阅读说明：本技术 一种磁性锁闭软密封闸阀 (Magnetic locking soft sealing gate valve ) 是由 何春焕 李超 于国峰 冯玉柱 于 2019-10-14 设计创作，主要内容包括：本发明提供一种磁性锁闭软密封闸阀,包括阀体,所述阀体上设置有阀盖,所述阀盖上设置有通孔,所述通孔内设置有阀杆,所述阀杆底端连接有闸板,所述阀盖上设有磁性锁,所述磁性锁包括依次设置在阀盖上的压盖、芯子组件和钥匙组件,所述阀杆的顶端依次穿过阀盖、压盖后插入芯子组件中；所述芯子组件包括锁芯和锁盖,所述锁芯的锁芯孔中设有第一磁铁和铝块,所述压盖的容纳腔中设有第一磁铁和圆柱螺旋压缩弹簧；所述钥匙组件包括钥匙、钥匙罩和钥匙杆,所述钥匙中设有第二磁铁。本发明阀门的开闭结构具有保护装置,不易被破坏及被偷盗,不仅提高了使用安全性能,延长了使用寿命,而且无需专用钥匙开启,操作方便。(The invention provides a magnetic locking soft seal gate valve which comprises a valve body, wherein a valve cover is arranged on the valve body, a through hole is formed in the valve cover, a valve rod is arranged in the through hole, the bottom end of the valve rod is connected with a gate plate, a magnetic lock is arranged on the valve cover, the magnetic lock comprises a gland, a core assembly and a key assembly which are sequentially arranged on the valve cover, and the top end of the valve rod sequentially penetrates through the valve cover and the gland and then is inserted into the core assembly; the core subassembly comprises a lock core and a lock cover, a first magnet and an aluminum block are arranged in a lock core hole of the lock core, and a first magnet and a cylindrical spiral compression spring are arranged in an accommodating cavity of the press cover; the key assembly comprises a key, a key cover and a key rod, and a second magnet is arranged in the key. The opening and closing structure of the valve is provided with the protection device, is not easy to be damaged or stolen, not only improves the use safety performance and prolongs the service life, but also does not need a special key to open and is convenient to operate.)

1. A magnetic locking soft sealing gate valve comprises a valve body (1), wherein a valve cover (3) of a through hole is arranged on the valve body (1), a valve rod (7) is arranged in the through hole, a flashboard (2) is connected to the bottom end of the valve rod (7), the flashboard (2) comprises a framework (21), a rubber layer (22) is coated outside the framework (21), first sealing parts (23) are arranged on the front side and the rear side of the upper part of the flashboard (2), a second sealing part (11) matched with the first sealing part (23) is arranged at a sealing opening of the valve body (1), and the lower end face of the first sealing part (23) is matched and sealed with the upper end face of the second sealing part (11); the novel valve is characterized in that a magnetic lock is arranged on the valve cover (3), the magnetic lock comprises a gland (4), a core assembly (5) and a key assembly (6) which are sequentially arranged on the valve cover (3), the core assembly (5) comprises a lock core (51) and a lock cover (52) sleeved outside the lock core (51), a lock core hole (53) and an insertion hole are formed in the lock core (51), and an accommodating cavity and a through hole are formed in the gland (4); the top end of the valve rod (7) penetrates through holes of the valve cover (3) and the gland (4) in sequence and then is inserted into an insertion hole of the lock cylinder (51), and the gland (4) is inserted into an insertion groove formed by the lock cylinder (51) and the lock cover (52);

a first magnet (54) and an aluminum block (55) are sequentially arranged in a lock cylinder hole (53) of the lock cylinder (51) from top to bottom, and a first iron block (56) and a cylindrical spiral compression spring (57) are sequentially arranged in an accommodating cavity of the gland (4) from top to bottom;

the mounting hole at core subassembly (5) top is inserted to the installation post of key subassembly (6) bottom fixed, key subassembly (6) include key (61) and key cover (62) of setting in the bottom of key (61), transversely inserted key pole (63) in the through-hole on the upper portion of key (61), the both ends of key pole (63) are equipped with first key ring (64), the bottom of key (61) be equipped with lock core hole (53) communicating shrinkage pool, be equipped with in the shrinkage pool with first magnet (54) heterodromous repellent second magnet (65).

