Self-flushing slurry pump system

Abstract

The utility model discloses a self-flushing slurry pump system which comprises a slurry pump, a slurry storage tank, an inlet pipe, an outlet pipe, a flushing water tank, a flushing water control valve, a flushing water pipe, a slurry pump control valve, a start button, a start controller, a time relay and a stop button. When the slurry pump needs to be shut down for flushing, the stop button is pressed down, the control system closes the slurry pump control valve and opens the flushing water control valve to flush the slurry pump and a pipeline of the slurry pump, after the flushing time is up, the time relay is switched off, the normally open contact of the starting controller is switched off, the slurry pump stops running, and the flushing water control valve is switched on. And the control system closes the flushing water control valve. The utility model solves the problem of consolidation during the shutdown period of the slurry pump needing to be periodically started and stopped, automatically runs after the pump stopping operation and automatically stops after the flushing is completed, does not need to add additional operation steps, and has the characteristics of simplicity in operation and strong practicability.

Description

Technical Field

[0001] The utility model relates to the field of slurry material transportation, in particular to a self-flushing slurry pump system. Background Art

[0002] Since the slurry pump conveys a mixture of solid particles and water containing slag, most of the solid-liquid mixture has a solidifying property, especially in a non-flowing state, it is easy to solidify. Therefore, in actual production, in order to meet the needs of production process and production rhythm, the slurry pump conveying system needs to be started and stopped frequently. After the shutdown, the slurry cannot be completely discharged, and most of it remains in the pipeline and slurry pump. If the shutdown time is too long, the slurry will solidify in the pipeline and slurry pump, greatly reducing the slurry pump conveying efficiency, or even completely blocking the slurry pump and pipeline system.

[0003] In the prior art, the slurry pump is cleaned by an external flushing device, which requires the external cleaning system to be connected during cleaning, resulting in complicated operation and great difficulty in execution. In addition, the slurry pump pipeline system is not flushed in the prior art, resulting in poor cleaning effect and failure to completely solve the pipeline blockage problem.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] In view of the above problems and the deficiencies of the prior art, the purpose of the utility model is to provide a self-flushing slurry pump system to solve the problems of the existing slurry pump flushing device being difficult to execute, complicated to operate, and failing to flush the slurry pump piping system resulting in poor cleaning effect.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A self-flushing slurry pump system comprises: a slurry pump, a slurry storage tank, an inlet pipe, an outlet pipe, a flushing water tank, a flushing water control valve, a flushing water pipe, a slurry pump control valve, a stop button, a first intermediate relay and a second intermediate relay; wherein the flushing water control valve is arranged on the flushing water pipe connected to the flushing water tank, and is used to flush the slurry pump and the slurry pump pipeline when the flushing water control valve is opened; the slurry pump is connected to the outlet pipe for conveying slurry; the stop button is respectively connected to the first intermediate relay and the second intermediate relay, and is used to control the first intermediate relay to be powered on, closed or disconnected; the slurry pump control valve is arranged on the inlet pipe connected to the slurry storage tank, and is connected to the second intermediate relay, and is used to control the slurry in the slurry storage tank to enter the inlet pipe; the second intermediate relay is respectively connected to the flushing water control valve and the slurry pump control valve, and is used to close and conduct the second intermediate relay when the stop button is pressed, so as to control the slurry pump control valve to be closed, and control the flushing water control valve to be opened.

[0008] According to the above technical means, the first intermediate relay is connected to the second intermediate relay, and when the stop button is pressed, the normally open contact of the first intermediate relay closes to energize the second intermediate relay, thereby controlling the slurry pump control valve to close and the flushing water control valve to open. The slurry pump control valve is used to close the valve when flushing the slurry pump, the pipeline between the inlet pipe and the outlet pipe, and control the valve to open when stopping flushing.

