Double-upward-drawing high-output continuous delivery pump

Abstract

The utility model provides a double-upward-drawing large-output continuous delivery pump which comprises a stock bin, a charging pump, a delivery pump, a terminal warehouse, a delivery air source and an instrument air source. The stock bin is connected with the conveying pump through the charging pump, and the charging pump is provided with an exhaust pipeline and communicated with the conveying pump through an upward guiding pipeline. The conveying pump is connected to the terminal library through a conveying pipeline; the conveying air source provides power for the charging pump and the conveying pump through air pipes, and the instrument air source monitors the material levels of the charging pump and the conveying pump; a hydrophobic separator is mounted at the starting point of the air source conveying pipeline and aims at reducing the water content of the air source conveying pipeline and improving the air dryness; an air supply device is additionally arranged at the descending stage of the conveying pipeline, so that the material descending speed can be reduced, the pipe blockage problem is effectively prevented, the pipeline layout is more flexible, and the device is particularly suitable for complex geographical environments; meanwhile, the overall elevation of the conveying pipeline is also reduced by using the air supply device, and the construction cost is reduced; according to the utility model, the stability and applicability of the conveying system are improved by additionally arranging the hydrophobic separator and the air supply device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of delivery pump especially relates to a double upper lead big output continuous delivery pump. BACKGROUND

[0002] The conventional continuous delivery pump as a low-pressure dilute phase pneumatic conveying equipment has been widely applied in the fields of thermal power plants, cement plants, alumina plants and the like, and is used for horizontally or vertically conveying the powdery materials such as fly ash, cement powder, alumina powder and limestone powder with the conveying distance within 500 m. The core working principle thereof is to utilize the low-pressure air provided by an air source fan to gasify the materials through a mixing chamber and to suck the materials into a conveying pipe, and then to lift the materials to a discharge pipe by a high-speed air flow, so as to realize the continuous conveying of the materials. The continuous delivery pump has the advantages of simple structure, few wearing parts, small equipment investment, low air consumption, small motor power and good sealing performance. However, in the actual application, the continuous delivery pump still faces some technical challenges.

[0003] According to the search, one Chinese utility model patent with the patent No. CN202609591U provides a parallelly placed double upper lead big output continuous delivery pump, which comprises a stock bin, a charging pump, a delivery pump, a terminal warehouse, a delivery air source and an instrument air source. The charging pump is connected to the delivery pump through an upper lead pipe in an upper lead mode, and a delivery pump feeding valve is installed on the upper lead pipe. A gasification air valve is installed on the lower bottom of the charging pump and connected to the delivery air source. The delivery pump is connected to the terminal warehouse through a delivery pipe in an upper lead mode, and a gasification air valve is installed on the lower bottom of the delivery pump and connected to the delivery air source. The delivery pump is connected to the charging pump in a parallel mode. The technical scheme has the advantages that the conveying distance is long, and the single-stage conveying distance can reach 1500 m. The conveying output is large, and the output of the equipment is 2 times the output of the conveying equipment on the market under the same conveying pump volume. The conveying pipe diameter is small, and the pipe diameter is 1 / 3 smaller than the existing pipe diameter under the same output requirement.

[0004] In combination with the above prior art, the inventor finds that the stability of the medium is crucial in some special processes. Although the continuous delivery pump can realize the continuous conveying of the materials, it is difficult to completely eliminate the influence caused by the water content in the conveying air and the installation environment. Such influence can cause frequent pipe blockage and even cause the entire conveying system to be paralyzed. UTILITY MODEL CONTENTS

[0005] In order to solve the problem of the field pipe blockage caused by the water content in the conveying air and the installation environment which cannot be completely eliminated by the continuous delivery pump in the prior art, the utility model provides a double upper lead big output continuous delivery pump.

[0006] The double upper lead big output continuous delivery pump provided by the utility model adopts the following technical scheme:

[0007] The utility model provides a double upper leading high -power continuous conveying pump, including stock bin, charging pump, conveying pump, terminal storehouse, conveying gas source and instrument gas source, conveying pipeline, the lower side of stock bin is connected charging pump through charging pump feeding valve, the exhaust pipeline is installed on charging pump, charging pump is connected conveying pump through upper leading pipeline, conveying pump is connected terminal storehouse through conveying pipeline, conveying gas source is connected charging pump and conveying pump through air pipe, and instrument gas source is connected charging pump and conveying pump respectively and detects its material level,

[0008] The beginning of gas source pipeline is equipped with a hydrophobic separator, and the descending stage of conveying pipeline is equipped with an air supplement device.

