Mechanical seal detection device

Abstract

The utility model belongs to the field of mechanical seal, and discloses a mechanical seal detection device, which comprises a working table, a servo motor, a mounting frame and a rotating rod, the working table is connected with the servo motor and the mounting frame, the rotating rod is rotatably connected with the working table, an output shaft of the servo motor is connected with the rotating rod, the rotating rod is in threaded connection with a fixed disc, the fixed disc is provided with a containing groove, and the fixed disc is connected with a sealing pipe. The fixing disc is connected with a supporting frame, the supporting frame is connected with universal wheels, the universal wheels abut against the workbench, the mounting frame is connected with an air cylinder and a pneumatic pump, an output shaft of the air cylinder is in threaded connection with a plugging head, the plugging head is connected with an air inlet pipe, the air inlet pipe is rotationally connected with a connector, and the pneumatic pump is connected with an inflation pipe. According to the technical scheme, the situation that the fixed disc inclines relative to the rotating shaft is avoided, so that the fixed disc can rotate and be used in a horizontal state all the time, the detection effect on the subsequent sealing element is improved, and the practicability is greatly improved; and the plugging head and the fixing disc can be independently replaced and overhauled, the overhauling efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal detection device. Background Art

[0002] Mechanical seal is a shaft sealing device for rotating machinery, such as centrifuges, centrifugal pumps, reactors, compressors and other equipment. Since the transmission shaft runs through the inside and outside of the equipment, there is a certain circumferential gap between the shaft and the equipment. The medium in the equipment will leak out through the gap, and the external gas will enter the equipment through the gap. Therefore, a mechanical shaft sealing device is required, and the mechanical seal needs to be detected and processed by a mechanical seal detection device;

[0003] For example, the Chinese utility model (publication number CN220366969U) discloses a mechanical seal detection device, including a workbench, a rotating column, a fixed tool, a circular positioning plate, a sealing tube, a pressure gauge, a cylinder and other structures. This technical solution is achieved by setting up a rotatable fixed tool, on which multiple mechanical seals can be loaded. The sealing performance of multiple mechanical seals can be tested at one time, which is efficient, shortens the detection time, and solves the problem of low efficiency of traditional detection devices.

[0004] However, the above technical solution still has the following technical problems when used in practice: the above solution only supports the circular positioning disk by the rotating column, and the supporting position is located at the center of the circular positioning disk, and when the cylinder drives the sealing head to press down the upper end of the closed seal, in order to achieve the specified sealing effect, a large pressure is generally applied to the seal, and the seal is placed at the edge of the circular positioning disk. This part of the pressure is transmitted to the circular positioning disk, which is equivalent to the cylinder driving the sealing head to apply a pressure to the edge of the circular positioning disk. At this time, since the circular positioning disk is only supported by the rotating column, the circular positioning disk is very likely to tilt and offset relative to the rotating column when the edge is under great pressure, and the connection between the circular positioning disk and the rotating column is changed or even disconnected from the rotating column, which makes it impossible to accurately detect and process the seal later, making it inconvenient to use and having poor practicality. Utility Model Content

[0005] The utility model aims to provide a mechanical seal detection device to solve the problems raised in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A mechanical seal detection device comprises a workbench, the workbench is connected to a servo motor and a mounting frame, the workbench is rotatably connected to a rotating rod, the servo motor output shaft is connected to the rotating rod, the rotating rod is threadedly connected to a fixed disk, the fixed disk is provided with a receiving groove, the fixed disk is connected to a sealing tube, the fixed disk is connected to a support frame, the support frame is connected to a universal wheel, the universal wheel is in conflict with the workbench, the receiving groove and the support frame are respectively provided with a plurality of groups, the mounting frame is connected to a cylinder and an air pressure pump, the cylinder output shaft is threadedly connected to a sealing head, the sealing head is connected to an air intake pipe, the air intake pipe is rotatably connected to a connecting head, the air pressure pump is connected to an air pumping pipe, and the connecting head is threadedly connected to the air pumping pipe.

[0008] Preferably, the sealing tube is connected to a pressure gauge.

[0009] Preferably, the rotating rod is connected with a locking block, the workbench is slidably connected with a locking frame, the locking frame is provided with a locking slot, and the locking slot cooperates with the locking block.

[0010] Preferably, the side wall of the accommodating groove is threadedly connected with a threaded rod, the threaded rod is rotatably connected with a fixing plate, and the fixing plate is in contact with the side wall of the accommodating groove.

