A multi-modal filter press feed pump

Abstract

The utility model provides a kind of multi-modal filter press feed pump, it includes first oil supply mechanism, second oil supply mechanism and execution component, the execution component includes hydraulic cylinder and piston cylinder;Hydraulic piston in hydraulic cylinder is connected with the working piston in the piston cylinder;The first oil supply mechanism includes first oil pump and first motor;The second oil supply mechanism includes second oil pump and second motor;The utility model is by setting two sets of oil supply mechanism, especially using two kinds of power motor of one big and one small, three kinds of working mode can be formed thereby, i.e. when needing large flow oil delivery, two motors work simultaneously;When needing medium flow oil delivery, medium power input, among them, high-power motor works, small-power motor stops;When needing small flow oil delivery, relatively small power input, small-power motor works, high-power motor stops;To meet the power input demand of different working conditions, avoid the waste of electric power energy simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of pump technology for filter presses, and in particular to a multimodal filter press feed pump. Background Technology

[0002] Currently, filter presses are commonly used solid-liquid separation machines. By applying pressure to a solid-liquid mixture, the liquid material in the mixture is forced to seep out and separate from the solid material. Filter presses are mostly used to process solid-liquid mixtures such as slurry and mud. These materials typically have high viscosity and poor flowability, so a dedicated feed pump is required when using a filter press to pump the material into the machine.

[0003] Due to the significant variations in operating conditions, the amount of input power required for the filter press to operate also varies considerably. Current technologies typically use high-power motors as the power input, which, while meeting the material processing needs, also results in a significant waste of electrical energy. Utility Model Content

[0004] The purpose of this utility model is to provide a feed pump for a multimodal filter press to solve at least one of the above-mentioned technical problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a multimodal filter press feed pump, including a first oil supply mechanism, a second oil supply mechanism, and an actuation component; The actuating component includes a hydraulic cylinder and a piston cylinder; the hydraulic piston in the hydraulic cylinder is connected to the working piston in the piston cylinder. The first oil supply mechanism includes a first oil pump and a first motor; the second oil supply mechanism includes a second oil pump and a second motor. The first oil pump and the second oil pump are respectively connected to the hydraulic cylinder. The first motor and the second motor work simultaneously or selectively to drive the first oil pump and the second oil pump to supply oil to the hydraulic cylinder, and then drive the working piston to reciprocate within the piston cylinder through the hydraulic piston to work.

[0006] Preferably, the first motor and the second motor have different power ratings. That is, one motor is a high-power motor and the other is a low-power motor.

[0007] Preferably, the power of the first motor is 2-10 times that of the second motor.

[0008] This application sets up two oil supply mechanisms, specifically using motors of different power ratings (one large and one small), thereby enabling three operating modes: when a large flow rate and ultra-high power input are required, both motors operate simultaneously; when a medium flow rate and medium power input are required, the large-power motor operates while the small-power motor stops; and when a small flow rate and relatively low power input are required, the small-power motor operates while the large-power motor stops. This satisfies the power input requirements of different operating conditions while avoiding the waste of electrical energy.

[0009] Compared to the use of variable frequency motors in existing technologies, the technical solution of this application has a larger maximum output power, is more suitable for the relatively rough working environment of filter presses, is more durable, and is easier to maintain; and, since the purchase cost of variable frequency motors is usually 3-4 times that of ordinary motors, although this application adds an oil supply mechanism, the manufacturing cost is relatively lower.

[0010] Furthermore, it also includes a hydraulic control system, wherein the first oil pump and the second oil pump are connected to the hydraulic cylinder through the hydraulic control system; The hydraulic control system includes a three-position four-way directional valve, a main oil supply line, and a main oil return line. The first working port and the second working port of the three-position four-way directional valve are respectively connected to the two oil chambers of the hydraulic cylinder through oil lines. The oil inlet and the oil return port of the three-position four-way directional valve are respectively connected to one end of the main oil supply line and the main oil return line.

[0011] Furthermore, the oil outlets of the first oil pump and the second oil pump are respectively connected to the other end of the main oil supply pipeline through the first pipeline and the second pipeline.

[0012] Furthermore, both the first and second pipelines are equipped with check valves to limit the hydraulic oil to flow unidirectionally to the main oil supply pipeline.