[0009] The utility model is further arranged that the slurry pump system also includes: a start button, a start controller, a third intermediate relay and a fourth intermediate relay; the start button is connected with the start controller, and is used to close the normally open contact of the start controller when the start button is pressed to start, thereby starting the slurry pump; the third intermediate relay is connected with the start button, and is used to power on the third intermediate relay to close the normally open contact of the third intermediate relay when the start button is started, thereby opening the slurry pump control valve; the fourth intermediate relay is connected with the third intermediate relay, and is used to power on the fourth intermediate relay to disconnect the normally closed contact of the fourth intermediate relay after the slurry pump control valve is fully opened, and the third intermediate relay loses power, thereby keeping the slurry pump control valve in the fully open valve position, and the slurry pump operates normally.

[0010] According to the above technical means, when the slurry pump needs to start working, the slurry pump and its pipeline self-flushing control system control the slurry pump control valve to open through the third intermediate relay and the fourth intermediate relay, so that the slurry pump starts working.

[0011] The utility model is further arranged that the slurry pump system also includes: a time relay; the time relay is respectively connected to the stop button, the start controller, the first intermediate relay and the second intermediate relay, and is used to control the first intermediate relay to conduct when the stop button is pressed, so that the time relay is energized and the time relay starts timing; during the timing process, the normally open contact of the time relay is closed to control the start controller to maintain the slurry pump to continue running.

[0012] According to the above technical means, the time relay provides delay control to ensure that the slurry pump is automatically flushed after being shut down again.

[0013] The utility model is further arranged that the slurry pump system also includes: a fifth intermediate relay and a sixth intermediate relay; the fifth intermediate relay is connected to the second intermediate relay, and is used for when the second intermediate relay loses power, the fifth intermediate relay is energized, and at the same time the normally open contact of the fifth intermediate relay is closed to close the flushing water control valve; the sixth intermediate relay is connected to the second intermediate relay, and is used for when the flushing water control valve is completely closed, the normally closed contact of the sixth intermediate relay is closed, and the fifth intermediate relay loses power.

[0014] The utility model is further arranged that the slurry pump system also includes: a fuse; when the operating current of the slurry pump system exceeds a set value, the internal fuse of the fuse melts, and is used to cut off the circuit when the current is too large, thereby protecting the circuit from damage caused by overload or short circuit.

[0015] The utility model is further arranged that the slurry pump system also includes: an isolating switch and a power supply; the isolating switch is connected to the power supply and the slurry pump respectively, and is used to electrically isolate the power supply from the slurry pump system when flushing the slurry pump and its pipeline.

[0016] The utility model is further arranged that the slurry pump system further comprises: an emergency stop button; the emergency stop button is connected with the start button and is used to manually control the stop of the system.

[0017] The utility model further arranges that the slurry pump system also includes: a power indicator light, a stop indicator light and an operation indicator light; the power indicator light is connected to the fuse to display the power-on status of the system; the stop indicator light is connected to the start controller to display that the system is in a stopped operating state; the operation indicator light is connected in parallel with the stop indicator light to display that the system is in an operating state.

[0018] According to the above technical means, the power indicator light, the stop indicator light and the run indicator light provide a visual indication of the system status.

[0019] The utility model is further arranged that the slurry pump system also includes: a float valve and a flushing water inlet pipe; the float valve is arranged inside the flushing water tank and connected to the flushing water inlet pipe, and is used to store flushing water for flushing the slurry pump and its pipelines, when the water level in the water tank reaches the target water level, the float valve closes the valve, and when the water level in the water tank does not reach the target water level, the float valve opens the valve, thereby realizing automatic replenishment of flushing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the control principle diagram of the slurry pump and its pipeline self-flushing system.

[0021] Figure 2 It is the configuration diagram of the slurry pump and its pipeline self-flushing system.

