Electric heating type rotary kiln sealing device

Abstract

The utility model discloses an electric heating type rotary kiln sealing device which comprises a suction pipe, a rotary kiln body, a sealing device and an electric heating device, and the suction pipe is located at one end of the rotary kiln body; a flange synchronously connected with the rotary kiln body is fixed to one end of the transmission sealing head, an elastic sealing part is fixed to the other end of the transmission sealing head, the elastic sealing part is connected to the outer side wall of the suction pipe in a dynamic sealing mode, the feeding pipe is fixedly connected to the suction pipe in an inclined mode, and the feeding pipe is connected to the outer side wall of the suction pipe in an inclined mode. The rotary kiln provided by the utility model has the advantages that the structure is simple, the sealing effect is good, and external gas impurities are effectively prevented from entering the furnace to influence the atmosphere in the furnace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotary kiln technical field, concretely relates to a kind of electric heating rotary kiln sealing device. BACKGROUND

[0002] In related art, kiln head or kiln tail of rotary kiln mostly uses packing seal or packing seal combined with labyrinth seal to seal it, to prevent dust and gas in kiln from leaking. However, due to the influence of manufacturing, installation error and kiln temperature, rotary kiln will appear axial movement and radial runout phenomenon during rotation, which leads to rotary kiln to appear eccentric and eccentric conditions, so that the sealing effect is poor, there is the condition of powder leakage, gas leakage and the condition of external gas impurities entering the furnace to affect the atmosphere in the furnace.

[0003] Therefore, how to provide a kind of electric heating rotary kiln sealing device with good sealing performance and strong flexibility is a problem to be solved by the person skilled in the art. INVENTION CONTENTS

[0004] Therefore, the utility model provides a kind of electric heating rotary kiln sealing device, and the sealing effect is good, not easy to leak, and flexible to use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of electric heating rotary kiln sealing device, it includes:

[0006] Suction pipe, the suction pipe is located in one end of rotary kiln body end portion;

[0007] Transmission sealing head, one end of the transmission sealing head is fixed with the flange synchronously connected with the rotary kiln body, the other end of the transmission sealing head is fixed with the elastic sealing part, and the elastic sealing part is dynamically sealed on the outer side wall of the suction pipe;

[0008] Feed pipe, the feed pipe is fixedly connected on the suction pipe, and the discharge end of the feed pipe penetrates the suction pipe and extends into the rotary kiln body.

[0009] The utility model has the advantages that: the setting purpose of suction pipe is to generate negative pressure environment, for suctioning selenium dioxide and sulfur dioxide gas generated by roasting in kiln, transmission sealing head is used to transmit external power to make rotary kiln body rotate, and the elastic sealing part on transmission sealing head can elastically seal suction pipe, to ensure the sealing effect of joint, and there is a certain elastic allowance range in radial or axial direction, to avoid gas leakage between suction pipe and elastic sealing part during rotation caused by manufacturing or assembly error, and feed pipe can directly feed material into rotary kiln body, to ensure feeding.

[0010] Preferably, the elastic sealing part comprises a baffle, a ring, an end cover and an oil packing, the baffle and the end cover are annular, the baffle is fixed at the other end of the transmission sealing head, the baffle and the end cover are arranged in parallel and spaced, and the ring is fixed between the baffle and the end cover, an annular groove for accommodating the oil packing is formed on the inner side of the ring matched with the baffle and the end cover, and the outer side wall of the suction pipe elastically abuts against the inner side wall of the oil packing.

[0011] The technical effect produced thereby is that the baffle and the end cover play a role in positioning the oil packing, ensuring that the oil packing is installed at a position of the elastic sealing part, while avoiding the oil packing from entering the inside of the kiln body, the elastic abutment of the oil packing against the outer side wall of the suction pipe has a certain elastic allowance, thereby ensuring the sealing effect between the components.

[0012] Preferably, the size of the outer side wall of the suction pipe is smaller than the size of the inner side wall of the baffle and the end cover.

