Block breaking machine used under vacuum condition
By adopting three-channel tight sealing structure and nitrogen purge technology in the block breaker, the problem of poor sealing under vacuum conditions is solved, effectively preventing leakage of polluted gases and materials, ensuring the stability of the block breaker cavity and Security.
Patent Information
- Application Number
- CN202323263811.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-11-30
AI Technical Summary
The existing block breakers have poor sealing under vacuum conditions, which makes it difficult to detect material leakage and cannot be used for materials of all properties.
Adopt three-way tight sealing structure, pushing layer by layer, including the first, second and third sealing compartments, air sealing rings, sealing ring components and pressure glands, combining locking rings and nitrogen purge structures to ensure sealing and prevent polluted gas leakage.
Effectively prevent leakage of polluted gases and materials, ensure the sealing of the broken cavity, timely detect leakage through the negative pressure measurement mechanism and remind the replacement of the seal, improving the reliability of the broken machine under vacuum conditions.
Smart Images
Figure CN222240596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of block breakers, in particular to a block breaker used under vacuum conditions. Background Art
[0002] At present, there are many types of block breakers, which are widely used in many fields, such as chemical, pharmaceutical, food, coating, mining, coal, metallurgical industry, etc. However, there is no block breaker suitable for all materials. Therefore, people have developed various block breakers according to the characteristics of the materials (strength, hardness, viscosity, easy agglomeration, etc.) and production needs (fineness of crushing, whether it is easy to clean, output, uniformity, etc.). However, their working environment is mostly a block breaking working environment under positive pressure conditions. Under such conditions, material leakage is easy to detect. If the block breakers used under vacuum conditions are not well sealed, material leakage is difficult to detect. Therefore, it is necessary to provide a block breaker suitable for use under vacuum conditions and with good sealing. Utility Model Content
[0003] The utility model solves the problems in the related art and provides a block breaker used under vacuum conditions. The utility model adopts a three-stage tight-compression sealing structure and advances layer by layer, which can effectively prevent the polluted gas from leaking and entering the block breaker cavity.
[0004] In order to solve the above technical problems, the utility model is realized through the following technical solutions: a block breaker used under vacuum conditions, comprising a reduction motor, a casing, a static knife seat, a block breaker knife, and a transmission shaft, wherein the reduction motor is connected to the transmission shaft, and the transmission shaft passes through the casing and the static knife seat, and the block breaker knife is installed on the transmission shaft, and the transmission shaft on both sides of the block breaker knife is outer-mounted with a first sealing spacer and a second sealing spacer, and the first air sealing ring, the first sealing ring assembly, the first retaining ring, the third sealing ring and the first pressure cover are sequentially installed on the transmission shaft on the side of the first sealing spacer away from the block breaker knife, and the second air sealing ring, the second sealing ring assembly, the second retaining ring, the seventh sealing ring and the fourth pressure cover are sequentially installed on the transmission shaft on the side of the second sealing spacer away from the block breaker knife.
[0005] As a preferred solution, the block breaking knife is installed on the transmission shaft through a first key bar, and the reduction motor is connected to the transmission shaft through a second key bar.
[0006] As a preferred solution, the first sealing ring assembly includes a first sealing ring seat, a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer circumference of the first sealing ring seat, and the second sealing ring is installed in the center hole of the first sealing ring seat.
[0007] As a preferred solution, the second sealing ring assembly includes a second sealing ring seat, a fifth sealing ring and a sixth sealing ring, the fifth sealing ring is sleeved on the outer circumference of the second sealing ring seat, and the sixth sealing ring is installed in the center hole of the second sealing ring seat.
[0008] As a preferred solution, the first pressure cover and the fourth pressure cover are both tightened by tightening bolts, the first pressure cover is located in the protective cover, the fourth pressure cover is located in the connecting seat, the connecting seat is detachably installed between one end of the casing and the reduction motor, the other end of the casing is detachably installed with a bearing seat, a bearing is installed in the bearing seat and is tightened by the third pressure cover, and the second pressure cover is installed at the outer end of the bearing seat.
[0009] As a preferred solution, a locking ring is installed on the transmission shaft between the second sealing spacer and the block breaking knife through a locking top screw.
