Hydraulic valve group with sealing detection function

Abstract

The invention provides a hydraulic valve bank with a sealing detection function, which belongs to the technical field of hydraulic valve banks and comprises a valve block, a plurality of valve bodies, a sealing box and a cooling block, according to the hydraulic system, leaked hydraulic oil is temporarily stored through the arranged sealing assembly, so that the situation that the hydraulic oil flows out from a leakage point to the outer side irregularly and unlimitedly to pollute the surrounding environment is avoided, the leaked hydraulic oil is pushed back through the compensation assembly, and part of the leaked hydraulic oil returns to the hydraulic system again; in this way, pressure loss of the hydraulic system is reduced, the alarm assembly gives an alarm when the sealing assembly and the compensation assembly reach the maximum bearing capacity, secondary leakage of the sealing assembly is avoided, the cooling assembly enables all parts of hydraulic oil to be in uniform contact, cooling uniformity is guaranteed, and the service life of the hydraulic system is prolonged. A plurality of through holes are formed in the cooling block to accelerate the cooling process, so that over-high oxidation speed of hydraulic oil caused by over-high oil temperature is avoided, and the service life of the hydraulic oil is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic valve groups, and in particular to a hydraulic valve group with a sealing detection function. Background Art

[0002] A hydraulic valve group, also known as a hydraulic valve station or hydraulic valve table, is a group of valves used to control the flow direction, pressure and flow of fluid in a hydraulic system. These valves are combined together through integrated blocks or plate installation to facilitate modular and compact layout of the system.

[0003] In the prior art, during the assembly of the hydraulic valve group, the installation interface of the valve block and the valve body contact surface is generally sealed by a sealing ring to prevent leakage of the hydraulic oil. However, if the seal is damaged or loses its elasticity due to aging, it will cause leakage of the liquid. At the same time, improper torque during installation will also cause deformation or damage of the seal, resulting in a tiny gap between the contact surface of the valve body and the valve block, thereby causing leakage of the hydraulic oil. It is common to judge whether there is hydraulic leakage on the contact surface by visual inspection to see whether there are oil marks, oil stains or obvious oil flow on the contact surface, and by touching the suspected leaking area to determine whether it is wet to determine whether it is leaking. This detection method cannot continuously detect the sealing function during the operation of the hydraulic system, and cannot be determined in time when the hydraulic oil leaks. The maintenance personnel's untimely response to the inspection leads to excessive leakage of hydraulic oil, which causes the pressure of the hydraulic system to drop and affects the working efficiency of the system. How to invent a hydraulic valve group with a sealing detection function to solve these problems has become an urgent problem for technicians in this field. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a hydraulic valve group with a sealing detection function, aiming to solve the problem in the prior art that when hydraulic oil leaks, the maintenance personnel's untimely maintenance response affects the working efficiency of the system.

[0005] The present invention is achieved in that: The present invention provides a hydraulic valve group with a sealing detection function, comprising a valve block and a plurality of valve bodies arranged on the valve block, a sealing box and a cooling block, characterized in that the plurality of valve bodies are sealed and connected to the upper outer wall of the valve block through a sealing gasket arranged at the bottom end, and a slot is provided at the bottom of the valve body; Sealing assembly: A plurality of the sealing assemblies include a sealing box mounted on the upper outer wall of the valve block; Alarm assembly: A plurality of the alarm assemblies include a buzzer mounted above the sealing plate; Compensation components: multiple compensation components include a sealing block and a tooth plate installed on the inner wall of the sealing box; A cooling block; a plurality of cooling blocks are installed inside the sealed box; Preferably, a sealing frame is installed on one side of the sealing box, the outer wall of the sealing frame is plugged into the slot, a sealing strip is installed on the upper end of the sealing frame for sealing contact with the slot, and the sealing frame seals the space at the connection between the valve block and the valve body.

[0006] Preferably, a collecting port is provided at one end of the sealing box close to the collecting chamber, and a baffle is provided on the inner wall of the sealing box, which separates the interior of the sealing box into a compensation chamber and a collecting chamber, and a floating block is installed inside the collecting chamber. The density of the floating block is lower than that of the hydraulic oil, and a cavity for reducing weight is provided inside the floating block.

[0007] By adopting the above technical solution, when the hydraulic oil at the connection between the valve block and the valve body leaks, the hydraulic oil enters the collection chamber inside the sealing box through the collection port, and the leaked hydraulic oil is stored to prevent it from flowing out and causing waste.