[0011] Compared with the prior art, this technical solution produces the following beneficial effects:

[0012] (1) The technical solution sets up a support frame, which is located at the lower side of the sealing tube. The support frame and the rotating rod jointly support the fixed disk. The pressure of the sealing head on the fixed disk can be directly transmitted to the workbench through the support frame, avoiding the fixed disk from tilting relative to the rotating axis, so that the fixed disk can always be rotated and used in a horizontal state, thereby improving the detection effect of subsequent sealing parts and greatly improving practicality; at the same time, the fixed disk and the sealing head can be quickly dismantled, and can be replaced and repaired separately, thereby improving maintenance efficiency and reducing maintenance costs. At the same time, it is easy to install and replace fixed disks and sealing heads with accommodating grooves of different sizes, so as to detect different sealing heads, improve the applicability of the device, and the overall structure is simple and easy to use.

[0013] (2) The technical solution can limit the rotation of the rotating rod through the cooperation of the locking block and the locking frame, which is convenient for quickly unscrewing the fixed plate; the rotating rod is directly connected to the servo motor, and there is no need to transmit it through transmission tools such as toothed chains, thereby reducing the mechanical structure and thus reducing the failure rate of the device, making the device structure simpler; the sealing member can be fixed in the receiving groove through the fixing plate, which is convenient for the sealing head to press down and seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front cross-sectional view of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 A top view of a partial cross-sectional view of the positioning block provided by the utility model;

[0017] Figure 4 A right side sectional view of the clamping frame provided by the utility model;

[0018] Figure 5 A top cross-sectional view of the threaded rod provided by the utility model;

[0019] Figure numerals: workbench 1, servo motor 2, support frame 3, mounting frame 4, fixed plate 5, sealing head 6, air inlet pipe 7, connecting head 8, air pressure pump 9, air pump pipe 10, cylinder 11, rotating rod 12, accommodating groove 13, fixed plate 14, threaded rod 15, sealing tube 16, pressure gauge 17, universal wheel 18, positioning block 19, positioning frame 20, and positioning slot 21. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0021] like Figures 1 to 5 The mechanical seal detection device shown in the figure includes a workbench 1, the workbench 1 is connected to a servo motor 2 and a mounting frame 4, the workbench 1 is rotatably connected to a rotating rod 12, the output shaft of the servo motor 2 is connected to the rotating rod 12, the top of the rotating rod 12 is threadedly connected to a fixed disk 5, the fixed disk 5 is a circular disk, the fixed disk 5 is provided with a receiving groove 13, the fixed disk 5 is connected to a sealing tube 16, the sealing tube 16 is located at the bottom of the receiving groove 13, the fixed disk 5 is connected to a supporting frame 3, the supporting frame 3 is connected to a universal wheel 18, and the universal wheel 18 is connected to the The workbench 1 is in conflict, and the accommodating grooves 13, the supporting frame 3 and the sealing tube 16 are respectively provided with several groups, and several groups of accommodating grooves 13, the supporting frame 3 and the sealing tube 16 cooperate with each other one by one, and several groups of accommodating grooves 13 are evenly arranged in a ring shape with the center of the fixed disk 5 as the center, and the mounting frame 4 is connected with the cylinder 11 and the air pressure pump 9, and the output shaft of the cylinder 11 is threadedly connected with the sealing head 6, and the sealing head 6 is connected with the air intake pipe 7, and the air intake pipe 7 is rotatably connected with the connecting head 8, and the air pressure pump 9 is connected with the air pumping pipe 10, and the connecting head 8 is threadedly connected with the air pumping pipe 10.

[0022] The sealing tube 16 is connected to a barometer 17, the rotating rod 12 is connected to a locking block 19, the workbench 1 is slidably connected to a locking frame 20, the locking frame 20 can slide left and right along the workbench 1, the locking frame 20 is provided with a locking groove 21, the locking groove 21 cooperates with the locking block 19, the locking block 19 can be inserted into the locking groove 21, the side wall of the accommodating groove 13 is threadedly connected to a threaded rod 15, the threaded rod 15 is rotatably connected to a fixed plate 14, and the fixed plate 14 is in conflict with the side wall of the accommodating groove 13.

[0023] The specific implementation process is as follows:

[0024] When in use, the mechanical seal to be tested is placed in the corresponding receiving groove 13 in turn, and the corresponding threaded rod 15 is screwed to drive the fixing plate 14 to move, thereby fixing the mechanical seal in the receiving groove 13. The lower end of the receiving groove 13 is sealed by the sealing tube 16. Similarly, the lower end of the mechanical seal is also closed by the sealing tube 16. At this time, the positioning frame 20 is slid to the right to make the positioning block 19 slide out of the slot 21, and the rotating rod 12 can rotate freely. Then the servo motor 2 is started to drive the rotating rod 12 to rotate, thereby rotating the fixed disk 5, and rotating the corresponding mechanical seal to the lower part of the blocking block. Then the cylinder 11 is started to drive the blocking block to move downward, so that the blocking head 6 contacts the upper end of the mechanical seal to complete the sealing of the upper end of the mechanical seal. , the mechanical seal and the sealing tube 16 can be regarded as a whole, and the pressure of the sealing head 6 on the mechanical seal is transmitted to the ground through the fixed plate 5, the support frame 3, and the workbench 1 to prevent the fixed plate 5 from tilting or offsetting; then start the air pressure pump 9 to supply air to the sealing head 6 through the air pump 10 and the air inlet pipe 7, and the gas enters the mechanical seal and can generate pressure on the sealing tube 16, which in turn causes the value of the pressure gauge 17 to change. The sealing judgment can be completed by observing the change in the value of the pressure gauge 17. After the inspection of one mechanical seal is completed, the sealing head 6 is moved up, and the servo motor 2 drives the fixed plate 5 to rotate a certain angle again, so that the next mechanical seal to be inspected is turned to the bottom of the sealing head 6, and the inspection is performed again according to the above steps.

[0025] When the fixing disk 5 and the plugging head 6 need to be replaced, slide the locking frame 20 to the left so that the locking block 19 slides into the locking groove 21. At this time, the rotating rod 12 cannot be easily rotated, and the fixing disk 5 can be directly twisted to complete the disassembly; when removing the plugging head 6, first twist the connecting head 8 to release the connection between the connecting head 8 and the air pump 10, and then twist the plugging head 6 to complete the disassembly, and the same applies to the installation.

[0026] The present technical solution provides a support frame 3, which is located at the lower side of the sealing tube 16. The support frame 3 and the rotating rod 12 jointly support the fixed disk 5. The pressure of the plugging head 6 on the fixed disk 5 can be directly transmitted to the workbench 1 through the support frame 3, thereby avoiding the fixed disk 5 from tilting relative to the rotating axis, so that the fixed disk 5 can always be used in a horizontal state, thereby improving the detection effect of subsequent sealing parts and greatly improving practicality. At the same time, the fixed disk 5 and the plugging head 6 can be quickly dismantled, and can be replaced and repaired separately, thereby improving the repair efficiency and reducing the maintenance cost. At the same time, it is convenient to install and replace the fixed disk 5 and the sealing head 6 with different sizes of accommodating grooves 13, so as to detect different sealing heads, improve the applicability of the device, and the overall structure is simple and easy to use; the rotation of the rotating rod 12 can be limited by the cooperation of the positioning block 19 and the positioning frame 20, so that the fixed disk 5 can be quickly unscrewed; the rotating rod 12 is directly connected to the servo motor 2, and there is no need to transmit through transmission tools such as toothed chains, thereby reducing the mechanical structure, thereby reducing the failure rate of the device and making the device structure simpler; the fixing plate 14 is convenient for fixing the seal in the accommodating groove 13, so that the sealing head 6 is pressed down for sealing.

[0027] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A mechanical seal detection device, characterized in that: The invention comprises a workbench (1), wherein the workbench (1) is connected to a servo motor (2) and a mounting frame (4), wherein the workbench (1) is rotatably connected to a rotating rod (12), wherein an output shaft of the servo motor (2) is connected to the rotating rod (12), wherein the rotating rod (12) is threadedly connected to a fixed disk (5), wherein the fixed disk (5) is provided with a receiving groove (13), wherein the fixed disk (5) is connected to a sealing tube (16), wherein the fixed disk (5) is connected to a supporting frame (3), wherein the supporting frame (3) is connected to a universal wheel (1 8), the universal wheel (18) is in conflict with the workbench (1), the containing groove (13) and the supporting frame (3) are respectively provided with a plurality of groups, the mounting frame (4) is connected with a cylinder (11) and an air pressure pump (9), the output shaft of the cylinder (11) is threadedly connected with a plugging head (6), the plugging head (6) is connected with an air intake pipe (7), the air intake pipe (7) is rotatably connected with a connecting head (8), the air pressure pump (9) is connected with an air pumping pipe (10), and the connecting head (8) is threadedly connected with the air pumping pipe (10).

2. A mechanical seal detection device according to claim 1, characterized in that: The sealing tube (16) is connected to a pressure gauge (17).

3. A mechanical seal detection device according to claim 1, characterized in that: The rotating rod (12) is connected to a locking block (19), the workbench (1) is slidably connected to a locking frame (20), the locking frame (20) is provided with a locking slot (21), and the locking slot (21) and the locking block (19) cooperate with each other.

4. A mechanical seal detection device according to claim 1, characterized in that: The side wall of the containing groove (13) is threadedly connected with a threaded rod (15), and the threaded rod (15) is rotatably connected with a fixing plate (14), and the fixing plate (14) is in contact with the side wall of the containing groove (13).

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