2. The magnetic locking soft seal gate valve according to claim 1, characterized in that a second iron block (58) for fastening and fixing the gland (4) is arranged in the transverse through hole of the lock cover (52), and a hydraulic and pneumatic O-shaped rubber ring (59) is arranged on the contact surface between the gland (4) and the lock cover (52) and between the lock core (51) and the lock cover (52) for sealing.

3. The magnetic locking soft seal gate valve according to claim 1, characterized in that an anti-drop convex ring (41), a half-open ring (42), a second key ring (43) and a copper sleeve (44) are arranged on the outer wall of the valve rod (7), the anti-drop convex ring (41) is positioned in the valve cover (3), the half-open ring (42) and the second key ring (43) are positioned in the gland (4), and the copper sleeve (44) is arranged between the contact surfaces of the valve rod (7) and the valve cover (3).

4. The magnetic locking soft seal gate valve according to claim 3, characterized in that a first O-shaped rubber ring (45) seal is arranged between the valve rod (3) and the copper sleeve (44), a second O-shaped rubber ring (46) seal is arranged between the contact surfaces of the gland (4) and the valve cover (3), and a plurality of O-shaped sealing ring seals are arranged between the contact surfaces of the valve cover (3) and the valve rod (7).

5. The magnetic locking soft seal gate valve according to claim 1, characterized in that the gland (4) is fixedly connected with the valve cover (3) through a bolt (47), a flat gasket (48) sealed with the valve cover (3) is sleeved on the bolt (47), and the valve cover (3) is fixedly connected with the valve body (1) through an inner hexagonal bolt (49).

6. The magnetic locking soft seal gate valve of claim 1, characterized in that a center rubber ring (410) is arranged between the contact surfaces of the valve cover (3) and the valve body (1) for sealing.

7. The magnetic locking soft seal gate valve of claim 1, characterized in that the core assembly (5) is provided with an on and off indication on its outer wall.

8. The magnetic locking soft seal gate valve of claim 1, characterized in that the lower end face of the first sealing portion (23) is disposed obliquely inward, and the upper end face of the second sealing portion (11) is disposed obliquely and fitted with the lower end face of the first sealing portion (23) for sealing.

9. The magnetic locking soft seal gate valve according to claim 1, characterized in that guide rails (12) are respectively arranged on the left and right sides of the valve body (1) contacting the gate plate (2), and guide blocks (8) matched with the guide rails (12) are respectively arranged on the left and right sides of the gate plate (2).

10. The magnetic locking soft seal gate valve of claim 1, characterized in that the valve stem (7) is in threaded connection with the gate plate (2) by means of a stem nut (9), and a fastening screw is arranged between the stem nut (9) and the gate plate (2).

Technical Field

The invention relates to the field of gate valves, in particular to a magnetic locking soft sealing gate valve.

