Sealing device and conditioner

Abstract

The present invention provides a sealing device, comprising: a sealing seat, one end of which is open and sleeved on the main shaft; a fixed seat, which is fixedly sleeved on the main shaft and arranged in the sealing seat; a clamping block, a plurality of which surround the main shaft and are arranged on the fixed seat, and the clamping block can realize radial movement with the rotation of the main shaft; a sealing member, which is sleeved on the main shaft and arranged on both sides of the clamping block; an adjusting block, which is arranged on the outside of the sealing seat and can move to realize axial compression of the sealing member, and the clamping block can generate centrifugal movement with the rotation of the main shaft and compress the sealing members arranged on both sides thereof on the sealing seat and the inner wall of the adjusting block. The present invention can effectively isolate steam leakage and compensate for wear clearance.

Description

Technical Field

[0001] The invention relates to a feed mechanical device, in particular to a sealing device for a conditioner. Background Art

[0002] The conditioner is a device used for material maturation. During use, steam needs to be added inside the conditioner so that the material can form a gelatinized state. Therefore, its internal environment is a high temperature and high humidity state. At the same time, in order to enable the material to mature faster and to meet the requirements of the maturation degree, the conditioner often adds excessive steam during use, especially the conditioner for aquatic feed. The internal temperature is often higher than 95°C, and the internal positive pressure can reach 0.01Mpa. At this time, there is a higher requirement for leakage sealing.

[0003] At present, most of the conditioners on the market use packing seals. However, since the joint between the packing and the main shaft is prone to wear, the sealing effect will be greatly reduced after wear. If it is not maintained in time, excess steam will carry the material along the gap between the packing and the main shaft, resulting in seal failure. The steam and material that escaped may even enter the bearing and cause damage to the bearing. Summary of the invention

[0004] In view of the above problems, the present invention provides a sealing device that can automatically fill the gap, which can effectively prevent the problem of excessive steam carrying materials out. The specific solution is as follows:

[0005] A sealing device for sealing both ends of a conditioner main shaft, characterized in that it comprises: a sealing seat, one end of which is open and sleeved on the main shaft; a fixed seat, which is sleeved on the main shaft and arranged in the sealing seat; a clamping block, a plurality of which surround the main shaft and are arranged on the fixed seat, and the clamping block can move radially with the rotation of the main shaft; a sealing member, which is sleeved on the main shaft and arranged on both sides of the clamping block; an adjusting block, which is arranged on the outer side of the sealing seat and can move to axially compress the sealing member, and the clamping block can generate centrifugal motion with the rotation of the main shaft and press the sealing members arranged on both sides thereof against the sealing seat and the inner wall of the adjusting block.

[0006] The seal can be effectively compressed by the cooperation between the clamping block and the seal. When the main shaft starts to rotate, the clamping block can realize radial movement and compress the seal. When the main shaft stops rotating, the clamping block loses the driving force and can return to its original position by the reaction force of the seal. That is, the sealing device at this time seals only when the conditioner is working, and loses the compression force when it is not working, thereby reducing the wear of the seal. At the same time, when the seal is worn, the movement of the clamping block can make the seal adapt to the above-mentioned wear gap, thereby reducing the occurrence of leakage.

[0007] Furthermore, the clamping block is configured as a trapezoidal structure with one end in contact with the main shaft gradually shrinking upward, and the inner sides of the seals on both sides are surrounded to form a trapezoidal clamping cavity. The clamping block is arranged in the clamping cavity and can move outward with the rotation of the main shaft and clamp the seals to both sides.

[0008] The use of the trapezoidal structure can make the pressing cavity gradually shrink upward during pressing, and the pressing block forms an inclined contact with the contact surface of the seal when it moves outward, so that the sealing surface of the seal obtains a nearly uniform sealing force. Generally, in the prior art, the sealing filler and the pressing piece adopt a plane match. The above-mentioned plane contact match easily makes the sealing force at both ends of the sealing surface uneven, thereby causing the sealing filler to wear. The inclined surface design of this case can make the centrifugal force obtained by the pressing piece evenly distributed on the seal, thereby preventing excessive wear. At the same time, the design of the trapezoidal cavity can obtain a larger retraction force when the pressing block is not working, thereby allowing the pressing block to recover.

