A planar seal structure and a conveying apparatus

Abstract

The utility model provides a kind of conveying equipment including plane sealing structure, plane sealing structure includes shell and transmission shaft passing through shell, still be provided with the waist-shaped slot hole for transmission shaft transverse movement on shell, a pair of guide pad blocks is fixed outside in the both ends of waist-shaped slot hole on shell outside, sliding plate is also set outside transmission shaft between two guide pad blocks, plane sealing element is also padded between sliding plate and shell, two pressure blocks are also pressed and set on two guide pad blocks, and two pressure blocks partially cover above sliding plate, elastic abutting member is also set on two pressure blocks and elastically abuts on sliding plate, and rolling element is also set between elastic abutting member and sliding plate. The utility model solves the problem of needing to pay attention to whether sliding plate is tightly pressed in prior art.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a planar sealing structure and conveying equipment. Background Technology

[0002] In conveying equipment, such as bucket elevators and scraper conveyors, which are enclosed conveying devices, it is often necessary to maintain a basic tension in the conveyor chain to ensure the normal transport of materials. Maintaining tension is typically achieved in the industry using a tail tensioning device.

[0003] When using the tail tensioning device, a slotted hole needs to be cut into the equipment housing to prevent interference and collision between the drive shaft and drive wheel and the housing during adjustment. Due to the presence of the slotted hole, coupled with wear of the planar seals (such as rubber or felt layers), the normally sealed internal cavity of the equipment can easily connect to the atmosphere, leading to leaks, spills, and other abnormalities. Currently, the conveying equipment industry generally uses two guide rail assemblies symmetrical to the central axes of the drive shaft and drive wheel on the housing to restrict the sliding plate assembly to slide only within the rectangular groove formed by the guide rail assemblies. The guide rail assembly consists of guide pads and two guide pressure blocks joined together. For the dynamic sealing of the sliding plate at the tail of the conveying equipment, the traditional method is to use a planar seal on the plane adjacent to the equipment housing, adhesively bonding it to the sliding plate or riveting it to the sliding plate. Then, hexagonal nuts are welded to the guide pressure blocks, and tightening the hexagonal bolts causes the ends of the hexagonal bolts to press against the sliding plate, achieving a very basic sealing effect. During equipment operation, it is necessary to constantly monitor whether the ends of the hex bolts are tightly pressed against the sliding plate, which increases the burden and workload for inspection workers. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a planar sealing structure, which solves the problem of needing to constantly monitor whether the sliding plate is tightly pressed together.

[0005] According to an embodiment, a planar sealing structure is provided, comprising a housing and a drive shaft penetrating the housing. The housing is further provided with an oblong slot for lateral movement of the drive shaft. A pair of guide blocks are fixed to the outside of the housing, located outside both ends of the oblong slot. A sliding plate, sleeved on the drive shaft, is provided between the two guide blocks. A planar sealing element is also provided between the sliding plate and the housing. Pressure blocks are also pressed onto the two guide blocks, with the two pressure blocks partially covering the sliding plate. Elastic abutment elements are also provided on the two pressure blocks, elastically abutting against the sliding plate. A rolling element is also provided between the elastic abutment element and the sliding plate. This solution uses the cooperation of the elastic abutment element and the rolling element to press the sliding plate together. When the sliding plate is displaced, the rolling element adapts and rolls to maintain the pressing state against the sliding plate, thus eliminating the need to constantly monitor whether the sliding plate is pressed tightly.

[0006] Furthermore, the elastic abutment includes an outer sleeve connected to the pressure block, a limiting post threaded to one end of the outer sleeve, and a spring located inside the outer sleeve and abutting against the limiting post. The rolling element includes a guide post located inside the outer sleeve and abutting against the end of the spring away from the limiting post and slidingly contacting the inner wall of the outer sleeve. The end of the guide post away from the spring is recessed and provided with a rolling groove. A first ball is rolled in the rolling groove, and part of the first ball is located outside the outer sleeve and rollingly contacting the sliding plate.

[0007] Furthermore, a number of second balls are also circulated within the rolling groove, located between its inner top surface and the first ball.

