Method and equipment for judging and clearing blockage of sludge plunger pump

Abstract

The invention discloses a sludge plunger pump blockage judgment and blockage clearing method, and relates to the field of sludge plunger pumps. Comprising the following steps: setting rated pressure value data and operation data in sludge plunger pump equipment; monitoring whether an in-place signal of the position of a piston in the sludge plunger pump is within a preset time or not; when the piston position in-place signal is not monitored within the preset time, whether the pressure value of a pipeline in the sludge plunger pump meets the blockage clearing requirement or not is detected; and when the pressure value of the pipeline is smaller than the threshold value, counting the number of times that the main cylinder is not in place and counting overpressure, and starting a film injection device to start a blockage clearing process. According to the invention, through real-time monitoring and a rapid feedback mechanism, the blockage condition can be rapidly identified and responded, so that the downtime and the maintenance cost caused by blockage are reduced, over-accurate data monitoring and preset threshold judgment are realized, equipment faults caused by blockage are reduced, manual intervention is reduced through automatic blockage judgment and blockage clearing processes, and the working efficiency is improved. And the intelligent level of maintenance work is improved.

Description

Technical Field

[0001] The present invention relates to the field of sludge piston pumps, and particularly to a method and device for judging and clearing blockages of a sludge piston pump. Background Art

[0002] In the field of sludge treatment, the development of sludge conveying technology has evolved from simple to complex. Currently, the main sludge conveying methods include belt conveyors, screw conveyors, and piston pumps. Among them, piston pumps have been widely used in sludge treatment systems due to their advantages such as compact structure, high rated pressure, and easy flow regulation. The working principle of a piston pump is to use the reciprocating motion of a piston in a cylinder block to change the volume of a sealed cavity, thereby achieving the conveyance of sludge. The operating state of the piston pump is judged by proximity switch signals to determine whether the piston is in place, which improves the accuracy and reliability of conveyance.

[0003] Although piston pumps have obvious advantages in sludge treatment systems, there are still some technical deficiencies in their actual applications. When designing piston pumps, there are strict requirements for the moisture content of sludge. However, the actual properties of sludge often deviate from the design requirements, resulting in the piston not being in place during reciprocating motion, which in turn affects the continuity and efficiency of sludge conveyance. In addition, after long-term operation, sludge may accumulate in the conveyance cavity, making it impossible for hydraulic oil to push the conveyance piston to the proximity switch position, resulting in the inability to carry out the conveyance process normally and requiring manual blockage clearing. This not only causes waste of manpower but also seriously affects the sludge conveyance efficiency. In response to these problems, this patent proposes a method for judging and clearing blockages of a sludge piston pump, aiming to solve these deficiencies in the prior art, improve the efficiency and automation level of the sludge treatment system, reduce manual intervention, and lower the operating cost. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is to intelligently judge whether the pump is blocked and automatically start the blockage clearing process by real-time monitoring of the pressure value and the in-place signal of the piston position in the sludge piston pump, combined with preset threshold values and time parameters.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a method for determining and clearing blockages in a sludge piston pump, which includes setting the rated pressure value data and operating data in the sludge piston pump equipment; monitoring whether the in-place signal of the piston position in the sludge piston pump is within a preset time; when the in-place signal of the piston position is not detected within the preset time, detecting whether the pipeline pressure value in the sludge piston pump meets the requirements for clearing blockages; when the pipeline pressure value is less than the threshold, counting the number of times the main cylinder fails to reach the position and counting the overpressure, and starting the film injector to start the blockage clearing process.

[0008] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: the rated pressure value data and operating data in the sludge piston pump equipment include parameters such as the oil pressure, flow rate, and speed of the sludge piston pump during actual operation, which are collected in real time by sensors installed on the pump.

[0009] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: the preset time refers to the time required for the main cylinder delivery piston to complete a reciprocating motion after the upper computer issues a main cylinder retraction command under normal working conditions.

[0010] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: the in-place signal of the piston position in the sludge piston pump is whether the main cylinder delivery piston retracts to the switch detection point after the upper computer issues a main cylinder retraction command, and it is monitored by installing sensors at the switch position of the sludge piston pump.

