Hydraulic stabilizing device of roller press

Abstract

The utility model relates to the technical field of roller presses, and discloses a hydraulic stabilizing device of a roller press. The hydraulic stabilizing device of the roller press comprises an oil tank, a top cover is fixedly installed above the oil tank, an oil injection port is fixedly installed above the top cover, a motor is fixedly installed above the top cover, the tail end of a rotating shaft of the motor is connected with an oil pump, an oil filter is fixedly installed in the oil tank, and the oil filter is connected with an oil pump. An oil inlet pipe is fixedly installed at the outlet end of the oil pump, the adapter pipe can facilitate connection of the spiral pipe and the backflow pipe, the spiral pipe can make hydraulic oil move forwards into the liquid discharging pipe in a spiral shape, and in this way, the hydraulic oil can enter the cooling pipe through the spiral pipe before flowing back into the oil tank through the liquid discharging pipe; and one connecting pipe on the front side and the rear side above the cooling pipe is used for feeding water, and the other connecting pipe is used for discharging water, so that cooling water circulation is formed in the cooling pipe, and cooling water absorbs heat of the hydraulic oil to prevent the heat of the hydraulic oil from rising.

Description

Technical Field

[0001] This utility model relates to the field of roller press technology, specifically to a hydraulic stabilizing device for roller presses. Background Technology

[0002] The roller press is designed based on the principle of bed grinding, and its main features are: high pressure, full speed, full material, and bed grinding. The roller press consists of two opposing, synchronously rotating extrusion rollers, one fixed and one movable. Material is fed from above the rollers and continuously drawn into the space between them. Under high pressure of 100-150 MPa, it is transformed into a dense cake that is discharged from the bottom of the machine. The discharged cake contains a certain proportion of fine finished product particles. Numerous cracks are generated within the non-finished particles, improving the grindability of the material and significantly reducing grinding energy consumption during further crushing.

[0003] The existing Chinese utility model patent with publication number CN202212220U discloses a hydraulic system for a roller press, belonging to the field of roller presses and high-pressure roller mills used in the building materials and mining industries. The hydraulic system of this utility model includes an accumulator, a main hydraulic cylinder, and a pressure sensor. The accumulator is connected to the hydraulic station's oil supply pipeline via a third solenoid directional valve and to the hydraulic station's oil tank via a second solenoid directional valve. The main hydraulic cylinder and the pressure sensor are simultaneously connected between a check valve and the second solenoid directional valve, and between the accumulator and the third solenoid directional valve. This utility model's hydraulic system for the roller press enables a relatively stable gap between the fixed and movable rollers, ensuring stable and reliable operation of the roller press, thereby increasing its service life, and is extremely easy to operate.

[0004] Existing roller presses are generally driven by hydraulic stations. Currently, the hydraulic stations cannot monitor the oil pressure in real time, resulting in frequent fluctuations in the piston pressure of the roller press. At the same time, after multiple compressions, the hydraulic oil temperature rises. When heated, the hydraulic oil becomes viscous, affecting the oil pump's delivery and causing the hydraulic equipment's response speed to drop. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a hydraulic stabilizing device for roller presses, which has the advantages of maintaining stable oil pressure and preventing the hydraulic oil temperature from rising, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic stabilizing device for a roller press, comprising: an oil tank, a top cover fixedly installed above the oil tank, an oil inlet fixedly installed above the top cover, a motor fixedly installed above the top cover, an oil pump connected to the end of the motor shaft, an oil filter fixedly installed inside the oil tank, an oil inlet pipe fixedly installed at the outlet end of the oil pump, a valve body fixedly installed at the end of the oil inlet pipe, a check valve fixedly installed at the right end of the valve body, a directional valve fixedly installed above the valve body, a throttle valve fixedly installed above the valve body, and a solenoid valve fixedly installed above the throttle valve. An output pipe is fixedly installed on the front side of the valve body, and a hydraulic gauge is fixedly installed at the front end of the output pipe. A support frame is fixedly installed on the top cover, and an accumulator is fixedly installed inside the support frame. A return pipe is fixedly installed on the left side of the valve body, and a cooling pipe is fixedly installed at the end of the return pipe. A fixing frame is fixedly installed on the outside of the cooling pipe, and a connecting pipe is fixedly installed on the top of the cooling pipe. A drain pipe is fixedly installed at the front end of the cooling pipe, and adapter pipes are fixedly installed at both ends inside the cooling pipe. A spiral pipe is fixedly installed between the adapter pipes. A PLC controller is fixedly installed on the front side of the reversing valve. The oil tank can store hydraulic oil.

