阅读说明：本技术 一种防氯化氢泄露的气体压缩机用密封结构 (Prevent gas compressor that hydrogen chloride revealed and use seal structure ) 是由 朱宇 乔荣鹤 于 2020-12-23 设计创作，主要内容包括：本发明涉及压缩机技术领域,且公开了一种防氯化氢泄露的气体压缩机用密封结构,包括机身,所述机身的顶部固定连接有中体,所述中体的顶部固定连接有垫头,所述垫头的顶部固定连接有气缸,所述中体的内部依次设有第一密封圈、第一刮油圈和第二刮油圈,所述中体的右侧固定连接有数量为两个的第一充氮入口,所述中体的左侧固定连接有充氮出口。该防氯化氢泄露的气体压缩机用密封结构,通过在中体和垫头内设置有充氮密封结构,并利用高低压差的原理,有效的防止了氯化氢气体出现泄漏,并重重有效保护和引导,在压缩机工作现场实现氯化氢气体的密封零泄漏,且大大增加了密封圈的使用寿命,从而延长了压缩机的维护周期,使用便捷。(The invention relates to the technical field of compressors and discloses a sealing structure for a gas compressor for preventing hydrogen chloride leakage, which comprises a machine body, wherein the top of the machine body is fixedly connected with a middle body, the top of the middle body is fixedly connected with a pad head, the top of the pad head is fixedly connected with a cylinder, a first sealing ring, a first oil scraping ring and a second oil scraping ring are sequentially arranged in the middle body, the right side of the middle body is fixedly connected with two first nitrogen charging inlets, and the left side of the middle body is fixedly connected with a nitrogen charging outlet. This prevent seal structure for gas compressor that hydrogen chloride revealed is through being provided with the nitrogen filling seal structure in the well body and pad head to utilize the principle of high-low pressure difference, the effectual hydrogen chloride gas that has prevented appears leaking, and the heavy effective protection of repetition and guide realize the sealed zero leakage of hydrogen chloride gas at compressor job site, and greatly increased the life of sealing washer, thereby prolonged the maintenance cycle of compressor, it is convenient to use.)

1. The utility model provides a prevent seal structure for gas compressor that hydrogen chloride revealed, includes fuselage (1), its characterized in that: the top fixedly connected with of fuselage (1) well body (2), the top fixedly connected with pad head (3) of well body (2), the top fixedly connected with cylinder (4) of pad head (3), the inside of well body (2) is equipped with first sealing washer (5), first frizing circle (6) and second frizing circle (7) in proper order, the right side fixedly connected with quantity of well body (2) is two first nitrogen inlet (9) that fills, the inside of well body (2) is seted up and is located first cavity (8) between first sealing washer (5) and first frizing circle (6), the bottom the left side intercommunication of first nitrogen inlet (9) has first pipe (10) that is located the inside of well body (2), the left side fixedly connected with of well body (2) fills nitrogen outlet (11), the inboard bottom of pad head (3) is equipped with quantity of second sealing washer (12), the bottom of the pad head (3) is provided with a second cavity (13) positioned between a plurality of second sealing rings (12), the right side of the pad head (3) is fixedly connected with a second nitrogen charging inlet (14), the left side of the second nitrogen charging inlet (14) is communicated with a second conduit (15) communicated with the second cavity (13), the left bottom of the pad head (3) is fixedly connected with a pipe arranging (16), the top of the inner side of the pad head (3) is provided with a plurality of third sealing rings (17), the top of the inner side of the pad head (3) is provided with a third cavity (19) positioned between the plurality of third sealing rings (17), the right side of the third cavity (19) is communicated with a pipe (18), the inner part of the pad head connecting port (3) is fixedly connected with an exhaust pipe (20) communicated with the left side of the third cavity (19), the left top of the pad head (3) is fixedly connected with a leakage outlet (21) communicated with the exhaust pipe (20), the positive swing joint of fuselage (1) has access cover (22), the equal fixedly connected with fixed plate in both ends (23) about access cover (22) the back, there is screw rod (24) inboard of fixed plate (23) through bearing swing joint, the driven awl tooth of middle section fixedly connected with (25) of screw rod (24) surface, the positive meshing of driven awl tooth (25) has initiative awl tooth (26), the inboard fixedly connected with pivot (27) of initiative awl tooth (26), the equal threaded connection in both ends has thread bush (28), two about screw rod (24) surface the equal fixedly connected with inserted bar (29) in one side that thread bush (28) carried on the back mutually, the surface sliding connection of thread bush (28) has limiting plate (30).

2. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the first sealing ring (5), the first oil scraping ring (6), the second oil scraping ring (7), the second sealing ring (12) and the third sealing ring (17) are all arranged along the axial direction of a piston rod of the air cylinder (4).

3. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: and partitions with pore canals are arranged between the machine body (1) and the middle body (2), between the middle body (2) and the pad head (3) and between the pad head (3) and the cylinder (4).

4. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: and packing is arranged between the first sealing ring (5), the second sealing ring (12) and the third sealing ring (17) and the piston rod of the cylinder (4).

5. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the left side of the calandria (16) is communicated with external vacuum-pumping equipment, and the right sides of the first nitrogen charging inlet (9) and the second nitrogen charging inlet (14) are communicated with the external nitrogen charging equipment.

6. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the left end and the right end of the outer surface of the screw rod (24) are fixedly connected with threads in opposite directions, and the inner side of the thread sleeve (28) is provided with a thread groove matched with the threads on the outer surface of the screw rod (24).

7. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the front of pivot (27) run through and extend to the outside of access cover (22) and with access cover (22) move sealing connection, and the front fixedly connected with hand wheel of pivot (27).

8. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the outer surface of the threaded sleeve (28) is square, and a through hole matched with the threaded sleeve (28) is formed in the limiting plate (30).

9. The seal structure for a gas compressor for preventing leakage of hydrogen chloride according to claim 1, characterized in that: the front at both ends all has seted up the jack about fuselage (1) inner chamber, the one end that threaded sleeve (28) was kept away from in inserted bar (29) is located the inside of jack.

Technical Field

The invention relates to the technical field of compressors, in particular to a sealing structure for a gas compressor for preventing hydrogen chloride from leaking.

Background

The piston compressor is a compressor which can make gas be pressurized and transferred by means of reciprocating motion of piston, belonging to volume type compressor, also called reciprocating piston compressor or reciprocating compressor, mainly consisting of working cavity, driving component, machine body and auxiliary component, the working cavity can be directly used for compressing gas, and is formed from cylinder, cylinder sleeve, gas valve, filler, piston and piston rod.

The piston compressor is started by a motor to drive a crankshaft to rotate, a piston reciprocates through the transmission of a connecting rod, and the working volume formed by the inner wall of a cylinder, a cylinder cover and the top surface of the piston can periodically change, for example, Chinese patent CN 105673435B discloses a novel gas compressor, the crankshaft rotates after the motor is started by injecting cleaning fluid between a piston block and a baffle plate of a compression cylinder, the crankshaft drives the piston block to move in the compression cylinder through the connecting rod, the piston block moves downwards to open an air inlet plug, gas enters the compression cylinder, the gas is contacted with the cleaning fluid in the compression cylinder to improve the cleanness of the gas, but the prior gas compressor has the defect of poor sealing effect, the prior gas compressor is generally sealed by a conventional sealing ring, the sealing is incomplete, a small amount of gas still leaks to an equipment site, and after dirt enters a filler sealing ring, make the sealing washer inefficacy, the air leakage increases, can't satisfy sealed requirement to poisonous and corrosive gas simultaneously, and it is inconvenient to use, so proposes the above-mentioned problem of solving with the seal structure for the gas compressor that prevents that hydrogen chloride reveals.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the sealing structure for the gas compressor for preventing the leakage of the hydrogen chloride, which has the advantages of good sealing effect and the like, and solves the problems that the conventional sealing ring is generally adopted for sealing in the conventional gas compressor, the sealing is not thorough, a small amount of gas still leaks to the equipment site, the sealing ring is invalid after dirt enters the packing sealing ring, the gas leakage amount is increased, the sealing requirement cannot be met by toxic and corrosive gas, and the use is inconvenient.