[0011] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: the pressure value in the sludge piston pump is monitored in real time by installing a pressure sensor in the sludge piston pump.

[0012] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: when the in-place signal of the piston position is not detected within the preset time, the logic for detecting whether the pressure value in the sludge piston pump meets the requirements for clearing blockages is that when the pressure value is greater than or equal to the threshold, it is determined that there is a blockage; when the pressure value is less than the threshold, the film injector is started to start the blockage clearing process.

[0013] As a preferred solution of the method for determining and clearing blockages in the sludge piston pump of the present invention, among them: the film injector is arranged at the sludge pipeline at the outlet of the piston pump and is started and closed according to the preset time when the sludge is transported normally; the blockage clearing process of starting the film injector is that when the first main cylinder in-place signal is not detected and the pipeline pressure value is less than the threshold, the number of times the first main cylinder fails to reach the position is recorded once, and the film injector is started. The second main cylinder pushes the sludge and drives the sludge forward through the water film formed on the inner wall of the pipeline by the film injector.

[0014] As a preferred solution of the sludge plunger pump blockage determination and blockage clearing method of the present invention, the following is the case: after the film injector is started, the blockage clearing logic is as follows: when the second main cylinder completes a sludge push, the in-place signal of the monitoring delivery piston is detected again to see if it is within the preset time. If it is within the preset time, the number of times the first main cylinder is not in place is reset to zero. If it is greater than the preset time, the number of times the first main cylinder is not in place is recorded as 1 again; at this time, the oil pressure threshold for shielding stops equipment protection, allowing the oil pressure to reach and exceed the threshold to reach the maximum value, increasing the output of the plunger pump. When the second main cylinder makes a second sludge push, the in-place signal of the monitoring delivery piston is detected again to see if it is within the preset time. If it is within the preset time, the number of times the first main cylinder is not in place is reset to zero, and the number of overpressure times is recorded as 1. If it is greater than the preset time, the number of times the first main cylinder is not in place is recorded as 1 again, and the number of overpressure times is recorded as 1; when the second main cylinder makes a third sludge push, the in-place signal of the monitoring delivery piston is detected again to see if it is within the preset time. If it is greater than the preset time, the number of times the first main cylinder is not in place is recorded as 1 again, and the number of overpressure times is recorded as 1. This step is repeatedly detected; if the number of times the first main cylinder is not in place reaches 4 times, the equipment stops; if the number of overpressure times reaches 5 times, the equipment issues a blockage alarm and stops.

[0015] As a preferred solution of the sludge plunger pump blockage determination and blockage clearing method of the present invention, the following is the case: the pressure of the sludge delivery pipeline being higher than the threshold has the highest priority, and it is directly determined as blocked under any circumstances; the number of overpressure times is set to be automatically cleared every hour.

[0016] In a second aspect, an embodiment of the present invention provides a sludge plunger pump blockage clearing device, which includes a plunger pump, including a first main cylinder and a second main cylinder. At the other ends of the first main cylinder and the second main cylinder, there is a water tank. At the other end of the water tank, there is a first delivery cylinder and a first delivery cylinder. Inside the first delivery cylinder and the first delivery cylinder, there are a first delivery cylinder piston and a second delivery cylinder piston respectively. At the front ends of the first delivery cylinder piston and the second delivery cylinder piston, there is also a hopper. At the bottom of the hopper, there is a distribution valve, and a sludge pipeline pressure gauge is also provided on the side of the hopper; a stirring mechanism is built inside the hopper; a swing cylinder mechanism is also provided between the first delivery cylinder piston and the second delivery cylinder piston and the hopper.

[0017] The beneficial effects of the present invention are as follows: Through real-time monitoring and a rapid feedback mechanism, it can quickly identify and respond to blockage situations, thereby reducing downtime and maintenance costs caused by blockages and improving efficiency. At the same time, through precise data monitoring and preset threshold judgments, the operating reliability of the sludge plunger pump is enhanced, and equipment failures caused by blockages are reduced. In addition, the automated blockage determination and blockage clearing process reduces manual intervention and improves the intelligent level of maintenance work. Finally, timely blockage handling reduces excessive wear of the sludge plunger pump caused by blockages, extends the service life of the equipment, and has significant economic benefits and practical value. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a flowchart of the method for judging and clearing the blockage of the sludge piston pump;

[0020] Figure 2 It is the overall logic diagram of the method for judging and clearing the blockage of the sludge piston pump;

[0021] Figure 3 It is the structural diagram of the equipment of the method for judging and clearing the blockage of the sludge piston pump. Specific Embodiments

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the drawings of the specification.