[0009] Further, the hydrophobic separator comprises a tank body, an automatic hydrophobic device is installed at the bottom of the tank body, and a flow guide device is arranged inside the tank body.

[0010] Further, the descending stage air supplement device is composed of multiple groups of air inlet structures, each group of air inlet structure is composed of a check valve and a throttling device.

[0011] Further, the charging pump is connected to the conveying pump through the upper leading pipeline in an upper leading mode, a conveying pump feeding valve is installed on the upper leading pipeline, the lower bottom of the charging pump is connected to the conveying gas source and is equipped with a gasification air valve two, and the charging pump is connected to the conveying gas source through the auxiliary air valve one, the main air inlet valve two and the outlet air valve two.

[0012] Further, the conveying pump is connected to the terminal storehouse through the conveying pipeline in an upper leading mode, a conveying pump discharging valve is installed on the conveying pipeline, the lower bottom of the conveying pump is connected to the conveying gas source and is equipped with a gasification air valve one, and the conveying pump is connected to the conveying gas source through the auxiliary air valve one, the main air inlet valve one and the outlet air valve one.

[0013] Further, the conveying pump and the charging pump are arranged in series.

[0014] Further, the volume ratio of the charging pump to the conveying pump is less than 1.

[0015] In summary, the utility model has the advantages that:

[0016] The hydrophobic separator arranged at the beginning of the conveying gas source pipeline can greatly reduce the water content of the conveying air and improve the dryness of the conveying air, the air supplement device arranged at the descending stage of the conveying pipeline can slow down the descending speed of the material, reduce the pipe blockage caused by the change of flow rate, and improve the stability of the conveying system, the conveying pipeline is more suitable for installation in harsh geographical environment, the overall height of the conveying pipeline is reduced, and the engineering cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] Figure 2 It is the overall structure schematic view of the water separation device of the utility model;

[0019] Figure 3 It is the overall structure schematic view of the air supplement device of the utility model.

[0020] As shown in the figure: 1 - silo, 2 - upper leading pipeline, 3 - conveying pump feed valve, 4 - conveying pump, 5 - conveying pump discharge valve, 6 - terminal library, 7 - outlet air valve one, 8 - main air inlet valve one, 9 - auxiliary air valve one, 10 - gasification air valve one, 11 - outlet air valve two, 12 - main air inlet valve two, 13 - auxiliary air valve two, 14 - instrument air source, 15 - conveying air source, 16 - gasification air valve two, 17 charging pump, 18 - charging pump feed valve, 20 - air supplement device, 201 - throttling device, 202 - check valve, 21 - water separation device, 211 - tank body, 212 - automatic water trap, 213 - flow guide device. DETAILED DESCRIPTION

[0021] The utility model is further explained in detail as follows: Figures 1-3 The utility model is further explained in detail as follows:

[0022] The utility model discloses a double upper leading high-power continuous conveying pump, which comprises a silo 1, a charging pump 17, a conveying pump 4, a terminal library 6, a conveying air source 15 and an instrument air source 14. Figures 1-3 As shown in the figure: 1 - silo, 2 - upper leading pipeline, 3 - conveying pump feed valve, 4 - conveying pump, 5 - conveying pump discharge valve, 6 - terminal library, 7 - outlet air valve one, 8 - main air inlet valve one, 9 - auxiliary air valve one, 10 - gasification air valve one, 11 - outlet air valve two, 12 - main air inlet valve two, 13 - auxiliary air valve two, 14 - instrument air source, 15 - conveying air source, 16 - gasification air valve two, 17 charging pump, 18 - charging pump feed valve, 20 - air supplement device, 201 - throttling device, 202 - check valve, 21 - water separation device, 211 - tank body, 212 - automatic water trap, 213 - flow guide device.

[0023] The initial end of the conveying air source pipeline is provided with the water separation device 21, and the air supplement device 20 is arranged in the descending stage of the conveying pipeline.

