Double-outlet serial-tank rotary feeding pump

Abstract

The utility model discloses a double-outlet serial tank rotary feeding pump which comprises a main gas inlet assembly, a nitrogen main path flange type pressing buckle rubber pipe assembly, a material storage tank, a sending tank and a rotary feeding machine. The main gas inlet assembly is connected with the nitrogen main pipeline lower section assembly, the nitrogen main pipeline flange type pressing buckle rubber pipe assembly is installed above the nitrogen main pipeline lower section assembly, the nitrogen main pipeline upper section assembly is installed above the nitrogen main pipeline flange type pressing buckle rubber pipe assembly, and the nitrogen main pipeline upper section assembly is connected with the material storage tank. A hose is mounted on the nitrogen main pipeline upper section assembly, a tank cone fluidization assembly is connected below the hose, and the tank cone fluidization assembly of the nitrogen main pipeline upper section assembly is connected with a storage tank; the nitrogen main pipeline lower section assembly is also connected with a hose, and the lower portion of the hose is connected with a tank cone fluidization assembly. The coal injection device is stable in injection, high in efficiency and unique in structural form, smoothness and no fluctuation of the coal injection device are guaranteed, and uniform and stable injection and no blockage are guaranteed.

Description

Technical Field

[0001] The utility model specifically relates to a double-outlet series tank rotary feeder pump, which is mainly suitable for coal powder injection. Background Art

[0002] Pulverized coal injection is mostly used in the coal chemical industry, such as metering and conveying, fuming furnaces, reduction furnaces, and side-blowing furnaces. It mainly involves quantitatively injecting air and pulverized coal into the slag of the furnace for combustion, so that the slag remains at a high temperature for a long time.

[0003] Most combustion furnaces mainly include shell, feeding device, combustion device, discharging device, air supply device, control device, spray gun, etc. Coal powder or natural gas is mainly used as fuel. The traditional coal powder injection mainly relies on the gravity drop of coal powder bin outlet, and then distributes it to downstream conveyor, metering screw, locking pressure valve, coal powder spray gun and other devices through tubular screw. The injection amount is controlled by adjusting the size of the gas volume. The disadvantage of this process is that it is easy to cause uneven injection amount, the spray gun pipe is easy to be blocked, resulting in uneven combustion in the furnace, resulting in slagging of finished products, and difficult maintenance, which greatly limits the layout of the coal powder bin plant area. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a double-outlet series tank rotary feeder pump to solve the problems existing in the background technology.

[0005] The utility model double-outlet series tank rotary feeder pump is realized by the following technical scheme: comprising a main air intake assembly, a nitrogen main line flange type buckle rubber tube assembly, a storage tank, a sending tank and a rotary feeder;

[0006] The main air intake assembly is connected to the lower section assembly of the nitrogen main line, the flange-type buckle rubber tube assembly of the nitrogen main line is installed above the lower section assembly of the nitrogen main line, the upper section assembly of the nitrogen main line is installed above the flange-type buckle rubber tube assembly of the nitrogen main line, and the upper section assembly of the nitrogen main line is connected to the storage tank; a hose is installed on the upper section assembly of the nitrogen main line, and a tank cone fluidization assembly is connected below the hose, and the tank cone fluidization assembly of the upper section assembly of the nitrogen main line is connected to the storage tank; a hose is also connected to the lower section assembly of the nitrogen main line, and a tank cone fluidization assembly is connected below the hose;

[0007] The inlet of the storage tank is connected to an inlet dome valve, a storage tank inlet flexible joint and a plug valve. The top of the storage tank is provided with a first balancing pipe assembly and a second balancing pipe assembly. The bottom of the storage tank body is provided with a tank cone fluidization assembly, and the outlet is connected to the storage tank outlet dome valve; the inlet of the sending tank is installed with an inlet dome valve, a spray tank balancing pipe is installed on the top, and a spray tank weighing is provided on the sending tank support ear; the bottom of the sending tank body is provided with a spray tank nitrogen fluidization main pipe assembly, the outlet is installed with a rotary feeder, and the bottom of the sending tank cone is provided with a spare outlet dome valve.

[0008] As a preferred technical solution, a flexible joint at the inlet of the storage tank is installed between the inlet dome valve and the gate valve of the storage tank, non-metallic flat gaskets are provided at the joint surfaces of the storage tank, the inlet dome valve of the storage tank, the gate valve, the flexible joint and the outlet dome valve of the storage tank, and a storage tank scale is provided on the storage tank; the tank body cone fluidization assembly is composed of a fluidization base, a diaphragm check valve, a throttle hole joint and a nylon tube.

