the feed inlet of the pump body and between the feed inlet of the pump body and the hopper, and the cavity wall of the dome valve is provided with an exhaust port which is communicated with the outside of the pump body and the inner cavity of the dome valve. The small-volume bin pump structure can improve the blanking speed of the small-volume bin pump, and further improve the conveying capacity of the system.

Description

Small-volume bin pump structure for positive pressure pneumatic conveying system and material conveying system

Technical Field

The utility model relates to the technical field of material conveying, in particular to a small-volume bin pump structure for a positive pressure pneumatic conveying system and the material conveying system.

Background

The positive pressure pneumatic conveying system is widely applied to conveying materials such as fly ash, cement, metallurgical mineral powder and the like in a power plant, and can flexibly arrange pipelines according to terrain conditions to realize conveying under various conditions such as concentration, dispersion, long distance and the like. The conveying process is less influenced by external conditions, the system is controlled in a program control manner through a PLC or a DCS, the automatic operation of equipment can be realized, the system operation is stable, and the equipment is reliable; in the conveying process, the powder material can be conveyed without leakage, and the powder material conveying device is ideal.

The bin pump is an important device for conveying materials in a positive pressure pneumatic conveying system, and a bottom discharging conveying mode is adopted. The cabin pump conveying is a discontinuous conveying process; one process flow of the system comprises: the feeding valve is opened, the material falls into the bin pump, the feeding valve is closed, the bin pump is used for air inflow and fluidization, the system starts to convey, the material of the bin pump is conveyed to a designated target place through a pipeline, after the pressure in the pipeline is reduced to a designated value, the system conveying is stopped, the feeding valve is opened again, and a new conveying period starts.

In order to achieve good material filling effect, a large-sized bin pump (the bin pump with the volume of more than 0.5 cubic meters) with large volume is adopted by the existing positive pressure pneumatic conveying system, and a feeding valve and an exhaust valve are generally arranged on a pump body of the large-sized bin pump so as to enable materials to be filled into the bin pump rapidly and without obstruction. However, for small-volume bin pumps (bin pumps with the volume not more than 0.5 cubic meter), the structure of the small-volume bin pump cannot be provided with an exhaust valve on the pump body; this makes it possible for a material conveying system employing a small-volume silo pump to achieve only a sacrifice (or extension) of blanking time for the falling of material during the conveying process; in addition, because the exhaust in the small-volume bin pump is not smooth, in the material conveying process, the situation that the material falls to the small-volume bin pump is difficult to ensure, and therefore the material conveying capacity is not high.

Therefore, for a material conveying system adopting a small-volume bin pump, how to improve the blanking speed and the conveying capacity of the system of the small-volume bin pump in the working process is a technical problem to be solved.

Disclosure of Invention

In view of the above, the present utility model provides a small-capacity bin pump structure for a positive pressure pneumatic conveying system and a material conveying system, so as to solve one or more technical problems in the prior art.

According to one aspect of the present utility model, there is disclosed a small-capacity silo pump structure for a positive pressure pneumatic conveying system, the small-capacity silo pump structure comprising:

the feeding port of the pump body is used for being connected with a hopper of the material conveying system, and the discharging port of the pump body is used for being connected with a material conveying pipe;

the dome valve is positioned at the feed inlet of the pump body and between the feed inlet of the pump body and the hopper, and the cavity wall of the dome valve is provided with an exhaust port which is communicated with the outside of the pump body and the inner cavity of the dome valve.

In some embodiments of the utility model, the exhaust port is located on a side wall of the dome valve on the spool side.

In some embodiments of the present utility model, the outer side wall of the dome valve is provided with a protruding portion, the protruding portion is provided with a working plane obliquely arranged with the dome valve axis, and the exhaust port extends from the working plane to the inner cavity of the dome valve in an inclined manner.

In some embodiments of the utility model, the number of the protrusions is a plurality.

In some embodiments of the present utility model, when the number of the protrusions is an even number, the protrusions are symmetrically disposed with respect to the axis of the dome valve, and one of the protrusions is provided with a vent.

In some embodiments of the utility model, the small volume cartridge pump structure further comprises an exhaust conduit in communication with the exhaust port; and/or

The pump body is a T-shaped pump or an L-shaped pump.

In some embodiments of the utility model, the small volume cartridge pump structure further comprises a vent valve disposed on the vent conduit.

In another aspect of the utility model, a material delivery system is also disclosed that includes a small volume silo pump structure for a positive pressure pneumatic delivery system as described in any of the embodiments above.

In some embodiments of the utility model, the material is a powder material and the hopper is a storage hopper for the powder material.

In some embodiments of the utility model, the number of the small-volume bin pump structures is multiple, and the discharge holes of the pump bodies of the small-volume bin pump structures of each group are connected with the material conveying pipe.

