Novel rotary sealing device of packaging machine

Abstract

The utility model relates to the field of rotary sealing of packaging machines, and discloses a novel rotary sealing device of a packaging machine, which comprises a connecting pipe, a sleeve is arranged at the lower part of the connecting pipe, a rotating pipe is rotatably connected to the inner wall of the sleeve, a sealing mechanism is arranged on the inner side of the sleeve, and the sealing mechanism comprises a sealing assembly and a limiting assembly. The sealing assembly comprises oil seals, the oil seals are arranged on the inner wall of the sleeve, the number of the oil seals is two, conveying pipes are arranged on the opposite sides of the two oil seals and fixedly connected to the inner wall of the sleeve in a penetrating mode, and a storage box is arranged on the outer side of the sleeve. By arranging the two groups of oil seals and filling the lubricating grease on the inner walls of the two groups of oil seals, the sealing effect can be effectively enhanced, material overflow is reduced, friction between the rotating pipe and the oil seals is reduced through the lubricating grease, continuous and stable sealing is achieved when the packing machine rotates, the problem of material leakage caused by easy extrusion of traditional packing sealing is solved, and the working environment is kept clean; the equipment cleaning and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rotary sealing of cement packing machine, especially to a new rotary sealing device of cement packing machine. BACKGROUND

[0002] Cement packing machine is a special equipment necessary for bagged cement production, which is used to complete automatic packing of cement and can also be used to pack other powdery materials (such as fly ash, cement additives, etc.) with good flow performance, so it is still widely used in small and medium-sized cement plants.

[0003] The cement packing machine ash feeding system is connected by the elevator through the vibrating screen into the weighing bin, the material in the weighing bin is fed by the rigid impeller feeder through the rotary seal into the packing machine, and the ordinary rotary seal is inserted by two steel pipes with different diameters, and the middle is sealed by packing.

[0004] During use, due to the rotation and extrusion of the packing machine, vibration is generated, which causes uneven stress on the packing, and the packing in the internal sealing is extruded due to overload in the local area, resulting in material overflow. When the packing is frequently replaced, the equipment needs to be shut down, thereby reducing the working efficiency of the device, and at the same time, due to the overflow of the material, the nearby equipment is contaminated with dust, which is difficult to clean, increasing the labor intensity of the workers. Therefore, a new rotary sealing device of cement packing machine is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a new rotary sealing device of cement packing machine, which aims to solve the problem of "due to the rotation and extrusion of the packing machine, vibration is generated, which causes uneven stress on the packing, and the packing in the internal sealing is extruded, resulting in material overflow" in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a new rotary sealing device of cement packing machine, including connecting pipe, the lower part of connecting pipe is provided with sleeve, the inner wall of sleeve is rotatably connected with rotating pipe, the inner side of sleeve is provided with sealing mechanism, the sealing mechanism includes sealing assembly and limiting assembly, the sealing assembly includes oil seal, the oil seal is arranged on the inner wall of sleeve, the oil seal is provided with two groups, the opposite side of two groups of oil seal is provided with conveying pipe, the conveying pipe is fixedly connected in the inner wall of sleeve, the outer side of sleeve is provided with storage box, the conveying pipe is fixedly connected in the inner wall of storage box, the upper inner wall of storage box is slidably connected with moving rod, the bottom end of moving rod is fixedly connected with extrusion plate, the extrusion plate is connected with the inner wall of storage box through a piston, the inner wall of storage box close to the conveying pipe is provided with one-way valve.

[0007] As a further description of the above technical scheme:

[0008] The limiting assembly comprises a moving plate, the moving plate is fixedly connected to the outer side of the moving rod, a clamping groove is formed in the outer side of the moving plate, a fixed block is fixedly connected to the outer side of the storage box, a limiting piece is slidably connected to the inner wall of the fixed block, and the limiting piece is inserted into the inner wall of the clamping groove.

[0009] As a further description of the above technical solution:

[0010] The limiting piece is provided with two groups, a receiving groove is formed in the opposite side of the two groups of limiting pieces, a hinge rod is rotatably connected to the inner wall of the receiving groove, and a connecting rod is rotatably connected to the end of the hinge rod away from the limiting piece.

[0011] As a further description of the above technical solution:

[0012] The lower inner wall of the fixed block is slidably connected to a limiting block, a guide groove is formed in the upper part of the limiting block, the lower part of the connecting rod is slidably connected to the inner wall of the guide groove, the lower part of the limiting block is elastically connected to the fixed block through a compression spring, an operating plate is fixedly connected to the outer side of the limiting block, and the operating plate is slidably connected to the inner wall of the fixed block.

[0013] As a further description of the above technical solution:

[0014] The lower part of the limiting block is hollow, one end of the compression spring is fixedly connected to the inner wall of the hollow part of the lower part of the limiting block, and the other end of the compression spring is fixedly connected to the inner wall of the fixed block.