Background

The soft seal gate valve is a valve with higher casting precision requirement, has good sealing performance and is widely applied to various industries. The soft seal gate valve in the current market realizes sealing by means of matching of a rubber flashboard sealing surface and a valve body sealing surface wedge angle, the valve body is formed by casting, the sealing surface is a blank surface, the valve body with large specification is difficult to control the casting shrinkage, the chamber width size cannot be ensured, the valve body is unqualified in sealing, and the yield is low; when the rubber gate valve is used, the sealing surface of the rubber gate plate is in direct contact with the valve body seal to realize sealing, so that after the medium pressure in a pipeline is increased, the rubber flap is pushed by the medium to be larger, the rubber surface is easily crushed, and the sealing leakage is caused; the rubber flashboard is directly contacted with the inner wall of the valve body in the opening and closing process of the valve, so that the friction force is large, and the opening and closing torque is large; after the valve rod sealing ring is used for a period of time, the valve rod sealing ring is frequently damaged, and when the sealing element is replaced, the system needs to be closed, so that the operation under pressure cannot be carried out; the service performance of the series of products is seriously influenced. The invention with the authorization notice number of CN208793673U discloses a soft seal gate valve, which comprises a valve body, wherein a valve cover is arranged on the valve body, a through hole is formed in the valve cover, a valve rod is arranged in the through hole, the bottom end of the valve rod is connected with a gate plate, a hand wheel is arranged at the top end of the valve rod after penetrating out of the valve cover, the gate plate comprises a framework, a rubber layer is coated outside the framework, first sealing parts are arranged on the front side and the rear side of the upper part of the gate plate, a second sealing part matched with the first sealing part is arranged at a sealing opening of the valve body, and the lower end face of the first sealing part is matched and sealed with the; the gate valve has a reasonable and compact structure, and effectively solves the problems of large opening and closing torque, high cost, short service life, low safety performance, weak sealing effect and the like of the existing gate valve, thereby protecting parts, prolonging the service life of the valve and meeting the use requirements of a large number of users. However, the valve is controlled to be opened and closed by the hand wheel arranged on the valve cover, the hand wheel serving as an opening and closing structure protrudes out of the valve body, a protection device is not provided, the valve is easy to damage and steal, any person who can contact the hand wheel can open or close the valve at will, and the property management difficulty of public utilities and communities is increased.

At present, valves with locking devices generally use mechanical lock bodies and need special keys to be unlocked, although the method is safe and reliable, when the number of valves with locks is large and the keys are kept by special persons, the special keys corresponding to the valves cannot be used commonly, so that the keeper is inconvenient to carry all the special keys, and the special keys need to be checked during operation, so that great inconvenience is brought to the opening and closing of the valves.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a magnetic locking soft sealing gate valve, the opening and closing structure of the valve is provided with a protection device, the valve is not easy to be damaged and stolen, the use safety performance is improved, the service life is prolonged, a special key is not needed for opening, and the operation is convenient.

According to one aspect of the invention, the magnetic locking soft seal gate valve comprises a valve body (1), wherein a valve cover (3) is arranged on the valve body (1), a through hole is formed in the valve cover (3), a valve rod (7) is arranged in the through hole, the bottom end of the valve rod (7) is connected with a gate plate (2), the gate plate (2) comprises a framework (21), a rubber layer (22) is coated outside the framework (21), first sealing parts (23) are arranged on the front side and the rear side of the upper part of the gate plate (2), a second sealing part (11) matched with the first sealing part (23) is arranged at a sealing opening of the valve body (1), and the lower end face of the first sealing part (23) is matched and sealed with the upper end face of the second sealing part (11);

the valve cover (3) is provided with a magnetic lock, the magnetic lock comprises a gland (4), a core assembly (5) and a key assembly (6) which are sequentially arranged on the valve cover (3), the core assembly (5) comprises a lock core (51) and a lock cover (52) sleeved outside the lock core (51), a lock core hole (53) and an insertion hole are formed in the lock core (51), and an accommodating cavity and a through hole are formed in the gland (4); the top end of the valve rod (7) penetrates through holes of the valve cover (3) and the gland (4) in sequence and then is inserted into an insertion hole of the lock cylinder (51), and the gland (4) is inserted into an insertion groove formed by the lock cylinder (51) and the lock cover (52);

a first magnet (54) and an aluminum block (55) are sequentially arranged in a lock cylinder hole (53) of the lock cylinder (51) from top to bottom, and a first iron block (56) and a cylindrical spiral compression spring (57) are sequentially arranged in an accommodating cavity of the gland (4) from top to bottom;

the mounting hole at core subassembly (5) top is inserted to the installation post of key subassembly (6) bottom fixed, key subassembly (6) include key (61) and key cover (62) of setting in the bottom of key (61), transversely inserted key pole (63) in the through-hole on the upper portion of key (61), the both ends of key pole (63) are equipped with first key ring (64), the bottom of key (61) be equipped with lock core hole (53) communicating shrinkage pool, be equipped with in the shrinkage pool with first magnet (54) heterodromous repellent second magnet (65).