[0023] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from this description. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0024] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that mutually excludes other embodiments.

[0025] Embodiment 1

[0026] Refer to Figures 1 to 2 , which is the first embodiment of the present invention. This embodiment provides a method for judging and clearing the blockage of a sludge piston pump, including

[0027] S1: Set the rated pressure value data and operating data in the sludge piston pump equipment;

[0028] Specifically, the rated pressure value data and operating data in the sludge piston pump equipment include parameters such as the oil pressure, flow rate, and speed during the actual operation of the sludge piston pump, which are collected in real time by sensors installed on the pump.

[0029] It should be noted that the main cylinder of the plunger pump of this equipment is pushed by hydraulic oil, and the pressure of the overflow valve is set to 18 Mpa. To prevent pipeline blockage and equipment damage caused by long-term high-pressure operation of the equipment, in the automatic operation logic of the equipment, the oil pressure threshold is set to 14 Mpa, and when it reaches 14 Mpa, the equipment stops running.

[0030] S2: Monitor whether the in-place signal of the piston position in the sludge plunger pump is within the preset time;

[0031] Specifically, the preset time refers to the time required for the main cylinder conveying piston to complete a reciprocating motion after the upper computer issues a main cylinder retraction instruction under normal working conditions.

[0032] It should be noted that when the upper computer issues a main cylinder retraction instruction, if the in-place signal of the main cylinder conveying piston is not detected within 30 s, the pressure of the sludge conveying pipeline and the oil pressure will be added to the determination.

[0033] S3: When the in-place signal of the piston position is not detected within the preset time, detect whether the pipeline pressure value in the sludge plunger pump meets the requirements for blockage removal;

[0034] Specifically, the in-place signal of the piston position in the sludge plunger pump is whether the main cylinder conveying piston retracts to the switch detection point after the upper computer issues a main cylinder retraction instruction, and it is monitored by installing a sensor at the switch position of the sludge plunger pump.

[0035] Specifically, the pressure value in the sludge plunger pump is monitored in real time by installing a pressure sensor in the sludge plunger pump.

[0036] S4: When the pipeline pressure value is less than the threshold, count the number of times the main cylinder is not in place and the overpressure count, and start the film injector to start the blockage removal process.

[0037] Specifically, when the in-place signal of the piston position is not detected within the preset time, the logic for detecting whether the pressure value in the sludge plunger pump meets the requirements for blockage removal is as follows:

[0038] When the pressure value is greater than or equal to the threshold, it is determined to be blocked;

[0039] When the pressure value is less than the threshold, start the film injector to start the blockage removal process.

[0040] Preferably, when the pressure value is detected to be less than the threshold, starting the film injector for blockage removal has the advantage that the water film formed by the film injector on the inner wall of the pipeline can drive the sludge forward. This is an innovative physical blockage removal method that avoids environmental pollution and cost increase that may be caused by using chemical agents. This method can perform blockage removal without stopping the equipment, reduce downtime, and effectively improve production efficiency.

[0041] Specifically, after the film injector is started, the blockage removal logic is as follows:

[0042] When the second master cylinder completes one sludge pushing, the in-place signal of the monitoring transfer piston is detected again to check if it is within the preset time. If it is within the preset time, the number of times the first master cylinder is not in place is reset to zero. If it is greater than the preset time, the number of times the first master cylinder is not in place is incremented by 1 again;

[0043] At this time, the equipment protection of the shielded oil pressure threshold is stopped, allowing the oil pressure to reach the maximum value beyond the threshold, increasing the output of the plunger pump. When the second master cylinder pushes the sludge for the second time, the in-place signal of the monitoring transfer piston is detected again to check if it is within the preset time. If it is within the preset time, the number of times the first master cylinder is not in place is reset to zero, and the number of overpressure times is incremented by 1. If it is greater than the preset time, the number of times the first master cylinder is not in place is incremented by 1 again, and the number of overpressure times is incremented by 1;