[0022] The marks in the attached figure are: 01, flushing water inlet pipe; 02, float valve; 03, flushing water tank; 04, flushing water control valve; 05, flushing water pipe; 06, slurry pump control valve; 07, slurry storage tank; 08, inlet pipe; 09, slurry pump; 10, outlet pipe; FU, fuse; KS, time relay; KA1, first intermediate relay; KA2, second intermediate relay; KA3, third intermediate relay; KA4, fourth intermediate relay; KA5, fifth intermediate relay; KA6, sixth intermediate relay; WH, power indicator light; GN, stop indicator light; RD, operation indicator light; QA, isolating switch; CPS, start controller; SB1, emergency stop button; SB2, start button; SB3, stop button; SQ1, slurry pump control valve limit switch; SQ2, flushing water control valve limit switch. DETAILED DESCRIPTION

[0023] The utility model provides a self-flushing slurry pump system. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] In the embodiments and patent claims, unless the article is specifically limited in the text, "a", "an", "said" and "the" may also include plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0025] It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can also be intermediate elements. In addition, the "connection" or "coupling" used here can include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0026] The present application provides a self-flushing slurry pump system, such as Figure 1 As shown, a self-flushing slurry pump system includes: a slurry pump 09, a slurry storage tank 07, an inlet pipe 08, an outlet pipe 10, a flushing water tank 03, a flushing water control valve 04, a flushing water pipe 05, a slurry pump control valve 06, a stop button SB3, a first intermediate relay KA1 and a second intermediate relay KA2; wherein the flushing water control valve 04 is arranged on the flushing water pipe 05 connected to the flushing water tank 03, and is used to flush the slurry pump 09 and its pipeline when the flushing water control valve 04 is opened; the slurry pump 09 is connected to the outlet pipe 10 for conveying slurry; the stop button SB3 is respectively connected to the first intermediate relay KA1 and the second intermediate relay KA2. 1 is connected to the second intermediate relay KA2, and is used to control the first intermediate relay KA1 to be energized, closed or disconnected; the slurry pump control valve 06 is arranged on the inlet pipe connected to the slurry storage tank 07, and is connected to the second intermediate relay KA2, and is used to control the slurry in the slurry storage tank 07 to enter the inlet pipe 08; the second intermediate relay KA2 is respectively connected to the flushing water control valve 04 and the slurry pump control valve 06, and is used to close and conduct the second intermediate relay KA2 when the stop button SB3 is pressed, so as to control the slurry pump control valve 06 to be closed, and control the flushing water control valve 04 to be opened.

[0027] In this embodiment, if Figure 1 and Figure 2 As shown, when the slurry pump 09 needs to be stopped, the stop button SB3 is activated, the stop button SB3 is connected to the first intermediate relay KA1, and the normally open contact of the first intermediate relay KA1 is closed. The first intermediate relay KA1 is connected to the second intermediate relay KA2, which is responsible for controlling the closing of the slurry pump control valve 06 and the opening of the flushing water control valve 04. The first intermediate relay KA1 cooperates with the time relay KS to keep the slurry pump 09 running continuously and automatically complete the flushing of the inlet pipe 08, the slurry pump 09, and the outlet pipe 10.

[0028] In this embodiment, the flushing water in the flushing water tank 03 is production water with poor water quality. Combined with the on-site use environment, an ordinary stainless steel water tank is selected. According to time experience, flushing for 30 seconds is more economical. The water tank V (volume) is calculated to be Q (80) × t (0.5 / 60) = 0.67m³. Considering the safety margin, a 0.8m³ water tank is selected to meet the flushing requirements. The volume of the flushing water tank 03 is set according to the flushing time and flushing water flow of the slurry pump to meet the flushing requirements once. The flushing water control valve 04 and the slurry pump control valve 06 are electric control valves with switch in place signals and remote automatic control functions.