[0013] The technical effect produced thereby is that there is a certain size allowance between the inner side walls of the baffle and the end cover and the outer side wall of the suction pipe, thereby ensuring that the rotary kiln body can rotate smoothly relative to the suction pipe, thereby reducing the influence caused by assembly or manufacturing errors.

[0014] Preferably, one end of the suction pipe extends into the transmission sealing head and is a certain distance away from the baffle.

[0015] The technical effect produced thereby is that the suction pipe needs to be installed in place to avoid the suction pipe from being unsheathed from the transmission sealing head.

[0016] Preferably, the distance d between one end of the suction pipe and the baffle is 40-50 mm.

[0017] The technical effect produced thereby is that the suction pipe needs to extend into the transmission sealing head by a certain distance, and too short an extension length will affect the connection reliability and stability of the sealing position, and too long an extension length will cause the right end face of the suction pipe to be directly in contact with the material and be corroded.

[0018] Preferably, a suction port is arranged on the side wall of the suction pipe, a slanted pipe sleeve is connected and communicated with the other end of the suction pipe, a positioning flange is arranged on the outer side wall of the feeding pipe, and the discharge end of the feeding pipe extends into the slanted pipe sleeve and passes through the suction pipe into the rotary kiln body, and the positioning flange is fixedly connected with the end flange of the slanted pipe sleeve.

[0019] The technical effect produced thereby is that the other end of the suction pipe is provided with the slanted pipe sleeve for receiving the feeding pipe, and the feeding pipe is relatively fixed with the suction pipe through the positioning flange. It needs to be noted that, in specific implementation, a support frame connected to an external base is arranged on the suction pipe or the feeding pipe to prevent the suction pipe from rotating with the rotary kiln body.

[0020] Preferably, the transmission sealing head is an annular structure, and a transmission gear ring is fixed to the outside of the transmission sealing head, the transmission gear ring is in transmission connection with an external power source and drives the transmission sealing head and the rotary kiln body to rotate.

[0021] The technical effect generated thereby is that the transmission sealing head is in transmission connection with the external power source through the transmission gear ring, the external power source includes but is not limited to a motor, a hydraulic motor and the like, and a driving gear is necessary to cooperate with the transmission gear ring.

[0022] Preferably, a connecting disc is fixed to the outer sidewall of the rotary kiln body, the connecting disc is fixedly connected with the flange, and the outer sidewall of the connecting disc is rotatably matched with an external support roller set.

[0023] The technical effect generated thereby is that the rotary kiln body is better supported in rolling through the rotary cooperation of the support roller set and the connecting disc, and the connecting disc is also the basis for connecting the rotary kiln body and the transmission sealing head. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural diagram of the electric heating type rotary kiln sealing device of the utility model;

[0025] Figure 2 It is a partial enlarged view of the electric heating type rotary kiln sealing device of the utility model;

[0026] Figure 3 It is Figure 2 A-A sectional view in the electric heating type rotary kiln sealing device of the utility model;

[0027] Figure 4 It is a structural diagram of the transmission sealing head of the electric heating type rotary kiln sealing device of the utility model.

[0028] 1 suction pipe, 11 suction port, 12 inclined pipe sleeve, 2 rotary kiln body, 21 connecting disc, 3 transmission sealing head, 31 elastic sealing part, 311 baffle, 312 ring sleeve, 313 end cover, 314 oil packing, 32 transmission gear ring, 33 flange, 4 feeding pipe, 41 discharging end, 42 positioning flange, 5 power source, 6 support roller set. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Reference is made to the drawings of the utility model Figures 1 to 4According to the electric heating type rotary kiln sealing device, the rotary kiln body is connected with the driving sealing head through the flange, the driving sealing head is connected with the elastic sealing part, and the elastic sealing part is connected with the outer side wall of the suction pipe.

