CN-224228805-U - Feeding pump of filter press

Abstract

The utility model provides a filter press feeding pump which comprises an oil pump, a first execution assembly and a second execution assembly, wherein the first execution assembly comprises a first hydraulic cylinder and a first piston cylinder, the second execution assembly comprises a second hydraulic cylinder and a second piston cylinder, a second hydraulic piston in the second hydraulic cylinder is connected with a second working piston in the second piston cylinder and is used for driving the second working piston to reciprocate in the second piston cylinder to work, the oil pump alternately supplies oil to the first hydraulic cylinder and the second hydraulic cylinder through oil supply ways so as to realize the alternate work of the first piston cylinder and the second piston cylinder, and the two first hydraulic cylinders and the second hydraulic cylinders which are connected with each other are arranged to realize the uninterrupted alternate work of the two piston cylinders, so that the continuity of feeding is realized, and the feeding speed is greatly improved.

Inventors

• HU BINGYAN
• LIU BING
• ZHAO ZHIJIE

Assignees

• 德州海联液压科技有限公司

Dates

Publication Date

20260512

Application Date

20250604

Claims (19)

1. 1. The filter press feeding pump is characterized by comprising an oil pump, a first executing assembly and a second executing assembly; The first execution assembly comprises a first hydraulic cylinder and a first piston cylinder, wherein a first hydraulic piston in the first hydraulic cylinder is connected with a first working piston in the first piston cylinder and is used for driving the first working piston to reciprocate in the first piston cylinder to work; The second execution assembly comprises a second hydraulic cylinder and a second piston cylinder, wherein a second hydraulic piston in the second hydraulic cylinder is connected with a second working piston in the second piston cylinder and is used for driving the second working piston to reciprocate in the second piston cylinder to work; The first rod cavity of the first hydraulic cylinder is communicated with the second rod cavity of the second hydraulic cylinder through an intermediate pipeline, the oil pump is respectively communicated with the first rod-free cavity of the first hydraulic cylinder and the second rod-free cavity of the second hydraulic cylinder through oil supply pipelines, or the first rod-free cavity of the first hydraulic cylinder is communicated with the second rod-free cavity of the second hydraulic cylinder through an intermediate pipeline, the oil pump is respectively communicated with the first rod cavity of the first hydraulic cylinder and the second rod cavity of the second hydraulic cylinder through oil supply pipelines, and the oil pump alternately supplies oil to the first hydraulic cylinder and the second hydraulic cylinder through the oil supply pipelines, so that the first piston cylinder and the second piston cylinder alternately work; the rodless cavity in the first piston cylinder is a first working cavity, one side of the first working cavity is provided with a first feeding port, and the other side of the first working cavity is provided with a first discharging port; The rodless cavity in the second piston cylinder is a second working cavity, one side of the second working cavity is provided with a second feeding port, and the other side of the second working cavity is provided with a second discharging port; the first feeding port and the second feeding port are connected with a feeding pipeline and are used for respectively inputting materials into the first working chamber and the second working chamber; the first discharge port and the second discharge port are communicated with a feed pipeline and are used for conveying materials to the filter press through the feed pipeline respectively; The oil supply circuit is provided with a reversing valve, an inlet of the reversing valve is connected with an oil outlet of the oil pump through an oil circuit, and two outlets of the reversing valve are respectively communicated with rod cavities or rodless cavities of the first hydraulic cylinder and the second hydraulic cylinder and are used for alternatively supplying oil to the first hydraulic cylinder or the second hydraulic cylinder.
2. 2. The filter press feed pump of claim 1, wherein a first feed check valve is disposed between the first feed port and the feed line for one-way passage of material in the feed line through the first feed port into the first working chamber; And a second feeding check valve is arranged between the second feeding port and the feeding pipeline and is used for enabling materials in the feeding pipeline to pass through the second feeding port and enter the second working chamber in one way.
3. 3. The filter press feed pump of claim 1, wherein a first feed check valve is disposed between the first discharge port and the feed line for one-way passage of material in the first working chamber through the first discharge port into the feed line; A second feeding check valve is arranged between the second discharge hole and the feeding pipeline and is used for enabling materials in the second working cavity to pass through the second discharge hole and enter the feeding pipeline in a one-way mode.
4. 4. The filter press feed pump of claim 1, wherein the rod cavity or the rodless cavity, in which the first hydraulic cylinder and the second hydraulic cylinder are connected to the oil supply path, is further provided with an oil return port, and the oil return port is communicated with the oil tank through an oil return pipeline.
