The valve of on-off function is with during maintenance
Technical field
The utility model belongs to valve technology field, is with the valve of on-off function when relating to a kind of maintenance.
Background technique
Valve is accessory very common in daily life and various equipment, control medium by and block.Existing valve is varied, such as: gate valve, throttle valve, ball valve, butterfly valve, membrane valve, plunger valve, stopcock etc.
Because valve needs often to open and close, damaging if therefore occur, whole pipeline may be needed not have fluid or medium when overhauling, making troubles for using, if on-line maintenance, extremely bothering.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, provide a kind of overhaul simultaneously also can the maintenance of control valve break-make time band on-off function valve.
The purpose of this utility model realizes by following technical proposal: a kind of valve of band on-off function when overhauling, comprise valve body, valve gap, spool, valve rod and handle, described spool is arranged in valve body, valve rod one end is connected with handle, the other end is connected with spool, described valve gap is fixed on valve body, and valve rod and valve gap are spirally connected, fluid passage is provided with in described valve body, it is characterized in that: also comprise maintenance spool, valve body is provided with the setting bath for holding maintenance spool, maintenance spool top is provided with connecting rod, and described maintenance spool is connected to bottom spool by connecting rod is dismountable, described valve gap forms annular shoulder block between valve gap and valve body, and make described spool be against on shoulder block by rotary valve rod, now overhaul spool and be positioned at setting bath, connecting rod is positioned on described fluid passage, and described fluid passage is opened, also spool shutoff fluid passage can be made by rotary valve rod, now described maintenance spool is positioned at setting bath bottom land, described setting bath bottom land is provided with positioning spiro pit, the fixed hole coaxial with positioning spiro pit is provided with bottom maintenance spool, also comprise the externally threaded maintenance screw rod of band, described maintenance screw rod end has fixed block, and described maintenance screw rod to be screwed onto on positioning spiro pit and to be fixed with maintenance spool by the cooperation of fixed hole and fixed block.
When valve normally uses, make spool be against on shoulder block by rotary valve rod, now connecting rod is positioned on fluid passage, and fluid passage is opened, or rotary valve rod makes spool shutoff fluid passage; During maintenance, maintenance screw rod is screwed onto on positioning spiro pit and is fixed with maintenance spool by the cooperation of fixed hole and fixed block, to be separated with spool by connecting rod afterwards and valve gap, spool, valve rod and handle together to be dismantled from valve body keep in repair, overhaul screw rod afterwards to continue rotate upward on positioning spiro pit and make maintenance spool shutoff fluid passage, or also can continue again to make maintenance spool open fluid passage upward, therefore make this valve energy on-line maintenance by the cooperation of maintenance spool and maintenance screw rod.
As preferably, described positioning spiro pit is provided with sealing plug, and described sealing plug and positioning spiro pit are spirally connected.
During normal use, sealing plug and positioning spiro pit are spirally connected to prevent valve internal from entering impurity.
As preferably, described fixed hole is inner hexagonal hole, and described fixed block is the outer-hexagonal block mated with fixed hole.
Therefore, after fixed hole is filled in fixed block cooperation, by rotary spool, spool is easily separated from connecting rod.
As preferably, described connecting rod is screwed onto bottom spool.
Compared with prior art, the utility model tool has the following advantages:
When valve normally uses, make spool be against on shoulder block by rotary valve rod, now connecting rod is positioned on fluid passage, and fluid passage is opened, or rotary valve rod makes spool shutoff fluid passage; During maintenance, maintenance screw rod is screwed onto on positioning spiro pit and is fixed with maintenance spool by the cooperation of fixed hole and fixed block, to be separated with spool by connecting rod afterwards and valve gap, spool, valve rod and handle together to be dismantled from valve body keep in repair, overhaul screw rod afterwards to continue rotate upward on positioning spiro pit and make maintenance spool shutoff fluid passage, or also can continue again to make maintenance spool open fluid passage upward, therefore make this valve energy on-line maintenance by the cooperation of maintenance spool and maintenance screw rod.
Accompanying drawing explanation
Fig. 1 and Fig. 2 be the utility model normal time two kinds of using state structural representations;
Structural representation when Fig. 3 is the utility model inspecting state.
Coding in figure is respectively:
1, valve body; 11, fluid passage; 12, setting bath; 13, positioning spiro pit; 14, sealing plug; 2, valve gap; 21, shoulder block; 3, spool; 31, spool is overhauled; 32, connecting rod; 4, valve rod; 5, handle; 6, screw rod is overhauled.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As Fig. 1, shown in Fig. 2 and Fig. 3, the valve of on-off function is with during this maintenance, comprise valve body 1, valve gap 2, spool 3, valve rod 4 and handle 5, spool 3 is arranged in valve body 1, valve rod 4 one end is connected with handle 5, the other end is connected with spool 3, valve gap 2 is fixed on valve body 1, and valve rod 4 and valve gap 2 are spirally connected, fluid passage 11 is provided with in valve body 1, also comprise maintenance spool 31, valve body 1 is provided with the setting bath 12 for holding maintenance spool 31, maintenance spool 31 top is provided with connecting rod 32, and maintenance spool 31 is connected to bottom spool 3 by connecting rod 32 is dismountable, valve gap 2 forms annular shoulder block 21 between valve gap 2 and valve body 1, and make spool 3 be against on shoulder block 21 by rotary valve rod 4, now overhaul spool 31 and be positioned at setting bath 12, connecting rod 32 is positioned on fluid passage 11, and fluid passage 11 is opened, also spool 3 shutoff fluid passage 11 can be made by rotary valve rod 4, now overhaul spool 31 and be positioned at setting bath 12 bottom land, setting bath 12 bottom land is provided with positioning spiro pit 13, the fixed hole coaxial with positioning spiro pit 13 is provided with bottom maintenance spool 31, also comprise the externally threaded maintenance screw rod 6 of band, maintenance screw rod 6 end has fixed block, and maintenance screw rod 6 to be screwed onto on positioning spiro pit 13 and to be fixed with maintenance spool 31 by the cooperation of fixed hole and fixed block.
Further, positioning spiro pit 13 is provided with sealing plug 14, and sealing plug 14 and positioning spiro pit 13 are spirally connected.Fixed hole is inner hexagonal hole, and fixed block is the outer-hexagonal block mated with fixed hole.Connecting rod 32 is screwed onto bottom spool 3.
When valve normally uses, make spool 3 be against on shoulder block 21 by rotary valve rod 4, now connecting rod 32 is positioned on fluid passage 11, and fluid passage 11 is opened, or rotary valve rod 4 makes spool 3 shutoff fluid passage 11; During maintenance, maintenance screw rod 6 is screwed onto on positioning spiro pit 13 and is fixed with maintenance spool 31 by the cooperation of fixed hole and fixed block, to be separated with spool 3 by connecting rod 32 afterwards and valve gap 2, spool 3, valve rod 4 and handle 5 together to be dismantled from valve body 1 keep in repair, overhaul screw rod 6 afterwards continue to rotate upward on positioning spiro pit 13 and make maintenance spool 31 shutoff fluid passage 11, or also can continue again to make maintenance spool 31 open fluid passage 11 upward, therefore make this valve energy on-line maintenance by the cooperation of maintenance spool 31 and maintenance screw rod 6.