[0031] Suction pipe 1, suction pipe 1 is located at one end of the rotary kiln body 2, it should be noted that, in specific implementation, the suction pipe 1 has a support frame connected with the external foundation, so as to determine the installation position thereof;

[0032] Driving sealing head 3, one end of the driving sealing head 3 is fixed with a flange 33 connected with the rotary kiln body 2, and the other end of the driving sealing head 3 is fixed with an elastic sealing part 31, and the elastic sealing part 31 is connected with the outer side wall of the suction pipe 1.

[0033] Feeding pipe 4, the feeding pipe 4 is fixedly connected to the suction pipe 1 in an inclined manner, the discharge end 41 of the feeding pipe 4 penetrates through the suction pipe 1 and extends into the rotary kiln body 2, and it should be noted that the discharge end 41 extends into the rotary kiln body 2 and does not contact the inner wall of the rotary kiln body 2, so as to avoid corrosion of the feeding pipe 4 caused by contact between the feeding pipe 4 and the material.

[0034] The material of the feeding pipe 4 is 316 stainless steel, and the caliber is 30 mm.

[0035] In other embodiments, the elastic sealing part 31 comprises a baffle 311, a ring sleeve 312, an end cover 313 and an oily packing 314, the baffle 311 and the end cover 313 are annular, the baffle 311 is fixed at the other end of the driving sealing head 3, the baffle 311 and the end cover 313 are arranged in parallel and are spaced apart, and the ring sleeve 312 is fixed between the baffle 311 and the end cover 313, the inner side of the ring sleeve 312 is matched with the baffle 311 and the end cover 313 to form an annular groove for accommodating the oily packing 314, and the outer side wall of the suction pipe 1 is in elastic abutment with the inner side wall of the oily packing 314. The oily packing 314 is mainly composed of high-quality graphite fiber and lubricating oil, and has a certain elasticity, and the diameter thereof is 20 mm.

[0036] The end cover 313 and the baffle 311 are formed by 316 stainless steel, the distance between the end cover 313 and the baffle 311 is 18 mm, the end cover 313 is bolted to the end flange of the ring sleeve, the inner diameter of the end cover 313 is 60 mm, the outer diameter is 120 mm, and the thickness is 15 mm.

[0037] In other specific embodiments, the size of the outer side wall of the suction pipe 1 is smaller than the size of the inner side wall of the baffle 311 and the end cover 313, and the inner diameter of the ring sleeve 312 needs to be greater than the inner diameter of the baffle 311 and the end cover 313, so as to form the annular groove for accommodating the oily packing 314. The outer diameter of the suction pipe is 58 mm, and the inner diameter is 50 mm; the inner diameter of the baffle is 62 mm, and the baffle 311 and the end cover 313 are used for positioning the oily packing 314.

[0038] In some other embodiments, one end of the suction pipe 1 extends into the transmission sealing head 3 and is a certain distance away from the baffle 311, specifically, the distance d between the one end of the suction pipe 1 and the baffle 311 is 40-50 mm. The length of the position refers to the length of the suction pipe beyond the sealing position (baffle), too short will affect the connection reliability and stability of the sealing position, too long will make the right end face of the suction pipe directly contact the material and be corroded, therefore, the range interval of 40-50 mm is limited.

[0039] In some other specific embodiments, the suction pipe 1 is provided with a suction port 11 on the side wall, the other end of the suction pipe 1 is connected and communicated with a inclined pipe sleeve 12, the outer side wall of the feeding pipe 4 is provided with a positioning flange 42, the discharging end 41 of the feeding pipe 4 extends into the inclined pipe sleeve 12 and passes through the suction pipe 1 into the rotary kiln body 2, the positioning flange 42 is fixedly connected with the end flange of the inclined pipe sleeve 12, and the inclined pipe sleeve 12 can realize stable installation of the feeding pipe 4 and the suction pipe 1.

[0040] In some other embodiments, the transmission sealing head 3 is a ring structure body, the outer side of the transmission sealing head 3 is fixed with a transmission gear ring 32, the transmission gear ring 32 is in transmission connection with an external power source 5 and drives the transmission sealing head 3 and the rotary kiln body 2 to rotate, and the power source can be a motor.