[0009] Furthermore, the fixed seat includes: a fixed cylinder sleeved on the main shaft; a connecting body, the connecting body is vertically arranged on the fixed cylinder, a plug-in hole is opened in the connecting body, and an annular sliding groove is axially opened on the outer side of the connecting body; a plug-in body is provided at the lower end of the clamping block and a connecting cavity for accommodating the connecting body is opened, the plug-in body is inserted into the plug-in hole and the connecting body is arranged in the connecting cavity, a limit pin is provided in the connecting body and the connecting cavity, the limit pin is arranged in the sliding groove and connects the plug-in body to the connecting body, and the plug-in body can move along the sliding groove with the rotation of the main shaft.

[0010] Furthermore, a plurality of mounting grooves are provided on one side of the pressing block in contact with the sealing member, and a mounting strip is provided on one side of the sealing member, and the mounting strip is slidably disposed in the mounting groove.

[0011] Furthermore, a first oil channel is provided on the outer side of the fixing seat to guide the oil to the contact surfaces of the sealing members on both sides and the inner contact surfaces of the sealing seat and the inner contact surfaces of the adjusting block.

[0012] Furthermore, a second oil passage is provided on the regulating block and is in communication with the first oil passage, so as to guide the oil from the first oil passage through the second oil passage to the contact surface between the sealing element and the inner side of the regulating block.

[0013] Furthermore, the adjusting block and the fixing seat are connected by threads.

[0014] Furthermore, a fixing hole is opened on the outer side of the sealing seat, and a fixing pin is provided in the fixing hole. The lower end of the fixing pin abuts against an adjustment block arranged in the sealing seat, and a stop screw is provided at the upper end of the fixing pin for limiting the movement of the fixing pin.

[0015] Furthermore, the pressing block is configured to be made of metal material.

[0016] In view of the above sealing device, the present invention also provides a conditioner suitable for the above sealing device, which is as follows:

[0017] A conditioner comprises the sealing device described above. Both ends of the conditioner are provided with wall panels. The sealing seat is arranged on the outside of the wall panels and connected to the wall panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the sealing device;

[0019] Figure 2 for Figure 1 Sectional view at A in the middle;

[0020] Figure 3 for Figure 1 Sectional view at B in the middle;

[0021] Figure 4 for Figure 1 Sectional view at D in the middle;

[0022] in:

[0023] 1. Wall panel; 2. Main shaft; 3. Connecting flange; 4. Sealing seat; 5. Adjusting block; 6. Sealing element; 7. Fixed seat; 8. Pressing block; 9. Limit pin; 10. First oil passage; 11. Fixed pin; 12. Stop screw; 13. Fixed hole;

[0024] 101, second oil channel;

[0025] 401, compression chamber;

[0026] 601, installation strip;

[0027] 701, connector; 702, fixed cylinder;

[0028] 7021, slide groove; 7022, plug hole;

[0029] 801, plug-in body; 802, connecting cavity; 803, mounting groove. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] It should also be noted that the axial direction in the text is determined according to the axial direction of the main shaft.

[0037] At present, the conditioners on the market generally add excessive steam during use. The addition of excessive steam can make the material mature better and easier to achieve faster maturation, but it also brings leakage problems. Since the environment in the conditioner is always in a high temperature and high pressure situation, the requirements for sealing in this environment are further increased. The conditioners in the prior art are often sealed by packing, that is, a sealing seat is set on the main shaft outside the wallboard of the conditioner, and the sealing seat is filled with sealing packing. This sealing method is prone to wear and leakage. When the packing and the main shaft are worn during rotation, the high-pressure steam is easy to carry the material out of the sealing seat, thereby threatening other equipment parts, such as bearings. The escaping steam is easy to enter the bearings and damage them. For this reason, this case provides a sealing device that can reliably seal and reduce wear, as follows:

[0038] like Figure 1 , 2 As shown, the main shaft 2 is a rotating shaft arranged in the conditioner, the sealing seat 4 is sleeved on the main shaft 2, and a fixed seat 7 is also provided on the main shaft 2. The fixed seat 7 is sleeved on the main shaft 2 and can rotate with the rotation of the main shaft 2. A plurality of clamping blocks 8 are installed on the fixed seat 7. The clamping blocks 8 are arranged on the fixed seat 7 around the main shaft 2, and the clamping blocks 8 can generate centrifugal force with the rotation of the main shaft 2 so as to realize radial movement, that is, the clamping blocks 8 here are movably connected to the fixed seat 7.