[0044] When the second master cylinder pushes the sludge for the third time, the in-place signal of the monitoring transfer piston is detected again to check if it is within the preset time. If it is greater than the preset time, the number of times the first master cylinder is not in place is incremented by 1 again, and the number of overpressure times is incremented by 1. This step is repeatedly detected;

[0045] If the number of times the first master cylinder is not in place reaches 4 times, the equipment stops;

[0046] If the number of overpressure times reaches 5 times, the equipment issues a blockage alarm and stops.

[0047] Specifically, the pressure of the sludge transfer pipeline being higher than the threshold has the highest priority and is directly determined as a blockage in any case; the number of overpressure times is set to automatically reset to zero every hour.

[0048] It should be noted that the injection film device of this equipment is set to start for 3 minutes every 20 minutes when the sludge transfer is normal.

[0049] It should be noted that the pressure setting of the overflow valve of this equipment is 16 Mpa, that is, the oil pressure can reach a maximum of 16 Mpa.

[0050] Preferably, by continuously detecting the in-place signal and pressure value of the piston, combined with the records of the number of times not in place and the number of overpressure times, the blockage clearing strategy can be dynamically adjusted. This cyclic detection mechanism can not only continuously monitor the blockage situation but also automatically stop the equipment when necessary to prevent equipment damage and further production losses.

[0051] Preferably, when the pressure of the sludge transfer pipeline is higher than the threshold, it is directly determined as a blockage. This high-priority determination mechanism can quickly respond to serious blockage situations to ensure equipment safety and production continuity.

[0052] In summary, through the combination of real-time data monitoring, preset threshold judgment, and automated blockage clearing process, the present invention not only improves the operation efficiency and reliability of the sludge plunger pump but also reduces the maintenance cost, extends the equipment life, and has significant economic benefits and practical value.

[0053] Example 2

[0054] Referring to the figure, this is the second embodiment of the present invention. This embodiment provides a method for judging and clearing blockages in a sludge piston pump. To verify the beneficial effects of the present invention, it is compared with the traditional blockage judgment method based on pressure thresholds.

[0055] The test objects are two identical sludge piston pump systems, which are respectively labeled as System A (using the method of the present invention) and System B (using the traditional method). Both systems are equipped with the same sensors for monitoring oil pressure, flow rate, piston position, and pipeline pressure. The sludge sample is the dewatered sludge from a municipal wastewater treatment plant, with a moisture content of 75%. By adjusting and adding a certain amount of water, different concentrations of sludge are simulated to test the applicability of the method under different working conditions. The preset time is determined according to a complete reciprocating motion cycle of the sludge piston pump in the normal working state and is set to 3 seconds. The pressure threshold is set to 2.5 MPa, which is determined based on empirical values and equipment safety limits.

[0056] The specific implementation process of System A is as follows: First, set the preset time of System A to 3 seconds and the pressure threshold to 2.5 MPa. During the operation of System A, the oil pressure, flow rate, piston position, and pipeline pressure data of the sludge piston pump are collected in real time. After the host computer issues the main cylinder retraction command, the system starts timing. If the piston position in-place signal is detected within 3 seconds, it is considered that the system is operating normally. If the piston position in-place signal is not detected within 3 seconds, the pipeline pressure value is immediately detected. If the pipeline pressure value is greater than or equal to 2.5 MPa, it is determined that there is a blockage, and the system stops running. If the pipeline pressure value is less than 2.5 MPa, the film injector is started to begin the blockage clearing process. The count of the number of times the main cylinder does not reach the in-place position starts to accumulate, and at the same time, the film injector is started. The second main cylinder pushes the sludge, and the film injector forms a water film on the inner wall of the pipeline to reduce the viscosity of the sludge and promote its flow. After the second main cylinder completes one sludge push, the piston position in-place signal is detected again. If the in-place signal is detected within the preset time, the count of the number of times the main cylinder does not reach the in-place position is reset to zero. If the in-place signal is not detected, the count of the number of times the main cylinder does not reach the in-place position is incremented by 1, and the oil pressure threshold protection is shielded to allow the oil pressure to reach the maximum value to enhance the blockage clearing strength. Repeat this process, and at most, the second main cylinder is allowed to make three pushes. If the in-place signal is still not detected after three pushes, the count of the number of times the main cylinder does not reach the in-place position and the number of overpressure times continue to accumulate. When the count of the number of times the main cylinder does not reach the in-place position reaches 4 times or the number of overpressure times reaches 5 times, the system stops running and issues an alarm.