[0010] As a preferred solution, two flow meters are installed on the shaft seats at both ends of the casing through compression fittings, the flow meters are installed on the outer periphery of the casing through brackets, the inlet of the flow meter is connected to the filter pressure reducing valve through a tee, the filter pressure reducing valve is connected to the needle valve, and the needle valve is connected to the nitrogen source through a connecting flange.
[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts a three-layer compression sealing structure, which is advanced layer by layer and can effectively prevent the pollution gas from leaking and entering the block breaking cavity; the single-end locking structure prevents the transmission shaft from moving and ensures the stability of the sealing structure; the transmission shaft and the block breaking knife are tightly clamped together by a locking ring to prevent vibration caused by transmission; a nitrogen purge structure is adopted to prevent materials from entering the sealing cavity; the negative pressure measurement mechanism can detect leakage in time and remind to replace the seal in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 3 It is a cross-sectional view of the utility model;
[0015] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.
[0016] In the figure:
[0017] 1. Gear motor, 2. Casing, 3. Stationary knife seat, 4. Block breaker, 5. First sealing sleeve, 6. First air seal ring, 7. First sealing ring, 8. Second sealing ring, 9. First sealing ring seat, 10. First retaining ring, 11. Third sealing ring, 12. First gland, 13. Shield, 14. First bolt, 15. Bearing seat, 16. Fourth sealing ring, 17. Bearing, 18. Second gland, 19. Third gland, 20. Second bolt, 21. Clamping bolt, 22. Transmission shaft, 23. The first key strip, 24, the block-breaking knife spacer, 25, the locking top screw, 26, the locking ring, 27, the second sealing spacer, 28, the second air seal ring, 29, the fifth sealing ring, 30, the sixth sealing ring, 31, the second sealing ring seat, 32, the second retaining ring, 33, the seventh sealing ring, 34, the fourth pressure cover, 35, the connecting seat, 36, the shaft seat, 37, the locking bolt, 38, the second key strip, 39, the flow meter, 40, the filter pressure reducing valve, 41, the needle valve, 42, the connecting flange, 43, the third bolt. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0022] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0024] like Figures 1 to 4As shown, a block breaker used under vacuum conditions includes a reduction motor 1, a casing 2, a static knife seat 3, a block breaker 4, and a transmission shaft 22. The reduction motor 1 is connected to the transmission shaft 22. The casing 2 has flange seats on the top and bottom and passes through them. The left and right sides are shaft seats 36. The outer side of the shaft seat 36 has a flange seat. The shaft seat 36 has a hole and passes through the center of the outer circumference of the columnar casing 2 at an equal distance from the upper and lower flange surfaces; the static knife seat 3 is installed in the casing 2 by a third bolt 43, and the static knife seat 3 has two holes for the transmission shaft 22 to pass through. The transmission shaft 22 passes through the casing 2 and the static knife seat 3. A plurality of block breaker knives 4 are installed on the transmission shaft 22 at intervals, and each block breaker 4 is installed between them. There is a block-breaking knife spacer 24, and the transmission shaft 22 on both sides of the block-breaking knife 4 is covered with a first sealing spacer 5 and a second sealing spacer 27, wherein the first sealing spacer 5 and the second sealing spacer 27 are tightly fitted on the transmission shaft 22 to ensure that no gas or dust overflows from the two sealing spacers, and the outer circumference of the first sealing spacer 5 and the second sealing spacer 27 and the inner hole of the shaft seat 36 of the casing 2 form a small gap exhaust structure to prevent dust or materials from accumulating in the small gap and getting stuck in rotation; the first air seal ring 6, the first sealing ring assembly, the first retaining ring 10, the third sealing ring 11 and the first gas seal ring 6 are installed in sequence on the transmission shaft 22 on the side of the first sealing spacer 5 away from the block-breaking knife 4. A second gas seal ring 28, a second sealing ring assembly, a second retaining ring 32, a seventh sealing ring 33 and a fourth pressure cap 34 are sequentially installed on the transmission shaft 22 on the side of the second sealing spacer 27 away from the block breaking knife 4; wherein, the first gas seal ring 6 and the second gas seal ring 28 symmetrically arranged on both sides