High-pressure centralized liquid supply device for emulsion

Abstract

This utility model relates to the field of liquid supply device technology and discloses a high-pressure centralized liquid supply device for emulsions. The device includes: a support frame; a controller and a frequency converter fixedly mounted on top of the support frame; a fixed frame on top of the support frame; a permanent magnet motor fixedly mounted inside the fixed frame; and an emulsion pump fixedly mounted on top of the support frame. The controller limits the opening time of the exhaust valve to prevent damage to the air chamber due to excessive internal and external pressure differences. Simultaneously, when the hydraulic pressure inside the transfer pipe changes, the controller can output a control signal to adjust the frequency of the frequency converter's output current after the hydraulic gauge monitoring data changes, thereby adjusting the speed of the permanent magnet motor in real time. When the internal pressure of the pipeline is too high, the speed of the permanent magnet motor is reduced to prevent the permanent magnet motor from maintaining its default operating condition when the pipeline pressure exceeds the threshold, which could lead to emulsion spraying out.

Description

Technical Field

[0001] This utility model relates to the field of liquid supply device technology, specifically a high-pressure centralized liquid supply device for emulsion. Background Technology

[0002] Mining emulsion pump stations are one of the key pieces of equipment in modern, high-yield, and high-efficiency fully mechanized mining faces in coal mines. To ensure the safe and reliable operation of fully mechanized mining faces, mining emulsion pump stations are needed to transport emulsions.

[0003] The existing Chinese utility model patent with publication number CN206881669U discloses a centralized liquid supply system for mining areas. The water purification device includes a flocculation pretreatment device, a filtration device, a softening device, a pH adjustment device, and a water storage device; the liquid mixing device includes a mixing tank, a mixer, a concentration sensor, a second electrically controlled valve, a water flow meter, a high-pressure pump, a gear oil pump, and a frequency converter; the liquid supply device includes multiple sets of emulsion delivery components and working face return components. This utility model proposes a centralized liquid supply system for mining areas that achieves automatic proportioning of emulsified oil and clean water, improves the quality of emulsion supply, increases mixing efficiency, saves significant amounts of electricity, reduces the frequency of emulsion pump failures, saves maintenance costs, and ensures the performance of the emulsion pump and the stability of the hydraulic system.

[0004] Existing emulsion supply systems typically require multiple emulsion pumps to operate simultaneously to ensure long-distance delivery. When all pumps are running concurrently, the hydraulic pressure within the pipeline remains at its highest level, making adjustments impossible and impacting the pumps' lifespan. Furthermore, existing systems cannot adjust the pump speed in real-time based on pipeline pressure. When the pressure reaches its limit, a pressure relief mechanism is used. However, because the external gas pressure is significantly lower than the internal hydraulic pressure, the emulsion is ejected due to the pressure difference, leading to some emulsion waste. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a high-pressure centralized emulsion supply device, which has the advantages of avoiding emulsion waste and being able to adjust the emulsion pump speed according to needs, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure centralized emulsion supply device, comprising: a support frame, a controller fixedly installed above the support frame, a frequency converter fixedly installed above the support frame, a fixed frame fixedly installed above the support frame, a permanent magnet motor fixedly installed inside the fixed frame, an emulsion pump fixedly installed above the support frame, an inlet pipe fixedly installed above the emulsion pump, a solenoid valve fixedly installed at the front end of the emulsion pump, a transfer pipe fixedly installed at the front end of the solenoid valve, a hydraulic gauge inserted at the front end of the transfer pipe, a diverter pipe fixedly installed at the lower end of the transfer pipe, a drain pipe fixedly installed at the front end of the diverter pipe, a cylinder fixedly installed above the drain pipe, an air bladder fixedly installed inside the cylinder, and an exhaust valve fixedly installed above the cylinder; the controller is capable of coordinating the frequency converter and the exhaust valve.

[0009] As a preferred embodiment of this utility model, the permanent magnet motor is equidistantly mounted on the support frame via a fixing bracket, and the frequency converter is fixedly mounted on the left side of each permanent magnet motor; the permanent magnet motor is capable of driving an emulsion pump.

[0010] As a preferred technical solution of this utility model, the rotating shaft of the permanent magnet motor is fixedly connected to the power input shaft of the emulsion pump, and the inlet pipe is fixed to the inlet end of each emulsion pump by bolts; the inlet pipe can facilitate the connection of the emulsion pump to the upstream conveying pipeline.