Preferably, a second iron block (58) for fastening and fixing the gland (4) is arranged in a transverse through hole of the lock cover (52), and a hydraulic O-shaped rubber ring (59) for air pressure is arranged on the contact surface between the gland (4) and the lock cover (52) and between the lock cylinder (51) and the lock cover (52) for sealing.

Preferably, be equipped with anticreep bulge loop (41), half ring (42), second key ring (43) and copper sheathing (44) on the outer wall of valve rod (7), anticreep bulge loop (41) are located in valve gap (3), half ring (42) and second key ring (43) are located in gland (4), copper sheathing (44) set up between the contact surface of valve rod (7) and valve gap (3).

Preferably, a first O-shaped rubber ring (45) is arranged between the valve rod (3) and the copper sleeve (44) for sealing, a second O-shaped rubber ring (46) is arranged between the gland (4) and the contact surface of the valve cover (3) for sealing, and a plurality of O-shaped sealing rings are arranged between the valve cover (3) and the contact surface of the valve rod (7) for sealing.

Preferably, the gland (4) is connected and fixed with the valve cover (3) through a bolt (47), a flat gasket (48) sealed with the valve cover (3) is sleeved on the bolt (47), and the valve cover (3) is connected and fixed with the valve body (1) through an inner hexagon bolt (49).

Preferably, a middle rubber ring (410) is arranged between the contact surfaces of the valve cover (3) and the valve body (1) for sealing.

Preferably, the outer wall of the core component (5) is provided with an opening and closing mark.

Preferably, the lower end surface of the first sealing part (23) is arranged obliquely inwards, and the upper end surface of the second sealing part (11) is arranged obliquely and matched with the lower end surface of the first sealing part (23) in an inclined surface manner for sealing. The flashboard sealing surface is sealed on striding over the valve body sealing surface, effectively reduces and opens and close the moment of torsion, has reduced flashboard rubber layer wearing and tearing.

Preferably, the left and right sides that valve body (1) with flashboard (2) contact is provided with guide rail (12) respectively, the left and right sides of flashboard (2) be provided with respectively with guide block (8) of guide rail (12) looks adaptation. The setting of guide block can avoid flashboard and valve body inner wall direct contact, has reduced the valve and has opened and close the moment of torsion, reduces the friction, uses more in a flexible way.

Preferably, the valve rod (7) is in threaded connection with the gate plate (2) through a valve rod nut (9), and a fastening screw is arranged between the valve rod nut (9) and the gate plate (2). The valve rod nut and the flashboard are connected into a whole through threads, and the valve rod nut and the valve rod transmit torque through the trapezoidal threads.

The invention relates to a magnetic locking soft seal gate valve, which has the working principle that: a first magnet and an aluminum block are sequentially arranged in a lock cylinder hole of the lock cylinder from top to bottom, a first iron block and a cylindrical helical compression spring are sequentially arranged in an accommodating cavity of the gland from top to bottom, the first iron block rises by 0.5-1.5mm under the thrust action of the cylindrical helical compression spring in a natural state, one part of the first iron block enters the lock cylinder hole of the lock cylinder, and the other part of the first iron block is still left in the accommodating cavity of the gland, so that the gland and the lock cylinder cannot generate relative displacement, namely, the valve is in a locked state; after installing the key subassembly on the core subassembly, second magnet polarity and first magnet heterodromous repel each other to first magnet promotes aluminium piece and first iron plate and moves down, makes the compression of cylinder spiral compression spring, and first iron plate breaks away from the lock core hole, and the top enters into the chamber that holds of gland completely, makes gland and lock core ability relative rotation, and the key lever of operating again can drive the valve rod and rotate, realizes opening and close the valve.