[0029] In some embodiments, the slurry pump system also includes: a start button SB2, a start controller CPS, a third intermediate relay KA3 and a fourth intermediate relay KA4; the start button SB2 is connected to the start controller CPS, and is used to close the normally open contact of the start controller CPS when the start button SB2 is pressed to start, thereby starting the slurry pump 09; the third intermediate relay KA3 is connected to the start button SB2, and is used to energize the third intermediate relay KA3 to close the normally open contact of the third intermediate relay KA3 when the start button SB2 is started, thereby opening the slurry pump control valve 06; the fourth intermediate relay KA4 is connected to the third intermediate relay KA3, and is used to energize the fourth intermediate relay KA4 to disconnect the normally closed contact of the fourth intermediate relay KA4 after the slurry pump control valve 06 is fully opened, and the third intermediate relay KA3 loses power, thereby keeping the slurry pump control valve 06 in the fully open valve position, and the slurry pump 09 operates normally.

[0030] In this embodiment, when the slurry pump 09 needs to start running, all safety measures are checked to ensure the safety of the startup process, and then the operator presses the start button SB2. The normally open point of the third intermediate relay KA3 closes to control the slurry pump control valve 06 to open. When the slurry pump control valve 06 is fully opened, the normally closed contact of the fourth intermediate relay KA4 is disconnected to control the third intermediate relay KA3 to lose power, and the slurry pump control valve 06 remains in the fully open valve position.

[0031] like Figure 1 As shown, the starting controller CPS is a relay with 5 contacts, among which 3 contacts are normally open contacts that can be closed after power is supplied and 2 contacts are normally closed contacts that can be opened after power is lost. The first normally open contact of the starting controller CPS controls the start of the slurry pump 09.

[0032] The second normally open contact of the starting controller CPS cooperates with the stop button SB3, the first intermediate relay KA1 and the time relay KS, so that pressing the stop button SB3 causes the first intermediate relay KA1 to be energized, and the normally open node of the first intermediate relay KA1 is closed, causing the time relay KS to be energized. Finally, the slurry pump 09 loses power to the starting controller CPS after running for a certain period of time, and the slurry pump 09 stops.

[0033] The third normally open contact of the start controller CPS controls the operation indicator light RD to light up.

[0034] like Figure 1 As shown, the starting controller CPS has two normally closed contacts, and the first normally closed contact of the starting controller CPS is connected to the flushing water control valve 04 and the fuse FU, and is used to control the flushing water control valve 04 to close after the first normally closed contact of the starting controller CPS loses power, thereby ensuring that the flushing water control valve 04 is completely closed.

[0035] The second normally closed contact of the start controller CPS is connected to the fuse FU and the stop indicator light GN, and is used to control the stop operation indicator light RD to light up after the second normally closed contact of the start controller CPS loses power.

[0036] In some embodiments, the slurry pump system also includes: a time relay KS; the time relay KS is respectively connected to the stop button SB3, the start controller CPS, the first intermediate relay KA1 and the second intermediate relay KA2, and is used to control the first intermediate relay KA1 to conduct when the stop button SB3 is pressed, so that the time relay KS is energized and the time relay KS starts timing; during the timing process, the normally open contact of the time relay KS is closed to control the start controller CPS to maintain the slurry pump 09 to continue running.

[0037] In this embodiment, the time relay KS is connected to the start button SB2 and the start controller CPS. When the flushing time is reached, the normally closed contact of the time relay KS is disconnected, the start controller CPS loses power, the normally open contact of the start controller CPS is disconnected, and the slurry pump system stops flushing. That is, the time relay KS is used to control the start and end of the flushing cycle to ensure that the flushing process is completed within the predetermined time.

[0038] In some embodiments, the slurry pump system also includes: a fifth intermediate relay KA5 and a sixth intermediate relay KA6; the fifth intermediate relay KA5 is connected to the second intermediate relay KA2, and is used to energize the fifth intermediate relay KA5 when the second intermediate relay KA2 loses power, and at the same time, the normally open contact of the fifth intermediate relay KA5 is closed to close the flushing water control valve 04; the sixth intermediate relay KA6 is connected to the second intermediate relay KA2, and is used to control the normally closed contact of the sixth intermediate relay KA6 to be opened after the flushing water control valve 04 is completely closed.