[0008] Preferably, the alarm assembly includes a mounting bracket installed on the upper side of the sealing box and a sliding rod installed inside the collecting chamber, the lower end of the sliding rod is fixedly connected to the floating block, the outer wall of the sliding rod is slidably connected to the inner wall of the sealing box, a pressure sensor is installed on the top of the sliding rod, and a buzzer is installed on the upper end of the mounting bracket, and the output end of the pressure sensor and the input end of the buzzer are fixedly connected.

[0009] By adopting the above technical solution, when the liquid level of the hydraulic oil collected inside the collection chamber gradually rises, the slide rod moves upward with the float block and contacts the pressure sensor and mounting frame at its top. At this time, the internal collection chamber reaches its maximum load-bearing capacity, and the buzzer sounds an alarm to remind the staff to maintain the valve body at the leaking part in time.

[0010] Preferably, the compensation component includes two symmetrical ear plates installed at one end of the sealing box and a sliding sensor installed on the outer wall of the upper end of the sealing box close to the sliding rod, wherein a motor is installed on the outer wall of one of the ear plates, a gear shaft is installed between the two ear plates, and a first pulley is installed at one end of the gear shaft.

[0011] Preferably, one end of the sealing block is fixedly connected to one end of the tooth plate, one side of the tooth plate is meshingly connected to the gear shaft, the outer wall of the sealing block is sealingly and slidingly connected to the inner wall of the sealing box and the lower end of the baffle respectively, and the outer wall of the tooth plate is slidingly connected to the inner wall of the sealing box.

[0012] Preferably, the output end of the slip sensor is fixedly connected to the input end of the motor, the output end of the motor is fixedly connected to one end of a gear shaft, and both ends of the gear shaft are rotatably connected to the inner wall of the ear plate.

[0013] By adopting the above technical scheme, in the process of hydraulic oil leaking into the collecting chamber to float the float block, the slide rod rises and triggers the slide sensor to generate an electrical signal, controlling the motor to drive the gear shaft to rotate, and the meshing gear plate to move the sealing block into the collecting chamber, continuously compressing the hydraulic oil in the collecting chamber, and pushing it back into the leaking gap until one end of the sealing block is against the inner wall of the sealing box near the collecting port, thereby completing the re-compensation of the hydraulic oil leaked in the collecting chamber into the hydraulic system, thereby reducing the leakage of hydraulic oil in the system and reducing the pressure loss in the hydraulic system.

[0014] Preferably, the cooling block is installed inside the sealing box near the collecting port, and rotating shafts are installed at both ends of the cooling block, and a second pulley is installed at one end of one of the rotating shafts, and a transmission belt is connected between the second pulley and the first pulley.

[0015] Preferably, a plurality of through holes are provided on the surface of the cooling block, a cooling groove is provided on an outer wall of one side of the cooling block, the cooling groove divides the through holes into a plurality of small pipes fixed inside the groove body, the interior of the cooling groove is filled with a highly absorbent resin as a coolant, and a sealing plug is installed at the upper end opening of the cooling groove.

[0016] By adopting the above technical scheme, during the process of hydraulic oil leakage, the cooling medium filled in the cooling block cools the surface of the cooling block. At the same time, the surface of the cooling block contacts the hydraulic oil for heat exchange. The cooling medium absorbs heat to cool the hydraulic oil, thereby reducing the temperature of the hydraulic oil. When the leaked hydraulic oil is subsequently compensated, it is mixed with the hydraulic oil in the system to reduce the temperature of the hydraulic oil inside the system, thereby avoiding changes in throttling characteristics due to excessively high oil temperature, thereby ensuring the stability of the system speed.

[0017] The beneficial effects of the present invention are: The sealing component is set to temporarily store the leaked hydraulic oil, so as to prevent the hydraulic oil from flowing out irregularly and unrestrictedly from the leakage point to the outside and polluting the surrounding environment. The leaked hydraulic oil is pushed back by the compensation component, so that part of the leaked hydraulic oil returns to the hydraulic system again, thereby reducing the pressure loss of the hydraulic system. The alarm component alarms when the sealing component and the compensation component reach the maximum load-bearing capacity, so as to avoid secondary leakage of the sealing component; By setting up a cooling component, part of the cooled hydraulic oil can be returned to the hydraulic system, reducing the overall temperature inside the hydraulic system, thereby delaying the oxidation reaction of the hydraulic oil in the hydraulic system, thereby increasing the service life of the hydraulic valve group. Furthermore, the rotatable cooling block is continuously flipped so that every part of the coolant can be evenly contacted, ensuring the uniformity of cooling. At the same time, the multiple through holes opened on the cooling block help to increase the contact area between the hydraulic oil and the cooling block, thereby promoting faster heat exchange, thereby accelerating the cooling process and further increasing the service life of the hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention; Figure 2 It is an exploded diagram of the overall structure of a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a partial structure of a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention; Figure 4 A hydraulic valve group with a sealing detection function provided by the embodiment of the present invention Figure 3 A magnified view of the structure of the middle A area; Figure 5 It is a half-section diagram of the local structure of a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention; Figure 6 A hydraulic valve group with a sealing detection function provided by the embodiment of the present invention Figure 5 A magnified view of the structure of the middle B area; Figure 7 It is a schematic diagram of the open state of a hydraulic valve group collecting chamber with a sealing detection function provided in an embodiment of the present invention.