[0009] As an optimal technical solution, a double-ball rubber soft connection is provided between the sending tank inlet dome valve and the storage tank outlet dome valve, and a non-metallic flat gasket is provided at the joint surface; a blowing tank balance pipe is installed on the top of the sending tank, and a blowing tank scale is installed under the sending tank support ear; the blowing tank nitrogen fluidization main pipe assembly consists of a fluidizing base, a diaphragm check valve, a throttle orifice joint, a nylon tube, etc.; a blowing tank scale is provided on the sending tank support ear, and a material outlet tee III and a rotary feeder are installed at the outlet of the sending tank, and a non-metallic flat gasket is provided at the joint surface.

[0010] As a preferred technical solution, the rotary feeder is an outlet feeder.

[0011] As an optimal technical solution, a rotary feeder is provided at the bottom outlet of the double-outlet series tank feeding pump, and the outlet of the rotary feeder is connected to a conveying pipeline. The pipeline is connected to a material receiving point according to the on-site application process, and the pulverized coal enters the destination along with the main conveying gas; another outlet is provided at the bottom of the injection tank, which can be used as a backup or for backup work when the feeder stops running; considering the flammability of pulverized coal, nitrogen is used for the pressurization and fluidizing components on the top of the storage tank and the sending tank, and compressed air is used for the sending tank injection; the injection conveying can be quantitatively controlled according to the rotary feeder to automatically complete the adjustment of the injection conveying volume, with an error ratio of ±5%.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model has stable spraying and high efficiency;

[0014] 2. The unique structural form of the utility model ensures that the coal injection device is smooth and has no fluctuations, ensuring uniform and stable injection without clogging;

[0015] 3. The utility model's rotary feeder uses current frequency conversion to regulate speed and continuously feed quantitatively, which can realize on-site and online automatic adjustment of feeding amount;

[0016] 4. The utility model has the advantages of simple structure, high precision, stable conveying, few control points, simple operation and low failure rate;

[0017] 5. The feed valve, outlet valve and exhaust valve of the utility model all adopt inflatable spherical cast iron dome valves to ensure the stability of the pressure in the tank;

[0018] 6. The utility model has double outlets (the spare outlet of the spray tank does not pass through the rotary feeder), which can realize dual-mode switching spraying and conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the planar structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of A of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of B of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the C position of the utility model;

[0024] Figure 5 It is a side structural schematic diagram of the utility model;

[0025] Figure 6 It is a structural schematic diagram of D of the utility model;

[0026] Figure 7 It is a schematic diagram of the structure of E of the utility model;

[0027] Figure 8 It is a schematic diagram of the structure of F of the utility model;

[0028] Fig. 9 It is a schematic diagram of the top view structure of the utility model;

[0029] Fig.10 It is a partial view of the manual exhaust of the utility model;

[0030] Fig.11 It is a partial view of the straight-through connector of the utility model. DETAILED DESCRIPTION

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0032] like Figure 1 — Fig.11As shown, a dual-outlet series tank rotary feeder pump of the utility model comprises a main air intake assembly 1, a nitrogen main line flange type buckle rubber tube assembly 3, a storage tank 35, a sending tank 39 and a rotary feeder 40;

[0033] The main air intake assembly 1 is connected to the nitrogen main line lower section assembly 2, the nitrogen main line flange type buckle rubber tube assembly 3 is installed above the nitrogen main line lower section assembly 2, the nitrogen main line upper section assembly 4 is installed above the nitrogen main line flange type buckle rubber tube assembly 3, and the nitrogen main line upper section assembly 4 is connected to the storage tank 35; a hose 15 is installed on the nitrogen main line upper section assembly 4, and a tank cone fluidization assembly 17 is connected below the hose 15, and the tank cone fluidization assembly 17 of the nitrogen main line upper section assembly 4 is connected to the storage tank 35; the nitrogen main line lower section assembly 2 is also connected to the hose 15, and the tank cone fluidization assembly 17 is connected below the hose 15;

[0034] The inlet of the storage tank 35 is connected to the first inlet dome valve 34, the storage tank inlet flexible joint 33 and the gate valve 31. The first balance pipe assembly 28 and the second balance pipe assembly 30 are arranged on the top of the storage tank 35. The bottom of the storage tank 35 body is provided with a tank cone fluidization assembly 17, and the outlet is connected to the storage tank outlet dome valve 36; the inlet of the sending tank 39 is installed with the second inlet dome valve 38, the top is installed with a blowing tank balance pipe 29, and the sending tank support ear is provided with a blowing tank weighing 43; the bottom of the sending tank 39 body is provided with a blowing tank nitrogen fluidization main pipe assembly 24, the outlet is installed with a rotary feeder 40, and the bottom of the cone of the sending tank 39 is provided with a spare outlet dome valve 95.