[0008] Furthermore, the limiting post includes a first connecting section that is threadedly connected to the outer sleeve, and the spring abuts against the first connecting section.

[0009] Furthermore, the limiting post also includes a second connecting section that is threadedly connected to the outer sleeve, and the end face of the first connecting section opposite to the spring is recessed with an abutment hole, and the second connecting section also abuts against the abutment hole.

[0010] Furthermore, a threaded connecting sleeve is fixedly connected to one end of the outer sleeve, and a threaded hole is provided on the pressure block that is threaded to engage with the threaded connecting sleeve.

[0011] Furthermore, the pressure block, guide pad, and housing are connected by connectors.

[0012] According to an embodiment, a conveying device including the above-described planar sealing structure is also provided.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The sliding plate is pressed together by the cooperation of the elastic abutment and the rolling element. When the sliding plate is displaced, the rolling element rolls adaptively and maintains the pressing state against the sliding plate, so that it is not necessary to pay attention to whether the sliding plate is pressed tightly at all times, thus solving the problem of needing to pay attention to whether the sliding plate is pressed tightly in the prior art. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ; Figure 2 for Figure 1 Enlarged schematic diagram of a local structure at point A; Figure 3 for Figure 2 Enlarged schematic diagram of the local structure at point B; In the above attached figures: 1. Housing; 2. Waist-shaped slot; 3. Drive shaft; 4. Mounting base; 5. Drive wheel; 6. Guide pad; 7. Sliding plate; 8. Flat seal; 9. Connector; 10. Pressure block; 11. First connecting section; 12. Second connecting section; 13. Outer sleeve; 14. Threaded connecting sleeve; 15. Limiting post; 16. Spring; 17. Guide post; 18. First ball bearing; 19. Second ball bearing. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-3 As shown, this embodiment provides a conveying device including a planar sealing structure. The planar sealing structure, similar to that in the prior art, includes a housing 1 (i.e., the housing 1 of the conveying device). A waist-shaped slot 2 is provided on the housing 1. It also includes a drive shaft 3, which passes through the waist-shaped slot 2 and can move laterally within it. It further includes a mounting base 4 fixed outside the housing 1 for mounting the drive shaft 3, and a drive wheel 5 located inside the housing 1 and fixed to the drive shaft 3. A pair of guide pads 6 are fixed outside the two ends of the waist-shaped slot 2 on the outside of the housing 1. A sliding plate 7, sleeved on the drive shaft 3, is also provided between the two guide pads 6. A planar seal 8 is also provided between the sliding plate 7 and the housing 1. The planar seal 8, similar to that in the prior art, can be a rubber layer or a felt layer. Further, the pressure block 10, guide pads 6, and housing... The two guide blocks 6 are connected by a connector 9, which can be a hexagonal bolt as in the prior art. Two pressure blocks 10 are also pressed onto the two guide blocks 6, and the two pressure blocks 10 partially cover the sliding plate 7. Unlike the prior art, in this solution, the two pressure blocks 10 are also provided with elastic abutting members that elastically abut against the sliding plate 7. Furthermore, a rolling element is provided between the elastic abutting member and the sliding plate 7. Specifically, there is a gap between the pressure block 10 and the sliding plate 7, and the rolling element abuts against the sliding plate 7 at this gap. The sliding plate 7 is pressed tightly by the cooperation of the elastic abutting member and the rolling element. When the sliding plate 7 is displaced, the rolling element adapts and rolls to maintain the pressed state against the sliding plate 7, thus eliminating the need to constantly monitor whether the sliding plate 7 is pressed tightly. Therefore, this solves the problem in the prior art where it is necessary to constantly monitor whether the sliding plate 7 is pressed tightly.