[0009] As a preferred embodiment of this utility model, the inlet of the oil pump vertically penetrates the top cover and is located inside the oil tank, and the inlet of the oil pump is connected to the oil filter; the oil pump is capable of delivering hydraulic oil.

[0010] As a preferred embodiment of this utility model, one end of the oil inlet pipe is connected to the output end of the oil pump, and the other end is connected to the valve body through a one-way valve. The directional valve, throttle valve, and solenoid valve are connected to each other through the valve body. The oil inlet pipe facilitates the oil pump to deliver hydraulic oil to the valve body.

[0011] As a preferred technical solution of this utility model, the front side of the valve body is provided with two sets of symmetrical opening structures communicating with the inner cavity, and the accumulator is fixedly connected to the top cover through a support frame; the valve body can connect a reversing valve, a throttle valve and a solenoid valve in series through an internal oil circuit.

[0012] As a preferred embodiment of this utility model, the bottom end of the accumulator is connected to the inner cavity of the valve body, and the accumulator is located in front of the reversing valve; the accumulator can easily maintain the pipeline pressure.

[0013] As a preferred embodiment of this utility model, the valve body is connected to the adapter pipe at the rear end of the cooling pipe through the return pipe, and the connecting pipe penetrates the pipe wall of the cooling pipe and is connected to the inner cavity of the cooling pipe; the connecting pipe facilitates the circulation of cooling water.

[0014] As a preferred embodiment of this utility model, the spiral tube is fixedly connected to the cooling tube through the adapter pipes at both ends; the spiral tube facilitates the cooling of hydraulic oil.

[0015] Compared with the prior art, the present invention provides a hydraulic stabilizing device for a roller press, which has the following beneficial effects:

[0016] 1. This utility model, through the setting of the cooling pipe, connects the valve body to the adapter pipe at the rear end of the cooling pipe via the return pipe. The connecting pipe penetrates the wall of the cooling pipe and connects to the inner cavity of the cooling pipe. The spiral pipe is fixedly connected to the cooling pipe via the adapter pipes at both ends. The cooling pipe facilitates the absorption of heat from the hydraulic oil by the cooling water. The connecting pipe facilitates the circulation of cooling water. The adapter pipe facilitates the connection between the spiral pipe and the return pipe. The spiral pipe allows the hydraulic oil to move forward in a spiral shape to the inside of the drain pipe. This method allows the hydraulic oil to enter the cooling pipe through the spiral pipe before flowing back to the oil tank through the drain pipe. The connecting pipes on the front and rear sides above the cooling pipe have one pipe for water inlet and the other for water outlet, forming a cooling water circulation inside the cooling pipe. This allows the cooling water to absorb the heat from the hydraulic oil and prevents the hydraulic oil from overheating.

[0017] 2. This utility model uses a PLC controller to control the opening and closing of the solenoid valve based on the monitoring data of the hydraulic gauge. The accumulator is fixedly connected to the top cover via a support frame. The bottom of the accumulator is connected to the inner cavity of the valve body and is located in front of the reversing valve. The air bladder inside the accumulator can discharge the hydraulic oil inside the accumulator when the oil pressure in the lower oil circuit decreases. The hydraulic gauge can monitor the oil pressure inside the corresponding pipeline. After the hydraulic gauge detects a change in the oil pressure in the pipeline, it will open the solenoid valve, thereby allowing the hydraulic oil inside the accumulator to flow back into the pipeline to stabilize the pressure and thus prevent the hydraulic equipment of the roller press from maintaining stable oil pressure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the valve body mounting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cooling pipe installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the spiral tube installation structure of this utility model;