5. 5. The filter press feed pump of claim 4, wherein a liquid level sensor and a temperature sensor are disposed in the oil tank, and are respectively used for monitoring the liquid level and the temperature of the hydraulic oil in the oil tank in real time.
6. 6. The filter press feed pump of claim 1, further comprising a controller, wherein the controller is respectively connected with the oil pump and the reversing valve, and is used for controlling the oil pump to alternately supply oil to the first hydraulic cylinder and the second hydraulic cylinder, so as to realize alternate operation of the first piston cylinder and the second piston cylinder.
7. 7. The filter press feed pump of claim 1, wherein the first and second actuating assemblies are arranged in parallel spaced apart relation.
8. 8. The filter press feed pump of claim 1, wherein the first and second actuating assemblies are vertically disposed, i.e., the first hydraulic cylinder, the first piston cylinder, the second hydraulic cylinder, and the second piston cylinder are vertically disposed; Or the first executing component and the second executing component are horizontally arranged, namely the first hydraulic cylinder, the first piston cylinder, the second hydraulic cylinder and the second piston cylinder are horizontally arranged.
9. 9. The filter press feeding pump according to claim 1, wherein the first piston cylinder and the second piston cylinder comprise a cylinder body part and a storage bin part which are arranged in a split mode, a working piston is slidably arranged in the cylinder body part, a piston rod fixedly connected with the working piston extends out of one end of the cylinder body part, the storage bin part is connected to the other end of the cylinder body part in a sealing mode, and a feeding port and a discharging port are respectively arranged on the side wall of the storage bin part.
10. 10. The filter press feed pump of claim 9, wherein the feed port and the discharge port are provided on opposite side walls of the silo portion, respectively, and the feed port and the discharge port are provided at an upper middle portion of the side walls of the silo portion in a height direction.
11. 11. The filter press feed pump according to claim 9, wherein the silo part is provided at a rodless chamber side of the cylinder part, the cylinder part is provided with a vent hole at a rod chamber side, and the rod chamber is communicated with the atmosphere through the vent hole, thereby reducing the resistance of the working piston.
12. 12. The filter press feed pump of claim 6, wherein the first piston cylinder and the second piston cylinder comprise a cylinder body, a working piston and an end cover, a shaft hole is arranged in the center of the end cover, and a piston rod of the working piston extends out of the cylinder body from the shaft hole.
13. 13. The filter press feed pump of claim 12, wherein an oil injection port or an oil injection nozzle is arranged at the top or the upper part of the rod cavity in the cylinder body, and an external lubricating oil source is communicated with the oil injection port or the oil injection nozzle through a lubricating oil path and is used for injecting lubricating oil into the rod cavity so as to lubricate the working piston.
14. 14. The filter press feed pump of claim 13, wherein the external source of lubrication oil comprises a lubrication pump and a lubrication tank, the lubrication tank being connected to the oil injection port or the oil injection nozzle via the lubrication circuit, the lubrication pump being disposed on the lubrication circuit.
15. 15. The filter press feed pump of claim 14, wherein the lubrication circuit is provided with a control valve for controlling the on-off of the lubrication circuit.
16. 16. The filter press feed pump of claim 15, wherein a controller is coupled to the lubrication pump and the control valve to effect periodic oil feed lubrication to the working piston by controlling timed opening of the lubrication pump and the control valve.
17. 17. The filter press feeding pump according to claim 13, wherein a sealing guide sleeve is inserted in the shaft hole, a guide hole is formed in the center of the sealing guide sleeve, a piston rod of the working piston extends out of the cylinder body from the guide hole, more than two sealing rings are embedded in the inner wall of the guide hole and used for sealing between the piston rod and the guide hole, an oil storage cavity is formed between the two adjacent sealing rings, the piston rod and the inner wall of the guide hole in a surrounding mode, and an external lubricating oil source is communicated with the oil storage cavity through a lubricating oil way and used for supplying lubricating oil into the oil storage cavity so as to lubricate the piston rod.
18. 18. The filter press feed pump of claim 17, wherein the external lubricating oil source comprises a lubricating pump and a lubricating oil tank, the lubricating pump is communicated with the oil storage cavity through a lubricating oil path, and an oil valve is arranged on the lubricating oil path and used for controlling on-off of the lubricating oil path.
19. 19. The filter press feed pump of claim 18, wherein a controller is coupled to the lubrication pump and the oil valve to effect periodic oil feed lubrication to the oil reservoir by controlling timed opening of the lubrication pump and the oil valve.