[0011] As a preferred embodiment of this utility model, the adapter pipe has a 90-degree bend structure, and the rear end of the adapter pipe is fixedly connected to the outlet end of the emulsion pump by bolts; the adapter pipe facilitates the entry of emulsion into the drain pipe.

[0012] As a preferred embodiment of this utility model, the metal contact of the hydraulic gauge penetrates through the adapter pipe, and the rear end of the hydraulic gauge contact is located at the center of the corner structure of the adapter pipe; the hydraulic gauge can monitor the hydraulic pressure inside the adapter pipe.

[0013] As a preferred embodiment of this utility model, the top of the diversion pipe is provided with three vertical branches, and the top of the branches of the diversion pipe is fixedly connected to the bottom of the corresponding transfer pipe; the diversion pipe can facilitate the centralized discharge of emulsion.

[0014] As a preferred embodiment of this utility model, the drain pipe has a three-way structure, the drain pipe is connected to the cylinder body, the top of the airbag is fixedly connected to the exhaust valve, and the exhaust valve is fixed to the top of the cylinder body by bolts; the exhaust valve can restrict the airbag from venting.

[0015] Compared with the prior art, this utility model provides a high-pressure centralized emulsion supply device, which has the following beneficial effects:

[0016] 1. This utility model utilizes an airbag design. An exhaust valve supplies air to the airbag, maintaining a certain internal pressure. When the exhaust valve is closed, the pressure of the emulsion causes the airbag to contract slightly. When the exhaust valve opens, the air inside the airbag is expelled, reducing the internal pressure and allowing the emulsion to enter the cylinder. This reduces the hydraulic pressure inside the pipeline. A controller limits the opening time of the exhaust valve to prevent damage to the airbag due to excessive internal and external pressure differences. Simultaneously, when the hydraulic pressure inside the transfer pipe changes, the controller outputs a control signal to adjust the frequency of the inverter's output current after the hydraulic gauge data changes, thus adjusting the speed of the permanent magnet motor in real time. When the pressure inside the pipeline is too high, the speed of the permanent magnet motor is reduced to prevent the motor from maintaining its default operating condition when the pipeline pressure exceeds a threshold, which could lead to emulsion spraying out.

[0017] 2. This utility model, through the setting of the controller, can output control signals based on the monitoring data of the hydraulic gauge to adjust the frequency of the inverter output current, thereby adjusting the speed of the permanent magnet motor. The fixing bracket can limit the position of the permanent magnet motor. The rotating shaft of the permanent magnet motor is fixedly connected to the power input shaft of the emulsion pump. The conveying efficiency of the emulsion pump is positively correlated with the speed of the permanent magnet motor. When the speed of the permanent magnet motor changes, the hydraulic pressure inside the transfer pipe will change. By setting the pipeline pressure threshold through the controller, the controller will adjust the speed of the three permanent magnet motors after conversion, so that the speed of the permanent magnet motor is kept in a suitable range, avoiding the permanent magnet motor maintaining a high speed for a long time, which will affect the service life of the emulsion pump. At the same time, the current of the permanent magnet motor is controlled by an independent frequency converter, which can adjust the speed of each permanent magnet motor individually as needed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the emulsion pump of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the diversion pipe of this utility model;

[0021] Figure 4 This is a schematic diagram of the airbag installation structure of this utility model;

[0022] The components are as follows: 1. Support frame; 11. Controller; 12. Frequency converter; 13. Fixing frame; 14. Permanent magnet motor; 15. Emulsion pump; 16. Inlet pipe; 17. Solenoid valve; 18. Transfer pipe; 19. Hydraulic gauge; 110. Diverter pipe; 111. Drain pipe; 112. Cylinder body; 113. Airbag; 114. Exhaust valve. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4 In this embodiment, a high-pressure centralized emulsion supply device includes: a support frame 1, a PLC controller 11 fixedly installed above the support frame 1, a frequency converter 12 fixedly installed above the support frame 1, a fixed frame 13 fixedly installed above the support frame 1, a permanent magnet motor 14 fixedly installed inside the fixed frame 13, an emulsion pump 15 fixedly installed above the support frame 1, an inlet pipe 16 fixedly installed above the emulsion pump 15, a solenoid valve 17 fixedly installed at the front end of the emulsion pump 15, a transfer pipe 18 fixedly installed at the front end of the solenoid valve 17, a hydraulic gauge 19 inserted at the front end of the transfer pipe 18, a diverter pipe 110 fixedly installed at the lower end of the transfer pipe 18, a drain pipe 111 fixedly installed at the front end of the diverter pipe 110, a cylinder 112 fixedly installed above the drain pipe 111, an air bladder 113 fixedly installed inside the cylinder 112, and an exhaust valve 114 fixedly installed above the cylinder 112.