form a first sealing structure, and the first gas seal ring 6 is used as an example for explanation: the outer circumference of the first gas seal ring 6 is tightly fitted with the transmission shaft 22 and the hole of the shaft seat 36 to prevent air leakage; the inner circumference of the first gas seal ring 6 has a common fitting portion, which is tightly fitted with the outer circumference of the transmission shaft 22 to a certain tightness to prevent gas from overflowing from the inner circumference of the first gas seal ring 6; at the same time, the first gas seal A part of the inner circumference of the ring 6 and the outer circumference of the transmission shaft 22 form an air intake cavity. The sealing gas can enter the air intake cavity from the outside through the air intake hole of the first air seal ring 6, and then enter the small gap exhaust structure formed by the first sealing spacer 5 and the casing 2 to prevent material accumulation and jamming. The first air seal ring 6 is a circular ring structure with a groove on the outer diameter. A plurality of air intake holes are provided at the groove, which are connected to an external air source for nitrogen purging. The inner diameter is a desktop structure for fitting and exhausting. The first sealing ring assembly and the second sealing ring assembly symmetrically arranged on both sides form a second sealing structure, which is tightly fitted with the outer circumference of the transmission shaft 22 and the inner hole of the shaft seat 36 to prevent leakage.The first retaining ring 10, the third sealing ring 11, the first gland 12, the second retaining ring 32, the seventh sealing ring 33 and the fourth gland 34 symmetrically arranged on both sides form a third sealing structure. The third sealing structure on one side is now described as an example: the third sealing ring 11 is close to the end face of the first retaining ring 10, which is a multi-layer sealing body. One end face of the first gland 12 is close to one end face of the third sealing ring 11. By tightening the nut on the bolt 21, the first gland 12 is pressed inward, so that the first retaining ring 10 and the third sealing ring 11 are pressed tightly on the outer circumference of the inner hole of the shaft seat of the housing 2 and the outer circumference of the transmission shaft 22, and the sealing is performed to prevent air leakage. ;
[0025] In one embodiment, the block breaking knife 4 is mounted on the transmission shaft 22 via a first key bar 23 , and the reduction motor 1 is connected to the transmission shaft 22 via a second key bar 38 .
[0026] In one embodiment, the first sealing ring assembly includes a first sealing ring seat 9, a first sealing ring 7 and a second sealing ring 8, wherein the first sealing ring seat 9 is an internal and external groove and boss ring structure, the first sealing ring 7 is sleeved on the outer periphery of the first sealing ring seat 9, and there are two second sealing rings 7 and they are installed in the center hole of the first sealing ring seat 9.
[0027] In one embodiment, the second sealing ring assembly includes a second sealing ring seat 31, a fifth sealing ring 29 and a sixth sealing ring 30. The fifth sealing ring 29 is sleeved on the outer circumference of the second sealing ring seat 31. There are two sixth sealing rings 30 and they are installed in the center hole of the second sealing ring seat 31.
[0028] In one embodiment, the first gland 12 and the fourth gland 34 are both tightened by the tightening bolts 21, the first gland 12 is located in the shield 13, specifically, a rectangular hole is opened on the shaft seat 36 at the left end of the casing 2, and the shield 13 is pressed on the rectangular hole by screws on the outside; the fourth gland 34 is located in the connecting seat 35, and the connecting seat 35 is detachably installed between one end of the casing 2 and the reduction motor 1 by the locking bolts 37. Specifically, both ends of the connecting seat 35 are flange seat structures, and one end of the connecting seat 35 is tightened by The bolt 37 is connected to the flange seat on the reduction motor 1, and the other end is connected to the flange seat on the shaft seat 36 of the casing 2 through the locking bolt 37; the other end of the casing 2 is detachably mounted with a bearing seat 15 through a first bolt 14, a bearing 17 is mounted in the bearing seat 15 and is clamped by a third pressure cover 19, the third pressure cover 19 is fixed by a second bolt 20, and a second pressure cover 18 is mounted on the outer end of the bearing seat 15 by a screw. This single-end locking structure of the transmission shaft 22 can prevent the transmission shaft 22 from moving, thereby ensuring the stability of the sealing structure.