[0024] In the above embodiment, the water separation device 21 arranged at the initial end of the conveying air source pipeline 15 can greatly reduce the water content of the conveying air and improve the dryness of the conveying air; the air supplement device 20 arranged in the descending stage of the conveying pipeline can slow down the descending speed of the material, reduce the pipe blockage caused by the change of flow rate, and improve the stability of the conveying system; the conveying pipeline arrangement is more suitable for installation in harsh geographical environments; the overall height of the conveying pipeline is reduced, and the engineering cost is reduced.

[0025] Secondly, the hydrophobic separator 21 includes a tank body 211; the bottom of the tank body 211 is provided with a water outlet and is provided with an automatic hydrophobic device 212; the inside of the tank body 211 is provided with a flow guide device 213 to change the direction of airflow; the lower portion of the tank body 211 is provided with an automatic drainage device to automatically drain the water centrifuged out; the air supplement device 20 is composed of multiple groups of air inlets; each group of air inlets is composed of a check valve 202 and a throttling device 201; by adjusting the throttling device 201, the size of the air inlet is controlled, so that the descending speed of the material reaches the best state.

[0026] As shown in Figure 2 , the hydrophobic separator 21 includes a tank body 211; the inside of the tank body 211 is provided with a flow guide device 213; the bottom of the tank body 211 is provided with a water outlet and is provided with an automatic hydrophobic device 212;

[0027] As shown in Figure 3 , the descending section air supplement device 20 is composed of multiple groups of air inlet structures; each group of air inlet structure is composed of a check valve 202 and a throttling device 201;

[0028] In addition, it is worth noting that the throttling device 201 is a kind of air valve for adjusting the air inlet;

[0029] As shown in Figure 1 , the charging pump 17 is connected to the conveying pump 4 through the upper drawing pipeline 2 in an upper drawing mode; the conveying pump inlet valve 3 is installed on the upper drawing pipeline 2; the lower bottom of the charging pump 17 is communicated with the conveying gas source 15 and is provided with the gasification air valve two 16; the charging pump 17 is communicated with the conveying gas source 15 through the auxiliary air valve two 13, the main air inlet valve two 12 and the outlet air valve two 11;

[0030] As shown in Figure 1 , the conveying pump 4 is connected to the terminal warehouse 6 through the conveying pipeline in an upper drawing mode; the conveying pipeline is provided with the conveying pump outlet valve 5; the lower bottom of the conveying pump 4 is communicated with the conveying gas source 15 and is provided with the gasification air valve one 10; the conveying pump 4 is communicated with the conveying gas source 15 through the auxiliary air valve one 9, the main air inlet valve one 8 and the outlet air valve one 7;

[0031] As shown in Figure 1 , the conveying pump 4 and the charging pump 17 are arranged in series;

[0032] As shown in Figure 1 , the volume ratio of the charging pump 17 to the conveying pump 4 is less than 1.

[0033] The implementation principle of the embodiment of the utility model is:

[0034] The low level switch of the bin 1 above the charging pump 17 reflects the material position signal in time, and the low level switch in the delivery pump 4 is not covered, at this time the start of delivery will be triggered. The delivery pump inlet valve 3 and the outlet valve 5 are closed, and the charging pump inlet valve 18 is opened. The material is unloaded into the charging pump 17 under the action of gravity. While the material fills the pump, the charging pump 17 exhaust pipe will be opened, so that air is released from the charging pump 17. When the high level switch of the charging pump 17 indicates that the charging pump 17 has been filled, the charging pump 17 exhaust pipe is closed. After a short delay, the charging pump 17 is completely filled. At this time, the charging pump inlet valve 18 is closed. When the charging pump 17 inlet valve 18 and the exhaust pipe are closed and sealed, and the delivery pump 4 gasification air valve 1 0 is opened, the delivery pump 4 inlet valve 3 is opened. After a short delay that allows the delivery pump 4 inlet valve 3 to be fully opened, air enters the charging pump 17, and the material will be delivered to the delivery pump 4 through the upper inlet pipe 2. When the delivery pressure of the charging pump 17 rises to the preset pressure value, or when the maximum boost process timer is completed, the auxiliary delivery air valve will be closed, and the material is continuously delivered to the delivery pump 4. When the material is completely delivered to the delivery pump 4, a delivery pressure drop signal is generated, all air inlet valves of the charging pump are closed, and the delivery pump inlet valve 3 is closed, completing a charging and delivery, and after a short delay, the exhaust valve of the charging pump 17 is opened, the inlet valve 18 is opened, and the charging pump 17 is filled again. When the low level of the delivery pump 4 is covered, the delivery pump 4 will start the delivery cycle. The delivery pump 4 outlet valve 5 is opened, the air valves of the delivery pump 4 are opened, and the material is delivered to the delivery pipe and enters the terminal warehouse 6. While the delivery pump 4 delivers the material to the terminal warehouse 6, the charging pump 17 is filled again, and the material is continuously delivered to the delivery pump 4 through the valve control. At this time, the delivery pump 4 continuously delivers the material to the terminal warehouse 6 due to its large volume.