[0020] Figure 8 A hydraulic valve group with a sealing detection function provided by the embodiment of the present invention Figure 5 A magnified view of the structure of the middle C region; Fig. 9 It is a structural schematic diagram of a hydraulic valve group sealing box with a sealing detection function provided by an embodiment of the present invention; Fig.10A hydraulic valve group with a sealing detection function provided by the embodiment of the present invention Fig. 9 A magnified view of the structure of the middle D region; Fig.11 It is a schematic diagram of the structure of a cooling block in a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention; Fig.12 It is a half-section view of a cooling block structure in a hydraulic valve group with a sealing detection function provided by an embodiment of the present invention.

[0021] In the figure: 1. valve block; 2. valve body; 21. slot; 3. sealing gasket; 4. sealing box; 41. baffle; 411. compensation chamber; 412. collecting chamber; 413. ear plate; 42. collecting port; 43. motor; 44. gear shaft; 441. first pulley; 45. sealing block; 451. tooth plate; 46. sliding sensor; 47. mounting bracket; 471. buzzer; 48. sliding rod; 481. pressure sensor; 482. floating block; 49. sealing frame; 491. sealing strip; 5. cooling block; 51. through hole; 52. cooling tank; 53. sealing plug; 54. rotating shaft; 55. second pulley; 6. driving belt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1, refer to Figure 1-Figure 12 A hydraulic valve group with a sealing detection function comprises a valve block 1 and a plurality of valve bodies 2, a sealing box 4 and a cooling block 5 arranged on the valve block 1. The plurality of valve bodies 2 are sealed and connected to the upper outer wall of the valve block 1 through a sealing gasket 3 arranged at the bottom end, and a slot 21 is provided at the bottom of the valve body 2; a sealing assembly: the plurality of sealing assemblies comprises a sealing box 4 installed on the upper outer wall of the valve block 1; A sealing frame 49 is installed on one side of the sealing box 4. The outer wall of the sealing frame 49 is plugged into the slot 21. A sealing strip 491 is installed on the upper end of the sealing frame 49 to seal the space at the connection between the valve block 1 and the valve body 2. A collecting port 42 is provided at one end of the sealing box 4 close to the collecting chamber 412. A baffle 41 is provided on the inner wall of the sealing box 4. The baffle 41 separates the interior of the sealing box 4 into a compensation chamber 411 and a collecting chamber 412. A floating block 482 is installed inside the collecting chamber 412. The density of the floating block 482 is lower than that of the hydraulic oil. A cavity for reducing weight is provided inside the floating block 482. The previous hydraulic valve group with sealing detection function is to solve the problem that traditional hydraulic oil cannot be leaked centrally: The oil pipes on the multiple valve bodies 2 are inserted into the oil holes on the valve block 1 to be assembled into a hydraulic valve group. When the sealing ring at the connection between the valve block 1 and the valve body 2 wears and causes leakage, the leaked hydraulic oil enters the collecting chamber 412 inside the sealing box 4 through the collecting port 42 under the limiting action of the sealing frame 49, and the leaked hydraulic oil is temporarily stored, thereby preventing the hydraulic oil from flowing out irregularly and unrestrictedly from the leakage point to the outside and causing pollution to the surrounding environment.

[0024] The compensation component includes two symmetrical ear plates 413 installed at one end of the sealing box 4 and a slip sensor 46 installed on the outer wall of the upper end of the sealing box 4 near the slide rod 48, wherein the outer wall of one of the ear plates 413 is installed with a motor 43, a gear shaft 44 is installed between the two ear plates 413, a first pulley 441 is installed at one end of the gear shaft 44, one end of the sealing block 45 is fixedly connected to one end of a tooth plate 451, one side of the tooth plate 451 is meshedly connected to the gear shaft 44, the outer wall of the sealing block 45 is respectively sealed and slidably connected to the inner wall of the sealing box 4 and the lower end of the baffle 41, the outer wall of the tooth plate 451 is slidably connected to the inner wall of the sealing box 4, the output end of the slip sensor 46 is fixedly connected to the input end of the motor 43, the output end of the motor 43 is fixedly connected to one end of the gear shaft 44, and the two ends of the gear shaft 44 are rotatably connected to the inner wall of the ear plate 413.

