A mining high pressure three-way valve end face sealing mechanism

Abstract

The present invention discloses an end face sealing mechanism of a high-pressure three-way valve for mining, comprising a frame, an S-shaped swing pipe, a positioning ring, a swing support shaft, a glasses plate, an annular oil cylinder, a fixing part, and a swing power shaft; the frame is provided with a parallel front plate and a rear plate, and the glasses plate and the S-shaped swing pipe are mounted on the frame; the positioning ring is mounted on the glasses plate, the S-shaped swing pipe passes through the positioning ring, and the annular oil cylinder is mounted on the S-shaped swing pipe through a fixing part; the annular oil cylinder comprises an annular part cavity body, an annular oil cylinder piston rod, an end face sealing gasket and a compression spring; a rubber spring is provided between the top of the annular cavity body and the fixing part; the swing power shaft is fixedly connected to the fixing part. The present invention can simply adjust the sealing condition of the S-shaped swing pipe and the glasses plate by installing the annular oil cylinder on the S-shaped swing pipe, has good sealing performance, does not damage the glasses plate during reversing, and has low processing cost and operation cost.

Description

Technical Field

[0001] The invention relates to the field of mining equipment, and in particular to an end face sealing mechanism of a high-pressure three-way valve for mining. Background Art

[0002] The high-pressure three-way swing valve commonly used in mining equipment, after the three-way swing valve swings into place, the alloy end face of the S-shaped swing pipe and the alloy end face of the eyeglass plate are closely matched to form an end face seal, and then the paste is transported to another conveying pipeline. However, in actual operation practice, it is found that many practical problems are difficult to solve:

[0003] The flatness of the two alloy planes is a great difficulty for processing and assembly. In theory, the higher the flatness requirement, the better the sealing effect. However, for the end face seal of paste delivery, what kind of requirement is the best, especially under high pressure, it is not easy to find an accurate standard. Even if the standard is found, whether the requirements can be met during assembly is another test, because there are certain errors in assembly. The cost of processing and assembly will be very high, and the effect is not very good; if the end face seal leaks, the paste delivered under high pressure will easily overflow, causing industrial accidents; the end face seal is in contact and sliding under the pressure of the rubber spring. After a long time, the contact surface will wear quickly, and the workload of replacing wearing parts will be very large. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a mining high-pressure three-way valve end face sealing mechanism, which is used in mining operations, has good sealing performance, and less damage to eyeglass plates during switching.

[0005] The technical solution provided by the present invention is as follows:

[0006] A mining high-pressure three-way valve end face sealing mechanism comprises a frame, an S-shaped swing pipe, a positioning ring, a swing support shaft, a spectacle plate, an annular oil cylinder, a fixing part, and a swing power shaft;

[0007] The frame is provided with a parallel front plate and a rear plate, the glasses plate is mounted on the front plate, one end of the S-shaped swing tube is mounted on the rear plate of the frame, the end surface of the other end of the S-shaped swing tube is tightly matched with the glasses plate, and the swing support shaft is fixedly connected to the front plate and the rear plate;

[0008] The locating ring is installed on the eyeglass plate, the locating ring is provided with a through hole, the S-shaped swing pipe passes through the locating ring, the annular oil cylinder is installed on one end of the S-shaped swing pipe that is closely matched with the eyeglass plate through a fixing piece, and the bottom of the annular oil cylinder is located in the through hole of the locating ring;

[0009] The annular oil cylinder comprises an annular cavity body, an annular oil cylinder piston rod, an end face sealing gasket and a compression spring;

[0010] An oil inlet and an oil outlet are provided on the side of the annular cavity body, the annular cylinder piston rod is installed in the annular cavity body, the piston end of the annular cylinder piston rod cooperates with the end face sealing gasket at the bottom of the annular cavity body, a stop structure is provided on the annular cylinder piston rod, the annular cylinder piston rod is sleeved with the compression spring, and the two ends of the compression spring are respectively in contact with the stop structure and the top surface of the cavity in the annular cavity body;

[0011] A rubber spring is provided between the top of the annular cavity body and the fixing member;

[0012] The swing power shaft is fixedly connected to the fixing member.

[0013] Wherein, the fixing piece is provided with an internal threaded through hole at a position corresponding to the piston rod of the annular oil cylinder, and an adjusting bolt is installed in the internal threaded through hole, and the adjusting bolt is in contact with the top of the piston rod of the annular oil cylinder.

[0014] Wherein, the bottom surface of the annular oil cylinder is also provided with an annular oil ring inner ring alloy surface, which closely matches the eyeglass plate.

[0015] Among them, the outer edge of the annular oil ring inner ring alloy surface is also provided with an annular oil cylinder outer ring alloy surface, which is closely matched with the eyeglass plate.

[0016] Among them, the number of the annular cylinder piston rods is more than four, the number of the adjusting bolts is more than four, and the number of the annular cylinder piston rods is equal to the number of the adjusting bolts.