[0015] As a further description of the above technical solution:

[0016] The lower part of the limiting block is hollow, one end of the compression spring is fixedly connected to the inner wall of the hollow part of the lower part of the limiting block, and the other end of the compression spring is fixedly connected to the inner wall of the fixed block.

[0017] As a further description of the above technical solution:

[0018] The lower part of the limiting piece and the upper corner of the limiting block are provided with inclined surfaces.

[0019] As a further description of the above technical solution:

[0020] The inner wall of the oil seal is filled with lubricating grease.

[0021] The utility model has the advantages of:

[0022] 1、The utility model discloses a sealing device for a rotary machine, which comprises a rotary machine, a rotary pipe, an oil seal and a lubricating grease, wherein the rotary pipe is arranged on the rotary machine and is provided with a rotating pipe body and a rotating pipe cover; the oil seal is arranged on the rotary pipe cover and is provided with an oil seal body and an oil seal cover; the lubricating grease is filled in the inner wall of the oil seal.

[0023] 2. The utility model discloses, through the cooperation of sealing assembly and spacing assembly, pull operating plate removes the fixed of spacing piece, when push mobile pole makes extrusion board extrude the lubricating grease in storage box, one way valve ensures its one way delivery, need not stop to supplement, improve work efficiency, reduce maintenance difficulty and cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the three-dimensional structure schematic diagram of the whole device in the utility model;

[0025] Figure 2 It is the three-dimensional structure schematic diagram of oil seal and delivery pipe in the utility model;

[0026] Figure 3 It is the three-dimensional structure schematic diagram of extrusion board and one way valve in the utility model;

[0027] Figure 4 It is the right view three-dimensional structure section schematic diagram of fixed block in the utility model;

[0028] Figure 5 It is the split three-dimensional structure schematic diagram of spacing assembly in the utility model.

[0029] Legend:

[0030] 1, connecting pipe, 2, sleeve, 3, rotating pipe, 41, oil seal, 42, delivery pipe, 43, storage box, 44, mobile pole, 45, extrusion board, 46, one way valve, 51, moving plate, 52, clamping groove, 53, fixed block, 54, spacing piece, 55, storage slot, 56, hinged rod, 57, connecting rod, 61, spacing block, 62, guide slot, 63, compression spring, 64, operating plate. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0032] Reference Figure 1 - Figure 3The utility model provides a kind of new type package machine rotary sealing device, including connecting pipe 1, for being connected with the other pipeline of package machine ash system, it is the passageway of material into package machine, connecting pipe 1 lower part is provided with sleeve pipe 2, play the role of protection and support rotating pipe 3, rotating pipe 3 is rotatably connected in sleeve pipe 2 inner wall, it is the passageway of material delivery, rotates along with the operation of package machine, material is delivered from connecting pipe 1 to package machine interior, realizes the transfer function of material, sleeve pipe 2 inside is provided with sealing mechanism, sealing mechanism includes sealing assembly and limit component, sealing assembly includes oil seal 41, oil seal 41 is arranged in sleeve pipe 2 inner wall, oil seal 41 is provided with two groups, and sealing space is formed in the middle, effectively blocks material overflow, prevents dust from leaking to the outside of equipment, oil seal 41 inner wall is filled with lubricating grease, not only enhance sealing effect, but also can reduce the friction between rotating pipe 3 and oil seal 41, reduce abrasion, prolong equipment service life, guarantee the smooth rotation of rotating pipe 3, two groups of oil seal 41 relative side is provided with delivery pipe 42, connecting storage tank 43 and oil seal 41, its effect is that lubricating grease in storage tank 43 is delivered to oil seal 41, ensure that oil seal 41 is always in good lubrication state, maintain sealing performance.

[0033] With reference to Figure 1 - Figure 3 Delivery pipe 42 is fixedly connected in sleeve pipe 2 inner wall, sleeve pipe 2 outside is provided with storage tank 43, for storing lubricating grease, ensure that there is enough reserve when needing to supplement lubricating grease, ensure the continuous and stable operation of sealing device, delivery pipe 42 is fixedly connected in storage tank 43 inner wall, slidingly connected with moving rod 44 in storage tank 43 upper inner wall, by pushing moving rod 44, drive extrusion plate 45 extrude lubricating grease in storage tank 43, make it flow to oil seal 41 through delivery pipe 42, realize the supplement function of lubricating grease, the height of moving rod 44 can be observed simultaneously the amount of lubricating grease in storage tank 43, judge whether it needs to add lubricating grease, moving rod 44 bottom end is fixedly connected with extrusion plate 45, for extruding lubricating grease in storage tank 43, make it enter into delivery pipe 42 through one-way valve 46, extrusion plate 45 piston is connected in storage tank 43 inner wall, one-way valve 46 is provided in the inner wall of storage tank 43 close to delivery pipe 42, ensure the one-way delivery of lubricating grease, prevent backflow.

