Paper machine shoe pressure hydraulic lifting control device

Abstract

The utility model belongs to the technical field of papermaking equipment, and aims to provide a shoe pressure hydraulic lifting control device for a paper machine, which comprises an oil tank, and an openable sealing cover is arranged at the top of the oil tank; a motor is arranged on the sealing cover, and the bottom of the motor is connected with an oil pump; one end of the oil pump is connected with an oil inlet pipeline, the other end of the oil pump is connected with an oil outlet pipeline, an oil suction filter is arranged at the front end of the oil inlet pipeline, and a one-way valve is arranged on the oil outlet pipeline; the one-way valve is connected with a tubular overflow valve, a hand-operated direction valve and a tubular throttle valve through a rear-end pipeline; the rear end of the tubular throttle valve is connected with a hose, and a pipeline joint is arranged at the top of the hose; a fixing frame is arranged on the side face of the oil tank and connected with a control cabinet. The device has the characteristics of compact structure, stable pressure supply, high control precision, convenience in operation and use and the like, and can be widely applied to the technical field of production of the shoe pressing device of the paper machine.

Description

TECHNICAL FIELD

[0001] The utility model belongs to papermaking equipment technical field, specifically, it is a paper machine boot pressure hydraulic lifting control device. BACKGROUND

[0002] In the modern industrial paper production process, beating and netting can ensure that the fibers are evenly distributed in the pulp, and at the same time, the hydroxyl groups of the fibers are exposed. After the paper is on the net, it still needs to go through the processes of dewatering, pressing, drying, and polishing, etc. so that the qualified paper can be finally obtained. As an important innovation technology in the modern paper machine pressing process, the shoe type pressing is widely used in the paper industry because of its characteristics of significantly improving the papermaking efficiency, improving the dewatering efficiency, improving the paper quality, and reducing the production cost, etc.

[0003] The shoe type pressing is mainly composed of a shoe roll, a back pressure roll, a shoe sleeve, a load locking, and some auxiliary elements. The roll core of the shoe roll is stationary, while the shoe sleeve is a moving rotating part. The pressure is applied through the hydraulic oil cylinder to form a high-pressure oil film between the shoe plate and the shoe sleeve, thereby realizing lubrication and support. Patent application number "202010238710.3" discloses a shoe roll structure of boot pressure, which comprises a shoe plate, a saddle, a shoe sleeve, a shoe sleeve support frame, an unloading lifting device, a pipeline system, etc. The left and right ends of the shoe sleeve are connected with a shoe sleeve sealing rotating device, and the bottom of the shoe sleeve is connected with the unloading lifting device. The main problem of uniformity of water in the pressure area is solved by adopting a piston mode. However, the unloading lifting device and the shoe sleeve are connected in one body, which has the problems of poor oil supply stability, low lifting control precision, and inconvenient maintenance and installation, etc. Therefore, the existing paper machine boot pressure lifting device needs to be further improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies in the prior art, and provides a paper machine boot pressure hydraulic lifting control device, which has the characteristics of compact structure, stable pressure supply, high control precision, and convenient operation and use, and can be widely used in the production technical field of paper machine boot pressure device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a paper machine boot pressure hydraulic lifting control device, comprising an oil tank, the top of the oil tank is provided with a sealable sealing cover; the sealing cover is provided with a motor, the bottom of the motor is connected with an oil pump; one end of the oil pump is connected with an oil inlet pipeline, and the other end is connected with an oil outlet pipeline; the front end of the oil inlet pipeline is provided with an oil suction filter; a one-way valve is arranged on the oil outlet pipeline; the one-way valve is connected with a tubular overflow valve, a manual reversing valve, and a tubular throttle valve through a rear end pipeline; the rear end of the tubular throttle valve is connected with a hose, and the top of the hose is provided with a pipeline joint; the side of the oil tank is provided with a fixing frame, and the fixing frame is connected with a control cabinet.

[0006] As an improvement, the oil tank has a square structure, with a level gauge on the side, and the level gauge is located at the upper end of the side of the oil tank.

[0007] As an improvement, an oil drain ball valve is provided below the level gauge.

[0008] As an improvement, the bottom of the fuel tank is equipped with four casters, all of which are universal casters with brakes.

[0009] As an improvement, the motor is connected to the oil pump via a pump sleeve coupling.

[0010] As an improvement, the sealing cap is equipped with an oil filler port and a temperature and level sensor, which is connected to the control cabinet via a circuit.

[0011] As an improvement, the manual directional valve is connected to the return oil filter via a bent pipe.