[0017] Wherein, the annular cylinder piston rods are arranged equidistantly in the annular cavity main body.

[0018] Wherein, the end face sealing gasket is provided with a convex block, and the convex block contacts the bottom surface of the annular oil cylinder piston rod.

[0019] Wherein, the annular oil cylinder piston rod is a three-step piston rod, and each step is provided with a stop structure.

[0020] Wherein, a mounting mechanism is provided on the S-shaped swing pipe, and the fixing member is fixedly connected to the mounting mechanism by bolts.

[0021] The invention provides a mining high-pressure three-way valve end face sealing mechanism, which can simply adjust the sealing condition between the S-shaped swing pipe and the eyeglass plate by installing an annular oil cylinder on the S-shaped swing pipe, has good sealing performance, and will not damage the eyeglass plate during switching.

[0022] The flatness of the sealing end face of the present invention does not need to be very high, which reduces the processing cost. The flexible seal can increase the reliability and safety of the seal. The active sealing of the end face is a sealing method without energy consumption, which saves operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a schematic structural diagram of a glasses plate according to an embodiment;

[0025] Figure 2 This is a schematic structural diagram of an end face sealing mechanism of a high pressure three-way valve for mining use in an embodiment;

[0026] Figure 3 It is an enlarged cross-sectional view of the annular oil cylinder;

[0027] In the figure, 1-frame, 2-S-shaped swing pipe, 3-positioning ring, 4-swing support shaft, 5-annular cylinder, 6-spectacles plate, 7-fixing part, 8-swing power shaft, 9-rubber spring, 51-shaped cavity body, 52-annular cylinder piston rod, 53-end face sealing gasket, 54 compression spring, 55-annular oil ring inner ring alloy surface, 56-annular cylinder outer ring alloy surface. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only 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 the field without creative work are within the scope of protection of the present invention.

[0029] The embodiments of the present invention are written in a progressive manner.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a mining high-pressure three-way valve end face sealing mechanism includes a frame 1, an S-shaped swing pipe 2, a positioning ring 3, a swing support shaft 4, an annular oil cylinder 5, a spectacle plate 6, a fixing part 7, and a swing power shaft 8;

[0031] The frame 1 is provided with a parallel front plate and a rear plate, the eyeglass plate 6 is mounted on the front plate, one end of the S-shaped swing tube 2 is mounted on the rear plate of the frame 1, the end surface of one end of the S-shaped swing tube 2 is tightly matched with the eyeglass plate 6, and the swing support shaft 4 is fixedly connected to the front plate and the rear plate;

[0032] The positioning ring 3 is installed on the eyeglass plate 6, and the positioning ring 3 is provided with a through hole, and the S-shaped swing pipe 2 passes through the positioning ring 3. The annular oil cylinder 5 is installed on one end of the S-shaped swing pipe 2 that is tightly matched with the eyeglass plate 6 through a fixing member 7, and the bottom of the annular oil cylinder 5 is located in the through hole 3 of the positioning ring;

[0033] The annular oil cylinder 5 comprises an annular cavity body 51, an annular oil cylinder piston rod 52, an end face sealing gasket 53 and a compression spring 54;

[0034] An oil inlet and an oil outlet are provided on the side of the annular cavity body 51, and the annular cylinder piston rod 52 is installed in the annular cavity body 51. The piston end of the annular cylinder piston rod 52 cooperates with the end face sealing gasket 53 at the bottom of the annular cavity body 51. A stop structure is provided on the annular cylinder piston rod 52, and the compression spring 54 is sleeved on the annular cylinder piston rod. The two ends of the compression spring 54 are in contact with the stop structure and the top surface of the cavity in the annular cavity body 51 respectively.

[0035] A rubber spring 9 is provided between the top of the annular cavity body 51 and the fixing member 7;

[0036] The swing power shaft 8 is fixedly connected to the fixing member 7 .

[0037] When the annular cylinder 5 is installed at one end of the S-shaped swing tube 2, due to the action of the rubber spring, the end face sealing gasket 53 of the annular cylinder is sealed and matched with the alloy working surface of the eyeglass plate 6. When reversing, a certain oil pressure is given to the annular cylinder 5 to overcome the compression spring pressure to reduce the friction between the end face sealing gasket 53 and the alloy working surface of the eyeglass plate 6. At this time, the direction is turned again to avoid the end face sealing gasket 53 being scratched by the hardened paste during the reversing process.

[0038] Preferably, the fixing member 7 is provided with an internal threaded through hole corresponding to the position of the annular cylinder piston rod 52, and an adjusting bolt is installed in the internal threaded through hole. The adjusting bolt contacts the top of the annular cylinder piston rod 52, and the adjusting bolt can be adjusted according to the operational needs, thereby adjusting the matching condition between the annular cylinder and the eyeglass plate 6.

