Solenoid speed reducer

Abstract

The utility model relates to garbage treatment technical field provides a spiral pipe speed reducer, including output end, including output end flange and the output shaft of the center of wearing in output end flange, wherein, output end flange and output shaft are separated from each other in the radial, sealing cover, form as the cylinder shape that penetrates along the axial, its fixed connection to output end flange, and its inboard wall is provided with at least one sealing element, and sealing element and sealing cover and output shaft sealedly connect, sealing gland, form as ring, its fixed connection to the distal end of sealing cover. Through above, both can prevent the further spread of the leaked lubricating oil / fat to the spiral push blade in the spiral pipe upwards, also can prevent the paddle of garbage to flow downwards and enter the inside of speed reducer, thereby causing the deterioration of lubricating oil / fat, finally cause the drive train in speed reducer to be damaged even completely destroyed failure.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment technology, and in particular to a spiral tube reducer. Background Technology

[0002] In the waste disposal process for various household wastes, such as kitchen waste and medical waste, waste conveying mainly relies on screw conveyor devices. Some screw conveyor devices, based on the spatial layout of the drive motor and the discharge port, employ an inclined screw tube layout, meaning the discharge port (far end) of the screw tube is higher than the inlet (near end). Simultaneously, the reducer, which works with the drive motor, is also positioned relatively low. Under these circumstances, it is highly likely that slurry containing particulate matter will flow down the drive shaft from high to low towards the reducer's pre-seal. The reducer's pre-seal is primarily composed of a skeleton oil seal. After prolonged use and wear, this skeleton oil seal will be permeated by the slurry, which will then enter the reducer and degrade the lubricating oil / grease inside. The gears and bearings inside the reducer will not receive proper lubrication and will be corroded by the slurry from the waste, easily leading to damage or even failure of the transmission system. Furthermore, the deteriorated grease inside the reducer tends to become diluted and seep into the drive motor, causing damage to it as well. Utility Model Content

[0003] This utility model provides a spiral tube reducer to solve the defect in the prior art that the front seal of the reducer cannot prevent the long-term isolation of slurry penetration from garbage. It realizes a spiral tube reducer that can prevent garbage slurry from penetrating into the reducer and further strengthen the front seal of the reducer to prevent the leakage of lubricating oil / grease.

[0004] This utility model provides a spiral tube reducer, comprising: The output end includes an output end flange and an output shaft passing through the center of the output end flange, wherein the output end flange and the output shaft are radially separated from each other. The sealing sleeve is formed into a cylindrical shape that runs through the axis. It is fixedly connected to the output end flange, and its inner sidewall is provided with at least one sealing element. The sealing element is in a sealing connection with the sealing sleeve and the output shaft. The sealing gland is formed in a ring shape and is fixedly connected to the distal end of the sealing sleeve.

[0005] According to the spiral tube reducer provided by this utility model, the sealing element includes an inner oil seal and an outer oil seal arranged in pairs.

[0006] According to the spiral tube reducer provided by this utility model, the inner side wall of the sealing sleeve is provided with a combination of one or more pairs of inner oil seals and outer oil seals.

[0007] According to the spiral tube reducer provided by this utility model, the inner diameter of the sealing gland is larger than the diameter of the output shaft and smaller than the diameter of the inner wall of the sealing sleeve.

[0008] According to the spiral tube reducer provided by this utility model, the outer wall of the sealing sleeve is provided with several lugs, which are fixedly connected to the output end flange.

[0009] According to the spiral tube reducer provided by this utility model, an annular groove is provided on the near end face of the sealing sleeve, and an annular positioning protrusion is provided on the output end flange corresponding to the annular groove.

[0010] According to the spiral tube reducer provided by this utility model, the inner sidewall of the sealing sleeve is provided with an annular boss that extends radially inward, and the annular boss is in clearance fit with the output shaft.

[0011] According to the spiral tube reducer provided by this utility model, the sealing cover has an upper half cover with a relatively large first outer diameter and a lower half cover with a relatively small second outer diameter, thereby forming a stepped structure, wherein the second outer diameter is equivalent to the diameter of the inner sidewall of the sealing sleeve.

[0012] According to the spiral tube reducer provided by this utility model, the sealing cover has several through holes, and the sealing sleeve has corresponding threaded holes at each through hole. The sealing cover and the sealing sleeve are connected by external bolts.