[0025] In this embodiment, in order to prevent excessive leakage of hydraulic oil in the hydraulic system from causing a decrease in the working efficiency of the hydraulic system; When the hydraulic oil leaks into the collecting chamber 412 to float the float 482, the slide rod 48 rises and triggers the slide sensor 46 to generate an electrical signal. At this time, the motor 43 receives the signal to drive the gear shaft 44 to rotate, and engages the tooth plate 451 below to move the sealing block 45 into the collecting chamber 412. During the movement of the sealing block 45, the space in the collecting chamber 412 is continuously compressed, and the hydraulic oil flowing from the leakage point to the collecting port 42 is pushed back, so that part of the leaked hydraulic oil returns to the hydraulic system again, thereby reducing the pressure loss of the hydraulic system and avoiding excessive pressure loss causing a decrease in work efficiency.

[0026] In the second embodiment, the alarm assembly includes a mounting frame 47 mounted on the upper side of the sealing box 4 and a slide bar 48 mounted inside the collecting chamber 412, the lower end of the slide bar 48 is fixedly connected to the floating block 482, the outer wall of the slide bar 48 is slidably connected to the inner wall of the sealing box 4, a pressure sensor 481 is mounted on the top of the slide bar 48, a buzzer 471 is mounted on the upper end of the mounting frame 47, and the output end of the pressure sensor 481 is fixedly connected to the input end of the buzzer 471; In this embodiment, in order to prevent the leakage of hydraulic oil exceeding the critical value that the sealing component can withstand when the compensation component reaches the maximum compensation value, causing secondary leakage; As the liquid level of the hydraulic oil collected in the collecting chamber 412 gradually rises, the slide bar 48 slides simultaneously with the upward floating of the float block 482. When the pressure sensor 481 at the top of the slide bar 48 contacts the mounting bracket 47, the upper side wall of the float block 482 and the top of the collecting chamber 412 are pressed against each other and reach the maximum load-bearing capacity of the collecting chamber 412. At this time, the compensation component reaches the maximum value of the compensation group. The pressure sensor 481 at the upper end of the slide bar 48 and the mounting bracket 47 are pressed against each other and generate a signal to be transmitted to the buzzer 471. At this time, the buzzer 471 receives the signal and sounds an alarm, reminding the staff to disassemble the valve body 2 at the leaking location and inspect the installation location in time, thereby avoiding secondary leakage of the sealing component.

[0027] In the third embodiment, the cooling block 5 is installed inside the sealing box 4 near the collecting port 42, and rotating shafts 54 are installed at both ends of the cooling block 5, wherein a second pulley 55 is installed at one end of one rotating shaft 54, and a transmission belt 6 is connected between the second pulley 55 and the first pulley 441 for transmission. A plurality of through holes 51 are provided on the surface of the cooling block 5, and a cooling groove 52 is provided on the outer wall of one side of the cooling block 5. The cooling groove 52 divides the through hole 51 into a plurality of small pipes fixed inside the groove body, and the interior of the cooling groove 52 is filled with a highly absorbent resin as a coolant, and a sealing plug 53 is installed at the upper end opening of the cooling groove 52.

[0028] In this embodiment, in order to prevent the hydraulic oil in the hydraulic system from being overheated and accelerating the aging of the hydraulic oil; When the leaked hydraulic oil enters the collecting chamber 412 through the collecting port 42, the hydraulic oil cools down the surface of the cooling block 5 through the cooling medium filled in the cooling block 5. The surface of the cooling block 5 contacts the hydraulic oil for heat exchange, and the cooling medium absorbs heat to cool down the hydraulic oil. By setting the cooling block 5, part of the cooled hydraulic oil can flow back into the hydraulic system, thereby reducing the overall temperature inside the hydraulic system. The through hole 51 provided in the cooling block 5 helps to increase the contact area between the hydraulic oil and the cooling block 5, thereby promoting faster heat exchange, thereby accelerating the cooling process. Furthermore, a pulley provided at one end of the cooling block 5 cooperates with the belt to rotate simultaneously with the movement of the sealing block 45. The rotating cooling block 5 is continuously turned over so that every part of the coolant can be evenly contacted, further ensuring the uniformity of cooling, thereby reducing the temperature of the hydraulic oil. When the leaked hydraulic oil is subsequently compensated, it is mixed with the hydraulic oil in the system to reduce the temperature of the hydraulic oil inside the system, avoid the hydraulic oil oxidation rate too fast due to the high oil temperature, thereby increasing the service life of the hydraulic oil.