[0039] In this embodiment, if Figure 1 As shown, the sixth intermediate relay KA6 is connected to the fifth intermediate relay KA5, so that after the normally closed contact of the sixth intermediate relay KA6 is disconnected, the fifth intermediate relay KA5 loses power and the flushing water control valve 04 is closed, and the slurry pump system stops flushing.

[0040] In some embodiments, Figure 1 As shown, the slurry pump system also includes a slurry pump control valve limit switch SQ1 and a flushing water control valve limit switch SQ2. The slurry pump control valve limit switch SQ1 is connected to the slurry pump control valve 06 and the fourth intermediate relay KA4, respectively, for detecting the state of the slurry pump control valve 06, that is, whether it is fully open or fully closed, and feeding back the state information to the system in the form of an electrical signal. The flushing water control valve limit switch SQ2 is connected to the flushing water control valve 04 and the sixth intermediate relay KA6, respectively, for detecting the state of the flushing water control valve 04, that is, whether it is fully open or fully closed, and feeding back the state information to the system in the form of an electrical signal.

[0041] In some embodiments, the slurry pump system further includes: a fuse FU; when the operating current of the slurry pump system exceeds a set value, the internal fuse of the fuse FU melts, and is used to cut off the circuit when the current is too large to protect the circuit from damage due to overload or short circuit.

[0042] In some embodiments, the slurry pump system also includes: an isolating switch QA and a power supply 11; the isolating switch QA is connected to the power supply 11 and the slurry pump 09, respectively, and is used to electrically isolate the power supply 11 from the slurry pump 09 system when flushing the slurry pump 09 and its pipeline.

[0043] In this embodiment, the power supply 11 supplies power to the slurry pump system.

[0044] In some embodiments, the slurry pump system further includes: an emergency stop button; the emergency stop button is connected to the start button SB2 and is used to manually control the stop of the system.

[0045] In some embodiments, the slurry pump system also includes: a power indicator light WH, a stop indicator light GN and an operation indicator light RD; the power indicator light WH is connected to the fuse to display the power-on status of the system; the stop indicator light GN is connected to the start controller to display that the system is in a stopped state; the operation indicator light RD is connected in parallel with the stop indicator light GN to display that the system is in an operating state.

[0046] In this embodiment, the power indicator light WH is a white signal light, the stop indicator light GN is a green signal light, and the run indicator light RD is a red signal light.

[0047] In some implementations, such as Figure 2 As shown, the slurry pump system also includes: a float valve 02 and a flushing water inlet pipe 01; the float valve 02 is arranged inside the flushing water tank 03 and connected to the flushing water inlet pipe 01, and is used to store flushing water for flushing the slurry pump 09 and its pipeline. When the water level of the flushing water tank 03 reaches the target water level, the float valve 02 closes the valve, and when the water level of the flushing water tank 03 does not reach the target water level, the float valve 02 opens the valve to realize automatic replenishment of flushing water.

[0048] In summary, the slurry pump and its associated pipeline self-flushing control system and control method provided by the utility model have the following beneficial effects:

[0049] The utility model provides a slurry pump and its associated pipeline self-flushing control system and control method, which solves the consolidation problem during the shutdown period of the slurry pump that needs to be started and stopped periodically. It automatically runs after the pump is stopped and automatically stops after the flushing is completed, without adding additional operation steps. It has the characteristics of simple operation, low cost, easy installation and strong practicality. The utility model is suitable for slurry pumps and their associated pipelines controlled by traditional relays, and the method can be promoted and applied to the flushing of other slurry pump pipeline systems.