[0057] The implementation process of System B is relatively simple: The pipeline pressure is monitored in real time. When the pipeline pressure exceeds the set threshold (2.5 MPa), it is determined that there is a blockage, and the system stops running and issues an alarm.

[0058] To simulate different degrees of blockage, different amounts of solid particles (such as sand and gravel) were artificially added to the sludge conveying pipeline to increase the sludge viscosity and resistance. During the test process, the operating data of System A and System B under different degrees of blockage were recorded, including the number of blockage occurrences, blockage clearing time, system downtime, etc.

[0059] The following data records the performance indicators of System A and System B under different sludge concentrations.

[0060]

[0061] As can be seen from the above table data, the number of blockage occurrences, blockage clearing time, and system downtime of System A using the method of the present invention are significantly lower than those of System B using the traditional method under various sludge concentrations. For example, when the sludge concentration is 80%, the number of blockage occurrences of System A is 4 times, the blockage clearing time is 25 seconds, and the system downtime is 15 seconds; while the number of blockage occurrences of System B is 7 times, the blockage clearing time is 45 seconds, and the system downtime is 40 seconds. This shows that the method of the present invention can effectively reduce the occurrence of blockages, shorten the blockage clearing time, and reduce the system downtime, thereby improving the sludge treatment efficiency.

[0062] The advantages of the method of the present invention are mainly reflected in the following aspects: First, the method of the present invention not only considers the pipeline pressure, but also combines the piston position in-place signal and the preset time, and can more accurately judge the occurrence of blockages. The traditional blockage determination method based on pressure thresholds is prone to misjudgment. For example, when the sludge concentration is high, even if there is no blockage, the pipeline pressure may exceed the threshold, resulting in the system shutting down erroneously. Second, the method of the present invention introduces a film injector and a multi-stage blockage clearing strategy, and can more effectively remove blockages. When a blockage is detected, the system will start the film injector and form a water film on the inner wall of the pipeline to reduce the sludge viscosity and promote its flow. At the same time, the system will gradually increase the blockage clearing intensity according to the degree of blockage until the blockage is cleared. Finally, the method of the present invention can detect the signs of blockages earlier by real-time monitoring of parameters such as oil pressure, flow rate, and speed, and take preventive measures before the blockage occurs by combining the preset time and the piston position in-place signal.

[0063] In contrast, the traditional blockage determination method based on pressure thresholds has many deficiencies. It can only passively respond to the occurrence of blockages and cannot give early warnings and preventions. In addition, the traditional blockage clearing methods usually require manual intervention, with low efficiency and high labor intensity. The innovation of the method of the present invention lies in that it combines the piston position signal, the preset time, and the pipeline pressure value to achieve more accurate blockage determination, and realizes more effective automatic blockage clearing through the film injector and the multi-stage blockage clearing strategy. The application of the method of the present invention can significantly improve the sludge treatment efficiency, reduce the operating cost, and reduce the manual intervention.

[0064] Example 3

[0065] Refer to Figure 3 , which is the third embodiment of the present invention. This embodiment provides a clogging removal device for a sludge plunger pump, including,

[0066] The plunger pump 100 includes a first main cylinder 101 and a second main cylinder 102 provided at one end of the plunger pump 100. A water tank 103 is provided at the other ends of the first main cylinder 101 and the second main cylinder 102. A first delivery cylinder 104 and a first delivery cylinder 105 are provided at the other end of the water tank 103. A first delivery cylinder piston 106 and a second delivery cylinder piston 107 are respectively provided inside the first delivery cylinder 104 and the first delivery cylinder 105. A sub-cylinder 108 is provided at the front ends of the first delivery cylinder piston 106 and the second delivery cylinder piston 107. A distribution cylinder 109 is provided at the other end of the sub-cylinder 108, and a hopper 110 is further provided at the top of the distribution cylinder 109;

[0067] The plunger pump 100 further includes a sludge pipeline 111 provided at the other end of the plunger pump 100. A sludge pipeline pressure gauge 112 and an injection film device 113 are provided on the sludge pipeline 111.