[0013] According to the spiral tube reducer provided by this utility model, several through holes of the sealing gland are formed as countersunk holes.

[0014] The spiral tube reducer provided by this utility model achieves a sealed connection between the sealing sleeve and the output shaft by additionally configuring a sealing sleeve and a sealing gland at the end of the original pre-seal of the reducer, and by setting at least one sealing element inside the sealing sleeve. This at least one sealing element not only prevents the original pre-seal from depleting and leaking oil due to prolonged use, but also prevents leaked lubricating oil / grease from spreading further upwards to the spiral pusher blades inside the spiral tube. Furthermore, it prevents debris from flowing downwards onto the blades and entering the reducer's interior, thus preventing lubricating oil / grease deterioration and ultimately damage or complete failure of the transmission system within the reducer. Therefore, the spiral tube reducer of this utility model adds an extra and powerful sealing measure to the original pre-seal of the reducer, significantly extending the service life of the reducer. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a front view of the spiral tube reducer provided by this utility model.

[0017] Figure 2 This is an axial sectional view of the sealing sleeve provided by this utility model.

[0018] Figure 3 These are the axial sectional view and front view of the sealing gland provided by this utility model.

[0019] Figure label: 1. Output flange; 2. Output shaft; 3. Sealing sleeve; 4. Sealing gland; 5. Inner wall; 6. Outer wall; 7. Annular groove; 8. Annular boss; 9. Upper cover; 10. Lower cover; 11. Through hole; 12. Threaded hole. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection, wherein a fixed connection can include 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0023] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] The following is combined with Figures 1 to 3 This invention describes a spiral tube reducer.

[0026] Figure 1 This is a front view of the spiral tube reducer provided by this utility model. Figure 2 This is an axial sectional view of the sealing sleeve provided by this utility model. Figure 3 These are the axial sectional view and front view of the sealing gland provided by this utility model, as shown below. Figures 1 to 3As shown, the helical tube reducer includes an output end, which comprises an output end flange 1 and an output shaft 2. The axial direction of the output shaft 2 is orthogonal to the plane containing the output end flange 1, and the output shaft 2 passes through the center of the output end flange 1 and extends outwards. In the radial direction, the output end flange 1 and the output shaft 2 are radially separated from each other. It should be noted that the original pre-seal of this helical tube reducer is already located at the output end, specifically at the relatively proximal end of the output end flange 1.

[0027] The helical reducer also includes a sealing sleeve 3. The sealing sleeve 3 is formed as a cylinder extending axially along the output shaft 2 so that the output shaft 2 passes through it. The sealing sleeve 3 is fixedly connected to the output end flange 1, and is located outside the original front seal. The inner wall 5 of the sealing sleeve 3 is provided with at least one sealing element (not shown in the figure), and each sealing element is respectively connected to the sealing sleeve 3 and the output shaft 2 in a sealing manner.

[0028] The helical reducer also includes a sealing gland 4. The sealing gland 4 is formed as an annular cover, thus having an outer diameter and an inner diameter for the output shaft 2 to pass through. The sealing gland 4 is fixedly connected to the distal end of the sealing sleeve 3 to prevent the components of the sealing sleeve 3 from falling out of the distal opening.

[0029] With the above configuration, at least one sealing element is used to achieve a sealed connection between the sealing sleeve 3 and the output shaft 2. This sealing element prevents the original pre-sealed oil seal of the reducer from depleting due to prolonged use, thus preventing oil leakage and further upward spread of leaked lubricating oil / grease into the spiral pusher blades inside the spiral tube. It also prevents debris from flowing downwards onto the blades and entering the reducer, which could lead to lubricating oil / grease deterioration and ultimately damage or complete failure of the transmission system within the reducer. Therefore, the spiral tube reducer of this invention adds an additional and powerful sealing measure to the original pre-sealed seal of the reducer, thereby significantly extending the service life of the reducer.

[0030] Furthermore, the sealing elements include an inner oil seal and an outer oil seal arranged in pairs. The inner oil seal refers to the oil seal installed on the relatively inner side of the sealing sleeve 3, which is used to prevent the lubricating oil / grease in the spiral tube reducer from leaking outward; while the outer oil seal refers to the oil seal installed on the relatively outer side of the sealing sleeve 3, which is used to prevent external dust, moisture, and the aforementioned debris such as slurry from entering the interior of the sealing sleeve 3.