(II) technical scheme

In order to achieve the purpose of good sealing effect, the invention provides the following technical scheme: a sealing structure for a gas compressor for preventing hydrogen chloride leakage comprises a machine body, wherein the top of the machine body is fixedly connected with a middle body, the top of the middle body is fixedly connected with a pad head, the top of the pad head is fixedly connected with a cylinder, the inside of the middle body is sequentially provided with a first sealing ring, a first oil scraping ring and a second oil scraping ring, the right side of the middle body is fixedly connected with two first nitrogen charging inlets, the inside of the middle body is provided with a first cavity between the first sealing ring and the first oil scraping ring, the left side of the first nitrogen charging inlet is communicated with a first conduit inside the middle body, the left side of the middle body is fixedly connected with a nitrogen charging outlet, the bottom of the inner side of the pad head is provided with a second sealing ring in number, the bottom of the pad head is provided with a second cavity between the second sealing rings, the right side of the pad head is fixedly connected with a second nitrogen charging inlet, the left side of the second nitrogen charging inlet is communicated with a second conduit communicated with a second cavity, the bottom of the left side of the cushion head is fixedly connected with a discharge pipe, the top of the inner side of the cushion head is provided with a plurality of third sealing rings, the top of the inner side of the cushion head is provided with a third cavity positioned among the third sealing rings, the right side of the third cavity is communicated with a connecting port, the inside of the cushion head is fixedly connected with an exhaust pipe communicated with the left side of the third cavity, the top of the left side of the cushion head is fixedly connected with a leakage outlet communicated with the exhaust pipe, the front of the machine body is movably connected with an access cover, the left end and the right end of the back of the access cover are both fixedly connected with fixed plates, the inner side of each fixed plate is movably connected with a screw rod through a bearing, the middle section of the outer surface of the screw rod is fixedly connected with a driven, the inboard fixedly connected with pivot of initiative awl tooth, the equal threaded connection in both ends has the thread bush about the screw rod surface, two the equal fixedly connected with inserted bar in one side that the thread bush carried on the back mutually, the surface sliding connection of thread bush has the limiting plate.

Preferably, the first sealing ring, the first oil scraping ring, the second sealing ring and the third sealing ring are all arranged along the axial direction of the cylinder piston rod.

Preferably, partitions with pore canals are arranged between the machine body and the middle body, between the middle body and the pad head and between the pad head and the cylinder.

Preferably, the first sealing ring, the second sealing ring and the third sealing ring are all sealed with the cylinder piston rod by filling materials.

Preferably, the left side of the discharge pipe is communicated with an external vacuum-pumping device, and the right sides of the first nitrogen charging inlet and the second nitrogen charging inlet are both communicated with the external nitrogen charging device.

Preferably, the left end and the right end of the outer surface of the screw rod are fixedly connected with threads in opposite directions, and the inner side of the thread sleeve is provided with a thread groove matched with the threads on the outer surface of the screw rod.

Preferably, the front surface of the rotating shaft penetrates through and extends to the outside of the access cover and is in movable sealing connection with the access cover, and the front surface of the rotating shaft is fixedly connected with a hand wheel.

Preferably, the outer surface of the threaded sleeve is square, and a through hole matched with the threaded sleeve is formed in the limiting plate.

Preferably, jacks are formed in the front faces of the left end and the right end of the inner cavity of the machine body, and one end, far away from the threaded sleeve, of the inserted rod is located inside the jack.