[0013] Furthermore, it also includes an overflow pipeline, one end of which is connected to the main oil supply pipeline, and the other end is connected to the oil tank; a pilot overflow valve is installed on the overflow pipeline. When the pressure in the main oil supply pipeline exceeds a set threshold, the pilot overflow valve opens, exporting part of the hydraulic oil in the main oil supply pipeline and returning it to the oil tank.

[0014] Furthermore, the inlets of the first and second oil pumps are respectively connected to the oil tank via oil lines; and the other end of the return oil main line is connected to the oil tank. Preferably, a pressure control valve is installed on the return oil main line to maintain its internal pressure within a reasonable range, thereby ensuring smooth movement of the hydraulic piston.

[0015] Alternatively, the hydraulic control system includes a first hydraulic control system and a second hydraulic control system; the first oil pump and the second oil pump are respectively connected to the hydraulic cylinder through the first hydraulic control system and the second hydraulic control system. That is, without considering cost, two relatively independent hydraulic control systems can also be used to control the first oil pump and the second oil pump to supply oil to the two chambers of the hydraulic cylinder respectively.

[0016] Furthermore, the filter press is horizontal, and the piston cylinder is arranged horizontally; or, the filter press is vertical, and the piston cylinder is arranged vertically.

[0017] Furthermore, the execution component includes a first execution component and a second execution component; The first actuation component includes a first hydraulic cylinder and a first piston cylinder; the first hydraulic piston in the first hydraulic cylinder is connected to the first working piston in the first piston cylinder, and is used to drive the first working piston to reciprocate within the first piston cylinder to work. The second actuation component includes a second hydraulic cylinder and a second piston cylinder; the second hydraulic piston in the second hydraulic cylinder is connected to the second working piston in the second piston cylinder, and is used to drive the second working piston to reciprocate within the second piston cylinder to work. The first rod chamber of the first hydraulic cylinder and the second rod chamber of the second hydraulic cylinder are connected through an intermediate pipeline; the first working port and the second working port of the three-position four-way directional valve are respectively connected to the first rodless chamber of the first hydraulic cylinder and the second rodless chamber of the second hydraulic cylinder through oil circuits. Alternatively, the first rodless chamber of the first hydraulic cylinder and the second rodless chamber of the second hydraulic cylinder are connected through an intermediate pipeline, and the first working port and the second working port of the three-position four-way directional valve are respectively connected to the first rod chamber of the first hydraulic cylinder and the second rod chamber of the second hydraulic cylinder through oil circuits. By changing the working position of the three-position four-way directional valve, oil is alternately supplied to the first hydraulic cylinder and the second hydraulic cylinder, thereby realizing the alternating operation of the first piston cylinder and the second piston cylinder.

[0018] Furthermore, the rodless chamber inside the first piston cylinder is the first working chamber, and a first feed inlet is provided on one side of the first working chamber, and a first discharge outlet is provided on the other side; The rodless chamber inside the second piston cylinder is the second working chamber. A second feed inlet is provided on one side of the second working chamber, and a second discharge outlet is provided on the other side. The first and second inlets are connected to the feed pipeline and are used to feed materials into the first and second working chambers, respectively. The first and second discharge ports are connected to the feed pipeline and are used to convey materials to the filter press through the feed pipeline, respectively.

[0019] Furthermore, a first feed check valve is provided between the first feed inlet and the feed pipeline, for the material in the feed pipeline to pass through the first feed inlet in one direction and enter the first working chamber; A second feed check valve is provided between the second feed inlet and the feed pipeline, so that the material in the feed pipeline can pass through the second feed inlet in one direction and enter the second working chamber.

[0020] Preferably, the first feed inlet and the second feed inlet are connected to the feed pipeline through two feed branches, and the first feed check valve and the second feed check valve are respectively installed on the two feed branches; a main feed inlet is provided in the middle of the feed pipeline.

[0021] Furthermore, a first feed check valve is provided between the first discharge port and the feed pipeline, for the material in the first working chamber to pass through the first discharge port and enter the feed pipeline in one direction; A second feed check valve is provided between the second discharge port and the feed pipeline, so that the material in the second working chamber can pass through the second discharge port and enter the feed pipeline in one direction.

[0022] Preferably, the first discharge port and the second discharge port are connected to the feed pipeline through two feed branches, and the first feed check valve and the second feed check valve are respectively installed on the two feed branches; a main feed port is provided in the middle of the feed pipeline, and the main feed port is connected to the inlet of the filter press through the pipeline.