[0027] The permanent magnet motor 14 is equidistantly mounted on the support frame 1 above the fixed frame 1 via the fixing bracket 13. The frequency converter 12 is fixedly mounted on the left side of each permanent magnet motor 14. The rotating shaft of the permanent magnet motor 14 is fixedly connected to the power input shaft of the emulsion pump 15. The inlet pipe 16 is fixed to the inlet end of each emulsion pump 15 by bolts. The adapter pipe 18 has a 90-degree bend structure. The rear end of the adapter pipe 18 is fixedly connected to the outlet end of the emulsion pump 15 by bolts. The metal contact of the hydraulic gauge 19 passes through the adapter pipe 18, and the rear end of the hydraulic gauge 19 contact is located at the center of the corner structure of the adapter pipe 18. Three vertical branches are provided above the diversion pipe 110, and the top end of the branches of the diversion pipe 110 is fixedly connected to the bottom end of the corresponding adapter pipe 18. The drain pipe 111 has a three-way structure and is connected to the cylinder body 112. The top end of the air bag 113 is fixedly connected to the exhaust valve 114. The exhaust valve 114 is fixed to the top end of the cylinder body 112 by bolts.

[0028] Specifically, the PLC controller 11 is model PR10, the frequency converter 12 is model EV510A, the permanent magnet motor 14 is model TYFD, and the solenoid valve 17 is model ZK1153. The support frame 1 supports the PLC controller 11. The PLC controller 11 can output control signals based on the monitoring data of the hydraulic gauge 19 to adjust the frequency of the output current of the frequency converter 12, thereby adjusting the speed of the permanent magnet motor 14. The fixing frame 13 can limit the position of the permanent magnet motor 14. The rotating shaft of the permanent magnet motor 14 is fixedly connected to the power input shaft of the emulsion pump 15. The conveying efficiency of the emulsion pump 15 is positively correlated with the speed of the permanent magnet motor 14. When the speed of the permanent magnet motor 14 changes, the hydraulic pressure inside the transfer pipe 18 will change. Since the contact of the hydraulic gauge 19 is located at the center of the corner of the transfer pipe 18, the hydraulic gauge 19 can monitor the liquid pressure inside the transfer pipe 18 in real time. The emulsion will be conveyed by the emulsion pump 15 and enter the diversion pipe 110 through the transfer pipe 18 for collection. The discharge is achieved by using a solenoid valve 17, located between the outlet of the emulsion pump 15 and the transfer pipe 18, to prevent the emulsion inside the transfer pipe 18 from flowing back. The cylinder 112 restricts the position of the air bladder 113, and the top of the air bladder 113 is fixedly connected to the exhaust valve 114. The exhaust valve 114 supplies a certain amount of air into the air bladder 113 to maintain a certain air pressure inside the air bladder 113. When the exhaust valve 114 is closed, the pressure of the emulsion causes the air bladder 113 to contract slightly. When the exhaust valve 114 is opened, the air inside the air bladder 113 is discharged, the air pressure inside the air bladder 113 decreases, and the emulsion can enter the cylinder 112, thereby reducing the hydraulic pressure inside the pipeline. At the same time, when the hydraulic pressure inside the transfer pipe 18 changes, the PLC controller 11 can output a control signal to adjust the frequency of the output current of the frequency converter 12 after the data monitored by the hydraulic gauge 19 changes, and adjust the speed of the permanent magnet motor 14 in real time to prevent the permanent magnet motor 14 from maintaining the default operating condition when the pipeline pressure exceeds the threshold.