[0034] With reference to Figure 3 - Figure 5The limiting assembly comprises a moving plate 51 fixedly connected to the outer side of the moving rod 44, a clamping groove 52 is formed in the outer side of the moving plate 51, the clamping groove 52 is used for cooperating with a limiting piece 54, the moving plate 51 and the clamping groove 52 can accurately control the position of the moving rod 44 when supplementing the lubricating grease, so as to ensure that the extrusion plate 45 accurately extrudes the lubricating grease in the storage box 43, and at the same time, the moving rod 44 is limited when the lubricating grease is not supplemented, the storage box 43 is fixedly connected with a fixed block 53 on the outer side, the fixed block 53 is used for supporting the limiting piece 54, the limiting piece 54 is slidably connected to the inner wall of the fixed block 53, the outer side of the limiting piece 54 is provided in a toothed shape and can be inserted into the inner wall of the clamping groove 52, and the outer side of the limiting piece 54 is inserted into the inner wall of the clamping groove 52.

[0035] With reference to Figure 3 - Figure 5 The limiting piece 54 is provided with two groups, a receiving groove 55 is formed in the opposite side of the two groups of limiting pieces 54, the articulated rod 56 can be accommodated in the two groups of limiting pieces 54 when the two groups of limiting pieces 54 are opposite to each other, the articulated rod 56 is rotatably connected to the inner wall of the receiving groove 55 and is used for connecting the limiting piece 54 and a connecting rod 57, the connecting rod 57 is rotatably connected to the end, away from the limiting piece 54, of the articulated rod 56 and is used for connecting a plurality of articulated rods 56, the connecting rod 57 is moved, so that the articulated rod 56 drives the two groups of limiting pieces 54 to move in opposite directions.

[0036] With reference to Figure 3 - Figure 5 The lower inner wall of the fixed block 53 is slidably connected with a limiting block 61, the limiting block 61 provides a guide function for the movement of the connecting rod 57 and ensures that the moving direction of the connecting rod 57 is accurate, at the same time, the limiting block 61 is clamped on the outer side of the two groups of limiting pieces 54, so that the limiting piece 54 can be limited, the limiting block 61 prevents the limiting piece 54 from loosening, a guide groove 62 is formed in the upper portion of the limiting block 61 and provides a stable moving track for the connecting rod 57, when the connecting rod 57 is not extruded on the inner wall of the guide groove 62, the limiting piece 54 can be first released from the limiting by moving the limiting block 61 downward, and then the connecting rod 57 is pulled, the lower portion of the connecting rod 57 is slidably connected to the inner wall of the guide groove 62, and the lower portion of the limiting block 61 is elastically connected to the fixed block 53 through a compression spring 63.

[0037] With reference to Figure 3 - Figure 5The lower part of the limiting block 61 is hollow, one end of the compression spring 63 is fixedly connected to the inner wall of the hollow part of the lower part of the limiting block 61, the other end of the compression spring 63 is fixedly connected to the inner wall of the fixed block 53, after the limiting block 61 and the connecting rod 57 move, the self-elastic force is used to reset them, so that the limiting assembly can work repeatedly and normally, the operating plate 64 is fixedly connected to the outer side of the limiting block 61, the operating plate 64 is slidingly connected to the inner wall of the fixed block 53, the operating personnel drives the limiting block 61 to move through the operating plate 64, and then the plug connection and separation of the limiting piece 54 and the clamping groove 52 are controlled, so that the limiting of the moving rod 44 is released and fixed, the baffle is fixedly connected to the lower part of the operating plate 64 and slidingly arranged on the outer side of the fixed block 53, so that the dust can be prevented from entering the fixed block 53, and the upper part of the limiting block 61 and the lower part of the limiting piece 54 are provided with inclined surfaces at the edges, so that the limiting block 61 is inserted into the side between the two limiting pieces 54, the limiting block 61 is limited, and the stability of the device is improved.

[0038] Working principle: in use, the material is transported from the connecting pipe 1 to the inside of the bag machine along with the operation of the bag machine, and the material transfer is completed, in the process, the two groups of oil seals 41 on the inner wall of the sleeve pipe 2 begin to play a sealing role, a sealed space is formed between the two groups of oil seals 41, the material overflow is effectively blocked, the dust leakage to the outside of the equipment is prevented, meanwhile, the grease filled in the inner wall of the oil seal 41 further enhances the sealing effect, reduces the friction between the rotating pipe 3 and the oil seal 41, reduces the wear, and ensures the smooth rotation of the rotating pipe 3.