[0031] Furthermore, the inner wall 5 of the sealing sleeve 3 is provided with one or more pairs of inner and outer oil seals. In this embodiment, two pairs of inner and outer oil seals are used; of course, in other embodiments, other combinations of oil seals and outer oil seals can also be used.

[0032] In this embodiment, the outer oil seal located at the far end of the sealing sleeve 3 is the first outer oil seal facing the outside. For most of the time, this outer oil seal prevents external debris from entering the interior of the sealing sleeve 3. Similarly, the inner oil seal located at the near end of the sealing sleeve 3 is the first inner oil seal facing the output shaft 2 of the helical reducer. Likewise, for most of the time, this inner oil seal prevents lubricating oil / grease leakage. During this period, the remaining outer / inner oil seals, as a redundant design, are installed inside the sealing sleeve 3 but do not actually need to perform their respective functions until the two outer / inner oil seals located at the farthest / nearest ends fail.

[0033] Furthermore, as described above, the sealing gland 4 has an outer diameter and an inner diameter. The inner diameter of the sealing gland 4 is larger than the diameter of the output shaft 2 and smaller than the diameter of the inner wall 5 of the sealing sleeve 3. This configuration has the advantage that, on the one hand, the sealing gland 4 will not contact the output shaft 2, thereby preventing continuous friction between the output shaft 2 and the sealing gland 4 during operation; on the other hand, the sealing gland 4 acts as a stop, preventing the sealing element from falling from the sealing sleeve 3 through the distal opening to the outside.

[0034] Furthermore, the outer wall 6 of the sealing sleeve 3 is provided with several lugs (not shown in the figure), which are fixedly connected to the output flange 1. It can be imagined that the output flange 1 has several threaded connection assemblies arranged circumferentially thereon. In order to fix the sealing sleeve 3 to the output flange 1, the outer wall 6 of the sealing sleeve 3 is provided with lugs at several threaded connection assemblies corresponding to the output flange 1, and each lug is provided with a hole so that the bolts in the threaded connection assembly can pass through it.

[0035] Preferably, the number of lugs required is determined according to the number of threaded connection assemblies on the output flange 1. In particular, the number of lugs is an approximation / factor of the number of threaded connection assemblies. For example, when the output flange 1 has six sets of threaded connection assemblies, the number of lugs can be designed to be two or three; when the output flange 1 has eight sets of threaded connection assemblies, the number of lugs can be designed to be two or four, and so on. More preferably, the lugs are arranged equidistantly from each other along the circumference of the outer wall 6 of the sealing sleeve 3. With the above configuration, the tightening force of the threaded connection assemblies is evenly distributed along the circumference of the outer wall 6 of the sealing sleeve 3, thereby smoothly connecting the sealing sleeve 3 to the output flange 1.

[0036] Furthermore, an annular groove 7 is provided on the near-end face of the sealing sleeve 3, and an annular positioning protrusion (not shown in the figure) is provided on the output flange 1 corresponding to the annular groove 7. The annular groove 7 and the annular positioning protrusion cooperate with each other to assist the sealing sleeve 3 in positioning and installing the output flange 1. Figure 2From a cross-sectional perspective, the annular groove 7 has a semi-circular cross-sectional shape. Correspondingly, the annular positioning protrusion can be designed as a metal protrusion integrally formed with the output flange 1, or as a positioning washer made of other materials and set on the surface of the output flange 1.

[0037] Furthermore, the inner wall 5 of the sealing sleeve 3 is provided with an annular boss 8 extending radially inward, and the annular boss 8 is clearance-fitted with the output shaft 2. Preferably, the annular boss 8 is located near the proximal end of the sealing sleeve 3, thus, similar to the sealing gland 4, the annular boss 8 acts as a proximal stop of the sealing sleeve 3, preventing the sealing element from falling out of the sealing sleeve 3 through the proximal opening to the outside. Similarly, the annular boss 8 does not contact the output shaft 2, thereby avoiding continuous friction between the output shaft 2 and the annular boss 8 during operation.

