Material conveying shaft sleeve sealing device of integrated automatic subpackaging system

Abstract

The utility model discloses an integrated material conveying shaft sleeve sealing device of an automatic split charging system, which comprises a shaft sleeve body and is characterized in that the shaft sleeve body is provided with a through hole matched with a driving shaft section of a spiral reamer, and a front sealing seat and a rear sealing seat are respectively arranged at two ends of the outer diameter of the shaft sleeve body. A first mounting seat is arranged on the middle section of the outer diameter of the shaft sleeve body close to the front sealing seat, and a second mounting seat is arranged on the middle section close to the rear sealing seat; a front air inlet hole is formed between the first mounting seat and the front sealing seat, and a rear air inlet hole is formed in the second mounting seat; and a gap is formed between a front end inner hole, matched with the driving shaft section of the spiral reamer, of the shaft sleeve body and the driving shaft. Product quality pollution caused by component falling is avoided, the possibility that materials enter the space between the sealing device and the shaft is prevented, assembling and disassembling are convenient, and the service life is prolonged; the sealing air pressure can be adjusted at will according to actual requirements.

Description

Technical Field

[0001] The utility model relates to a material conveying equipment technology, in particular to an integrated automatic subpackaging system material conveying shaft sleeve sealing device. Background Art

[0002] In the material conveying device of the automatic packaging system, one end of the spiral reamer is connected to the driving mechanism through the driving shaft section. The driving mechanism and the spiral reamer must be sealed to prevent the material from penetrating into the driving shaft section connection (between the sealing device and the shaft) and causing damage to the bearing and other components and equipment. The conventional sealing method is generally to set multiple sealing points directly on the driving shaft section. Due to the particularity of the equipment, the driving shaft section needs to contact multiple equipment components at the same time, and the length of the seal is relatively long. In the prior art, a split multi-sealing component is basically used to facilitate processing and installation. These multi-component structures will cause cumbersome assembly, and the sealing structure is relatively complex. The front retaining ring at one end of the spiral reamer material bin is easy to wear and fall off, and there is a risk of contaminating the product quality. Moreover, even if the air pressure seal is adopted for this multi-component structure, the sealing air pressure cannot be too large or adjusted. During the long-term operation process, if the atmospheric pressure is adjusted, there is a phenomenon of blowing out the front retaining ring, causing the retaining ring to be stuck on the screw conveyor and damaged, resulting in the locking of the conveying shaft. This maintenance and disassembly is quite complicated, which brings inconvenience to research and development and production. Summary of the invention

[0003] The purpose of the utility model is to solve the above problems and provide an integrated automatic filling system material conveying shaft sleeve sealing device, which has the characteristics of simple structure, convenient assembly and disassembly, and is conducive to equipment maintenance and overhaul. The sealing air pressure can be adjusted arbitrarily according to actual needs, and the pressure difference generated by the movement of gas and material can be reasonably used to prevent the possibility of material entering between the sealing device and the shaft.

[0004] The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: an integrated automatic packaging system material conveying sleeve sealing device, including a sleeve body, characterized in that the sleeve body has a through hole that cooperates with the spiral reamer drive shaft section, and a front sealing seat and a rear sealing seat are respectively provided at both ends of the outer diameter of the sleeve body, a first mounting seat is provided near the front sealing seat on the middle section of the outer diameter of the sleeve body, and a second mounting seat is provided near the rear sealing seat; a front air intake hole is provided between the first mounting seat and the front sealing seat, and a rear air intake hole is provided on the second mounting seat; a gap is provided between the front end inner hole of the sleeve body that cooperates with the spiral reamer drive shaft section and the drive shaft.

[0005] In the aforementioned integrated automatic packaging system material conveying sleeve sealing device, preferably, both ends of the inner hole of the sleeve body are provided with reduced diameter parts, and the front air inlet and the rear air inlet are connected through the air-tight space formed between the reduced diameter parts at both ends.

[0006] In the aforementioned integrated automatic packaging system material conveying sleeve sealing device, preferably, a gap of 0.1 to 0.2 mm is provided between the front end inner bore reduction portion of the sleeve body and the spiral reamer drive shaft section and the drive shaft.

[0007] In the aforementioned integrated automatic packaging system material conveying sleeve sealing device, preferably, the sleeve body and the rear end inner hole reduction portion of the spiral reamer drive shaft section are matched with the drive shaft in a clearance fit or a transition fit.

[0008] In the aforementioned integrated automatic filling system material conveying sleeve sealing device, preferably, an axial groove is provided between the first mounting seat and the front sealing seat, and the front air intake hole is arranged in the groove area.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: by integrating the existing multiple sealing components into an integrated design, the defects of separation, cumbersome assembly, complex sealing structure, and fragility caused by multiple components are eliminated, and the risk of contaminating product quality due to wear and falling of the front retaining ring is avoided; the pressure difference generated by the movement of gas and material can be better utilized, and the possibility of material entering between the sealing device and the shaft is effectively prevented; the structure is simple, and the assembly and disassembly are convenient, which is convenient for the maintenance and repair of the equipment, and greatly saves the use cost and extends the service life of the equipment; the sealing air pressure can be adjusted arbitrarily according to actual needs during use, so as to meet the sealing requirements and achieve better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the utility model in use state.