[0012] As an improvement, a pressure gauge is provided at the upper end of the fixing frame, and a regulating valve is provided below the pressure gauge.

[0013] As an improvement, the pipe fitting is connected to the bottom of the shoe sleeve of the paper machine shoe pressing device, thereby providing a hydraulic supply to the shoe sleeve.

[0014] As an improvement, the control cabinet is equipped with a PLC control system, which can automatically control the oil pump flow and achieve precise lifting and lowering actions.

[0015] The beneficial effects of this utility model are as follows: A hydraulic lifting control device for paper machine shoe presses features a compact structure, stable pressure supply, high control precision, and convenient operation. By employing a lifting device equipped with an independent PLC control system, hydraulic supply is provided to the shoe presses of the paper machine, ensuring more stable and reliable hydraulic output. This enables precise lifting and return of the shoe presses, effectively improving the transverse moisture uniformity of the paper. By integrating the control cabinet on the side of the oil tank, the footprint of the control device is reduced. Furthermore, the four casters make the device easier to move and use. Additionally, the flexible hose and quick connector at the tail end allow for flexible and convenient connection to the shoe press inlet pipe at a fixed position. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of the hydraulic lifting control device for the paper machine shoe pressure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the internal structure of the hydraulic lifting control device for the paper machine shoe pressure of this utility model;

[0018] Fig. 3This is a front view of the hydraulic lifting control device for the paper machine shoe pressure of this utility model;

[0019] Fig. 4 This is a side view of the hydraulic lifting control device for the paper machine shoe pressure of this utility model;

[0020] Fig. 5 This is a top view of the hydraulic lifting control device for the paper machine shoe pressure of this utility model.

[0021] In the diagram: 1. Oil tank; 2. Sealing cap; 3. Motor; 4. Oil pump; 5. Inlet oil pipe; 6. Outlet oil pipe; 7. Suction filter; 8. Check valve; 9. Pipeline relief valve; 10. Manual directional valve; 11. Pipeline throttle valve; 12. Hope; 13. Pipeline connector; 14. Mounting bracket; 15. Control cabinet; 16. Level gauge; 17. Drain ball valve; 18. Casters; 19. Pump sleeve coupling; 20. Filler port; 21. Temperature and level sensor; 22. Return oil filter; 23. Pressure gauge; 24. Regulating valve. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Figs. 1-4 As shown, this utility model discloses a hydraulic lifting control device for a paper machine shoe pressure, comprising an oil tank 1, with an openable sealing cover 2 on the top of the oil tank 1; a motor 3 is mounted on the sealing cover 2, and an oil pump 4 is connected to the bottom of the motor 3. Specifically, the motor 3 is connected to the oil pump 4 via a pump coupling 19; one end of the oil pump 4 is connected to an oil inlet pipe 5, and the other end is connected to an oil outlet pipe 6. An oil suction filter 7 is provided at the front end of the oil inlet pipe 5, and a one-way valve 8 is provided on the oil outlet pipe 6; the one-way valve 8 is connected to a tubular overflow valve 9, a manual reversing valve 10, and a tubular throttle valve 11 via a rear-end pipe; a flexible hose 12 is connected to the rear end of the tubular throttle valve 11, and a pipe connector 13 is provided at the top of the flexible hose 12; a fixing frame 14 is provided on the side of the oil tank 1, and the fixing frame 14 is connected to a control cabinet 15.

[0023] Furthermore, the oil tank 1 has a square structure and a level gauge 16 is provided on the side, and the level gauge 16 is located at the upper end of the side of the oil tank 1; specifically, the level gauge 16 is made of transparent glass and is 100~250mm away from the top sealing cover of the oil tank 1, so that the oil level inside the oil tank can be observed.

[0024] Furthermore, a drain ball valve 17 is provided below the level gauge 16; specifically, the drain ball valve 17 is located at the bottom of the oil tank 1 and is made of copper ball valve, which is conducive to draining all the hydraulic oil inside the oil tank and facilitating the regular replacement of hydraulic oil.

[0025] Furthermore, the bottom of the oil tank 1 is provided with four casters 18, all of which are universal casters with brakes. Specifically, the casters 18 are symmetrically distributed at the bottom of the oil tank 1 and are fixedly connected by fixing blocks. The casters 18 facilitate the movement of the lifting control device and make it convenient for installation and use.