[0023] Furthermore, the first hydraulic cylinder and the second hydraulic cylinder are provided with a return port on the rod-side or rodless side connected to the oil supply circuit, and the return port is connected to the oil tank through a return pipeline.

[0024] When oil is supplied to one of the first hydraulic cylinder and the second hydraulic cylinder, the other of the first hydraulic cylinder and the second hydraulic cylinder will return the hydraulic oil in its rod chamber or rodless chamber to the oil tank through the return oil line.

[0025] Preferably, a level sensor and a temperature sensor are installed inside the oil tank to monitor the level and temperature of the hydraulic oil in the tank in real time.

[0026] Furthermore, it also includes a controller, which is connected to the first motor, the second motor and the reversing valve respectively, and is used to control the magnitude of the power input, the magnitude of the input oil, and to alternately supply oil to the first hydraulic cylinder and the second hydraulic cylinder, so as to realize the alternating operation of the first piston cylinder and the second piston cylinder.

[0027] Preferably, the piston inside the piston cylinder is connected to a push rod extending from the hydraulic cylinder via a piston rod. More preferably, the piston rod of the piston cylinder and the push rod of the hydraulic cylinder are coaxially connected via a coupling.

[0028] Furthermore, the first execution component and the second execution component are arranged in parallel at intervals.

[0029] By adopting the above technical solution, this utility model has the following beneficial effects: This utility model provides a multi-modal filter press feed pump that, by setting up two oil supply mechanisms and, in particular, employing two motors with different power ratings (one large and one small), can form three working modes: when a large flow rate of oil and a large power input are required, both motors work simultaneously; when a medium flow rate of oil and a medium power input are required, the large-power motor works while the small-power motor stops; and when a small flow rate of oil and a small power input are required, the small-power motor works while the large-power motor stops. This satisfies the power input requirements of different working conditions while avoiding the waste of electrical energy. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the working principle of the filter press feed pump provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the working principle of the filter press feed pump provided in Embodiment 2 of this utility model; Figure 3 This is a front view of the filter press feed pump provided in Embodiment 2 of this utility model; Figure 4 This is a side view of the filter press feed pump provided in Embodiment 2 of this utility model; Figure 5 This is a top view of the filter press feed pump provided in Embodiment 2 of this utility model.

[0032] Figure label: 1-Oil tank; 10-First oil supply mechanism; 11-First oil pump; 15-First motor; 20-Second oil supply mechanism; 21-Second oil pump; 25-Second motor; 30-Three-position four-way directional valve; 31-Main oil supply line; 32-Main oil return line; 33-First pipeline; 34-Second pipeline; 35-Check valve; 36-Overflow pipeline; 37-Pilot overflow valve; 40-Feed pipeline; 50-Feed pipeline; 61-First feed check valve; 62-Second feed check valve; 63-First feed check valve; 64-Second feed check valve; 100-Actuation component; 101-First actuation component; 102-Second actuation component; 103-Intermediate pipeline; 110-Hydraulic cylinder; 111-First hydraulic cylinder; 112-Second hydraulic cylinder; 150-Piston cylinder; 151-First piston cylinder; 152-Second piston cylinder. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will be further explained below with reference to specific embodiments.

[0037] Example 1 like Figure 1As shown, this embodiment provides a multimodal filter press feed pump, including a first oil supply mechanism 10, a second oil supply mechanism 20, and an execution component 100; the execution component 100 includes a hydraulic cylinder 110 and a piston cylinder 150; the hydraulic piston in the hydraulic cylinder 110 is connected to the working piston in the piston cylinder 150. The first oil supply mechanism 10 includes a first oil pump 11 and a first motor 15; the second oil supply mechanism 20 includes a second oil pump 21 and a second motor 25. The first oil pump 11 and the second oil pump 21 are respectively connected to the hydraulic cylinder 110. The first motor 15 and the second motor 25 work simultaneously or selectively to drive the first oil pump 11 and the second oil pump 21 to supply oil to the hydraulic cylinder 110, and then drive the working piston to reciprocate within the piston cylinder 150 through the hydraulic piston to work.

[0038] The power of the first motor 15 and the second motor 25 can be the same, but more preferably their power is different. That is, one motor is a high-power motor and the other is a low-power motor. Preferably, the power of the first motor 15 is 2-10 times that of the second motor 25.