[0039] Preferably, the bottom surface of the annular oil cylinder 5 is also provided with an annular oil ring inner ring alloy surface 55, which closely cooperates with the eyeglass plate 6, and the outer edge of the annular oil ring inner ring alloy surface 55 is also provided with an annular oil cylinder outer ring alloy surface 56, which closely cooperates with the eyeglass plate and performs reversing movement to provide the end face sealing gasket 53 with a relatively flat and clean sealing surface.

[0040] Preferably, the number of the annular cylinder piston rods 52 is four or more, the number of the adjusting bolts is four or more, and the number of the annular cylinder piston rods 52 is equal to the number of the adjusting bolts. Preferably, the number of the annular cylinder piston rods 52 is 8, 12 or 16.

[0041] Preferably, the annular cylinder piston rods 52 are arranged equidistantly in the annular cavity main body.

[0042] Preferably, a bump is provided on the end face sealing gasket 53 , and the bump contacts the bottom surface of the annular cylinder piston rod 52 .

[0043] Preferably, the annular cylinder piston rod 52 is a three-step piston rod, and each step is provided with a limit structure. Different springs can be selected to adjust the pressure of the annular cylinder according to operational requirements.

[0044] Preferably, a mounting mechanism is provided on the S-shaped swing pipe 2, and the fixing member 7 is fixedly connected to the mounting mechanism by bolts.

[0045] In the actual use environment, the sealing effect pressure of the end face sealing gasket 53 is calculated by the design to obtain a theoretical value, and the best sealing effect can be achieved by compressing the spring 54 and adjusting the bolts during debugging and operation, and it can be adapted to the high-pressure three-way valve device for mining.

[0046] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mining high pressure three-way valve end face sealing mechanism, characterized in that: It comprises a frame (1), an S-shaped swing pipe (2), a positioning ring (3), a swing support shaft (4), a spectacle plate (6), an annular oil cylinder (5), a fixing member (7), and a swing power shaft (8); The frame (1) is provided with a parallel front plate and a rear plate, the eyeglass plate (6) is mounted on the front plate, one end of the S-shaped swing tube (2) is mounted on the rear plate of the frame (1), the end surface of the other end of the S-shaped swing tube (2) is tightly matched with the eyeglass plate (6), and the swing support shaft (4) is fixedly connected to the front plate and the rear plate; The locating ring (3) is mounted on the eyeglass plate (6), the locating ring (3) is provided with a through hole, the S-shaped swing pipe (2) passes through the locating ring (3), the annular oil cylinder (5) is mounted on one end of the S-shaped swing pipe (2) tightly fitting with the eyeglass plate (6) through a fixing member (7), and the bottom of the annular oil cylinder (5) is located in the through hole of the locating ring (3); The annular oil cylinder (5) comprises an annular cavity body (51), an annular oil cylinder piston rod (52), an end face sealing gasket (53) and a compression spring (54); An oil inlet and an oil outlet are provided on the side of the annular cavity body (51); the annular cylinder piston rod (52) is installed in the annular cavity body (51); the piston end of the annular cylinder piston rod (52) cooperates with the end face sealing gasket (53) at the bottom of the annular cavity body (51); a stop structure is provided on the annular cylinder piston rod (52); the annular cylinder piston rod (52) is sleeved with the compression spring (54); the two ends of the compression spring (54) are respectively in contact with the stop structure and the top surface of the cavity in the annular cavity body (51); A rubber spring (9) is provided between the top of the annular cavity body (51) and the fixing member (7); The swing power shaft (8) is fixedly connected to the fixing member (7); The fixing member (7) is provided with an internal threaded through hole at a position corresponding to the annular oil cylinder piston rod (52), an adjusting bolt is installed in the internal threaded through hole, and the adjusting bolt is in contact with the top of the annular oil cylinder piston rod (52); The bottom surface of the annular oil cylinder (5) is also provided with an annular oil ring inner ring alloy surface (55) which closely matches the eyeglass plate (6); The outer edge of the annular oil ring inner ring alloy surface (55) is also provided with an annular oil cylinder outer ring alloy surface (56) which closely matches the eyeglass plate (6); The number of the annular cylinder piston rods (52) is more than four, the number of the adjusting bolts is more than four, and the number of the annular cylinder piston rods (52) is equal to the number of the adjusting bolts; The annular oil cylinder piston rods (52) are arranged at equal distances within the annular cavity body.

2. The end face sealing mechanism of the high pressure three-way valve for mining as claimed in claim 1, characterized in that: The end face sealing gasket (53) is provided with a protrusion, and the protrusion contacts the bottom surface of the annular oil cylinder piston rod (52).

3. The end face sealing mechanism of the high pressure three-way valve for mining as claimed in claim 2, characterized in that: The annular oil cylinder piston rod (52) is a three-step piston rod, and each step is provided with a stop structure.

4. The end face sealing mechanism of the high pressure three-way valve for mining as claimed in claim 3, characterized in that: The S-shaped swing pipe (2) is provided with a mounting mechanism, and the fixing member (7) is fixedly connected to the mounting mechanism via bolts.

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