The valve is in an opening state, when the valve needs to be closed, the key rod is rotated towards the direction marked with 'close', namely the valve rod is driven to rotate to close the valve, the valve rod is provided with a shaft shoulder and cannot lift up and down, the valve rod is matched with a valve rod nut through trapezoidal threads to force the flashboard to move downwards, the guide block is positioned between the flashboard and the valve rod, the sealing surface of the upper half part of the flashboard strides over the sealing surface of the valve body to be gradually contacted, the lower part of the flashboard is also contacted with the bottom of the drift diameter of the valve body immediately, and. The valve is in a closed state, and when the valve needs to be opened, the key rod is rotated towards the direction marked with the 'open', so that the valve rod can be driven to rotate to open the valve.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the magnetic locking soft sealing gate valve, the opening and closing structure of the valve is provided with the protection device, the valve is not easy to damage and steal, the use safety performance is improved, the service life is prolonged, a special key is not needed for opening, and the operation is convenient;

(2) the magnetic locking soft sealing gate valve does not allow related personnel to open or close the valve at will, reduces the property management difficulty of public utilities and communities, meets various use scenes, and widens the use range;

(3) according to the magnetic locking soft seal gate valve, the original wedge angle sealing of the valve body and the sealing surface of the gate plate is changed into the sealing of the gate plate spanning the sealing surface of the valve body, so that the opening and closing torque is effectively reduced, the abrasion of a rubber layer is reduced, the pre-tightening sealing force is reduced, and the problem that the inner part and the outer part are leaked due to poor sealing of the existing soft seal gate valve is effectively solved, so that the safety performance, the sealing effect and the service life are effectively improved; the qualified rate of the pressure test can be ensured even if the bore width shrinkage is abnormal in the valve body casting process; after the pressure of the medium in the pipeline is increased, the sealing surface of the rubber flashboard cannot be damaged, and the service life of the valve is ensured;

(4) according to the magnetic locking soft seal gate valve, the guide block is additionally arranged between the gate plate and the valve body in the guide direction, so that the rubber gate plate is prevented from being in direct contact with the inner wall of the valve body, and the opening and closing torque is reduced;

(5) according to the magnetic locking soft seal gate valve, the anti-falling convex ring is arranged when a sealing element is replaced, the system does not need to be stopped, and the operation under pressure can be carried out on the premise of ensuring no leakage;

(6) the magnetic locking soft sealing gate valve has the advantages of simple structure, ingenious design and remarkable effect;

(7) the magnetic locking soft sealing gate valve is easy to process and assemble, low in cost, high in practicability and suitable for large-scale popularization.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a first schematic structural view of a magnetic locking soft seal gate valve according to the present invention;

FIG. 2 is a second schematic structural view of the magnetic locking soft seal gate valve of the present invention;

FIG. 3 is a schematic view of the construction of the key assembly of the present invention;

FIG. 4 is a schematic view of the installation of the gland and cartridge assembly of the present invention;

FIG. 5 is a schematic view of the installation of the gland, core assembly and key assembly of the present invention;

FIG. 6 is an enlarged view illustrating a first partial structure of the valve body and the shutter according to the present invention;

FIG. 7 is an enlarged view of a second embodiment of the valve body and the shutter of the present invention;

FIG. 8 is an enlarged view of a portion of the magnetic locking soft seal gate valve of the present invention;

in FIGS. 1-8: 1 is a valve body, 2 is a gate plate, 3 is a valve cover, 4 is a gland, 5 is a core assembly, 6 is a key assembly, 7 is a valve rod, 8 is a guide block, 9 is a valve rod nut, 11 is a second sealing part, 12 is a guide rail, 21 is a framework, 22 is a rubber layer, 23 is a first sealing part, 41 is an anti-falling convex ring, 42 is a semi-open ring, 43 is a second key ring, 44 is a copper sleeve, 45 is a first O-shaped rubber ring, 46 is a second O-shaped rubber ring, 47 is a bolt, 48 is a flat washer, 49 is an inner hexagon bolt, 410 is a middle rubber ring, 51 is a lock core, 52 is a lock cover, 53 is a lock core hole, 54 is a first magnet, 55 is an aluminum block, 56 is a first iron block, 57 is a cylindrical helical compression spring, 58 is a second iron block, 59 is a hydraulic pneumatic O-shaped rubber ring, 61 is a key, 62 is a key cover, 63 is a key rod, 64 is a first key ring, and 65 is a second magnet.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.