[0035] In this embodiment, a storage tank inlet flexible joint 33 is installed between the first inlet dome valve 34 of the storage tank and the gate valve 31, and non-metallic flat gaskets are provided at the joint surfaces of the storage tank 35, the first inlet dome valve 34 of the storage tank, the gate valve 31, the flexible joint 33, and the outlet dome valve 36 of the storage tank, and a storage tank weighing 44 is provided on the storage tank 35; the tank body cone fluidizing assembly 17 is composed of a fluidizing base, a diaphragm check valve, a throttle hole joint, and a nylon tube.

[0036] In this embodiment, a double-ball rubber soft connection 37 is provided between the second inlet dome valve 38 of the sending tank and the outlet dome valve 36 of the storage tank, and a non-metallic flat gasket is provided at the joint surface; a blowing tank balance pipe 29 is installed on the top of the sending tank 39, and a blowing tank scale 43 is installed under the sending tank support ear; the blowing tank nitrogen fluidization main pipe assembly 24 is composed of a fluidizing base, a diaphragm check valve, a throttle hole joint, a nylon tube, etc.; a blowing tank scale 43 is provided on the support ear of the sending tank 39, and a material outlet tee III 81 and a rotary feeder 40 are installed at the outlet of the sending tank 39, and a non-metallic flat gasket is provided at the joint surface.

[0037] In this embodiment, the rotary feeder 40 is an outlet feeder.

[0038] In this embodiment,

[0039] The double-outlet series tank rotary feed pump can be connected in series or parallel under the control of the PLC device and work automatically according to the program. The process is as follows:

[0040] During normal blowing, the upper tank is empty, and the upper tank feed valve, exhaust valve, upper tank outlet valve, lower tank feed valve and balance valve are

[0041] All are in the closed state, the lower tank spray and fluidizing gas source are continuously supplied, and the rotary feeder runs at the set speed. When the material in the lower tank is lower than the set weight, the weighing module sends a signal, the exhaust valve of the upper tank opens, and the residual pressure in the upper tank is released. The balance valve and the intermediate valve are still in the closed state. When the upper tank pressure shows that the upper tank pressure drops to 0.02MPa, the upper tank feed valve opens, and the fluidizing gas source at the silo outlet is opened at the same time, and loading begins. When loading, the fluidizing gas source at the bottom of the upper tank is opened to prevent the material in the upper tank from accumulating and agglomerating. When the upper tank is loaded to the set weight, the weighing module sends a signal. After a short delay, the upper tank feed valve and exhaust valve are closed in turn, and loading stops. At this time, the fluidizing gas source at the bottom of the upper tank is still continuously entering the upper tank, and the pressure of the upper tank rises. When the pressure of the upper tank reaches the same level as that of the lower tank, the outlet valve of the upper tank and the feed valve of the lower tank are opened, and the coal powder in the upper tank falls into the lower tank under its own gravity. To help the material discharge, the air inlet valve at the top of the upper tank is opened. At this time, the flow rate of the conveying gas source is controlled by the throttle valve to make the gas volume entering the pump body constant. After the set time, the air inlet valve of the upper tank is closed and the balance valve is opened. After a period of time, the fluidizing gas source, the outlet valve of the upper tank, the feed valve and the balance valve of the lower tank are closed to complete the backflow. When the material in the lower tank drops to the low material level, the exhaust valve of the upper tank is opened, and a new round of loading of the upper tank is started, thus completing an operation cycle.

[0042] The rotary feeder pump is equipped with a weighing and metering device. The weighing controller calculates the actual spraying speed. After comparing it with the spraying speed set by the control device, the motor speed of the rotary feeder is adjusted to make the actual spraying speed reach the set value to ensure the spraying accuracy. The material delivery volume can be adjusted at any time through the screen.

[0043] When the device is about to be blocked, it will cause the pressure of the conveying gas in the pipeline to change. At this time, the control device will automatically adjust the feeding speed according to the detected signal to avoid blockage. In case of blockage, the device will automatically stop rotating the feeder and close the conveying gas. When the pressure in the pipeline drops to 600pa, the device will automatically open the control valve of the conveying gas. After repeatedly opening and closing the control valve and continuously blowing the material, the blockage can be cleared.