[0039] When the grease needs to be supplemented, the operating personnel pulls the operating plate 64, the operating plate 64 drives the limiting block 61 to slide on the inner wall of the fixed block 53, the limiting block 61 moves downward under the pulling of the operating plate 64, the compression spring 63 is compressed, the limiting block 61 is separated from the outer side of the limiting piece 54, the limiting of the limiting piece 54 is released, the limiting block 61 is continuously pulled, the connecting rod 57 is pulled through the guide groove 62, the connecting rod 57 drives the hinged rod 56 to rotate, the two groups of limiting pieces 54 move in the opposite directions, so as to separate from the plug connection with the clamping groove 52 on the moving plate 51, and the limiting of the moving rod 44 is released, at this time, the moving rod 44 is pushed, and the extrusion plate 45 extrudes the grease in the storage box 43.

[0040] The grease is extruded by the extrusion plate 45, flows to the oil seal 41 through the conveying pipe 42 and the one-way valve 46, the one-way valve 46 ensures that the grease can only flow from the storage box 43 to the oil seal 41 in one direction, prevents backflow, and the grease reaches the oil seal 41 along the conveying pipe 42, so that the oil seal 41 is always in a good lubricated state and maintains the sealing performance.

[0041] After the lubricating grease is supplemented, the operation plate 64 is loosened, the compression spring 63 restores the elastic deformation, and the limiting block 61 is pushed to move upward. The limiting block 61 drives the connecting rod 57 to move, the connecting rod 57 drives the two groups of limiting members 54 to re-insert into the clamping grooves 52 of the moving plate 51 through the hinged rods 56, the moving rod 44 is limited again to prevent it from moving at will, and preparation is made for the next time of supplementing the lubricating grease.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A new type of rotary seal for a mechanical seal, comprising a connecting pipe (1), characterized in that: The connecting pipe (1) lower part is provided with a sleeve (2), the sleeve (2) inner wall is rotatably connected with a rotating pipe (3), the sleeve (2) inner side is provided with a sealing mechanism, the sealing mechanism includes a sealing assembly and a limiting assembly, the sealing assembly includes an oil seal (41), the oil seal (41) is arranged on the inner wall of the sleeve (2), the oil seal (41) is provided with two groups, the opposite side of the two groups of oil seal (41) is provided with a conveying pipe (42), the conveying pipe (42) penetrates and is fixedly connected to the inner wall of the sleeve (2), the outer side of the sleeve (2) is provided with a storage box (43), the conveying pipe (42) is fixedly connected to the inner wall of the storage box (43), the upper inner wall of the storage box (43) is slidably connected with a moving rod (44), the bottom end of the moving rod (44) is fixedly connected with an extrusion plate (45), the extrusion plate (45) is connected to the inner wall of the storage box (43), the inner wall of the storage box (43) is provided with a one-way valve (46) close to the conveying pipe (42).

2. A rotary seal of the type described in claim 1, wherein: The limiting assembly includes a moving plate (51), the moving plate (51) is fixedly connected to the outer side of the moving rod (44), the outer side of the moving plate (51) is provided with a clamping groove (52), the outer side of the storage box (43) is fixedly connected with a fixed block (53), the inner wall of the fixed block (53) is slidably connected with a limiting piece (54), the outer side of the limiting piece (54) is inserted into the inner wall of the clamping groove (52).

3. A rotary seal of the type described in claim 2, wherein: The limiting piece (54) is provided with two groups, the opposite side of the two groups of limiting piece (54) is provided with a receiving groove (55), the inner wall of the receiving groove (55) is rotatably connected with a hinged rod (56), the end of the hinged rod (56) away from the limiting piece (54) is rotatably connected with a connecting rod (57).

4. A rotary seal of the type described in claim 3, wherein: The lower inner wall of the fixed block (53) is slidably connected with a limiting block (61), the upper part of the limiting block (61) is provided with a guide groove (62), the lower part of the connecting rod (57) is slidably connected to the inner wall of the guide groove (62), the lower part of the limiting block (61) is elastically connected with the fixed block (53) through a compression spring (63), the outer side of the limiting block (61) is fixedly connected with an operation plate (64), the operation plate (64) is slidably connected to the inner wall of the fixed block (53).

5. A rotary seal of the type described in claim 4 wherein: The lower part of the limiting block (61) is hollow, one end of the compression spring (63) is fixedly connected to the inner wall of the hollow part of the lower part of the limiting block (61), the other end of the compression spring (63) is fixedly connected to the inner wall of the fixed block (53).

6. A rotary seal of the type described in claim 4 wherein: The lower part of the operation plate (64) is fixedly connected with a baffle, the baffle is slidably connected to the outer side of the fixed block (53).

7. A rotary seal of the type described in claim 4 wherein: The lower part of the limiting piece (54) and the upper part of the limiting block (61) are provided with inclined surfaces.

8. A rotary seal according to claim 1, wherein: The inner wall of the oil seal (41) is filled with lubricating grease.

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