[0039] Seals 6 are mounted on both axial sides of the clamping block 8, and an adjustment block 5 is provided at one end of the sealing seat 4. Specifically, the adjustment block 5 is arranged at an opening at one end of the sealing seat 4 and can move relative to the sealing seat 4, thereby pushing the seal 6 to press against the inner wall of the sealing seat 4.

[0040] When the main shaft 2 rotates, the clamping block 8 will generate an outward centrifugal force as the main shaft 2 rotates. At this time, since the clamping block 8 and the fixed seat 7 are movably connected, the clamping block 8 can move outward, thereby forcing the seals on both sides to be pressed toward both sides. When the main shaft 2 does not rotate, the clamping block 8 no longer generates an outward centrifugal force. At this time, the elastic force of the seal 6 itself will force the clamping block 8 to return to its original position and no longer press the seal 6, thereby reducing the wear of the seal 6. At the same time, when the seal 6 is worn, the clamping block 8 can force the seal 6 to be pressed toward both sides again by the depth of movement, thereby compensating for the worn gap.

[0041] The above has described the main working principle of this case, but it does not restrict the achievable structure too much. It should be understood that to realize the above working principle, it can be realized by relying on the knowledge of mechanical principles. Therefore, as long as the above working principle can be realized and used to solve the problems of easy wear of seals and compensation after wear, it should fall within the scope of protection required by this case.

[0042] In order to explain the present invention more specifically, this case provides a more specific structural implementation scheme, which is as follows:

[0043] The fixed seat 7 includes a fixed cylinder 702 which is sleeved on the main shaft 2. It should be understood that there are many ways to connect the fixed cylinder 702 here, such as directly interferingly connecting the fixed cylinder 702 with the main shaft 2, or fixing the fixed cylinder 702 in the main shaft 2 with pins, nails and other components. Since the fixing method here can be completed using existing technology, it will not be elaborated here.

[0044] In one embodiment, if Figure 1 , 4 As shown, a plurality of connectors 701 are vertically arranged on the fixed cylinder 702, and the relative positions of the connectors 701 and the fixed cylinder 702 are arranged in the vertical direction. A plug-in hole 7022 is provided in the connector 701, and a through slide groove 7021 is axially provided on the outer side of the connector 701. A plug-in body 801 is provided at the lower end of the clamping block 8, and the plug-in body 801 is inserted in the plug-in hole 7022, and the plug-in body 801 is connected to the connector 701 by a limit pin 9.

[0045] Specifically, the limit pin 9 is inserted into the slide groove 7021 and passes through the plug-in body 801. At the same time, a connecting cavity 802 for accommodating the connecting body 701 is also provided at the lower end of the clamping block 8. In this way, when the plug-in body 801 is inserted into the plug-in hole 7022, the connecting body 701 is simultaneously located in the connecting cavity 802, so that the clamping block 8 can be connected to the fixed cylinder 702 without hindrance. The structure in which the lower end of the clamping block 8 is arranged in the slide groove 7021 through the limit pin 9 allows the lower end of the clamping block 8 to slide in the slide groove 7021. The function of the limit pin 9 is to effectively prevent the plug-in body 801 at the lower end of the clamping block 8 from being always in the plug-in hole 7022 without being detached.

[0046] In this way, when the main shaft 2 rotates, the clamping block 8 obtains outward centrifugal force and can slide along the slide groove 7021. At the same time, the limit pin 9 can prevent the lower end of the clamping block 8 from separating from the fixed cylinder 702. The distance of the slide groove 7021 can be set according to the limit gap of the wear of the seal 6. Specifically, the length of the slide groove 7021 can be adapted to the wear gap of the seal 6. It can be set that the larger the wear gap, the longer the distance the clamping block 8 needs to move, that is, the longer the length of the slide groove 7021.

[0047] like Figure 1 As shown, the steam leakage direction can be directly changed by the cooperation of the fixing seat 7, the clamping block 8 and the sealing member 6. As shown by the arrow in the figure, the steam in the conditioner rushes toward the sealing member 4 through the gap between the main shaft 2 and the wall panel, and rushes out through the contact surface between the sealing member 6 and the inner wall of the sealing member 4. Therefore, as long as the clamping effect between the sealing member 5 and the inner wall of the sealing member 4 is maintained during operation, the escape of steam can be effectively avoided. The length of the slide groove 7021 in this case can be set according to the limit wear value of the gap between the sealing member 5 and the inner wall of the sealing member 6.