[0044] The device has various alarm functions. If the device is blocked or the air source pressure is low, the device will alarm. During the spraying process, once the pipeline pressure rises and reaches the preset warning value, the control device will send out an alarm signal and enter the blockage removal process.

[0045] Once the pipe is blocked or the rotary feeder stops working, the spare outlet of the sending tank starts working, and the weighing and metering devices of the upper and lower tanks are used to calculate the actual amount of material being sprayed through the weighing controller.

[0046] The self-diagnosis function set in the device can diagnose the working conditions of each part of the device online. When a feed valve, intermediate valve, balance valve or pressure switch is in an abnormal state or even fails, the self-diagnosis device will find the problem and remind the operator to deal with it in time.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A double-outlet series tank rotary feed pump, characterized in that: It comprises a main air intake assembly (1), a nitrogen main line flange-type press-fit rubber tube assembly (3), a storage tank (35), a sending tank (39) and a rotary feeder (40); The main air intake assembly (1) is connected to the nitrogen main line lower section assembly (2); the nitrogen main line flange type press-fit rubber tube assembly (3) is installed above the nitrogen main line lower section assembly (2); the nitrogen main line upper section assembly (4) is installed above the nitrogen main line flange type press-fit rubber tube assembly (3); and the nitrogen main line upper section assembly (4) is connected to a storage tank (35); a hose (15) is installed on the nitrogen main line upper section assembly (4); a tank cone fluidizing assembly (17) is connected below the hose (15); and the tank cone fluidizing assembly (17) of the nitrogen main line upper section assembly (4) is connected to the storage tank (35); the nitrogen main line lower section assembly (2) is also connected to a hose (15); and a tank cone fluidizing assembly (17) is connected below the hose (15); The inlet of the storage tank (35) is connected to a first inlet dome valve (34), a storage tank inlet flexible joint (33) and a gate valve (31); the top of the storage tank (35) is provided with a first balance pipe assembly (28) and a second balance pipe assembly (30); the bottom of the storage tank (35) body is provided with a tank cone fluidization assembly (17); the outlet is connected to a storage tank outlet dome valve (36); the inlet of the sending tank (39) is provided with a second inlet dome valve (38); the top is provided with a spray tank balance pipe (29); the sending tank support ear is provided with a spray tank weighing (43); the bottom of the sending tank (39) body is provided with a spray tank nitrogen fluidization main pipe assembly (24); the outlet is provided with a rotary feeder (40); the bottom of the sending tank (39) cone is provided with a spare outlet dome valve (95); A double-ball rubber flexible connection (37) is provided between the second inlet dome valve (38) of the sending tank and the outlet dome valve (36) of the storage tank, and a non-metallic flat gasket is provided at the joint surface; a blowing tank balance pipe (29) is installed on the top of the sending tank (39), and a blowing tank scale (43) is installed below the sending tank support ear; a blowing tank scale (43) is provided on the support ear of the sending tank (39), and a material outlet tee III (81) and a rotary feeder (40) are installed at the outlet of the sending tank (39), and a non-metallic flat gasket is provided at the joint surface; The rotary feeder (40) is an outlet feeder, wherein the main air intake assembly (1) is connected to a nitrogen main line lower section assembly (2), a nitrogen main line flange-type press-fit rubber tube assembly (3) is installed above the nitrogen main line lower section assembly (2), an nitrogen main line upper section assembly (4) is installed above the nitrogen main line flange-type press-fit rubber tube assembly (3), and the nitrogen main line upper section assembly (4) is connected to a storage tank (35); a hose (15) is installed on the nitrogen main line upper section assembly (4), and a tank cone fluidizing assembly (17) is connected below the hose (15), and the tank cone fluidizing assembly (17) of the nitrogen main line upper section assembly (4) is connected to the storage tank (35); a hose (15) is also connected to the nitrogen main line lower section assembly (2), and a tank cone fluidizing assembly (17) is connected below the hose (15), and the tank cone fluidizing assembly (17) of the nitrogen main line lower section assembly (2) is connected to a sending tank (39).

2. The double-outlet series tank rotary feeder pump according to claim 1 is characterized in that: A storage tank inlet flexible joint (33) is installed between the storage tank first inlet dome valve (34) and the gate valve (31); non-metallic flat gaskets are provided at the joint surfaces of the storage tank (35), the storage tank first inlet dome valve (34), the gate valve (31), the flexible joint (33), and the storage tank outlet dome valve (36); and a storage tank weighing device (44) is provided on the storage tank (35).

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