[0039] This application sets up two oil supply mechanisms, specifically using motors of different power ratings (one large and one small), thereby enabling three operating modes: when a large flow rate and ultra-high power input are required, both motors operate simultaneously; when a medium flow rate and medium power input are required, the large-power motor operates while the small-power motor stops; and when a small flow rate and relatively low power input are required, the small-power motor operates while the large-power motor stops. This satisfies the power input requirements of different operating conditions while avoiding the waste of electrical energy.

[0040] Compared to the use of variable frequency motors in existing technologies, the technical solution of this application has a larger maximum output power, is more suitable for the relatively rough working environment of filter presses, is more durable, and is easier to maintain; and, since the purchase cost of variable frequency motors is usually 3-4 times that of ordinary motors, although this application adds an oil supply mechanism, the manufacturing cost is relatively lower.

[0041] Furthermore, it also includes a hydraulic control system, with the first oil pump 11 and the second oil pump 21 connected to the hydraulic cylinder 110 via the hydraulic control system; See Figure 1 As shown, the hydraulic control system includes a three-position four-way directional valve 30, a main oil supply line 31, and a main oil return line 32. The first and second working ports of the three-position four-way directional valve 30 are respectively connected to the two oil chambers of the hydraulic cylinder 110 via oil lines. It should be noted that the first and second working ports can be connected to the two oil chambers of the same hydraulic cylinder 110 via two separate oil lines. See also... Figure 2As shown, the first working port and the second working port can also be connected to the two oil chambers of the two hydraulic cylinders 110 through two oil circuits respectively.

[0042] The inlet and outlet of the three-position four-way directional valve 30 are respectively connected to one end of the oil supply main line 31 and the oil return main line 32. Preferably, the three-position four-way directional valve 30 is a solenoid valve.

[0043] Furthermore, the oil outlets of the first oil pump 11 and the second oil pump 21 are respectively connected to the other end of the main oil supply pipeline 31 through the first pipeline 33 and the second pipeline 34 via a tee fitting.

[0044] Furthermore, a one-way valve 35 is provided on both the first pipeline 33 and the second pipeline 34 to limit the hydraulic oil to flow unidirectionally to the main oil supply pipeline 31.

[0045] Furthermore, it also includes an overflow pipe 36, one end of which is connected to the main oil supply pipe 31, and the other end is connected to the oil tank 1; a pilot overflow valve 37 is provided on the overflow pipe 36. When the pressure in the main oil supply pipe 31 exceeds the set threshold, the pilot overflow valve 37 opens, and some of the hydraulic oil in the main oil supply pipe 31 is discharged and flows back to the oil tank 1.

[0046] Furthermore, the oil inlets of the first oil pump 11 and the second oil pump 21 are respectively connected to the oil tank 1 via oil passages; and the other end of the return oil main pipeline 32 is connected to the oil tank 1. Preferably, a pressure control valve is installed on the return oil main pipeline 32 to maintain its internal pressure within a reasonable range, thereby ensuring smooth movement of the hydraulic piston.

[0047] Optionally, the hydraulic control system can be two sets, including a first hydraulic control system and a second hydraulic control system; the first oil pump 11 and the second oil pump 21 are respectively connected to the hydraulic cylinder 110 through the first hydraulic control system and the second hydraulic control system. That is, without considering cost, two relatively independent hydraulic control systems can also be used to control the first oil pump 11 and the second oil pump 21 to supply oil to the two chambers of the hydraulic cylinder 110 respectively.

[0048] Furthermore, the filter press is horizontal, with the piston cylinder 150 arranged horizontally; or, the filter press is vertical, with the piston cylinder 150 arranged vertically.

[0049] This application sets up two oil supply mechanisms, specifically using motors of different power ratings (one large and one small), thereby enabling three operating modes: when a large flow rate and ultra-high power input are required, both motors operate simultaneously; when a medium flow rate and medium power input are required, the large-power motor operates while the small-power motor stops; and when a small flow rate and relatively low power input are required, the small-power motor operates while the large-power motor stops. This satisfies the power input requirements of different operating conditions while avoiding the waste of electrical energy.

[0050] Example 2 See Figure 2-5 As shown, this embodiment is basically the same as embodiment 1, except that the execution component 100 includes a first execution component 101 and a second execution component 102.