By utilizing the small-volume bin pump structure for the positive pressure pneumatic conveying system and the material conveying system, the beneficial effects can be obtained at least in that:

this a little volume storehouse pump structure for malleation air conveying system is through seting up the gas vent on the dome valve of pump body feed inlet department, and the gas vent intercommunication the outside of pump body with the inner chamber of dome valve to can be with the gas discharge in the pump body through this gas vent, thereby alleviate the problem that little volume storehouse pump blanking effect is poor and blanking time is long in the material transportation process, thereby improved the speed of little volume storehouse pump blanking under the prerequisite that does not influence little volume storehouse pump use volume, and then also improved the system conveying ability.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present utility model are not limited to the above-described specific ones, and that the above and other objects that can be achieved with the present utility model will be more clearly understood from the following detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate and together with the description serve to explain the utility model. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model. Corresponding parts in the drawings may be exaggerated, i.e. made larger relative to other parts in an exemplary device actually manufactured according to the present utility model, for convenience in showing and describing some parts of the present utility model. In the drawings:

fig. 1 is a front view of a small-capacity silo pump structure for a positive pressure pneumatic conveying system according to an embodiment of the utility model.

Fig. 2 is a top view of a small-volume silo pump structure for a positive pressure pneumatic conveying system in accordance with one embodiment of the utility model.

FIG. 3 is a half cross-sectional view of a dome valve in accordance with one embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a material conveying system according to an embodiment of the utility model.

Fig. 5 is a first structural diagram of an L-shaped pump according to an embodiment of the present utility model.

Fig. 6 is a second structural diagram of an L-shaped pump according to an embodiment of the present utility model.

Reference numerals:

valve core 250 of exhaust valve 240 of exhaust pipe 230 of exhaust port 220 of exhaust port 210 of dome valve 200 of pump body 100

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model.

It should be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details not greatly related to the present utility model are omitted.

It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

Here, it should be further noted that, in the present specification, the term of orientation appears in relation to the direction of position shown in the drawings; the term "coupled", unless expressly stated otherwise, may refer not only to a direct connection, but also to an indirect connection in the presence of an intermediate. The direct connection is that the two parts are connected without intermediate parts, and the indirect connection is that the two parts are connected with other parts.

For the existing material conveying system adopting the large-sized bin pump (or the large-volume bin pump), due to the structural characteristics of the large-sized bin pump, a feeding valve and an exhaust valve can be directly arranged on a pump body of the large-sized bin pump, so that materials can fall into the large-sized bin pump with the feeding valve and the exhaust valve quickly and uninhibitedly through exhaust of the exhaust valve in the material conveying process. For the small-volume bin pump, the shape of the small-volume bin pump is not suitable for arranging an exhaust valve on the pump body, so that for a material conveying system adopting the small-volume bin pump, the material filling effect of the small-volume bin pump can be improved only by prolonging the blanking time, and the material filling effect of the bin pump is difficult to ensure in the material conveying process due to unsmooth exhaust in the small-volume bin pump. In practice, for the material conveying system adopting the small-volume bin pump, the blanking time needs to be prolonged to improve the blanking effect of the small-volume bin pump, so that the number of times of conveying the conveying system in unit time is reduced, the conveying capacity of the system is reduced, and the conveying efficiency of the system is reduced; the gas consumption of the system is increased, so that the energy consumption is increased, and the cost of the equipment system is increased; in addition to the above, increased wear of system piping and equipment may be incurred, resulting in increased equipment maintenance costs. Therefore, the application provides a small-capacity bin pump structure for a positive pressure pneumatic conveying system and a material conveying system, so that the blanking speed of the small-capacity bin pump is improved, and the conveying capacity of the system is further improved. Herein, a large-sized (or large-volume) pump refers specifically to a pump having a volume of greater than 0.5 cubic meters, while a small-sized (or small-volume) pump refers specifically to a pump having a volume of no greater than 0.5 cubic meters.

Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. In the drawings, like reference numerals refer to the same or similar parts.

Fig. 1 is a front view of a small-capacity bin pump structure for a positive pressure pneumatic conveying system according to an embodiment of the present utility model, and as shown in fig. 1, the small-capacity bin pump structure at least includes a pump body 100 and a dome valve 200, the pump body 100 may be vertically arranged, a feed inlet of the pump body 100 is used for being connected with a hopper of a material conveying system, and a discharge outlet of the pump body 100 is used for being connected with a material conveying pipe. When the pump body 100 is vertically arranged, the dome valve 200 is specifically located at the top of the pump body 100, the dome valve 200 is further arranged at the feed inlet of the pump body 100, the dome valve 200 is located between the feed inlet of the pump body 100 and the hopper, the cavity wall of the dome valve 200 is provided with an air outlet 210, and the air outlet 210 is communicated with the outside of the pump body 100 and the inner cavity of the dome valve 200.

