Adjustable cooling machine graphite sealing device

Abstract

The utility model discloses an adjustable cooling machine graphite sealing device which comprises a graphite packing, the graphite packing is tightly attached to a friction ring on a cylinder in the circumferential direction, the right side of the graphite packing is tightly attached to the left side of a fixed sealing flange, and screws are evenly distributed on the circumference of the upper portion of the left side of the fixed sealing flange. Adjustable sealing pressing plates are evenly distributed on the side, away from the barrel, of the graphite packing, a sealing pressing ring is arranged on the left side of the graphite packing, and the fixed sealing flange, the adjustable sealing pressing plates and the sealing pressing ring are connected together through screws. According to the sealing device, the contact surface between the barrel and the sealing device can be more uniform, sealing failure is prevented, the phenomenon of air leakage or ash leakage is reduced, the graphite packing is shrunk and adjusted after operation abrasion, the graphite packing is annularly and tightly attached to the barrel, and the sealing performance is better.

Description

Technical Field

[0001] The utility model relates to a graphite sealing device for a cooler, in particular to an adjustable graphite sealing device for a cooler. Background Art

[0002] Currently, cooling machine sealing devices often use contact seal flakes and graphite block seal structures. These structures have the following disadvantages: First, because the contact seal flake seal uses a hard friction seal, the contact surface between the sealing flakes and the cylinder is uneven, resulting in seal failure, easy wear of the flakes and cylinder, reduced service life, and high maintenance costs. Second, the graphite block seal cannot rotate flexibly due to heat deformation and the influence of dust accumulation. The graphite block cannot be well combined with the cylinder. The swing of the cylinder during rotation can cause local wear and severe damage to the graphite block, resulting in air leakage and material leakage, reducing equipment production efficiency and increasing maintenance costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the contact sealing scale form and the graphite block sealing structure in the prior art are not sealed tightly after being worn, thereby reducing the production efficiency of the equipment.

[0004] In order to solve the above technical problems, the present invention provides a technical solution:

[0005] An adjustable cooler graphite sealing device comprises a graphite packing which is circumferentially attached to a friction ring on a cylinder. The graphite packing has the characteristics of high temperature resistance, corrosion resistance, good sealing, self-lubrication and low friction coefficient.

[0006] The right side of the graphite packing is tightly attached to the left side of the fixed sealing flange, which is used to fix the sealing device on the inlet and outlet hoods. Screws are evenly distributed on the upper circumference of the left side of the fixed sealing flange, which are used to fix and limit the adjustment stroke of the adjustable sealing pressure plate during use.

[0007] Adjustable sealing pressure plates are evenly distributed on the outer ring surface of the graphite packing, and a sealing pressure ring is provided on the left side of the graphite packing. The graphite packing is fixed between the fixed sealing flange and the sealing pressure ring by using the screw, and a tensioning assembly is provided around the adjustable sealing pressure plate. Through the tensioning assembly and the adjustable sealing pressure plate, the graphite packing seal can be contracted and adjusted after operation wear, and the graphite packing can be tightly fitted to the cylinder, thereby achieving a better sealing effect.

[0008] Furthermore, the adjustable sealing pressure plate includes an arc-shaped plate, which is evenly distributed on the outer ring surface of the graphite packing. The arc-shaped plates are arranged in a one-to-one correspondence with the screw. The outer ring surface of each arc-shaped plate is provided with two guide plates symmetrically arranged on the left and right, and a guide plate groove is formed between the two guide plates. The arc-shaped plate is provided with an ear plate with an adjustment groove for adjusting the contraction at the outer position of the right guide plate. The free end of the screw passes through the adjustment groove and is connected to the sealing pressure ring, and the tensioning assembly is wound in the guide plate groove.

[0009] Furthermore, the arc-shaped plate is fixed to the graphite packing by fixing bolts, the curvature of the arc-shaped plate is consistent with the curvature of the graphite packing, and the curvature of the guide plate is consistent with the curvature of the arc-shaped plate.