(III) advantageous effects

Compared with the prior art, the invention provides the sealing structure for the gas compressor for preventing the hydrogen chloride from leaking, which has the following beneficial effects:

1. the sealing structure for the gas compressor for preventing the hydrogen chloride leakage comprises a cylinder end, a middle body end, a third sealing ring, a connecting port, a gas discharge pipe, a cushion head, a second sealing ring, a gas discharge port, a gas discharge, meanwhile, in order to prevent the protective nitrogen from accumulating in the middle body and forming pressure, the middle body is provided with a nitrogen charging outlet, a small amount of protective nitrogen is released, in order to prevent the first sealing ring, the second sealing ring and the third sealing ring from being seriously worn due to long-time use and the compressor cannot be stopped and overhauled, a nitrogen protection structure and a plurality of oil scraping rings are arranged in the middle body and used for blowing pressurized gas possibly entering the middle body, the device effectively prevents the leakage of hydrogen chloride gas by arranging the nitrogen charging sealing structures in the middle body and the cushion head and effectively protects and guides the hydrogen chloride gas by repeating the principle of high-low pressure difference, the zero leakage of the hydrogen chloride gas is realized on the working site of the compressor, the service life of the sealing rings is greatly prolonged, and the use is convenient.

2. When the inside of the machine body needs to be overhauled, the hand wheel rotates positively and negatively and drives the rotating shaft and the driving bevel gear to rotate, the back of the driving bevel gear is meshed with the driven bevel gear, so that the driven bevel gear drives the screw rod to rotate positively and negatively, the left end and the right end of the outer surface of the screw rod are fixedly connected with threads in opposite directions, the inner side of the thread sleeve is provided with thread grooves matched with the threads on the outer surface of the screw rod, the outer surface of the thread sleeve is square, the limiting plate is internally provided with through holes matched with the thread sleeve, the thread sleeve is effectively limited to move circularly along with the screw rod, the two thread sleeves move towards opposite sides or opposite sides, when the thread sleeve drives the inserted rod to move into the jack on the machine body, the maintenance cover is fixed, otherwise, the maintenance cover can be opened and the inside of the machine body is overhauled, further improving the service life of the compressor.

Drawings

FIG. 1 is a schematic structural view of a sealing structure for a gas compressor for preventing leakage of hydrogen chloride according to the present invention;

FIG. 2 is an enlarged view of a portion A in FIG. 1 of a sealing structure for a gas compressor for preventing leakage of hydrogen chloride according to the present invention;

FIG. 3 is a bottom cross-sectional view of the connection between the body and the access cover in the sealing structure for a hydrogen chloride leakage prevention gas compressor according to the present invention;

fig. 4 is a side view of the connection between the threaded sleeve and the limiting plate in the sealing structure for the gas compressor for preventing the leakage of the hydrogen chloride according to the present invention.