[0048] Of course, the above-mentioned movement method is not limited to this. For example, the movement can be completed by using sliders and slide rails that cooperate with each other on the clamping block 8 and the fixed cylinder 702. For example, the movement can also be completed by connecting ropes, cables, belts and other devices between the lower end of the clamping block 8 and the fixed cylinder 702.

[0049] In order to better realize the compression of the seal 5 and the retraction of the compression block 8, the present invention also provides a trapezoidal structure solution, which is as follows:

[0050] like Figure 1As shown, the clamping block 8 is configured as a trapezoidal structure that gradually narrows upward from the end in contact with the main shaft 2, and the inner sides of the seals 6 arranged on both sides of the clamping block 8 are configured to form a clamping cavity 401 of the trapezoidal structure adapted to the clamping block. The clamping block 8 is arranged in the clamping cavity 401. At this time, when the clamping block 8 is displaced with the rotation of the main shaft 2, the seals 6 on both sides can press the inner walls of the sealing seats 4 on both sides and the inner walls of the adjusting block 5. When the main shaft 2 is not rotating, the clamping cavity 401 itself can be tilted, and the clamping block 8 can be gradually squeezed to reset. Through the above structure, the clamping block 8 can be compressed and sealed only when the main shaft 2 rotates, and can be effectively reset when the main shaft 2 does not rotate.

[0051] At the same time, setting the clamping block 8 to a trapezoidal structure can make the contact surfaces between the clamping block 8 and the seal 6 on both sides an inclined surface. The advantage of the inclined surface is that the centrifugal force obtained by the clamping block 8 can be evenly distributed on the seal 6, so that the clamping force obtained by the upper end and the lower end of the seal 6 is almost equal. Most seals in the prior art use linear contact between the filler and the clamping member. The disadvantage of linear contact is that the clamping force at the contact point and the other end away from the contact point is different, which makes the wear of the seal inconsistent. Therefore, when the seal is worn, it can only be replaced but cannot be compensated.

[0052] In order to reduce the wear of the seal 6, a first oil channel 10 is opened on the sealing seat 4. The first oil channel 10 is used to guide the oil to the contact surface between the seal 6 and the inner wall of the sealing seat 4 and the inner wall of the adjusting block 5, which can ensure that the above-mentioned contact surfaces are always in a lubricated state, thereby reducing the wear of the seal 6.

[0053] Specifically, one end of the first oil passage 10 is disposed on the sealing seat 4, and the outlet of the other end can be divided into two and point to the above-mentioned contact surface respectively.

[0054] In another embodiment, a second oil passage 101 is provided on the regulating block 5 and is communicated with the first oil passage 10 , so that the oil can be guided to the contact surface between the sealing member 6 and the inner wall of the regulating block 5 .

[0055] In order to further achieve gap compensation for the seal 6 and extend the service life of the seal 6, as Figure 1 As shown, the adjusting block 5 and the sealing seat 4 are screwed together. When the sealing member 6 is excessively worn, the adjusting block 5 can be rotated axially to further press the sealing member 6.

[0056] At the same time, in order to prevent the adjusting block 5 from loosening, a fixing hole 13 is opened on the outer side of the sealing seat 4, and a fixing pin 11 is arranged in the fixing hole 13. The lower end of the fixing pin 11 abuts against the outer wall of the adjusting block 5, and a stop screw 12 is also arranged on the upper end of the fixing pin 11. Through the cooperation of the stop screw 12 and the fixing pin 11, the adjusting block 5 can be further fixed, thereby preventing the adjusting block 5 from loosening.

[0057] In one embodiment, in order to achieve better cooperation and movement between the sealing member 6 and the pressing block 8, the present invention also provides a connection scheme, which is as follows:

[0058] like Figure 1 , 3 As shown, the clamping block 8 is provided with a plurality of mounting grooves 803, and a plurality of mounting strips 601 are provided on the side where the seal 6 contacts the clamping block 8. The mounting strips 601 are clamped in the mounting grooves 803. The setting of the mounting grooves 803 can make the installation more convenient and can limit the displacement of the clamping block 8 to always be in the length extension direction of the mounting grooves 803 without deviation.

