A toilet tank drain valve

Abstract

The application provides a toilet cistern drain valve, which comprises a body, an inner core pipe, a lifting device, a drain control device and a base; the drain control device is arranged in a cavity of the body and comprises a float barrel, an unlocking block, a linkage rod and a limiting protrusion; the lifting device is arranged in the cavity and is arranged on a mounting seat of the body; a pushing piece is arranged in the middle part of the lifting device; the pushing piece is located below a bearing piece of the linkage rod; an upper part of the lifting device bears against a bearing end of the inner core pipe; the lifting device pushes the inner core pipe to rise, so that the drain valve drains; when the inner core pipe rises to a position where the limiting protrusion exceeds the unlocking block, the inner core pipe and the linkage rod are synchronously lifted; the linkage rod drives the unlocking block to move and insert into a lower part of the limiting protrusion, so that the limiting protrusion is locked on an upper part of the unlocking block; after the draining is completed, the float barrel loses buoyancy and drives the linkage rod to descend; the linkage rod drives the unlocking block to move and exit the lower part of the limiting protrusion, so that the inner core pipe is unlocked; the inner core pipe falls and closes the drain valve to stop draining. The inner core pipe is locked without relying on the buoyancy of the float barrel, and the volume of the float barrel can be made smaller.

Description

TECHNICAL FIELD

[0001] The present application relates to a toilet tank drain valve device, in particular to a toilet tank drain valve. BACKGROUND

[0002] The existing toilet tank drain valve is through the inner core pipe set on the body, the water sealing piece of the lower end of the inner core pipe leaves the water outlet of the base to open the drain of the drain valve, when the inner core pipe is lifted to a certain height, the protruding catch point on the inner core pipe is matched with the catch strip on the swing frame, the inner core pipe is hung and cannot fall, and the toilet is flushed; when the water level in the toilet tank decreases to a certain height, the float bucket loses buoyancy, the float bucket falls to drive the swing frame to rotate, the catch strip on the swing frame is separated from the catch point on the inner core pipe, the inner core pipe falls, and the water sealing piece at the lower end of the inner core pipe reseals the water outlet of the base to close the drain of the drain valve and stop flushing the toilet.

[0003] The existing toilet drain valve has the following characteristics:

[0004] 1. The drain control device is driven by the float bucket to rotate on the body, and the catch strip on the swing frame is matched with the protruding catch point on the side wall of the inner core pipe to realize the catch and release of the inner core pipe.

[0005] 2. The float bucket floats in the body by its own buoyancy, so the float bucket needs to be designed with a larger volume.

[0006] 3. The overflow pipe is arranged on the outer side of the base. Now there is also a design that uses the hollow pipe of the inner core pipe as the overflow pipe. In order to ensure the flow, the diameter of the inner core pipe with the overflow pipe needs to be larger than the diameter of the old inner core pipe. In the case that the diameter of the body is limited by standards, the float bucket on the outer side of the inner core pipe must be made smaller, which reduces the buoyancy and the supporting force of the catch strip on the protruding catch point to some extent. The protruding catch point is easily separated from the catch of the catch strip, the inner core pipe falls prematurely, and the design requirements of the drain are not met. Therefore, the traditional structure that the old catch strip is arranged on the swing frame and the catch strip is caught or separated from the protruding catch point on the inner core pipe by driving the swing frame to rotate by the up and down movement of the float bucket is not suitable for the current demand of the drain valve. SUMMARY

[0007] The present application provides a toilet tank drain valve, which has a small volume of float bucket and is suitable for assembling with a large diameter inner core pipe.

[0008] The technical scheme adopted to achieve the above-mentioned purpose is:

[0009] A toilet tank drain valve, comprising a body, an inner core tube, a lifting device, a drain control device, a base; the base is provided with a water inlet and a water outlet; the body comprises a shell and a mounting seat, the body is mounted on the base through the mounting seat, the shell is mounted on the mounting seat, and the shell is a cavity capable of entering and exiting water; the inner core tube is vertically movably arranged on the mounting seat in the cavity, and the inner core tube is provided with an abutting end; the lower end of the inner core tube extends from the bottom of the mounting seat and is fixed with a water sealing piece; the water sealing piece is located above the water outlet of the base and cooperates with the water outlet of the base to realize the opening and closing of the drain; the drain control device is arranged in the cavity and comprises a float bucket, an unlocking block, a connecting rod and a limiting protrusion; the limiting protrusion is arranged on the outer side wall of the inner core tube; the unlocking block is horizontally movably arranged on the mounting seat; the float bucket is arranged on the connecting rod; the connecting rod is vertically movably arranged on the mounting seat; the lower end of the connecting rod is connected with the unlocking block; the upper end of the connecting rod is provided with an abutting piece; the lifting device is arranged in the cavity and on the mounting seat; the middle part of the lifting device is provided with a pushing piece; the pushing piece is located below the abutting piece of the connecting rod; the upper part of the lifting device abuts against the abutting end of the inner core tube; the lifting device is lifted to push the inner core tube upward; the water sealing piece of the inner core tube is away from the water outlet of the base to realize the drainage of the drain valve; when the inner core tube is lifted to the lower part of the limiting protrusion and exceeds the unlocking block, the pushing piece in the middle part of the lifting device abuts against the abutting piece of the connecting rod; the lifting device synchronously drives the inner core tube and the connecting rod to rise; the connecting rod drives the unlocking block to move horizontally and insert into the lower part of the limiting protrusion; the limiting protrusion is locked on the upper part of the unlocking block; the lifting device is lowered to reset; the pushing piece in the middle part of the lifting device is separated from the abutting piece of the connecting rod; the upper part of the lifting device is separated from the abutting end of the inner core tube; when the drainage is completed, the float bucket loses buoyancy and falls under the action of gravity, drives the connecting rod to descend, and the connecting rod drives the unlocking block to move horizontally and exit from the lower part of the limiting protrusion; the limiting protrusion loses the support of the unlocking block, unlocks the inner core tube, and the inner core tube falls; the water sealing piece on the inner core tube reseals the water outlet of the base, and the drain valve is closed.

