Novel dustproof seal of screw conveyor speed reducer

Abstract

The utility model discloses a novel dustproof seal of a screw conveyer speed reducer, which comprises a seal base, the seal base comprises a seal upper seat and a seal lower seat, the seal upper seat and the seal lower seat are both internally provided with channels for an output shaft to pass through, and the seal base is internally provided with an upper floating seal ring and a lower floating seal ring. The upper floating ring pressing ring and the lower floating ring pressing ring respectively extrude the upper floating sealing ring and the lower floating sealing ring in a sealing mode to enable the upper floating sealing ring and the lower floating sealing ring to be sealed, the sealing upper seat and the output shaft are tightly jacked through two M8 jackscrews to be tightly matched, the output shaft rotates to drive the sealing upper seat to rotate together, the upper floating sealing ring and the lower floating sealing ring have enough pressure, and the sealing effect is good. The upper floating sealing ring and the lower floating sealing ring play a role in sealing and preventing materials from leaking under the pressure of the upper floating ring pressing ring and the lower floating ring pressing ring respectively, the sealing rubber ring plays a role in sealing lubricating oil and tightly holding the input shaft, the input shaft is prevented from swinging, and the output shaft end of the speed reducer can be well sealed in a dustproof mode.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyor reducers, in particular to a novel dustproof seal for a screw conveyor reducer. Background Art

[0002] A screw conveyor is a conveying device for conveying powder or solid particles. Its output shaft extends into the conveying barrel and is connected to the spiral shaft. The powder can leak through the gap between the shaft and the shell. Therefore, a dust-proof seal for the output shaft end of the reducer is very necessary.

[0003] Most of the existing measures are to achieve sealing by using the contact between the felt ring and the rotating shaft. However, the felt ring and the rotating shaft are squeezed and worn for a long time to produce a gap, which reduces the sealing performance and needs to be replaced in time. The problem of old seal leakage has plagued the screw conveyor industry for many years. The utility model mainly solves the problem that the old felt seal is prone to wear and leakage. Therefore, we need to propose a new dust-proof seal for the screw conveyor reducer. Summary of the invention

[0004] The purpose of the utility model is to provide a new type of dustproof seal for a screw conveyor reducer. The upper floating sealing ring and the lower floating sealing ring respectively play a role in sealing and preventing material leakage under the pressure of the upper floating ring pressure ring and the lower floating pressure ring, and can perform dustproof sealing on the output shaft end of the reducer well to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A new type of dustproof seal for a screw conveyor reducer comprises a sealing base, wherein the sealing base comprises a sealing upper base and a sealing lower base, wherein the interiors of the sealing upper base and the sealing lower base are respectively provided with a first channel and a second channel for an output shaft and an input shaft to pass through, wherein an upper floating sealing ring and a lower floating sealing ring are arranged inside the sealing base, and an upper floating ring pressure ring and a lower floating ring pressure ring are respectively arranged on the outer walls of the upper floating sealing ring and the lower floating sealing ring.

[0007] Preferably, an annular mounting groove is provided on the inner wall of the sealing lower seat, and a sealing rubber ring is provided inside the annular mounting groove.

[0008] Preferably, a lubricating oil filling port is provided on the sealing lower seat, and the lubricating oil filling port is connected to the second channel.

[0009] Preferably, the lubricating oil filling port is arranged obliquely, and one end of the lubricating oil filling port close to the second channel is located on one side of the sealing rubber ring.

[0010] Preferably, the upper floating sealing ring and the lower floating sealing ring are symmetrically arranged, and the outer walls of the upper floating sealing ring and the lower floating sealing ring are both arranged in an inclined cone shape.

[0011] Preferably, two groups of fastening grooves are symmetrically provided on the sealing upper seat, both groups of fastening grooves are connected to the first channel, and top screws are arranged inside the two groups of fastening grooves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model is used, the upper floating sealing ring and the lower floating sealing ring are respectively squeezed by the upper floating ring pressure ring and the lower floating ring pressure ring to make them sealed, and two M8 top screws are used to tighten the sealing upper seat and the output shaft to make them tightly fit, so that the rotation of the output shaft can drive the sealing upper seat to rotate together, the upper floating sealing ring and the lower floating sealing ring have enough pressure, and the upper floating sealing ring and the lower floating sealing ring respectively play the role of sealing and preventing material leakage under the pressure of the upper floating ring pressure ring and the lower floating ring pressure ring, and the function of the sealing rubber ring is to seal the lubricating oil and hold the input shaft to prevent the input shaft from swinging, and can well perform dust-proof sealing on the output shaft end of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0017] In the figure: 1. Sealing base; 101. Sealing upper seat; 102. Sealing lower seat; 2. First channel; 3. Second channel; 4. Upper floating sealing ring; 5. Lower floating sealing ring; 6. Upper floating ring pressure ring; 7. Lower floating ring pressure ring; 8. Sealing rubber ring; 9. Lubricating oil filling port; 10. Top screw. 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 , the utility model provides a technical solution:

[0020] A novel dustproof seal for a screw conveyor reducer comprises a sealing base 1, wherein the sealing base 1 comprises a sealing upper base 101 and a sealing lower base 102, wherein the interior of the sealing upper base 101 and the sealing lower base 102 are respectively provided with a first channel 2 and a second channel 3 for an output shaft and an input shaft to pass through, and the first channel 2 and the second channel 3 have the same diameter, and are used to connect the output shaft and the input shaft together, wherein an upper floating sealing ring 4 and a lower floating sealing ring 5 are arranged inside the sealing base 1, and an upper floating ring pressure ring 6 and a lower floating ring pressure ring 7 are respectively arranged on the outer walls of the upper floating sealing ring 4 and the lower floating sealing ring 5, wherein the upper floating sealing ring 4 and the lower floating sealing ring 5 have sufficient pressure, and the upper floating sealing ring 4 and the lower floating sealing ring 5 play a role of sealing and preventing leakage of materials under the pressure of the upper floating ring pressure ring 6 and the lower floating ring pressure ring 7 respectively;

[0021] An annular mounting groove is provided on the inner wall of the sealing lower seat 102, and a sealing rubber ring 8 is provided inside the annular mounting groove. The function of the sealing rubber ring 8 is to seal the lubricating oil and hold the input shaft tightly to prevent the input shaft from swinging;

[0022] The sealing lower seat 102 is provided with a lubricating oil filling port 9, which is connected to the second passage 3. By filling lubricating oil into the lubricating oil filling port 9, the lubricating oil enters the interior of the second passage 3 to ensure lubrication of the input shaft.

[0023] The lubricating oil filling port 9 is arranged at an angle, and one end of the lubricating oil filling port 9 close to the second channel 3 is located on one side of the sealing rubber ring 8. Compared with the whole device, the sealing rubber ring 8 is located on the outside of the discharge port of the lubricating oil filling port 9, so that when the lubricating oil enters the second channel 3, the sealing rubber ring 8 can seal the lubricating oil to avoid leakage of the lubricating oil;

[0024] The upper floating sealing ring 4 and the lower floating sealing ring 5 are symmetrically arranged, and the outer walls of the upper floating sealing ring 4 and the lower floating sealing ring 5 are arranged in an inclined cone shape. It is worth noting that since the outer walls of the upper floating sealing ring 4 and the lower floating sealing ring 5 are arranged in an inclined cone shape, it can be known that the radii of the upper floating sealing ring 4 and the lower floating sealing ring 5 are different. The upper floating ring pressure ring 6 and the lower floating ring pressure ring 7 are both sleeved at the smallest radius of the upper floating sealing ring 4 and the lower floating sealing ring 5, which can better seal the upper floating sealing ring 4 and the lower floating sealing ring 5;

[0025] Two sets of fastening grooves are symmetrically provided on the sealing upper seat 101, both sets of fastening grooves are connected to the first channel 2, and both sets of fastening grooves are provided with top screws 10 inside. The sealing upper seat 101 and the output shaft are tightly matched and tightened with two M8 top screws 10 so that the rotation of the output shaft can drive the sealing upper seat to rotate together.

[0026] Working principle: When the utility model is used, the upper floating sealing ring 4 and the lower floating sealing ring 5 are squeezed respectively through the upper floating ring pressure ring 6 and the lower floating ring pressure ring 7 to make them sealed, and two M8 top screws 10 are used to tighten the sealing upper seat 101 and the output shaft to make them tightly fit, so that the rotation of the output shaft will drive the sealing upper seat 101 to rotate together, and the upper floating sealing ring 4 and the lower floating sealing ring 5 have enough pressure. The upper floating sealing ring 4 and the lower floating sealing ring 5 respectively play a role of sealing and preventing material leakage under the pressure of the upper floating ring pressure ring 6 and the lower floating ring pressure ring 7. The function of the sealing rubber ring 8 is to seal the lubricating oil and hold the input shaft to prevent the input shaft from swinging, and can perform dust-proof sealing on the output shaft end of the reducer.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel dustproof seal for a screw conveyor reducer, comprising a sealing base (1), characterized in that: The sealing base (1) comprises an upper sealing base (101) and a lower sealing base (102), wherein the upper sealing base (101) and the lower sealing base (102) are respectively provided with a first passage (2) and a second passage (3) for the output shaft and the input shaft to pass through, respectively, and an upper floating sealing ring (4) and a lower floating sealing ring (5) are provided inside the sealing base (1), and an upper floating ring pressure ring (6) and a lower floating ring pressure ring (7) are respectively provided on the outer walls of the upper floating sealing ring (4) and the lower floating sealing ring (5).

2. The novel dustproof seal for a screw conveyor reducer according to claim 1 is characterized in that: An annular mounting groove is provided on the inner wall of the sealing lower seat (102), and a sealing rubber ring (8) is provided inside the annular mounting groove.

3. The novel dustproof seal for a screw conveyor reducer according to claim 1 is characterized in that: The sealing lower seat (102) is provided with a lubricating oil filling port (9), and the lubricating oil filling port (9) is connected to the second channel (3).

4. The novel dustproof seal for a screw conveyor reducer according to claim 3 is characterized in that: The lubricating oil filling port (9) is arranged at an angle, and one end of the lubricating oil filling port (9) close to the second channel (3) is located on one side of the sealing rubber ring (8).

5. The novel dustproof seal for a screw conveyor reducer according to claim 1 is characterized in that: The upper floating sealing ring (4) and the lower floating sealing ring (5) are symmetrically arranged, and the outer walls of the upper floating sealing ring (4) and the lower floating sealing ring (5) are both arranged in an inclined cone shape.

6. The novel dustproof seal for a screw conveyor reducer according to claim 1 is characterized in that: The sealing upper seat (101) is symmetrically provided with two groups of fastening grooves, both groups of fastening grooves are connected to the first channel (2), and top screws (10) are arranged inside the two groups of fastening grooves.

Images