[0051] The first actuation component 101 includes a first hydraulic cylinder 111 and a first piston cylinder 151; the first hydraulic piston in the first hydraulic cylinder 111 is connected to the first working piston in the first piston cylinder 151, and is used to drive the first working piston to reciprocate within the first piston cylinder 151 to work. The second execution component 102 includes a second hydraulic cylinder 112 and a second piston cylinder 152; the second hydraulic piston in the second hydraulic cylinder 112 is connected to the second working piston in the second piston cylinder 152, and is used to drive the second working piston to reciprocate within the second piston cylinder 152 to work. The first rod chamber of the first hydraulic cylinder 111 and the second rod chamber of the second hydraulic cylinder 112 are connected through the intermediate pipeline 103; the first working port and the second working port of the three-position four-way directional valve 30 are respectively connected through the oil circuit to the first rodless chamber of the first hydraulic cylinder 111 and the second rodless chamber of the second hydraulic cylinder 112. Alternatively, the first rodless chamber of the first hydraulic cylinder 111 and the second rodless chamber of the second hydraulic cylinder 112 are connected through the intermediate pipeline 103, and the first working port and the second working port of the three-position four-way directional valve 30 are respectively connected to the first rod chamber of the first hydraulic cylinder 111 and the second rod chamber of the second hydraulic cylinder 112 through the oil circuit. By changing the working position of the three-position four-way directional valve 30, oil is alternately supplied to the first hydraulic cylinder 111 and the second hydraulic cylinder 112, thereby realizing the alternating operation of the first piston cylinder 151 and the second piston cylinder 152.

[0052] Furthermore, the rodless chamber in the first piston cylinder 151 is the first working chamber, with a first feed inlet on one side and a first discharge outlet on the other side; the rodless chamber in the second piston cylinder 152 is the second working chamber, with a second feed inlet on one side and a second discharge outlet on the other side; the first and second feed inlets are connected to the feed pipe 40 for feeding materials into the first and second working chambers respectively; the first and second discharge outlets are connected to the feed pipe 50 for conveying materials to the filter press through the feed pipe 50 respectively.

[0053] Furthermore, a first feed check valve 61 is provided between the first feed port of the first piston cylinder 151 and the feed pipeline 40, for the material in the feed pipeline 40 to pass through the first feed port in one direction and enter the first working chamber. A second feed check valve 62 is provided between the second feed inlet of the second piston cylinder 152 and the feed pipeline 40, for the material in the feed pipeline 40 to pass through the second feed inlet in one direction and enter the second working chamber.

[0054] Preferably, the first feed port of the first piston cylinder 151 and the second feed port of the second piston cylinder 152 are connected to the feed pipeline 40 through two feed branches, and the first feed check valve 61 and the second feed check valve 62 are respectively provided on the two feed branches; a main feed port is provided in the middle of the feed pipeline 40.

[0055] Furthermore, a first feed check valve 63 is provided between the first discharge port of the first piston cylinder 151 and the feed pipeline 50, for the material in the first working chamber to pass through the first discharge port and enter the feed pipeline 50 in one direction; a second feed check valve 64 is provided between the second discharge port of the second piston cylinder 152 and the feed pipeline 50, for the material in the second working chamber to pass through the second discharge port and enter the feed pipeline 50 in one direction.

[0056] The first hydraulic cylinder 111 and the second hydraulic cylinder 112 are also provided with oil return ports on their rod-side or rodless-side chambers connected to the oil supply circuit. The oil return ports are connected to the oil tank 1 through oil return lines. When oil is supplied to one of the first hydraulic cylinder 111 and the second hydraulic cylinder 112, the other one of the first hydraulic cylinder 111 and the second hydraulic cylinder 112 returns the hydraulic oil in its rod-side or rodless-side chamber back to the oil tank 1 through the oil return line.

[0057] Preferably, a level sensor and a temperature sensor are installed inside the oil tank 1, which are used to monitor the level and temperature of the hydraulic oil in the oil tank 1 in real time.

[0058] Furthermore, it also includes a controller, which is connected to the first motor 15, the second motor 25 and the three-position four-way directional valve 30 respectively, and is used to control the magnitude of power input, the magnitude of input oil volume, and alternately supply oil to the first hydraulic cylinder 111 and the second hydraulic cylinder 112 to realize the alternating operation of the first piston cylinder 151 and the second piston cylinder 152.

[0059] Preferably, the piston in piston cylinder 150 is connected to a push rod extending from hydraulic cylinder 110 via a piston rod. More preferably, the piston rod of piston cylinder 150 and the push rod of hydraulic cylinder 110 are coaxially connected via a coupling.

[0060] The first execution component 101 and the second execution component 102 are arranged in parallel at intervals.