[0022] The components are as follows: 1. Oil tank; 11. Top cover; 12. Oil inlet; 13. Motor; 14. Oil pump; 15. Oil filter; 16. Oil inlet pipe; 17. Valve body; 18. Check valve; 19. Directional valve; 110. Throttle valve; 111. Solenoid valve; 112. Output pipe; 113. Hydraulic gauge; 114. Support frame; 115. Accumulator; 116. Return pipe; 117. Cooling pipe; 118. Fixing frame; 119. Connecting pipe; 120. Drain pipe; 121. Transfer pipe; 122. Spiral pipe; 123. PLC controller. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4In this embodiment, a hydraulic stabilizing device for a roller press includes: an oil tank 1, a top cover 11 fixedly installed above the oil tank 1, an oil inlet 12 fixedly installed above the top cover 11, a motor 13 fixedly installed above the top cover 11, an oil pump 14 connected to the end of the shaft of the motor 13, an oil filter 15 fixedly installed inside the oil tank 1, an oil inlet pipe 16 fixedly installed at the outlet end of the oil pump 14, a valve body 17 fixedly installed at the end of the oil inlet pipe 16, a check valve 18 fixedly installed at the right end of the valve body 17, a directional valve 19 fixedly installed above the valve body 17, a throttle valve 110 fixedly installed above the valve body 17, a solenoid valve 111 fixedly installed above the throttle valve 110, and a feed valve 111 fixedly installed on the front side of the valve body 17. A hydraulic gauge 113 is fixedly installed at the front end of the outlet pipe 112. A support frame 114 is fixedly installed above the top cover 11. An accumulator 115 is fixedly installed inside the support frame 114. A return pipe 116 is fixedly installed on the left side of the valve body 17. A cooling pipe 117 is fixedly installed at the end of the return pipe 116. A fixing bracket 118 is fixedly installed on the outside of the cooling pipe 117. A connecting pipe 119 is fixedly installed above the cooling pipe 117. A drain pipe 120 is fixedly installed at the front end of the cooling pipe 117. A transfer pipe 121 is fixedly installed at both ends inside the cooling pipe 117. A spiral pipe 122 is fixedly installed between the transfer pipes 121. A PLC controller 123 is fixedly installed on the front side of the reversing valve 19.

[0027] The inlet of the oil pump 14 vertically penetrates the top cover 11 and is located inside the oil tank 1. The inlet of the oil pump 14 is connected to the oil filter 15. One end of the oil inlet pipe 16 is connected to the output end of the oil pump 14, and the other end is connected to the valve body 17 through the one-way valve 18. The reversing valve 19, the throttle valve 110, and the solenoid valve 111 are connected through the valve body 17. The front side of the valve body 17 is provided with two sets of symmetrical opening structures that communicate with the inner cavity. The accumulator 115 is fixedly connected to the top cover 11 through the support frame 114. The bottom end of the accumulator 115 communicates with the inner cavity of the valve body 17, and the accumulator 115 is located in front of the reversing valve 19. The valve body 17 is connected to the adapter pipe 121 at the rear end of the cooling pipe 117 through the return pipe 116. The connecting pipe 119 penetrates the pipe wall of the cooling pipe 117 and communicates with the inner cavity of the cooling pipe 117. The spiral pipe 122 is fixedly connected to the cooling pipe 117 through the adapter pipes 121 at both ends.

[0028] Specifically, the oil tank 1 can store a certain amount of hydraulic oil. The top cover 11 seals the top of the oil tank 1 and supports the motor 13. The motor 13 drives the oil pump 14 to draw out the hydraulic oil from the oil tank 1 and deliver it to the valve body 17 through the inlet pipe 16 and the check valve 18. After the hydraulic oil enters the valve body 17, it will be discharged from the corresponding output pipe 112 through a specific oil circuit under the restriction of the reversing valve 19. The hydraulic gauge 113 can monitor the oil pressure inside the corresponding pipe. The support frame 114 can restrict the position of the accumulator 115. The air bladder inside the accumulator 115 can discharge the hydraulic oil inside the accumulator 115 when the oil pressure inside the lower oil circuit decreases. The return pipe 116 facilitates the hydraulic oil inside the cylinder to enter the cooling pipe 117 for cooling. Pipe 117 facilitates the absorption of heat from the hydraulic oil by the cooling water, connecting pipe 119 facilitates the circulation of cooling water, and adapter pipe 121 facilitates the connection between spiral pipe 122 and return pipe 116. Spiral pipe 122 allows the hydraulic oil to move forward in a spiral shape into the drain pipe 120. Oil filter 15 is located at the bottom of the oil pump 14 inlet and the bottom of drain pipe 120, respectively, and can filter impurities in the hydraulic oil. PLC controller 123 is connected to hydraulic gauge 113 and solenoid valve 111 via cables. The model of PLC controller 123 is PR10, the model of hydraulic gauge 113 is SY-40, and the model of solenoid valve 111 is ZBSF. PLC controller 123 can control the opening and closing of solenoid valve 111 according to the monitoring data of hydraulic gauge 113.