In the figure: the device comprises a machine body 1, a middle body 2, a pad head 3, a cylinder 4, a first sealing ring 5, a first oil scraping ring 6, a second oil scraping ring 7, a first cavity 8, a first nitrogen charging inlet 9, a first guide pipe 10, a nitrogen charging outlet 11, a second sealing ring 12, a second cavity 13, a second nitrogen charging inlet 14, a second guide pipe 15, a third sealing ring 16, a third sealing ring 17, a connecting port 18, a third cavity 19, an exhaust pipe 20, a leakage outlet 21, an access cover 22, a fixing plate 23, a screw rod 24, a driven bevel gear 25, a driving bevel gear 26, a rotating shaft 27, a threaded sleeve 28, an inserted rod 29 and a limiting plate 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a sealing structure for a gas compressor for preventing hydrogen chloride leakage comprises a body 1, a middle body 2 fixedly connected to the top of the body 1, a pad head 3 fixedly connected to the top of the middle body 2, a cylinder 4 fixedly connected to the top of the pad head 3, partitions with ducts are respectively arranged between the body 1 and the middle body 2, between the middle body 2 and the pad head 3, and between the pad head 3 and the cylinder 4, a first sealing ring 5, a first oil scraping ring 6 and a second oil scraping ring 7 are sequentially arranged in the middle body 2, two first nitrogen-filled inlets 9 are fixedly connected to the right side of the middle body 2, a first cavity 8 between the first sealing ring 5 and the first oil scraping ring 6 is arranged in the middle body 2, a first conduit 10 positioned in the middle body 2 is communicated to the left side of the first nitrogen-filled inlet 9 at the bottom, the left side of the first conduit 10 is communicated with the first cavity 8, the left side of the middle body 2 is fixedly connected with a nitrogen filling outlet 11, the bottom of the inner side of the pad head 3 is provided with a plurality of second sealing rings 12, the bottom of the pad head 3 is provided with a second cavity 13 positioned between the plurality of second sealing rings 12, the right side of the pad head 3 is fixedly connected with a second nitrogen filling inlet 14, the left side of the second nitrogen filling inlet 14 is communicated with a second conduit 15 communicated with the second cavity 13, the left bottom of the pad head 3 is fixedly connected with a drain pipe 16, the left side of the drain pipe 16 is communicated with external vacuum pumping equipment, the right sides of the first nitrogen filling inlet 9 and the second nitrogen filling inlet 14 are both communicated with the external nitrogen filling equipment, the top of the inner side of the pad head 3 is provided with a plurality of third sealing rings 17, the first sealing ring 5, the second sealing ring 12 and the third sealing ring 17 are all sealed with a piston rod of the cylinder 4 by filling materials, and the first sealing ring 5, the first oil scraping ring 6, the second oil, The second sealing ring 12 and the third sealing ring 17 are arranged along the axial direction of the piston rod of the cylinder 4, the top of the inner side of the pad head 3 is provided with a third cavity 19 positioned among the plurality of third sealing rings 17, the right side of the third cavity 19 is communicated with a connecting port 18, the inner part of the pad head 3 is fixedly connected with an exhaust pipe 20 communicated with the left side of the third cavity 19, the top of the left side of the pad head 3 is fixedly connected with a leakage outlet 21 communicated with the exhaust pipe 20, the front side of the machine body 1 is movably connected with an access cover 22, the front side of the machine body 1 is provided with a stepped hole, the access cover 22 is positioned inside the stepped hole, a sealing ring is arranged between the access cover 22 and the stepped hole to ensure the connection sealing performance, the left end and the right end of the back side of the access cover 22 are fixedly connected with fixing plates 23, the inner side of the fixing plates 23 is movably connected with, the front of the driven bevel gear 25 is engaged with a driving bevel gear 26, the inner side of the driving bevel gear 26 is fixedly connected with a rotating shaft 27, the front of the rotating shaft 27 penetrates through and extends to the outside of the access cover 22 and is in movable sealing connection with the access cover 22, the front of the rotating shaft 27 is fixedly connected with a hand wheel, the left end and the right end of the outer surface of the screw rod 24 are in threaded connection with threaded sleeves 28, the left end and the right end of the outer surface of the screw rod 24 are in fixed connection with threads in opposite directions, the inner side of the threaded sleeves 28 is provided with threaded grooves matched with the threads on the outer surface of the screw rod 24, one sides of the two threaded sleeves 28 opposite to each other are fixedly connected with inserting rods 29, the front of the left end and the right end of the inner cavity of the machine body 1 are provided with inserting holes, one ends of the inserting rods 29 far away from the threaded sleeves 28 are positioned in the inserting holes, the limiting plate 30 is provided with a through hole matched with the threaded sleeve 28.