[0068] It should be noted that a proximity switch is installed at the position of the plunger pump water tank 103 to detect the position of the delivery cylinder piston.

[0069] During the sludge transportation process, the hydraulic oil station builds up oil pressure to push one main cylinder forward and one main cylinder backward. The main cylinder moving backward drives the delivery piston to retreat, creating a negative pressure in the delivery cavity to suck the sludge into the cavity. The main cylinder moving forward drives the delivery piston to push the sludge into the sludge pipeline. When the proximity switch detects the retreating delivery piston, at this time, the retreating main cylinder advances, driving the delivery piston to push the sludge into the sludge pipeline, and the advancing piston retreats to suck the sludge into the cavity, repeating in a cycle.

[0070] Suction stage: The first main cylinder 101 and the second main cylinder 102 of the plunger pump reciprocate under the push of hydraulic oil. When the plunger pulls backward, a negative pressure is generated, causing the sludge to be sucked into the cylinder body of the plunger pump.

[0071] Compression stage: The plunger pushes forward, compressing the sludge and increasing its pressure to prepare for transporting it into the pipeline. During this process, a first delivery cylinder piston 106 and a second delivery cylinder piston 107 are respectively provided inside the first delivery cylinder 104 and the first delivery cylinder 105, and they move under the push of the plunger to further compress the sludge.

[0072] Discharge stage: During the forward movement of the plunger, the sludge is pushed out of the cylinder body and transported to the designated location through the outlet pipe. A secondary cylinder 108 is provided at the front ends of the first delivery cylinder piston 106 and the second delivery cylinder piston 107, and a distribution cylinder 109 is provided at the other end of the secondary cylinder 108. These components work together to ensure the smooth discharge of the sludge.

[0073] Return stroke stage: The plunger is pulled back again,

[0074] ready for the next round of suction. At the same time, the plunger pump 100 further includes a sludge pipe 111 provided at the other end of the plunger pump 100. A sludge pipe pressure gauge 112 and a film injector 113 are provided on the sludge pipe 111 to monitor and control the sludge transportation process.

[0075] It should be noted that in order to prevent pipeline blockage, a film injector 113 and a sludge pipe pressure gauge 112 are installed on the sludge pipe 111 of the equipment. The film injector starts for 3 minutes every 20 minutes when the sludge transportation is normal to form a water film to reduce the transportation pressure. If the pressure of the sludge transportation pipeline is higher than 1.2 Mpa, the equipment will directly determine that it is blocked and stop running. If the pressure is lower than 1.2 Mpa, the equipment will try to solve the blockage problem by increasing the use of the film injector and raising the oil pressure.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A method for judging clogging and removing clogging of a sludge plunger pump, characterized in that: including, setting the rated pressure value data and operation data in the sludge plunger pump equipment; monitoring whether the in-place signal of the piston position in the sludge plunger pump is within the preset time; when the in-place signal of the piston position is not detected within the preset time, detecting whether the pipeline pressure value in the sludge plunger pump meets the requirements for blockage removal; when the pipeline pressure value is less than the threshold, counting the number of times the main cylinder fails to reach the position and the overpressure count, and starting the film injector to start the blockage removal process.

2. The sludge plunger pump blockage determination and blockage removal method according to claim 1, characterized in that: The rated pressure value data and operation data in the sludge plunger pump equipment include parameters such as oil pressure, flow rate, and speed during the actual operation of the sludge plunger pump, which are collected in real time by sensors installed on the pump.

3. The sludge plunger pump blockage determination and blockage removal method according to claim 2, characterized in that: The preset time refers to the time required for the main cylinder delivery piston to complete a reciprocating motion after the upper computer issues a main cylinder retraction command under normal working conditions.