[0026] Furthermore, the sealing cap 2 is provided with a filler port 20 and a temperature and liquid level sensor 21. The temperature and liquid level sensor 21 is connected to the control cabinet 15 via a circuit. Specifically, the bottom of the temperature and liquid level sensor 21 extends into the oil tank 1 to test and provide feedback on the oil temperature inside the oil tank. When the oil temperature is too high, the system will stop the oil pump from supplying oil.

[0027] Furthermore, the manual directional valve 10 is connected to the return oil filter 22 via a bent pipe.

[0028] Furthermore, a pressure gauge 23 is provided at the upper end of the fixed frame 14, and a regulating valve 24 is provided below the pressure gauge 23; specifically, the pressure gauge 23 provides timely feedback on the oil supply pressure to ensure the stability of hydraulic lifting.

[0029] Furthermore, the pipe connector 13 is connected to the bottom of the shoe cover of the paper machine shoe pressing device, thereby providing hydraulic supply to the shoe cover; specifically, the pipe connector 13 set at the top of the hose 12 is used to quickly connect the shoe cover supply pipeline, and the position can be changed at will, which effectively improves the installation efficiency.

[0030] Furthermore, the control cabinet 15 is equipped with a PLC control system, which can automatically control the oil pump flow to achieve precise lifting and lowering actions; specifically, the control cabinet 15 is equipped with control buttons on its surface, which are used to start and stop the hydraulic lifting control device.

[0031] This utility model of a paper machine shoe press hydraulic lifting control device features a compact structure, stable pressure supply, high control precision, and convenient operation. Its working principle is as follows: Turning on the switch button on the control cabinet 15 starts the motor 3, which drives the oil pump 4 to pump oil via the pump coupling 19. The hydraulic oil inside the oil tank 1 is filtered by the suction filter 7 and then pumped into the outlet pipeline 6. It then passes through the one-way valve 8 into the upper pipeline of the sealing cover 2, and then through the tubular overflow valve 9, manual directional valve 10, and tubular throttle valve 11 into the hose 12. Finally, it enters the bottom of the shoe of the paper machine shoe press device through the pipeline connector 13 at the top of the hose 12, thus providing a stable and precise hydraulic supply to the shoe and realizing the shoe pressing process for paper.

[0032] Finally, it should be noted that the above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A hydraulic lifting control device for paper machine shoe pressure, comprising an oil tank (1), wherein the top of the oil tank (1) is provided with an openable sealing cover (2); characterized in that, The sealing cover (2) is equipped with a motor (3), and the bottom of the motor (3) is connected to an oil pump (4); one end of the oil pump (4) is connected to an oil inlet pipe (5), and the other end is connected to an oil outlet pipe (6). The front end of the oil inlet pipe (5) is equipped with an oil suction filter (7), and the oil outlet pipe (6) is equipped with a one-way valve (8); the one-way valve (8) is connected to a pipe overflow valve (9), a manual reversing valve (10), and a pipe throttle valve (11) through a rear end pipe; the rear end of the pipe throttle valve (11) is connected to a hose (12), and the top of the hose (12) is equipped with a pipe connector (13); the side of the oil tank (1) is equipped with a fixing frame (14), and the fixing frame (14) is connected to the control cabinet (15).

2. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The oil tank (1) has a square structure and a level gauge (16) is provided on the side, and the level gauge (16) is located at the upper end of the side of the oil tank (1).

3. The paper machine shoe pressure hydraulic lifting control device according to claim 2, characterized in that, An oil drain ball valve (17) is provided below the level gauge (16).

4. The paper machine shoe pressure hydraulic lifting control device according to claim 2, characterized in that, The bottom of the oil tank (1) is provided with four casters (18), all of which are universal casters with brakes.

5. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The motor (3) is connected to the oil pump (4) via a pump sleeve coupling (19).

6. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The sealing cap (2) is provided with an oil filling port (20) and a temperature and liquid level sensor (21), and the temperature and liquid level sensor (21) is connected to the control cabinet (15) through a line.

7. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The manual reversing valve (10) is connected to the return oil filter (22) via a bent pipe.

8. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The upper end of the fixed frame (14) is provided with a pressure gauge (23), and the lower end of the pressure gauge (23) is provided with a regulating valve (24).

9. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The pipe connector (13) is connected to the bottom of the shoe cover of the paper machine shoe pressing device, thereby providing hydraulic supply to the shoe cover.

10. The paper machine shoe pressure hydraulic lifting control device according to claim 1, characterized in that, The control cabinet (15) is equipped with a PLC control system, which can automatically control the oil pump flow rate and achieve precise lifting and lowering actions.

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