When the gas compressor is used, gas leaked from the piston rod of the gas compressor flows from the end of the cylinder 4 to the end of the middle body 2, the leaked gas firstly passes through the third sealing ring 17 and then is less and less, the pressure is gradually reduced, meanwhile, a small amount of gas enters the third cavity 19 through the connecting port 18 and is orderly discharged to an external waste pipeline through the leakage outlet 21 through the exhaust pipe 20, at the moment, a small amount of pressurized gas still remains on the surface of the piston rod and reaches the cushion head 3, the cushion head 3 and the middle body 2 are designed to have nitrogen with higher pressure at the separation part between the cushion head 3 and the middle body 2, the cushion head 3 is in a negative pressure state, the pressurized medium flowing out is orderly guided along with the discharge port 16, in order to prevent the sealing failure of the filler and increase the exhaust amount, the second sealing ring 12 is arranged between the cushion head 3 and the middle body 2 to seal and continuously separate the pressurized gas, in addition, the nitrogen is blown and enters, meanwhile, in order to prevent the protective nitrogen from accumulating and forming pressure in the middle body 2, the middle body 2 is provided with a nitrogen filling outlet 11 for releasing a small amount of protective nitrogen, and in order to prevent the first sealing ring 5, the second sealing ring 12 and the third sealing ring 17 from being seriously abraded due to long-time use and the compressor cannot be stopped for maintenance, a nitrogen protection structure and a plurality of oil scraping rings are arranged in the middle body 2 and used for blowing pressurized gas possibly entering the middle body 2.

To sum up, the sealing structure for the gas compressor for preventing the leakage of the hydrogen chloride comprises a gas compressor, a cylinder 4, a middle body 2, a connecting port 18, a vent pipe 20, a cushion head 3, a second sealing ring 12, a third sealing ring 17, a third sealing ring 21, a third sealing ring 18, a third cavity 19, a vent pipe 20, a vent pipe 21, a third sealing ring 12, a vent pipe 3, a vent pipe 16, a third sealing ring 17, a third sealing ring, a vent pipe 21, a cushion head 3, a third sealing ring, a vent pipe 21, a cushion head 3 and a middle body 2, in addition, nitrogen is blown into the cushion head 3 until the amount of the middle body 2 is zero, meanwhile, in order to prevent the protective nitrogen from accumulating and forming pressure on the middle body 2, a nitrogen filling outlet 11 is arranged on the middle body 2 to release a small amount of protective nitrogen, in order to prevent the first sealing ring 5, the second sealing ring 12 and the third sealing ring 17 from being seriously abraded due to long-term use and the compressor cannot be stopped for maintenance, a nitrogen protection structure and a plurality of oil scraping rings are arranged in the middle body 2 to blow pressurized gas possibly entering the middle body 2, the device effectively prevents the leakage of the hydrogen chloride gas by arranging nitrogen filling sealing structures in the middle body 2 and the cushion head 3 and utilizes the principle of high-low pressure difference, and effective protection and guide are repeated, the zero leakage of the hydrogen chloride gas is realized on the working site of the compressor, the service life of the sealing rings is greatly prolonged, and the maintenance cycle of the compressor is prolonged, the use is convenient.

Moreover, when the interior of the machine body 1 needs to be overhauled, the hand wheel is rotated forward and backward, the rotating shaft 27 and the driving bevel gear 26 are driven to rotate, the back of the driving bevel gear 26 is meshed with the driven bevel gear 25, the driven bevel gear 25 drives the screw rod 24 to rotate forward and backward, the left end and the right end of the outer surface of the screw rod 24 are fixedly connected with threads in opposite directions, the inner side of the thread sleeve 28 is provided with thread grooves matched with the threads on the outer surface of the screw rod 24, the outer surface of the thread sleeve 28 is square, the inside of the limiting plate 30 is provided with through holes matched with the thread sleeve 28, the thread sleeve 28 is effectively limited to do circular motion along with the screw rod 24, the two thread sleeves 28 move towards opposite or opposite sides, when the thread sleeve 28 drives the inserted rod 29 to move into the insertion hole on the machine body, the maintenance cover 22 is fixed, otherwise, the inserted rod 29 moves out of the insertion hole, the maintenance cover, the service life of the compressor is further prolonged, the problems that the conventional sealing ring is generally adopted for sealing in the conventional gas compressor, the sealing is not thorough, a small amount of gas still leaks to the equipment site, the sealing ring is disabled after dirt enters the packing sealing ring, the gas leakage amount is increased, the sealing requirement cannot be met for toxic and corrosive gas, and the use is inconvenient are solved.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.