[0059] In view of the above sealing device, the present case also provides a conditioner using the above sealing device, which is as follows:

[0060] like Figure 1 The above-mentioned sealing device is installed in the conditioner. Wall panels 1 are provided at both ends of the conditioner. The sealing seat 3 is arranged on the outside of the wall panel 1 and is fixedly connected to the wall panel 1.

[0061] As described above, when steam leaks, since the sealing seat 3 is fixedly connected to the wall panel 1, the steam can only escape through the contact surface between the seal 6 and the inner wall of the sealing seat 4. At this time, the centrifugal movement of the clamping block 8 can ensure the tightness between the seal 6 and the inner wall of the sealing seat 4 in real time, thereby preventing steam leakage. At the same time, when the seal 6 is worn, the clamping block 8 continues to move so that the seal 6 automatically compensates for the wear gap, thereby extending the service life of the seal 6.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention, and the contents not described in detail in this specification shall belong to the prior art known to professional and technical personnel in the field.

Claims

1. A sealing device for sealing both ends of a conditioner main shaft, characterized in that: include: A sealing seat, one end of which is open and sleeved on the main shaft; A fixed seat, the fixed seat is fixedly sleeved on the main shaft and arranged in the sealing seat, the fixed seat comprises: a fixed cylinder sleeved on the main shaft; a connecting body, the connecting body is vertically arranged on the fixed cylinder, a plug hole is opened in the connecting body, and a through slide groove is axially opened on the outer side of the connecting body; A clamping block, a plurality of the clamping blocks surround the main shaft and are arranged on the fixing seat, the clamping block can realize radial movement with the rotation of the main shaft, a plug-in body is arranged at the lower end of the clamping block and a connecting cavity for accommodating the connecting body is opened, the plug-in body is inserted into the plug-in hole and the connecting body is arranged in the connecting cavity, a limiting pin is arranged in the connecting body and the connecting cavity, the limiting pin is arranged in the slide groove and connects the plug-in body with the connecting body, and the plug-in body can move along the slide groove with the rotation of the main shaft; A sealing member, wherein the sealing member is sleeved on the main shaft and arranged on both sides of the pressing block; An adjusting block is arranged outside the sealing seat and can move to axially compress the sealing member. The compressing block can generate centrifugal motion as the main shaft rotates and compress the sealing members arranged on both sides thereof onto the sealing seat and the inner wall of the adjusting block.

2. The sealing device according to claim 1, characterized in that: The clamping block is configured as a trapezoidal structure with one end contacting the main shaft gradually shrinking upward, and the inner sides of the seals on both sides are surrounded to form a trapezoidal clamping cavity. The clamping block is arranged in the clamping cavity and can move outward with the rotation of the main shaft and clamp the seals to both sides.

3. The sealing device according to claim 2, characterized in that: A plurality of mounting grooves are arranged on one side of the pressing block in contact with the sealing member, and a mounting strip is arranged on one side of the sealing member. The mounting strip is slidably arranged in the mounting groove.

4. The sealing device according to claim 1, characterized in that: The outer side of the fixing seat is provided with a first oil passage for guiding the oil to the contact surfaces of the sealing members on both sides with the inner side of the sealing seat and the inner side of the adjusting block.

5. The sealing device according to claim 4, characterized in that: The regulating block is provided with a second oil passage which is in communication with the first oil passage, so as to guide the oil from the first oil passage through the second oil passage to the contact surface between the sealing element and the inner side of the regulating block.

6. The sealing device according to claim 1, characterized in that: The adjusting block and the sealing seat are connected by threads.

7. The sealing device according to claim 1, characterized in that: A fixing hole is provided on the outer side of the sealing seat, and a fixing pin is provided in the fixing hole. The lower end of the fixing pin abuts against an adjusting block provided in the sealing seat, and a stop screw is provided on the upper end of the fixing pin for limiting the movement of the fixing pin.

8. The sealing device according to claim 1, characterized in that: The pressing block is configured to be made of metal material.

9. A conditioner, characterized in that: The sealing device comprises any one of the above claims, wherein wall panels are provided at both ends of the conditioner, and the sealing seat is provided on the outside of the wall panels and connected to the wall panels.

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