Description

Feeding pump of filter press Technical Field The utility model relates to the technical field of pumps special for filter presses, in particular to a feed pump of a filter press. Background At present, a filter press is a common solid-liquid separation mechanical device, and a certain pressure is applied to a solid-liquid mixture, so that liquid materials in the solid-liquid mixture are dialyzed out and separated from the solid materials. The filter press is mostly used for treating solid-liquid mixture materials such as slag slurry, slurry and the like, and the materials are generally high in viscosity and poor in fluidity, so that a special feeding pump is required to be arranged for pumping materials into the filter press when the filter press is used for treating the materials. The common special pump for the filter press comprises a slurry pump and a screw pump, wherein the slurry pump is used for conveying materials to the filter press through a motor driving slurry pump impeller, the screw pump is used for conveying materials to the filter press through a motor driving screw, and the two feeding pumps are directly driven by mechanical kinetic energy generated by motor torque, so that the energy consumption is relatively large, the cost is high, and the efficiency is low. Disclosure of utility model The utility model aims to provide a filter press feeding pump so as to solve at least one technical problem in the prior art. In order to solve the technical problems, the utility model provides a filter press feeding pump, which comprises an oil pump, a first executing component and a second executing component; The first execution assembly comprises a first hydraulic cylinder and a first piston cylinder, wherein a first hydraulic piston in the first hydraulic cylinder is connected with a first working piston in the first piston cylinder and is used for driving the first working piston to reciprocate in the first piston cylinder to work; The second execution assembly comprises a second hydraulic cylinder and a second piston cylinder, wherein a second hydraulic piston in the second hydraulic cylinder is connected with a second working piston in the second piston cylinder and is used for driving the second working piston to reciprocate in the second piston cylinder to work; The first rod cavity of the first hydraulic cylinder is communicated with the second rod cavity of the second hydraulic cylinder through an intermediate pipeline, the oil pump is respectively communicated with the first rod-free cavity of the first hydraulic cylinder and the second rod-free cavity of the second hydraulic cylinder through oil supply pipelines, or the first rod-free cavity of the first hydraulic cylinder is communicated with the second rod-free cavity of the second hydraulic cylinder through an intermediate pipeline, the oil pump is respectively communicated with the first rod cavity of the first hydraulic cylinder and the second rod cavity of the second hydraulic cylinder through oil supply pipelines, and the oil pump alternately supplies oil to the first hydraulic cylinder and the second hydraulic cylinder through the oil supply pipelines, so that the first piston cylinder and the second piston cylinder alternately work. Further, a rodless cavity in the first piston cylinder is a first working cavity, one side of the first working cavity is provided with a first feeding port, and the other side of the first working cavity is provided with a first discharging port; The rodless cavity in the second piston cylinder is a second working cavity, one side of the second working cavity is provided with a second feeding port, and the other side of the second working cavity is provided with a second discharging port; the first feeding port and the second feeding port are connected with a feeding pipeline and are used for respectively inputting materials into the first working chamber and the second working chamber; The first discharge port and the second discharge port are communicated with the feed pipeline and are used for conveying materials to the filter press through the feed pipeline respectively. Further, a first feeding check valve is arranged between the first feeding port and the feeding pipeline, and is used for enabling materials in the feeding pipeline to pass through the first feeding port and enter the first working chamber in a one-way manner; And a second feeding check valve is arranged between the second feeding port and the feeding pipeline and is used for enabling materials in the feeding pipeline to pass through the second feeding port and enter the second working chamber in one way. Preferably, the first feeding port and the second feeding port are respectively communicated with the feeding pipeline through two feeding branches, the first feeding check valve and the second feeding check valve are respectively arranged on the two feeding branches, and the middle part of the feeding pipeline is provided with a t