[0038] Furthermore, the sealing cap 4 has an upper half-cap 9 with a relatively large first outer diameter and a lower half-cap 10 with a relatively small second outer diameter, thereby forming a stepped structure, wherein the second outer diameter is equivalent to the diameter of the inner wall 5 of the sealing sleeve 3. In addition, preferably, the first outer diameter is equivalent to the diameter of the outer wall 6 of the sealing sleeve 3.

[0039] With the above configuration, the lower cover 10 can be embedded in the cavity defined by the inner wall 5 of the sealing sleeve 3, which helps the sealing cap 4 to be stably placed on the distal opening of the sealing sleeve 3. On the other hand, the first outer diameter is equivalent to the diameter of the outer wall 6 of the sealing sleeve 3, which means that the outer surface of the sealing cap 4 is basically flush with the outer wall 6 of the sealing sleeve 3. In terms of the outer contour, a smooth transition from the sealing cap 4 to the sealing sleeve 3 is achieved, avoiding any unevenness in the outer contours of the two that could cause unnecessary bumps or scratches.

[0040] Furthermore, the sealing cap 4 has several through holes 11, and the sealing sleeve 3 has corresponding threaded holes 12 at each through hole 11. The sealing cap 4 and the sealing sleeve 3 are connected by external bolts. Preferably, the several through holes 11 are arranged at equal intervals along the circumferential outer edge of the sealing cap 4, and the corresponding threaded holes 12 are also arranged at equal intervals along the circumferential direction of the sealing sleeve 3 on the far end face of the sealing sleeve 3, so that the tightening force of the external bolts is evenly distributed on the far end face of the sealing sleeve 3 and the circumferential outer edge of the sealing cap 4.

[0041] Furthermore, several through holes 11 of the sealing gland 4 are formed as countersunk holes. When connecting the sealing gland 4 to the sealing sleeve 3 using external bolts, the heads of the external bolts are accommodated in the countersunk holes. Through the above configuration, any possible protrusions / parts on the outer contour of the sealing gland 4 are further avoided, preventing accidental bumps or scratches.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A spiral tube reducer, characterized in that, include: The output end includes an output end flange and an output shaft passing through the center of the output end flange, wherein the output end flange and the output shaft are radially separated from each other; The sealing sleeve is formed into a cylindrical shape that extends through the axis. It is fixedly connected to the output end flange, and at least one sealing element is provided on its inner sidewall. The sealing element is in a sealing connection with the sealing sleeve and the output shaft. A sealing gland, formed in the shape of a ring, is fixedly connected to the distal end of the sealing sleeve.

2. The spiral tube reducer according to claim 1, characterized in that, The sealing element includes an inner oil seal and an outer oil seal arranged in pairs.

3. The spiral tube reducer according to claim 2, characterized in that, The inner wall of the sealing sleeve is provided with one or more pairs of the inner oil seal and the outer oil seal combination.

4. The spiral tube reducer according to claim 3, characterized in that, The inner diameter of the sealing gland is larger than the diameter of the output shaft and smaller than the diameter of the inner wall of the sealing sleeve.

5. The spiral tube reducer according to claim 1, characterized in that, The outer wall of the sealing sleeve is provided with several lugs, which are fixedly connected to the output flange.

6. The spiral tube reducer according to claim 1, characterized in that, The near end face of the sealing sleeve is provided with an annular groove, and the output end flange is provided with an annular positioning protrusion corresponding to the annular groove.

7. The spiral tube reducer according to claim 1, characterized in that, The inner wall of the sealing sleeve is provided with an annular boss that extends radially inward, and the annular boss is in clearance fit with the output shaft.

8. The spiral tube reducer according to claim 1, characterized in that, The sealing cap has an upper half cap with a relatively large first outer diameter and a lower half cap with a relatively small second outer diameter, thereby forming a stepped structure, wherein the second outer diameter is equivalent to the diameter of the inner wall of the sealing sleeve.

9. The spiral tube reducer according to any one of claims 1 to 8, characterized in that, The sealing cap has several through holes, and the sealing sleeve has corresponding threaded holes at each of the through holes. The sealing cap and the sealing sleeve are connected by external bolts.

10. The spiral tube reducer according to claim 9, characterized in that, The through holes of the sealing gland are formed as countersunk holes.

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