The valve core of the dome valve 200 is a spherical dome, and a gap of about 2mm is kept between the valve core and the rubber sealing ring in the opening and closing process of the dome valve 200, so that the valve core and the rubber sealing ring can move in a non-contact mode, the aim is that friction is not generated between the valve core and the rubber sealing ring, abrasion is reduced, a pneumatic actuating element of the dome valve 200 is a full-sealed linear or fan-shaped cylinder, the dome valve 200 is directly driven to rotate, and phenomena of abrasion, leakage and the like caused by dust entering the pneumatic actuating element are effectively prevented. When the dome valve 200 is in the closed state, the rubber seal is inflated and expanded to tightly press against the spherical dome valve 200, thereby forming a very reliable sealing ring belt, and preventing the flow of materials in the pipeline.

Referring to fig. 3, the exhaust port 210 is located on a side wall of the valve core 250 of the dome valve 200, where the exhaust port 210 extends from the inner cavity of the dome valve 200 to the outside of the dome valve 200, and it is understood that since the dome valve 200 is located at the air inlet of the pump body 100 and the material in the hopper falls into the pump body 100 through the dome valve 200, the exhaust port 210 extends from the inner cavity of the dome valve 200 to the outside of the dome valve 200, which also represents that the exhaust port 210 extends from the inner cavity of the dome valve 200 to the outside of the pump body 100; therefore, in the material conveying process, the gas in the pump body 100 can be smoothly discharged out of the pump body 100, so that the material in the hopper can be ensured to smoothly and rapidly fall into the pump body 100, the filling effect of the material is improved, the single blanking time of the material is shortened, and the conveying efficiency of the system is further improved. In addition, it should be noted that, in the normal use state, the exhaust port on the valve core 250 side should not be closed by the valve core 250 to ensure that the exhaust port is smoothly exhausted. To further ensure that the valve element of the dome valve does not affect the exhaust effect of the exhaust port after opening, the exhaust port may be disposed on the opposite side of the dome valve 200 from the valve element 250, for example, when the valve element is in the open state.

In the above embodiment, the materials to be conveyed by the small-capacity bin pump structure are powder materials, and the corresponding hoppers are powder material storage hoppers. In addition, the small volume pump body may be a T-type pump or an L-type pump by way of example; the T-pump is also referred to as a barrel pump, and the L-pump is shown in block diagram form in fig. 5 and 6.

In an embodiment, the material conveying system is an ash conveying system, at this time, the hopper is an ash hopper, and the dome valve 200 is provided with the exhaust port 210, so that ash in the ash hopper can be smoothly and rapidly filled in the pump body 100 in the ash conveying process, thereby shortening the single ash falling time in the ash conveying process and further improving the conveying efficiency of the ash conveying system.

Further, a protrusion 220 is provided on the outer sidewall of the dome valve 200, the protrusion 220 has a working plane inclined with the axis of the dome valve 200, and the exhaust port 210 extends from the working plane to the inner cavity of the dome valve 200. Referring to fig. 3, the boss 220 and the dome valve 200 are integrally formed, and the boss 220 extends obliquely upward from a partial portion of the outer side wall of the dome valve 200, and at this time, the boss 220, which is also referred to as a cylindrical structure, is disposed through the outer side wall of the dome valve 200, and the boss 220 of the cylindrical structure and the outer side wall of the dome valve 200 are inclined with each other. It should be appreciated that the protrusion 220 is provided on the outer sidewall of the dome valve 200 to facilitate the opening of the exhaust port 210, and in other embodiments, the protrusion 220 may not be provided on the outer sidewall of the dome valve 200, i.e., the exhaust port may be directly formed on the sidewall of the dome valve.

In some embodiments of the present utility model, the number of bosses 220 on the outer sidewall of dome valve 200 is multiple. When the number of the protruding portions 220 is even, a plurality of the protruding portions 220 are symmetrically disposed with respect to the axis of the dome valve 200, and one of the protruding portions 220 is provided with the exhaust port 210. Fig. 3 is a half cross-sectional view of a dome valve 200 according to an embodiment of the present utility model, as shown in fig. 3, left and right sides of an axis of the dome valve 200 are provided with protrusions 220 extending upward from an outer sidewall in an inclined manner, and two protrusions 220 located at both sides of the axis are symmetrical to each other. In addition, when the number of the protrusions 220 is an odd number, the odd number of protrusions 220 may be spaced and uniformly disposed along the circumferential direction of the outer sidewall of the dome valve 200.