[0012] In the figure: 10-sleeve body, 101-first mounting seat, 102-second mounting seat, 103-front sealing seat, 104-rear sealing seat, 105-front air inlet hole, 106-rear air inlet hole, 107-reducing part, 20-spiral reamer, 30-reducer. DETAILED DESCRIPTION

[0013] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0014] This embodiment is an integrated automatic packaging system material conveying sleeve sealing device, such as Figure 1 , Figure 2As shown, the main body is a sleeve body 10, and the sleeve body 10 has a through hole, i.e., a center hole, which cooperates with the drive shaft section of the spiral reamer 20. A front sealing seat 103 and a rear sealing seat 104 are respectively provided at both ends of the outer diameter of the sleeve body 10. A first mounting seat 101 is provided near the front sealing seat 103 on the middle section of the outer diameter of the sleeve body 10, and a second mounting seat 102 is provided near the rear sealing seat 104. The drive shaft section of the spiral reamer 20 passes through the sleeve body 10 and is connected to the reducer 30.

[0015] A front air intake hole 105 is provided between the first mounting seat 101 and the front sealing seat 103 . Specifically, an axial groove is provided between the first mounting seat 101 and the front sealing seat 103 on the outer cylindrical surface of the sleeve body 10 . The front air intake hole 105 is arranged in the groove area; the rear air intake hole 106 is directly arranged on the second mounting seat 102 .

[0016] There is a gap between the front end inner hole of the sleeve body 10 and the drive shaft section of the spiral reamer 20 and the drive shaft. Specifically, the two ends of the inner hole of the sleeve body 10 are respectively provided with a reduced diameter portion 107, and the front air intake hole 105 and the rear air intake hole 106 are connected through the air-tight space formed between the reduced diameter portions 107 at both ends. The gap size between the front end inner hole reduced diameter portion 107 of the sleeve body 10 and the drive shaft section of the spiral reamer 20 and the drive shaft is selected to be 0.1 to 0.2 mm. The rear end inner hole reduced diameter portion of the sleeve body 10 and the drive shaft section of the spiral reamer 20 is selected to be a clearance match.

[0017] Working principle and application: The diameters of the first mounting seat 101 and the second mounting seat 102 in the cylindrical outer surface of the sleeve body 10 are equal; the diameters of the front sealing seat 103 and the rear sealing seat 104 are equal, and the same O-rings are installed to ensure the sealing between the sleeve body 10 and the mounting part where the sub-packaging system is located. An airtight space is formed between the center hole in the sleeve body 10 and the reduced diameter parts 107 at both ends. When the gas is pressed into the airtight space from the front air inlet 105 and the rear air inlet 106, since there is a gap between the front inner hole reduced diameter part 107 and the drive shaft, the gas in the airtight space is blown out from this gap first, thereby preventing the material from penetrating into the sealing device. In actual application, the sealing air pressure can be adjusted arbitrarily according to the specific conditions of the use process to achieve the best sealing effect.

[0018] The above embodiments are for the purpose of explaining the present invention, but not for limiting the present invention. Any structure that is simply modified by ordinary technicians in this field without departing from the principle of the present technical solution and without creative work shall fall within the protection scope of the present invention.

Claims

1. An integrated automatic dispensing system material conveying sleeve sealing device, comprising a sleeve body (10), characterized in that The sleeve body has a through hole that cooperates with the drive shaft section of the spiral reamer (20); a front sealing seat (103) and a rear sealing seat (104) are respectively provided at both ends of the outer diameter of the sleeve body; a first mounting seat (101) is provided near the front sealing seat on the middle section of the outer diameter of the sleeve body, and a second mounting seat (102) is provided near the rear sealing seat; a front air intake hole (105) is provided between the first mounting seat and the front sealing seat, and a rear air intake hole (106) is provided on the second mounting seat; and a gap is provided between the front end inner hole of the sleeve body that cooperates with the drive shaft section of the spiral reamer and the drive shaft.

2. The integrated automatic dispensing system material conveying sleeve sealing device according to claim 1 is characterized in that: The two ends of the inner hole of the shaft sleeve body (10) are respectively provided with reduced diameter portions (107), and the front air intake hole (105) and the rear air intake hole (106) are communicated through an airtight space formed between the reduced diameter portions at the two ends.

3. The integrated automatic dispensing system material conveying sleeve sealing device according to claim 2 is characterized in that: A clearance of 0.1 to 0.2 mm is provided between the front end inner hole reduction portion (107) of the sleeve body (10) and the drive shaft section of the spiral reamer (20) and the drive shaft.

4. The integrated material conveying sleeve sealing device of the automatic dispensing system according to claim 2 or 3 is characterized in that: The shaft sleeve body (10) and the spiral reamer (20) drive shaft section cooperate with each other, and a clearance fit or a transition fit is formed between the rear end inner hole reduction portion and the drive shaft.

5. The integrated material conveying sleeve sealing device of the automatic dispensing system according to claim 1 is characterized in that: An axial recessed groove is provided between the first mounting seat (101) and the front sealing seat (103), and the front air intake hole (105) is arranged in the recessed groove area.

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