[0061] This invention achieves continuous material feeding by setting up two interconnected first and second hydraulic cylinders, enabling the two piston cylinders to work alternately without interruption. This greatly improves the material feeding speed.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A feed pump for a multimodal filter press, characterized in that, Includes a first oil supply mechanism, a second oil supply mechanism, and actuators; The actuating component includes a hydraulic cylinder and a piston cylinder; the hydraulic piston in the hydraulic cylinder is connected to the working piston in the piston cylinder. The first oil supply mechanism includes a first oil pump and a first motor; the second oil supply mechanism includes a second oil pump and a second motor. The first oil pump and the second oil pump are respectively connected to the hydraulic cylinder. The first motor and the second motor work simultaneously or selectively to drive the first oil pump and the second oil pump to supply oil to the hydraulic cylinder, and then drive the working piston to reciprocate within the piston cylinder through the hydraulic piston to work.

2. The multimodal filter press feed pump according to claim 1, characterized in that, The power of the first motor and the second motor are different.

3. The multimodal filter press feed pump according to claim 1, characterized in that, The power of the first motor is 2 to 10 times that of the second motor.

4. The multimodal filter press feed pump according to claim 1, characterized in that, It also includes a hydraulic control system, wherein the first oil pump and the second oil pump are connected to the hydraulic cylinder through the hydraulic control system; The hydraulic control system includes a three-position four-way directional valve, a main oil supply line, and a main oil return line. The first working port and the second working port of the three-position four-way directional valve are respectively connected to the two oil chambers of the hydraulic cylinder through oil lines. The oil inlet and the oil return port of the three-position four-way directional valve are respectively connected to one end of the main oil supply line and the main oil return line.

5. The multimodal filter press feed pump according to claim 4, characterized in that, The oil outlets of the first oil pump and the second oil pump are respectively connected to the other end of the main oil supply pipeline through the first pipeline and the second pipeline.

6. The multimodal filter press feed pump according to claim 5, characterized in that, Both the first and second pipelines are equipped with check valves to limit the hydraulic oil to flow unidirectionally to the main oil supply pipeline.

7. The multimodal filter press feed pump according to claim 4, characterized in that, It also includes an overflow pipeline, one end of which is connected to the main oil supply pipeline and the other end is connected to the oil tank. A pilot overflow valve is installed on the overflow pipeline. When the pressure in the main oil supply pipeline exceeds a set threshold, the pilot overflow valve opens to export part of the hydraulic oil in the main oil supply pipeline and return it to the oil tank.

8. The multimodal filter press feed pump according to claim 4, characterized in that, The hydraulic control system includes a first hydraulic control system and a second hydraulic control system; the first oil pump and the second oil pump are respectively connected to the hydraulic cylinder through the first hydraulic control system and the second hydraulic control system.

9. The multimodal filter press feed pump according to claim 1, characterized in that, The filter press is horizontal, and the piston cylinder is arranged horizontally; or, the filter press is vertical, and the piston cylinder is arranged vertically.

10. The multimodal filter press feed pump according to claim 4, characterized in that, The execution component includes a first execution component and a second execution component; The first actuation component includes a first hydraulic cylinder and a first piston cylinder; the first hydraulic piston in the first hydraulic cylinder is connected to the first working piston in the first piston cylinder, and is used to drive the first working piston to reciprocate within the first piston cylinder to work. The second actuation component includes a second hydraulic cylinder and a second piston cylinder; the second hydraulic piston in the second hydraulic cylinder is connected to the second working piston in the second piston cylinder, and is used to drive the second working piston to reciprocate within the second piston cylinder to work. The first rod chamber of the first hydraulic cylinder and the second rod chamber of the second hydraulic cylinder are connected through an intermediate pipeline; the first working port and the second working port of the three-position four-way directional valve are respectively connected to the first rodless chamber of the first hydraulic cylinder and the second rodless chamber of the second hydraulic cylinder through oil circuits. Alternatively, the first rodless chamber of the first hydraulic cylinder and the second rodless chamber of the second hydraulic cylinder are connected through an intermediate pipeline, and the first working port and the second working port of the three-position four-way directional valve are respectively connected to the first rod chamber of the first hydraulic cylinder and the second rod chamber of the second hydraulic cylinder through oil circuits. By changing the working position of the three-position four-way directional valve, oil is alternately supplied to the first hydraulic cylinder and the second hydraulic cylinder, thereby realizing the alternating operation of the first piston cylinder and the second piston cylinder.

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