Corrosion-resistant airtight rotary valve

Abstract

The utility model relates to a corrosion-resistant airtight rotary valve which comprises a valve body, an end cover is installed outside the valve body, a rotor shaft is installed inside the valve body, and a sealing mechanism is arranged inside the valve body. The sealing mechanism comprises a bearing gland, a deep groove ball bearing, a locking nut, a rotor shaft gland, a spring seal, an airtight chamber, a shaft check ring and a connecting disc. According to the corrosion-resistant airtight rotary valve, firstly, materials enter from the upper feeding port, the controller controls the starting of the starting motor, at the moment, the rotor shaft is started, the materials are driven to the lower discharging port through rotation of the rotor shaft, the materials are discharged from the discharging port, and in the material conveying process, high-pressure gas enters the airtight chamber through the end cover and then is discharged in a rotating mode through the airtight sealing sleeve spiral groove; an intensive gas wall is formed between the rotor shaft and the end cover, materials are prevented from entering the shaft end of the rotor shaft, gas at the other end acts on the spring seal, the tension degree of the spring seal spring is improved, the contact face of an inner lip opening and an outer lip opening is tighter, and the sealing performance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary valves, in particular to a corrosion-resistant airtight rotary valve. Background Art

[0002] The rotary valve, also known as the discharge valve or star discharger, is a mechanical device that changes the valve from an open position to a closed position by rotating a rotating component such as a rotating baffle. It is mainly used for conveying corrosive granular materials and powders.

[0003] The existing rotary valve generally has poor sealing performance during use, and particles or powders are prone to leakage, which threatens the life safety of workers. Therefore, a corrosion-resistant airtight rotary valve is proposed to solve the above-mentioned problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a corrosion-resistant airtight rotary valve having the advantages of good airtightness and high safety, and solves the problem that the existing rotary valves generally have poor sealing during use, and particles or powders are prone to leakage, thereby threatening the life safety of the workers.

[0005] To achieve the above object, the utility model provides the following technical solution: a corrosion-resistant airtight rotary valve, comprising a valve body, an end cover is installed on the outside of the valve body, a rotor shaft is installed on the inside of the valve body, and a sealing mechanism is provided inside the valve body;

[0006] The sealing mechanism includes a bearing cover, a deep groove ball bearing, a locking nut, a rotor shaft cover, a universal seal, an airtight chamber, a shaft retaining ring and a connecting plate. The bearing cover is installed on the outside of the rotor shaft, a deep groove ball bearing is sleeved on the outside of the rotor shaft, a locking nut is threadedly connected to the inside of the deep groove ball bearing, a rotor shaft cover is installed on the outside of the rotor shaft, a universal seal is arranged on the outside of the rotor shaft, an airtight chamber is arranged on the inside of the valve body, a shaft retaining ring is fixedly installed on the outside of the rotor shaft, and a connecting plate is installed on the outside of the valve body.

[0007] Furthermore, a driving motor is fixedly connected to the right side of the valve body, and the valve body, end cover and rotor shaft are all made of stainless steel.

[0008] Furthermore, the pan-seal is a PTFE layer, a fixing screw is provided on the outside of the end cover, and the bearing gland is threadedly connected to the end cover via the fixing screw.

[0009] Furthermore, the number of the deep groove ball bearings is two, and both of the two deep groove ball bearings are connected to the rotor shaft via a locking nut.

[0010] Furthermore, the number of the pan-seals is two, and both of the two pan-seals are sleeved on the outside of the rotor shaft, and both of the two pan-seals are located between the two deep groove ball bearings.

[0011] Furthermore, the number of the airtight chambers is two, the shaft retaining ring is located on the right side of the deep groove ball bearing on the right side, and the drive motor is connected to the valve body through the connecting plate.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. The corrosion-resistant airtight rotary valve has a valve body, and the material enters from the upper feed port, and the rotor shaft rotates to drive the material to the lower discharge port, and the material is discharged from the discharge port. The valve body is sealed by arranging an end cover, and the sealing mechanism is arranged. The various structures of the sealing mechanism cooperate with each other, so that the airtightness inside the valve body can be improved to prevent material from flowing.