[0010] Furthermore, the sealing pressure ring adopts a half-type structure and is arranged one-to-one with the arc plate to facilitate later maintenance. Each sealing pressure ring is provided with a connecting hole, and the connecting hole, adjustment groove and the screw are all on the same straight line. The free end of the screw passes through the adjustment groove and is fixed in the connecting hole with a nut.

[0011] Furthermore, the size of the adjusting groove is larger than the size of the screw rod, and during adjustment, the screw rod can move up and down in the adjusting groove.

[0012] Furthermore, the tensioning assembly includes a steel wire rope, a tension spring and an adjusting screw. After the steel wire rope is annularly wound around the graphite packing in the guide plate groove, its two ends hang down on the left and right sides of the graphite packing. The tension springs are provided on the steel wire ropes hanging down at both ends. The other end of each tension spring is provided with the adjusting screw. Each adjusting screw is fixed on the fixed frame. The tension spring is contracted and tightened by adjusting the screw, and then the tension spring is used to contract and tighten the adjustable sealing pressure plate evenly distributed around the circumference, so that the graphite packing can be tightly combined with the cylinder.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model utilizes tension springs to contract and tighten the circumferentially evenly distributed adjustable sealing pressure plates, which can adapt to radial changes when the cylinder moves up and down, making the contact surface between the cylinder and the sealing device more uniform, preventing seal failure, reducing air leakage or ash leakage, and realizing the contraction and adjustment of the graphite packing seal after operation wear, so that the graphite packing can be tightly fitted to the cylinder in the circumferential direction, and the sealing performance is better.

[0015] 2. The present invention utilizes a screw with a nut to adjust the gap between the sealing ring, the graphite packing and the fixed sealing flange, and can adjust the sealing device in the axial direction to improve its sealing performance.

[0016] 3. The graphite packing in this utility model has the characteristics of high temperature resistance, corrosion resistance, good sealing, self-lubrication and low friction coefficient. It can better lubricate the friction ring on the cylinder, is not prone to dry grinding, the formation of sealing scales and rapid wear of the friction ring, reduces the equipment failure maintenance rate, extends the service life, improves production efficiency and reduces maintenance costs.

[0017] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only partial schematic diagrams of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is an overall schematic diagram of an adjustable cooler graphite sealing device of the utility model (excluding the sealing pressure ring).

[0020] Figure 2 for Figure 1 Cross-sectional view in the AA direction (including the sealing ring).

[0021] In the figure, 1-graphite packing, 2-fixed sealing flange, 3-sealing pressure ring, 4-screw, 5-arc plate, 6-fixing bolt, 7-guide plate, 8-guide plate groove, 9-adjusting groove, 10-ear plate, 11-connecting hole, 12-nut, 13-wire rope, 14-tension spring, 15-adjusting screw. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0025] Example: Figure 1-2 As shown,

[0026] An adjustable cooler graphite sealing device includes a graphite packing 1, which is circumferentially attached to a friction ring on a cylinder. A fixed sealing flange 2 is fixed to a feed hood by bolts. The right side of the graphite packing 1 is attached to the left side of the fixed sealing flange 2. A sealing pressure ring 3 is provided on the left side of the graphite packing 1. Screws 4 are evenly welded around the upper left circumference of the fixed sealing flange 2.

[0027] Adjustable sealing pressure plates are evenly distributed on the outer ring surface of the graphite packing 1. The adjustable sealing pressure plates include arc-shaped plates 5, which are evenly distributed on the outer ring surface of the graphite packing 1. The arc-shaped plates 5 are fixed to the graphite packing 1 by fixing bolts 6. The arc-shaped plates 5 are arranged in a one-to-one correspondence with the screws 4. Two guide plates 7 are symmetrically arranged on the left and right sides of each arc-shaped plate 5 away from the graphite packing 1. A guide plate groove 8 for shrinking and adjusting the wire rope 13 is formed between the two guide plates 7. An ear plate 10 with an adjustment groove 9 for adjusting shrinkage is provided on the outer side of the right guide plate 7 on the arc-shaped plate 5.

[0028] The sealing pressure ring 3 adopts a half-type structure and is arranged one-to-one with the arc plate 5. A connecting hole 11 is provided on each sealing pressure ring 3. The connecting hole 11, the adjusting groove 9 and the screw 4 are all on the same straight line. The free end of the screw 4 passes through the adjusting groove 9 and is fixed in the connecting hole 11 by a nut 12.