Fig. 2 is a top view of a small-capacity pump structure for a positive pressure pneumatic conveying system according to an embodiment of the present utility model, in which the number of protrusions 220 is two, and the two protrusions 220 are bilaterally symmetrical with respect to the axis of the dome valve 200, as shown in fig. 2. In this embodiment, the two protrusions 220 are provided with the exhaust ports 210, and in addition, one of the protrusions 220 may be provided with the exhaust ports 210, such as one or more of the exhaust ports 210 provided on only the right protrusion 220 or only the left protrusion 220. It will be appreciated that the provision of a plurality of exhaust ports 210 in the dome valve 200 may further enhance the rate of exhaust of the gas within the pump body 100.

Further, the small-volume pump structure further includes an exhaust pipe 230, the exhaust pipe 230 is communicated with the exhaust port 210, at this time, the exhaust pipe 230 is located outside the dome valve 200, the input end of the exhaust pipe 230 is communicated with the exhaust port 210 on the dome valve 200, where the dimensions of the exhaust pipe 230 and the exhaust port 210 may not be limited specifically, and may be set according to practical application scenarios.

To facilitate opening or closing of the vent conduit 230, the small volume cartridge pump structure further comprises a vent valve 240, the vent valve 240 being disposed on the vent conduit 230. When the discharge valve 240 is opened and the discharge pipe 230 is turned on at this time while the material transporting system is in an operating state, the gas in the pump body 100 is discharged from the discharge port 210 of the dome valve 200, the discharge valve 240, and the discharge pipe 230 in this order while the material in the hopper is transported to the pump body 100. When the material conveying system is in a stopped working state, the exhaust valve 240 is in a closed state.

According to another aspect of the utility model, a material conveying system is also disclosed, comprising a small volume silo pump structure for a positive pressure pneumatic conveying system as described in any of the embodiments above.

Further, in a material conveying system, the number of the small-capacity bin pump structures can be multiple, and the discharge ports of the pump bodies 100 of the small-capacity bin pump structures of each group are connected with the material conveying pipe. Fig. 4 is a schematic structural diagram of a material conveying system according to an embodiment of the present utility model, as shown in fig. 4, in the material conveying system, the number of small-volume bin pump structures is four, and each group of small-volume bin pump structures has an exhaust function.

According to the small-volume bin pump structure and the material conveying system for the positive-pressure pneumatic conveying system, disclosed by the embodiment of the utility model, the exhaust structure is arranged for the small-volume bin pump, so that the blanking effect of the small-volume bin pump is improved, the single blanking time is saved, the service efficiency of the small-volume bin pump is improved, the conveying efficiency and the conveying capacity of the material conveying system are improved, the energy consumption of the system is reduced, the equipment use abrasion is reduced, and the service lives of bin pump equipment, matched valves and pipelines are prolonged. In addition, the exhaust structure of this application sets up on the dome valve at the pump body top for exhaust effect is good, can not cause the influence to the effective volume of little volume storehouse pump.

In this disclosure, features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

While the foregoing has shown and described the basic underlying principles and features of the utility model, it is to be understood that the utility model is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the utility model as defined in the appended claims.

Claims

1. A small-capacity silo pump structure for a positive pressure pneumatic conveying system, characterized in that the small-capacity silo pump structure comprises:

2. The small-capacity silo pump structure for a positive-pressure pneumatic conveying system according to claim 1, wherein the exhaust port is located on a side wall on the spool side of the dome valve.

3. The small-capacity silo pump structure for a positive-pressure pneumatic conveying system according to claim 2, wherein a boss is provided on the outer side wall of the dome valve, a working plane inclined to the dome valve axis is provided on the boss, and the exhaust port extends obliquely from the working plane to the inner cavity of the dome valve.

4. A small-volume silo pump structure for a positive pressure pneumatic conveying system according to claim 3 wherein the number of bosses is plural.

5. The small-capacity silo pump structure for a positive pressure pneumatic conveying system according to claim 4, wherein when the number of the bosses is an even number, a plurality of the bosses are symmetrically arranged with respect to the axis of the dome valve, and one of the bosses is provided with an exhaust port.

6. A small-volume silo pump structure for a positive pressure pneumatic conveying system according to any of claims 1 to 5, wherein,

the small-volume bin pump structure further comprises an exhaust pipeline, and the exhaust pipeline is communicated with the exhaust port; and/or

The pump body is a T-shaped pump or an L-shaped pump.

7. The small-volume silo pump structure for a positive-pressure pneumatic conveying system of claim 6, further comprising an exhaust valve disposed on the exhaust conduit.

8. A material conveying system, characterized in that it comprises a small-volume silo pump structure for a positive-pressure pneumatic conveying system according to any one of claims 1 to 7.

9. The material handling system of claim 8, wherein the material is a powder material and the hopper is a powder material storage hopper.

10. The material conveying system according to claim 9, wherein the number of the small-capacity bin pump structures is multiple, and the discharge holes of the pump bodies of the small-capacity bin pump structures of each group are connected with the material conveying pipe.