[0014] 2. The corrosion-resistant airtight rotary valve uses high-pressure gas to pass through the end cover to the airtight chamber, and then is discharged in a rotating manner through the spiral groove of the airtight sleeve, forming a dense gas wall between the rotor shaft and the end cover to prevent materials from entering the shaft end of the rotor shaft. The gas at the other end acts on the flood seal to increase the tension of the flood seal spring, making the contact surface of the inner and outer lips tighter and the sealing better. The airtight structure at both ends of the rotor is adopted to ensure that the material at the shaft end of the rotor does not enter the bearing and escape outward. The spiral groove of the airtight sleeve is stopped by setting a deep groove ball bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0018] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0019] In the figure: 1 valve body, 2 end cover, 3 rotor shaft, 4 sealing mechanism, 401 bearing cover, 402 deep groove ball bearing, 403 locking nut, 404 rotor shaft cover, 405 flood seal, 406 airtight chamber, 407 shaft retaining ring, 408 connecting plate, 5 driving motor. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 A corrosion-resistant airtight rotary valve comprises a valve body 1, an end cover 2 is installed outside the valve body 1, a rotor shaft 3 is installed inside the valve body 1, and a sealing mechanism 4 is arranged inside the valve body 1;

[0022] The sealing mechanism 4 includes a bearing cover 401, a deep groove ball bearing 402, a locking nut 403, a rotor shaft cover 404, a universal seal 405, an airtight chamber 406, a shaft retaining ring 407 and a connecting plate 408. The bearing cover 401 is installed on the outside of the rotor shaft 3, the deep groove ball bearing 402 is sleeved on the outside of the rotor shaft 3, the inner thread of the deep groove ball bearing 402 is connected with the locking nut 403, the rotor shaft cover 404 is installed on the outside of the rotor shaft 3, the universal seal 405 is arranged on the outside of the rotor shaft 3, the airtight chamber 406 is arranged inside the valve body 1, the shaft retaining ring 407 is fixedly installed on the outside of the rotor shaft 3, and the connecting plate 408 is installed on the outside of the valve body 1.

[0023] exist Figure 1 and Figure 2 The right side of the valve body 1 is fixedly connected with a driving motor 5. The valve body 1, the end cover 2 and the rotor shaft 3 are all made of stainless steel and have good corrosion resistance.

[0024] exist Figure 1 and Figure 2 The pan seal 405 is a PTFE layer, a fixing screw is provided on the outside of the end cover 2, and the bearing gland 401 is threadedly connected to the end cover 2 through the fixing screw.

[0025] exist Figure 1 and Figure 3 By setting a sealing mechanism 4, the various structures of the sealing mechanism 4 cooperate with each other to achieve better air tightness inside the valve body 1 and prevent material from flowing. The sealing mechanism 4 includes a bearing cover 401, a deep groove ball bearing 402, a locking nut 403, a rotor shaft cover 404, a universal plug seal 405, an airtight chamber 406, a shaft retaining ring 407 and a connecting plate 408. There are two deep groove ball bearings 402, and the two deep groove ball bearings 402 are connected to the rotor shaft 3 through a locking nut 403. The universal plug seal 405 is made of PTFE material, and the stainless steel spring in the middle is both corrosion-resistant and high-temperature-resistant. The good sealing performance has a better effect on the transportation of powder materials.

[0026] exist Figure 2 and Figure 3 There are two pan-seals 405 , and both pan-seals 405 are sleeved on the outside of the rotor shaft 3 . Both pan-seals 405 are located between the two deep groove ball bearings 402 .

[0027] exist Figure 2 and Figure 4 There are two airtight chambers 406 , a shaft retaining ring 407 is located on the right side of the right deep groove ball bearing 402 , and a driving motor 5 is connected to the valve body 1 through a connecting plate 408 .