[0029] The size of the adjusting groove 9 is larger than that of the screw rod 4 , and the screw rod 4 can move up and down in the adjusting groove 9 during adjustment.

[0030] A tensioning assembly is provided in the guide plate groove 8, which includes a wire rope 13, a tension spring 14 and an adjusting screw 15. After the wire rope 13 is wound around the graphite packing 1 twice in the guide plate groove 8, its two ends hang down on the left and right sides of the graphite packing 1. Tension springs 14 are provided on the steel wire ropes 13 hanging down at both ends, and an adjusting screw 15 is provided at the other end of each tension spring 14. Each adjusting screw 15 is fixed on the fixed frame.

[0031] During operation, when the device is running, the tension spring 14 is contracted and tightened by adjusting the screw 15, and then the tension spring 14 is used to tighten the wire rope 13, and the arc plate 5 evenly distributed around the circumference is contracted and tightened, so that the graphite packing 1 can be tightly combined with the cylinder, and the contact surface between the cylinder and the sealing device is more uniform, thereby preventing seal failure and reducing air leakage or ash leakage. In addition, the screw 4 with the nut 12 can be used to adjust the gap between the running sealing pressure ring 3, the graphite packing 1 and the fixed sealing flange 2, and the sealing device can be adjusted in the axial direction to increase its sealing performance, improve production efficiency and reduce maintenance costs.

[0032] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. An adjustable graphite sealing device for a cooling machine, comprising a graphite packing, wherein the graphite packing is circumferentially attached to a friction ring on a cylinder, and wherein: The right side of the graphite packing is tightly attached to the left side of the fixed sealing flange. Screws are evenly distributed on the upper circumference of the left side of the fixed sealing flange. Adjustable sealing pressure plates are evenly distributed on the outer ring surface of the graphite packing. A sealing pressure ring is provided on the left side of the graphite packing. The graphite packing is fixed between the fixed sealing flange and the sealing pressure ring by using the screw. A tensioning assembly is provided around the adjustable sealing pressure plate.

2. The adjustable cooler graphite sealing device according to claim 1, characterized in that: The adjustable sealing pressure plate includes an arc-shaped plate, which is evenly distributed on the outer ring surface of the graphite packing. The arc-shaped plates are arranged in a one-to-one correspondence with the screw rods. Two guide plates symmetrically arranged on the left and right are provided on the outer ring surface of each of the arc-shaped plates. A guide plate groove is formed between the two guide plates. An ear plate with an adjustment groove is provided on the outer side of the right guide plate on the arc plate. The free end of the screw rod passes through the adjustment groove and is connected to the sealing pressure ring. The tensioning assembly is wound in the guide plate groove.

3. The adjustable cooler graphite sealing device according to claim 2, characterized in that: The arc-shaped plate is fixed on the graphite packing by fixing bolts. The curvature of the arc-shaped plate is consistent with the curvature of the graphite packing. The curvature of the guide plate is consistent with the curvature of the arc-shaped plate.

4. The adjustable cooler graphite sealing device according to claim 2 or 3, characterized in that: The sealing pressure ring adopts a half-type structure and is arranged one-to-one with the arc-shaped plate. Each sealing pressure ring is provided with a connecting hole. The connecting hole, the adjustment groove and the screw are all on the same straight line. The free end of the screw passes through the adjustment groove and is fixed in the connecting hole by a nut.

5. The adjustable cooler graphite sealing device according to claim 4, characterized in that: The size of the adjusting groove is larger than that of the screw rod, and during adjustment, the screw rod can move up and down in the adjusting groove.

6. The adjustable cooler graphite sealing device according to claim 2 or 5, characterized in that: The tensioning assembly includes a steel wire rope, a tension spring and an adjustment screw. After the steel wire rope is annularly wound around the graphite packing in the guide plate groove, its two ends hang down on the left and right sides of the graphite packing. The tension springs are provided on the steel wire ropes hanging down at both ends, and the other end of each tension spring is provided with the adjustment screw.

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