[0050] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description, such as changing relay control to PLC control. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A self-flushing slurry pump system, comprising: Slurry pump, slurry storage tank, inlet pipe, outlet pipe, flushing water tank, flushing water control valve, flushing water pipe, slurry pump control valve, stop button, first intermediate relay and second intermediate relay; characterized in that, The flushing water control valve is arranged on a flushing water pipe connected to the flushing water tank, and is used to flush the slurry pump, the inlet pipe and the outlet pipe when the flushing water control valve is opened; The slurry pump is connected to the outlet pipe and is used for conveying slurry; The stop button is connected to the first intermediate relay and the second intermediate relay respectively, and is used to control the first intermediate relay to be powered on, closed or opened; The slurry pump control valve is arranged on the inlet pipe connected to the slurry storage tank and is connected to the second intermediate relay, and is used to control the slurry in the slurry storage tank to enter the inlet pipe; The second intermediate relay is connected to the flushing water control valve and the slurry pump control valve respectively, and is used to close and conduct the second intermediate relay when the stop button is pressed, so as to control the slurry pump control valve to close and the flushing water control valve to open.

2. The slurry pump system according to claim 1, characterized in that: Also includes: A start controller, a start button, a third intermediate relay and a fourth intermediate relay; The startup controller is connected to the slurry pump and is used to control the operating state of the slurry pump; The start button is connected to the start controller and is used to close the normally open contact of the start controller when the start button is pressed to start the slurry pump. The third intermediate relay is connected to the start button and is used to control the third intermediate relay to be energized when the start button is activated, so that the normally open contact of the third intermediate relay is closed to open the slurry pump control valve; The fourth intermediate relay is connected to the third intermediate relay, and is used to control the fourth intermediate relay to be energized after the slurry pump control valve is opened, the normally closed contact of the fourth intermediate relay is disconnected, and the third intermediate relay is de-energized, so that the slurry pump control valve remains in the fully open valve position, and the slurry pump operates normally.

3. The slurry pump system according to claim 2, characterized in that: Also includes: Time relay; The time relay is respectively connected to the stop button, the start controller, the first intermediate relay and the second intermediate relay, and is used to control the first intermediate relay to conduct when the stop button is pressed, so that the time relay is energized and the time relay starts timing; during the timing process, the normally closed contacts of the time relay remain closed to control the start controller to maintain the continued operation of the slurry pump.

4. The slurry pump system according to claim 1, characterized in that: Also includes: a fifth intermediate relay and a sixth intermediate relay; The fifth intermediate relay is connected to the second intermediate relay, and is used for energizing the fifth intermediate relay when the second intermediate relay loses power, and at the same time, the normally open contact of the fifth intermediate relay is closed to close the flushing water control valve; The sixth intermediate relay is connected to the second intermediate relay and is used to close the normally closed contact of the sixth intermediate relay after the flushing water control valve is completely closed, while the fifth intermediate relay loses power.

5. The slurry pump system according to claim 2, characterized in that: Also includes: Fuse; When the operating current of the slurry pump system exceeds a set value, the internal fuse of the fuse melts, so as to cut off the circuit when the current is too large.

6. The slurry pump system according to claim 1, characterized in that: Also includes: Isolating switch and power supply; The isolating switch is connected to the power supply and the slurry pump respectively, and is used to electrically isolate the power supply from the slurry pump system when the slurry pump and its pipeline are flushed.

7. The slurry pump system according to claim 2, characterized in that: Also includes: Emergency stop button; The emergency stop button is connected to the start button and is used to manually control the stop of the system.

8. The slurry pump system according to claim 5, characterized in that: Also includes: Power indicator light, stop indicator light and operation indicator light; The power indicator light is connected to the fuse and is used to display the system power-on status; The stop indicator light is connected to the start controller and is used to indicate that the system is in a stopped state; The running indicator light is connected in parallel with the stop indicator light and is used to display that the system is in a running state.

9. The slurry pump system according to claim 1, characterized in that: Also includes: Float valve and flushing water inlet pipe; The float valve is arranged inside the flushing water tank and connected to the flushing water inlet pipe, and is used to store flushing water for flushing the slurry pump and its pipeline. When the water level in the water tank reaches the target water level, the float valve is closed. When the water level in the water tank does not reach the target water level, the float valve is opened to realize automatic replenishment of flushing water.

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