[0029] In use, the valve body 17 is connected to the adapter pipe 121 at the rear end of the cooling pipe 117 via the return pipe 116. The connecting pipe 119 penetrates the wall of the cooling pipe 117 and communicates with the inner cavity of the cooling pipe 117. The spiral pipe 122 is fixedly connected to the cooling pipe 117 via the adapter pipes 121 at both ends. The cooling pipe 117 facilitates the absorption of heat from the hydraulic oil by the cooling water, the connecting pipe 119 facilitates the circulation of the cooling water, and the adapter pipe 121 facilitates the connection between the spiral pipe 122 and the return pipe 116. The spiral pipe 122 allows the hydraulic oil to move forward in a spiral shape into the drain pipe 120. This method allows the hydraulic oil to enter the cooling pipe 117 through the spiral pipe 122 before flowing back into the oil tank 1 through the drain pipe 120. The connecting pipes 119 on both sides above the cooling pipe 117 have one pipe entering the water and the other connecting to the water. Water flows out of pipe 119, creating a cooling water circulation inside cooling pipe 117. This allows the cooling water to absorb heat from the hydraulic oil, preventing the hydraulic oil from overheating. PLC controller 123 controls the opening and closing of solenoid valve 111 based on the monitoring data from hydraulic gauge 113. Accumulator 115 is fixedly connected to top cover 11 via support frame 114. The bottom end of accumulator 115 communicates with the inner cavity of valve body 17, and accumulator 115 is located in front of reversing valve 19. The air bladder inside accumulator 115 can discharge hydraulic oil from inside accumulator 115 when the oil pressure in the lower oil circuit decreases. Hydraulic gauge 113 monitors the oil pressure inside the corresponding pipe. When hydraulic gauge 113 detects a change in oil pressure in the pipe, it opens solenoid valve 111, causing the hydraulic oil inside accumulator 115 to flow back into the pipe to stabilize the pressure, thus preventing the hydraulic pressure of the roller press from becoming unstable.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic stabilizing device for a roller press, characterized in that, include: An oil tank (1) is provided, with a top cover (11) fixedly installed on top of the oil tank (1). An oil inlet (12) is fixedly installed on top of the top cover (11). A motor (13) is fixedly installed on top of the top cover (11). An oil pump (14) is connected to the end of the shaft of the motor (13). An oil filter (15) is fixedly installed inside the oil tank (1). An oil inlet pipe (16) is fixedly installed at the outlet end of the oil pump (14). A valve body (17) is fixedly installed at the end of the oil inlet pipe (16). A check valve (18) is fixedly installed on the right end of the valve body (17). A reversing valve (19) is fixedly installed on top of the valve body (17). A throttle valve (110) is fixedly installed on top of the valve body (17). A solenoid valve (111) is fixedly installed on top of the throttle valve (110). An output pipe (112) is fixedly installed on the front side of the valve body (17). A hydraulic gauge (113) is fixedly installed at the front end of the output pipe (112). A support frame (114) is fixedly installed above the top cover (11). An accumulator (115) is fixedly installed inside the support frame (114). A return pipe (116) is fixedly installed on the left side of the valve body (17). A cooling pipe (117) is fixedly installed at the end of the return pipe (116). A fixing frame (118) is fixedly installed on the outside of the cooling pipe (117). A connecting pipe (119) is fixedly installed above the cooling pipe (117). A drain pipe (120) is fixedly installed at the front end of the cooling pipe (117). A transfer pipe (121) is fixedly installed at both ends inside the cooling pipe (117). A spiral pipe (122) is fixedly installed between the transfer pipes (121). A PLC controller (123) is fixedly installed on the front side of the reversing valve (19).

2. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: The inlet of the oil pump (14) is vertically penetrating the top cover (11) and located inside the oil tank (1), and the inlet of the oil pump (14) is connected to the oil filter (15).

3. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: One end of the oil inlet pipe (16) is connected to the output end of the oil pump (14), and the other end is connected to the valve body (17) through the one-way valve (18). The reversing valve (19), the throttle valve (110), and the solenoid valve (111) are connected through the valve body (17).

4. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: The valve body (17) has two sets of symmetrical openings communicating with the inner cavity on its front side. The accumulator (115) is fixedly connected to the top cover (11) through the support frame (114).

5. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: The bottom end of the accumulator (115) is connected to the inner cavity of the valve body (17), and the accumulator (115) is located in front of the reversing valve (19).

6. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: The valve body (17) is connected to the adapter pipe (121) at the rear end of the cooling pipe (117) through the return pipe (116), and the connecting pipe (119) penetrates the wall of the cooling pipe (117) and is connected to the inner cavity of the cooling pipe (117).

7. The hydraulic stabilizing device for a roller press according to claim 1, characterized in that: The spiral tube (122) is fixedly connected to the cooling tube (117) through the adapter tubes (121) at both ends.

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