4. The sludge plunger pump blockage determination and blockage removal method according to claim 3, characterized in that: The in-place signal of the piston position in the sludge plunger pump is whether the main cylinder delivery piston retracts to the switch detection point after the upper computer issues a main cylinder retraction command, and it is monitored by installing sensors at the switch position of the sludge plunger pump.

5. The sludge plunger pump blockage determination and blockage removal method according to claim 4, characterized in that: The pressure value in the sludge plunger pump is monitored in real time by installing a pressure sensor in the sludge plunger pump to monitor the pressure value in the pump.

6. The sludge plunger pump blockage determination and blockage removal method according to claim 5, characterized in that: When the in-place signal of the piston position is not detected within the preset time, the logic for detecting whether the pressure value in the sludge plunger pump meets the requirements for blockage removal is when the pressure value is greater than or equal to the threshold, it is determined as blocked; when the pressure value is less than the threshold, start the film injector to start the blockage removal process.

7. The sludge plunger pump blockage determination and blockage removal method according to claim 6, characterized in that: The film injector is arranged at the sludge pipeline at the outlet of the plunger pump, and is started and closed according to the preset time when the sludge transportation is normal; The blockage removal process of starting the film injector is that when the first main cylinder in-place signal is not detected and the pipeline pressure value is less than the threshold, record the number of times the first main cylinder fails to reach the position as 1 time, and start the film injector. The second main cylinder pushes the sludge, and the water film formed by the film injector on the inner wall of the pipeline drives the sludge forward.

8. The sludge plunger pump blockage determination and blockage removal method according to claim 7, characterized in that: After the film injector is started, the blockage removal logic is: when the second main cylinder completes one sludge push, detect again whether the in-place signal of the conveying piston is within the preset time. If it is within the preset time, the number of times the first main cylinder fails to reach the position is reset to zero. If it is greater than the preset time, record the number of times the first main cylinder fails to reach the position as 1 time again; At this time, the shielding oil pressure threshold stops equipment protection, allowing the oil pressure to reach and exceed the threshold to the maximum value, increasing the output of the plunger pump. When the second main cylinder pushes the secondary sludge, the in-place signal of the monitoring conveying piston is detected again to see if it is within the preset time. If it is within the preset time, the number of times the first main cylinder is not in place is reset to zero, and the number of overpressure times is recorded as 1. If it is greater than the preset time, the number of times the first main cylinder is not in place is recorded as 1 again, and the number of overpressure times is recorded as 1; When the second main cylinder pushes the sludge for the third time, the in-place signal of the monitoring conveying piston is detected again to see if it is within the preset time. If it is greater than the preset time, the number of times the first main cylinder is not in place is recorded as 1 again, and the number of overpressure times is recorded as 1. This step is repeatedly detected; If the number of times the first main cylinder is not in place reaches 4 times, the equipment stops; If the number of overpressure times reaches 5 times, the equipment issues a blockage alarm and stops.

9. The sludge plunger pump blockage determination and blockage clearing method according to claim 8, characterized in that: The pressure of the sludge conveying pipeline being higher than the threshold has the highest priority and is directly determined to be blocked under any circumstances; The number of overpressure times is set to be automatically cleared every hour.

10. A clogging removal device for a sludge piston pump, based on the sludge piston pump clogging determination and removal method according to any one of claims 1 to 7, characterized in that: It further includes, A plunger pump (100), including a first main cylinder (101) and a second main cylinder (102) provided at one end of the plunger pump (100). The other ends of the first main cylinder (101) and the second main cylinder (102) are provided with a water tank (103). The other end of the water tank (103) is provided with a first conveying cylinder (104) and a first conveying cylinder (105). The interiors of the first conveying cylinder (104) and the first conveying cylinder (105) are respectively provided with a first conveying cylinder piston (106) and a second conveying cylinder piston (107). The front ends of the first conveying cylinder piston (106) and the second conveying cylinder piston (107) are provided with an auxiliary cylinder (108). The other end of the auxiliary cylinder (108) is provided with a distribution cylinder (109), and a hopper (110) is further provided at the top of the distribution cylinder (109); The plunger pump (100) further includes a sludge pipeline (111) provided at the other end of the plunger pump (100). A sludge pipeline pressure gauge (112) and an injector (113) are provided on the sludge pipeline (111).

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