[0041] In some other embodiments, the outer side wall of the rotary kiln body 2 is fixed with a connecting disc 21, the connecting disc 21 is fixedly connected with the flange 33, and the outer side wall of the connecting disc 21 can be in rotation cooperation with an external support roller set 6, and the support roller set 6 includes two support rollers and is used for supporting the rotary rotary kiln body 2.

[0042] The product avoids the problems of powder leakage and gas leakage, and avoids the problem of external gas impurities entering the furnace. Based on the setting of the elastic sealing part, the product has wide application range, strong application compensation ability, can adapt to high temperature, high pressure and frequent fluctuation workstations, has stable sealing performance and high reliability, and is convenient to use and install.

[0043] For the device and use method disclosed in the embodiments, since they correspond to the method disclosed in the embodiments, the description is relatively simple, and the related parts are described in the method part.

[0044] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in the text, but will conform to the widest scope consistent with the principles and novel features disclosed in the text.

Claims

1. An electrically heated rotary kiln seal comprising, include: Suction pipe (1), the suction pipe (1) is located at one end of the rotating kiln body (2); A transmission sealing head (3) is provided. One end of the transmission sealing head (3) is fixed with a flange (33) that is synchronously connected to the rotating kiln body (2). The other end of the transmission sealing head (3) is fixed with an elastic sealing part (31). The elastic sealing part (31) is dynamically sealed to the outer wall of the suction pipe (1). Feed pipe (4), the feed pipe (4) is fixedly connected to the suction pipe (1) at an incline, and the discharge end (41) of the feed pipe (4) passes through the suction pipe (1) and extends into the rotary kiln body (2).

2. An electrically heated rotary kiln seal as claimed in claim 1, wherein, The elastic sealing part (31) includes a baffle (311), a ring (312), an end cap (313), and an oily packing (314). The baffle (311) and the end cap (313) are both ring-shaped. The baffle (311) is fixed at the other end of the transmission sealing head (3). The baffle (311) and the end cap (313) are arranged in parallel and spaced apart. The ring (312) is fixed between the baffle (311) and the end cap (313). The inner side of the ring (312) cooperates with the baffle (311) and the end cap (313) to form an annular groove for accommodating the oily packing (314). The outer wall of the suction tube (1) and the inner wall of the oily packing (314) are in sealing elastic contact.

3. An electrically heated rotary kiln seal as claimed in claim 2, wherein, The outer wall dimension of the suction tube (1) is smaller than the inner wall dimension of the baffle (311) and the end cap (313).

4. An electrically heated rotary kiln seal as claimed in claim 2, wherein, One end of the suction tube (1) extends into the transmission sealing head (3) and is a certain distance away from the baffle (311).

5. An electrically heated rotary kiln seal as claimed in claim 4, wherein, The distance d between one end of the suction tube (1) and the baffle (311) is 40mm to 50mm.

6. An electrically heated rotary kiln seal as claimed in claim 5, wherein, The suction pipe (1) has a suction port (11) on its side wall. The other end of the suction pipe (1) is connected to and communicates with an inclined sleeve (12). The feed pipe (4) has a positioning flange (42) on its outer side wall. The discharge end (41) of the feed pipe (4) extends into the inclined sleeve (12) and passes through the suction pipe (1) into the rotary kiln body (2). The positioning flange (42) is fixedly connected to the end flange of the inclined sleeve (12).

7. An electrically heated rotary kiln seal as defined in claim 1 wherein, The transmission sealing head (3) is an annular structure. A transmission gear ring (32) is fixed on the outside of the transmission sealing head (3). The transmission gear ring (32) is connected to the external power source (5) and causes the transmission sealing head (3) and the rotating kiln body (2) to rotate.

8. An electrically heated rotary kiln seal as claimed in any one of claims 1 to 7, wherein, A connecting plate (21) is fixed on the outer wall of the rotating kiln body (2). The connecting plate (21) is fixedly connected to the flange (33). The outer wall of the connecting plate (21) can rotate with the external support roller group (6).

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