[0035] When the delivery system starts, the delivery air enters the delivery system through the hydrophobic separator 21; when the delivery air enters the hydrophobic separator tank 211, under the action of the flow guide device 213, the water in the air is separated by centrifugation and flows to the bottom of the tank, and flows out through the automatic drain.

[0036] When the delivery system starts, the delivery air and the material mixture flow through the descending section of the delivery pipe, and the air inlet is adjusted by the throttling device 201 to control the descending speed of the material flow in the pipe, so that the material flow uniformly flows through the descending section.

[0037] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The various components mentioned in the utility model are common technology in the prior art, which should be understood by the skilled person in the industry. The utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A double up-lead high-power continuous conveying pump, comprising a hopper (1), a charging pump (17), a conveying pump (4), a terminal warehouse (6), a conveying gas source (15) and an instrument gas source (14), the lower part of the hopper (1) is connected with the charging pump (17) through a charging pump feeding valve (18), the charging pump (17) is provided with an exhaust pipe, the charging pump (17) is connected with the conveying pump (4) through an up-lead pipe (2), the conveying pump (4) is connected with the terminal warehouse (6) through a conveying pipe, the conveying gas source (15) is connected with the charging pump (17) and the conveying pump (4) through a gas pipe, and the instrument gas source (14) is connected with the charging pump (17) and the conveying pump (4) and detects the material level thereof; characterized in that: a hydrophobic separator (21) is arranged at the starting end of the conveying gas source (15) pipe; and a gas supplement device (20) is arranged at the lower stage of the conveying pipe.

2. A double top-entry high-capacity continuous delivery pump according to claim 1, characterized in that The hydrophobic separator (21) comprises a tank body (211), the tank body (211) is internally provided with a flow guide device (213), and the tank body (211) is provided with an automatic hydrophobic device (212) at the bottom.

3. A double-top-entry high-capacity continuous delivery pump according to claim 2, wherein: The gas supplement device (20) is composed of multiple groups of air inlet structures, each group of air inlet structure is composed of a check valve (202) and a throttling device (201).

4. A double-top-entry high-capacity continuous delivery pump according to claim 1, wherein The charging pump (17) is connected with the conveying pump (4) through the up-lead pipe (2) in an up-lead mode, a conveying pump feeding valve (3) is arranged on the up-lead pipe (2), a gasification air valve two (16) is arranged on the lower bottom of the charging pump (17) and connected with the conveying gas source (15), and the charging pump (17) is connected with the conveying gas source (15) through an auxiliary air valve two (13), a main air inlet valve two (12) and an outlet air valve two (11) arranged therein.

5. A double-top-entry high-capacity continuous delivery pump according to claim 1, wherein The conveying pump (4) is connected with the terminal warehouse (6) through the conveying pipe in an up-lead mode, a conveying pump discharging valve (5) is arranged on the conveying pipe, a gasification air valve one (10) is arranged on the lower bottom of the conveying pump (4) and connected with the conveying gas source (15), and the conveying pump (4) is connected with the conveying gas source (15) through an auxiliary air valve one (9), a main air inlet valve one (8) and an outlet air valve one (7) arranged therein.

6. A double-top-entry high-capacity continuous delivery pump in accordance with claim 1, wherein The conveying pump (4) and the charging pump (17) are arranged in series.

7. A double-top-head high-capacity continuous delivery pump according to claim 1, characterized in that The volume ratio of the charging pump (17) to the conveying pump (4) is less than 1.

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