[0029] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic valve group with a sealing detection function, comprising a valve block (1), a plurality of valve bodies (2) arranged on the valve block (1), a sealing box (4) and a cooling block (5), characterized in that: The plurality of valve bodies (2) are sealedly connected to the upper outer wall of the valve block (1) via a sealing gasket (3) provided at the bottom end, and a slot (21) is provided at the bottom of the valve body (2); Sealing assembly: a plurality of the sealing assemblies include a sealing box (4) mounted on the upper outer wall of the valve block (1); Compensation components: a plurality of the compensation components include a sealing block (45) and a tooth plate (451) mounted on the inner wall of the sealing box (4); Alarm assembly: a plurality of the alarm assemblies include a buzzer (471) mounted above the sealing plate; Cooling blocks (5); a plurality of cooling blocks (5) are installed inside the sealing box (4).

2. A hydraulic valve group with a sealing detection function according to claim 1, characterized in that: A sealing frame (49) is installed on one side of the sealing box (4); the outer wall of the sealing frame (49) is plugged into the slot (21); a sealing strip (491) is installed at the upper end of the sealing frame (49) for sealing contact with the slot (21); the sealing frame (49) seals the space at the connection between the valve block (1) and the valve body (2).

3. A hydraulic valve group with a sealing detection function according to claim 2, characterized in that: A collecting port (42) is provided at one end of the sealing box (4) close to the collecting chamber (412); a baffle (41) is provided on the inner wall of the sealing box (4); the baffle (41) separates the interior of the sealing box (4) into a compensation chamber (411) and a collecting chamber (412); a floating block (482) is installed inside the collecting chamber (412); the density of the floating block (482) is lower than that of hydraulic oil; and a cavity for reducing weight is provided inside the floating block (482).

4. The hydraulic valve group with sealing detection function according to claim 1, characterized in that: The compensation component comprises two symmetrical ear plates (413) mounted at one end of the sealing box (4) and a sliding sensor (46) mounted on the outer wall of the upper end of the sealing box (4) close to the sliding rod (48), wherein a motor (43) is mounted on the outer wall of one of the ear plates (413), a gear shaft (44) is mounted between the two ear plates (413), and a first pulley (441) is mounted on one end of the gear shaft (44).

5. The hydraulic valve group with sealing detection function according to claim 4, characterized in that: One end of the sealing block (45) is fixedly connected to one end of the tooth plate (451), one side of the tooth plate (451) is meshingly connected to the gear shaft (44), the outer wall of the sealing block (45) is sealingly slidably connected to the inner wall of the sealing box (4) and the lower end of the baffle (41), and the outer wall of the tooth plate (451) is slidably connected to the inner wall of the sealing box (4).

6. A hydraulic valve group with a sealing detection function according to claim 5, characterized in that: The output end of the slip sensor (46) is fixedly connected to the input end of the motor (43), the output end of the motor (43) is fixedly connected to one end of the gear shaft (44), and both ends of the gear shaft (44) are rotatably connected to the inner wall of the ear plate (413).

7. The hydraulic valve group with sealing detection function according to claim 1, characterized in that: The alarm assembly comprises a mounting frame (47) mounted on the upper side of the sealing box (4) and a sliding rod (48) mounted inside the collecting chamber (412); the lower end of the sliding rod (48) is fixedly connected to a floating block (482); the outer wall of the sliding rod (48) is slidably connected to the inner wall of the sealing box (4); a pressure sensor (481) is mounted on the top of the sliding rod (48); a buzzer (471) is mounted on the upper end of the mounting frame (47); and the output end of the pressure sensor (481) is fixedly connected to the input end of the buzzer (471).

8. The hydraulic valve group with sealing detection function according to claim 1, characterized in that: The cooling block (5) is installed inside the sealing box (4) near the collecting port (42), and rotating shafts (54) are installed at both ends of the cooling block (5), and a second pulley (55) is installed at one end of one of the rotating shafts (54), and a transmission belt (6) is connected between the second pulley (55) and the first pulley (441).

9. The hydraulic valve group with sealing detection function according to claim 8, characterized in that: The surface of the cooling block (5) is provided with a plurality of through holes (51), and an outer wall of one side of the cooling block (5) is provided with a cooling groove (52). The cooling groove (52) divides the through hole (51) into a plurality of small pipes fixed inside the groove body. The interior of the cooling groove (52) is filled with a highly absorbent resin as a coolant, and a sealing plug (53) is installed at the upper end opening of the cooling groove (52).

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