[0028] In summary, in the corrosion-resistant airtight rotary valve, high-pressure gas passes through the end cover 2 to the airtight chamber 406, and is then discharged in a rotating manner through the spiral groove of the airtight sleeve, forming a dense gas wall between the rotor shaft 3 and the end cover 2 to prevent materials from entering the shaft end of the rotor shaft 3. The gas at the other end acts on the flood seal 405 to increase the spring tension of the flood seal 405, making the contact surface of the inner and outer lips tighter and the sealing better. An airtight structure is adopted at both ends of the rotor to ensure that the material at the shaft end of the rotor shaft 3 does not enter the bearing and escape outward, and the spiral groove of the airtight sleeve is stopped by arranging a deep groove ball bearing 402.

[0029] Furthermore, when in use, the material first enters from the upper feed port, and the controller controls the starter motor 5 to start. At this time, the rotor shaft 3 starts, and the rotor shaft 3 rotates to drive the material to the lower discharge port, and the material is discharged from the discharge port. During the feeding process, the high-pressure gas passes through the end cover 2 to the airtight chamber 406, and is then discharged in a rotating manner through the spiral groove of the airtight sleeve, forming a dense gas wall between the rotor shaft 3 and the end cover 2 to prevent the material from entering the shaft end of the rotor shaft 3. The gas at the other end acts on the flood seal 405 to increase the spring tension of the flood seal 405, so that the contact surface of the inner and outer lips is tighter and the sealing is better, thereby ensuring that the material at the shaft end of the rotor shaft 3 does not enter the bearing and escape outward.

[0030] The electrical components in this article are all connected to the external controller and 220V mains electricity, and the controller can be a conventional known device that controls a computer, etc.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] 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 corrosion-resistant airtight rotary valve, comprising a valve body (1), characterized in that: An end cover (2) is installed on the outside of the valve body (1), a rotor shaft (3) is installed on the inside of the valve body (1), and a sealing mechanism (4) is provided on the inside of the valve body (1); The sealing mechanism (4) comprises a bearing cover (401), a deep groove ball bearing (402), a locking nut (403), a rotor shaft cover (404), a universal seal (405), an airtight chamber (406), a shaft retaining ring (407) and a connecting plate (408); the bearing cover (401) is installed on the outside of the rotor shaft (3); the deep groove ball bearing (402) is sleeved on the outside of the rotor shaft (3); the locking nut (403) is threadedly connected to the inside of the deep groove ball bearing (402); the rotor shaft cover (404) is installed on the outside of the rotor shaft (3); the universal seal (405) is arranged on the outside of the rotor shaft (3); the airtight chamber (406) is arranged on the inside of the valve body (1); the shaft retaining ring (407) is fixedly installed on the outside of the rotor shaft (3); and the connecting plate (408) is installed on the outside of the valve body (1).

2. The corrosion-resistant airtight rotary valve according to claim 1, characterized in that: A driving motor (5) is fixedly connected to the right side of the valve body (1); the valve body (1), the end cover (2) and the rotor shaft (3) are all made of stainless steel.

3. The corrosion-resistant airtight rotary valve according to claim 1, characterized in that: The pan-seal (405) is a PTFE layer, a fixing screw is provided on the outside of the end cover (2), and the bearing gland (401) is threadedly connected to the end cover (2) via the fixing screw.

4. The corrosion-resistant airtight rotary valve according to claim 1, characterized in that: The number of the deep groove ball bearings (402) is two, and the two deep groove ball bearings (402) are both connected to the rotor shaft (3) via a locking nut (403).

5. The corrosion-resistant airtight rotary valve according to claim 1, characterized in that: There are two pan-seals (405), both pan-seals (405) are sleeved on the outside of the rotor shaft (3), and both pan-seals (405) are located between the two deep groove ball bearings (402).

6. The corrosion-resistant airtight rotary valve according to claim 2, characterized in that: The number of the airtight chambers (406) is two, the shaft retaining ring (407) is located on the right side of the deep groove ball bearing (402) on the right side, and the drive motor (5) is connected to the valve body (1) via the connecting plate (408).

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