[0029] In one embodiment, a locking ring 26 is installed on the transmission shaft 22 between the second sealing spacer 27 and the block breaking knife 4 through a locking top screw 25, so that the block breaking knife 4 and the transmission shaft 22 are locked together to prevent vibration caused by transmission.
[0030] In one embodiment, two flow meters 39 are installed on the shaft seats 36 at both ends of the casing 2 through a ferrule joint (the ferrule joint here is connected to the first air sealing ring 6 in the shaft seat 36), the flow meter 39 is installed on the outer periphery of the casing 2 through a bracket, and the inlet of the flow meter 39 is connected to the filter pressure reducing valve 40 through a tee, the filter pressure reducing valve 40 is connected to the needle valve 41, there is a pressure gauge indicating the value on the filter pressure reducing valve 40, the needle valve 41 is connected to the nitrogen source through the connecting flange 42, so as to perform nitrogen purging, and the nitrogen enters the first air sealing ring 6 for purging, preventing the material from entering the sealing cavity. At the same time, the flow meter 39, the filter pressure reducing valve 40, and the needle valve 41 also form a negative pressure measuring mechanism, which can detect leakage in time and remind to replace the seal in time.
[0031] The above are preferred implementation modes of the present invention. Technicians in the field to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by technicians in this field on the basis of the present invention belong to the protection scope of the present invention.
Claims
1. A block breaker used under vacuum conditions, comprising a reduction motor, a housing, a static knife seat, a block breaker, and a transmission shaft, wherein the reduction motor is connected to the transmission shaft, the transmission shaft passes through the housing and the static knife seat, and the block breaker is installed on the transmission shaft, characterized in that: The transmission shaft sleeves on both sides of the block-breaking knife are provided with a first sealing sleeve and a second sealing sleeve. The first air sealing ring, the first sealing ring assembly, the first retaining ring, the third sealing ring and the first pressure cover are installed in sequence on the transmission shaft on the side of the first sealing sleeve away from the block-breaking knife. The second air sealing ring, the second sealing ring assembly, the second retaining ring, the seventh sealing ring and the fourth pressure cover are installed in sequence on the transmission shaft on the side of the second sealing sleeve away from the block-breaking knife.
2. The block breaker used under vacuum conditions according to claim 1, characterized in that: The block breaking knife is installed on the transmission shaft through a first key bar, and the reduction motor is connected to the transmission shaft through a second key bar.
3. The block breaker used under vacuum conditions according to claim 1, characterized in that: The first sealing ring assembly comprises a first sealing ring seat, a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer periphery of the first sealing ring seat, and the second sealing ring is installed in the center hole of the first sealing ring seat.
4. The block breaker used under vacuum conditions according to claim 1, characterized in that: The second sealing ring assembly comprises a second sealing ring seat, a fifth sealing ring and a sixth sealing ring. The fifth sealing ring is sleeved on the outer circumference of the second sealing ring seat, and the sixth sealing ring is installed in the center hole of the second sealing ring seat.
5. The block breaker used under vacuum conditions according to claim 1, characterized in that: The first pressure cover and the fourth pressure cover are both tightened by tightening bolts, the first pressure cover is located in the protective cover, the fourth pressure cover is located in the connecting seat, the connecting seat is detachably installed between one end of the casing and the reduction motor, the other end of the casing is detachably installed with a bearing seat, a bearing is installed in the bearing seat and is tightened by the third pressure cover, and the second pressure cover is installed at the outer end of the bearing seat.
6. The block breaker used under vacuum conditions according to claim 1, characterized in that: A locking ring is installed on the transmission shaft between the second sealing spacer and the block breaking knife through a locking top screw.
7. The block breaker used under vacuum conditions according to claim 1, characterized in that: Two flow meters are installed on the shaft seats at both ends of the casing through ferrule joints. The flow meters are installed on the outer periphery of the casing through brackets. The inlet of the flow meter is connected to the filter pressure reducing valve through a tee. The filter pressure reducing valve is connected to a needle valve. The needle valve is connected to a nitrogen source through a connecting flange.