[0017] like Figure 1-3As shown, in a further embodiment, the elastic abutment includes an outer sleeve 13 threadedly connected to the pressure block 10, wherein one end of the outer sleeve 13 is fixedly connected to a threaded connecting sleeve 14, and the pressure block 10 is provided with a threaded hole that threadedly engages with the threaded connecting sleeve 14, thus allowing the outer sleeve 13 to be detachably mounted on the pressure block 10; furthermore, the elastic abutment also includes a limiting post 15 threadedly connected to one end of the outer sleeve 13, and a spring 16 located inside the outer sleeve 13 and abutting against the limiting post 15, and a rolling element including an end located inside the outer sleeve 13 and abutting against the spring 16 away from the limiting post 15. The guide post 17 slides in contact with the inner wall of the outer sleeve 13 (i.e., the guide post 17 slides in contact with the inner wall of the threaded connecting sleeve 14). The end of the guide post 17 away from the spring 16 is recessed with a rolling groove. The first ball 18 is rolled in the rolling groove, and part of the first ball 18 is located outside the outer sleeve 13 and rolls in contact with the sliding plate 7. That is, the rolling of the rolling element is achieved by the first ball 18 in the rolling groove. The spring 16 can provide elastic clamping force so that the first ball 18 presses the sliding plate 7 downward. When the sliding plate 7 moves, it can adapt by rolling.

[0018] like Figure 1-3 As shown, in a further embodiment, a number of second balls 19 are also rolled within the rolling groove, located between its inner top surface and the first ball 18. Specifically, the rolling groove and the first ball 18 are engaged again by the rolling of the second balls 19, which allows the first ball 18 to have greater rolling freedom and roll more smoothly.

[0019] like Figure 1-3 As shown in the more detailed scheme, the limiting post 15 in this scheme adopts a two-section structure, including a first connecting section 11 and a second connecting section 12. Specifically, both the first connecting section 11 and the second connecting section 12 are threaded into the outer sleeve 13. The first connecting section 11 is first screwed into the outer sleeve 13 and abuts against the spring 16. The end face of the first connecting section 11 facing away from the spring 16 is recessed and has an abutment hole. The second connecting section 12 is then screwed into the outer sleeve 13 and also abuts against the abutment hole. The first connecting section 11 can pre-adjust the tension of the spring 16, and then the second connecting section 12 is used for final position locking.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A planar sealing structure, characterized in that, The device includes a housing and a drive shaft that passes through the housing. The housing is also provided with an oblong slot for the drive shaft to move laterally. A pair of guide pads are fixed on the outside of the housing and located outside the two ends of the oblong slot. A sliding plate is also provided between the two guide pads and fitted outside the drive shaft. A flat seal is also provided between the sliding plate and the housing. Pressure blocks are also pressed on the two guide pads, and the two pressure blocks partially cover the sliding plate. An elastic abutment is also provided on the two pressure blocks and elastically abuts against the sliding plate. A rolling element is also provided between the elastic abutment and the sliding plate.

2. The planar sealing structure as described in claim 1, characterized in that, The elastic abutment includes an outer sleeve connected to the pressure block, a limiting post threaded to one end of the outer sleeve, and a spring located inside the outer sleeve and abutting against the limiting post. The rolling element includes a guide post located inside the outer sleeve and abutting against the end of the spring away from the limiting post and slidingly contacting the inner wall of the outer sleeve. The end of the guide post away from the spring is recessed and provided with a rolling groove. A first ball is rolled in the rolling groove, and part of the first ball is located outside the outer sleeve and rollingly contacting the sliding plate.

3. The planar sealing structure as described in claim 2, characterized in that, The rolling groove also contains a number of second balls located between its inner top surface and the first ball.

4. The planar sealing structure as described in claim 2, characterized in that, The limiting post includes a first connecting section that is threadedly connected to the outer sleeve, and a spring abuts against the first connecting section.

5. The planar sealing structure as described in claim 4, characterized in that, The limiting post also includes a second connecting section that is threadedly connected to the outer sleeve, and the first connecting section is recessed at the end face away from the spring and has an abutment hole, and the second connecting section also abuts against the abutment hole.

6. The planar sealing structure as described in claim 2, characterized in that, A threaded connecting sleeve is fixedly connected to one end of the outer sleeve, and a threaded hole is provided on the pressure block that is threaded to engage with the threaded connecting sleeve.

7. The planar sealing structure as described in any one of claims 1-6, characterized in that, The pressure block, guide pad, and housing are connected by connectors.

8. A conveying device, characterized in that, Includes the planar sealing structure as described in any one of claims 1-7.

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