[0029] During operation, a certain amount of air is supplied to the airbag 113 through the exhaust valve 114 to maintain a certain air pressure inside the airbag 113. When the exhaust valve 114 is closed, the pressure of the emulsion causes the airbag 113 to contract partially. When the exhaust valve 114 is opened, the air inside the airbag 113 is discharged, the air pressure inside the airbag 113 decreases, and the emulsion can enter the cylinder 112, thereby reducing the hydraulic pressure inside the pipeline. The PLC controller 11 limits the opening time of the exhaust valve 114 to prevent the airbag 113 from being damaged due to excessive internal and external pressure difference. At the same time, when the hydraulic pressure inside the transfer pipe 18 changes, the PLC controller 11 can output a control signal to adjust the frequency of the inverter 12's output current after the data monitored by the hydraulic gauge 19 changes, and adjust the speed of the permanent magnet motor 14 in real time. When the pressure inside the pipeline is too high, the speed of the permanent magnet motor 14 is reduced to prevent the permanent magnet motor 14 from maintaining the default operating condition when the pipeline pressure exceeds the threshold, which could lead to... When the emulsion is sprayed out, the PLC controller 11 can output a control signal based on the monitoring data of the hydraulic gauge 19 to adjust the frequency of the output current of the frequency converter 12, thereby adjusting the speed of the permanent magnet motor 14. The mounting bracket 13 can limit the position of the permanent magnet motor 14. The rotating shaft of the permanent magnet motor 14 is fixedly connected to the power input shaft of the emulsion pump 15. The conveying efficiency of the emulsion pump 15 is positively correlated with the speed of the permanent magnet motor 14. When the speed of the permanent magnet motor 14 changes, the hydraulic pressure inside the transfer pipe 18 will change. By setting the pipeline pressure threshold through the PLC controller 11, the PLC controller 11 will adjust the speed of the three permanent magnet motors 14 after conversion, so that the speed of the permanent magnet motors 14 is kept in a suitable range, avoiding the permanent magnet motors 14 from maintaining a high speed for a long time, which would affect the service life of the emulsion pump 15. At the same time, the current of the permanent magnet motor 14 is controlled by an independent frequency converter 12, which can adjust the speed of each permanent magnet motor 14 individually as needed.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure centralized emulsion supply device, characterized in that, include: A support frame (1) is provided, on which a controller (11) is fixedly installed. A frequency converter (12) is fixedly installed on top of the support frame (1). A fixed frame (13) is fixedly installed on top of the support frame (1). A permanent magnet motor (14) is fixedly installed inside the fixed frame (13). An emulsion pump (15) is fixedly installed on top of the support frame (1). An inlet pipe (16) is fixedly installed on top of the emulsion pump (15). A solenoid valve (17) is fixedly installed at the front end of the emulsion pump (15). A connector (18) is fixedly installed at the front end of the solenoid valve (17). A hydraulic gauge (19) is inserted through the front end of the connector (18). A diverter pipe (110) is fixedly installed at the lower end of the connector (18). A drain pipe (111) is fixedly installed at the front end of the diverter pipe (110). A cylinder (112) is fixedly installed above the drain pipe (111). An air bladder (113) is fixedly installed inside the cylinder (112). An exhaust valve (114) is fixedly installed above the cylinder (112).

2. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The permanent magnet motor (14) is equidistantly mounted on the support frame (1) via a fixing bracket (13), and the frequency converter (12) is fixedly mounted on the left side of each permanent magnet motor (14).

3. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The rotating shaft of the permanent magnet motor (14) is fixedly connected to the power input shaft of the emulsion pump (15), and the inlet pipe (16) is fixed to the inlet end of each emulsion pump (15) by bolts.

4. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The adapter pipe (18) has a 90-degree bend structure, and the rear end of the adapter pipe (18) is fixedly connected to the outlet end of the emulsion pump (15) by bolts.

5. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The metal contacts of the hydraulic gauge (19) penetrate the adapter pipe (18), and the rear end of the hydraulic gauge (19) contacts is located at the center of the corner structure of the adapter pipe (18).

6. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The top of the diversion pipe (110) is provided with three vertical branches, and the top of the branches of the diversion pipe (110) is fixedly connected to the bottom of the corresponding adapter pipe (18).

7. The high-pressure centralized emulsion supply device according to claim 1, characterized in that: The drain pipe (111) has a three-way structure and is connected to the cylinder (112). The top of the airbag (113) is fixedly connected to the exhaust valve (114), and the exhaust valve (114) is fixed to the top of the cylinder (112) by bolts.

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