[0010] Further, the connecting rod lower end connected with the unlocking block comprises a magnetic element and an inclined surface arranged on the side of the lower end of the connecting rod; the magnetic element is located above the inclined surface; the end surface of the unlocking block is also provided with a magnetic element; when the lifting device synchronously drives the inner core tube and the connecting rod to rise, the inclined surface of the connecting rod pushes against the end surface of the unlocking block; the unlocking block moves horizontally and inserts into the lower part of the limiting protrusion; the limiting protrusion is locked on the upper part of the unlocking block; when the drainage is completed, the float bucket loses buoyancy and falls under the action of gravity, drives the connecting rod to descend, and the magnetic element of the connecting rod is attracted to the end surface magnetic element of the unlocking block; the unlocking block moves horizontally and exits from the lower part of the limiting protrusion; the inner core tube is unlocked.

[0011] Further, the lifting device is pneumatic transmission, comprising a telescopic air bag, a driving member, the telescopic air bag is installed on the mounting seat of the body, the telescopic air bag is connected with the air pump outside the shell of the body through the air pipe, the driving member is fixed on the upper part of the telescopic air bag, the upper part or the top of the driving member abuts against the abutting end of the inner core tube, and the middle part of the driving member is provided with the pushing member.

[0012] Further, the unlocking block is provided with a vertical allowing slot, the allowing slot is used for allowing the up-down movement of the limiting protrusion, when the inner core tube is lifted to the lower part of the limiting protrusion and exceeds the unlocking block, the limiting protrusion is separated from the allowing slot, the lifting device drives the inner core tube and the connecting rod to ascend synchronously, the connecting rod drives the unlocking block to move transversely and is inserted into the lower part of the limiting protrusion, the limiting protrusion is dislocated with the allowing slot, the limiting protrusion is abutted on the upper part of the unlocking block, when the drainage is completed, the float bucket loses buoyancy and falls under the action of gravity, drives the connecting rod to descend, the connecting rod drives the unlocking block to move transversely and returns to move out of the lower part of the limiting protrusion, the limiting protrusion is recombined with the allowing slot, and the inner core tube is unlocked.

[0013] Further, the limiting protrusion is a vertical convex rib arranged on the outer side wall of the inner core tube, the convex rib is slidably arranged in the allowing slot, when the inner core tube is lifted to the lower part of the convex rib and exceeds the unlocking block, the convex rib is separated from the allowing slot, the lifting device drives the inner core tube and the connecting rod to ascend synchronously, the connecting rod drives the unlocking block to move transversely and is inserted into the lower part of the convex rib, the convex rib is dislocated with the allowing slot, the convex rib is abutted on the upper part of the unlocking block, when the drainage is completed, the float bucket loses buoyancy and falls under the action of gravity, drives the connecting rod to descend, the connecting rod drives the unlocking block to move transversely and returns to move out of the lower part of the convex rib, the convex rib is recombined with the allowing slot, and the inner core tube is unlocked.

[0014] Further, the pushing piece is a convex step of the middle annular protrusion of the driving piece, the abutting piece at the upper end of the linkage rod is a transversely extending stop sheet, and the stop sheet is located above the convex step. When the air pump inflates the telescopic air bag through the air pipe, the telescopic air bag expands upward, driving the driving piece to rise. The upper part or top of the driving piece abuts against the abutting end of the inner core tube, driving the inner core tube to rise. When the convex rib as the limiting protrusion exceeds the unlocking block, the convex rib is separated from the accommodation slot. The convex step as the pushing piece of the driving piece reaches below the stop sheet as the abutting piece at the upper end of the linkage rod. The telescopic air bag continues to expand upward, the upper part or top of the driving piece abuts against the abutting end of the inner core tube, driving the inner core tube to rise. The convex step as the pushing piece of the driving piece abuts against the stop sheet as the abutting piece at the upper end of the linkage rod, driving the linkage rod to rise. The inclined surface of the linkage rod pushes against the end surface of the unlocking block, the unlocking block moves transversely to insert into the lower part of the limiting protrusion, the convex rib as the limiting protrusion is positioned on the upper part of the unlocking block, and drainage is realized. When the drainage is completed, the float bucket loses buoyancy and falls under the action of gravity, driving the linkage rod to descend. The magnetic element of the linkage rod is attracted to the end surface magnetic element of the unlocking block, driving the unlocking block to move transversely and return, and the convex rib as the limiting protrusion is separated from the lower part of the unlocking block, unlocking the inner core tube.

[0015] Further, the toilet drainage valve is a double drainage valve, the abutting end on the inner core tube includes a half-drainage abutting end and a full-drainage abutting end. The drainage control device includes a half-drainage control device and a full-drainage control device. The half-drainage control device and the full-drainage control device are symmetrically arranged on both sides of the inner core tube. The float bucket includes a half-drainage float bucket and a full-drainage float bucket. The unlocking block includes a half-drainage unlocking block and a full-drainage unlocking block. The linkage rod includes a half-drainage linkage rod and a full-drainage linkage rod. The limiting protrusion includes a half-drainage limiting protrusion and a full-drainage limiting protrusion. The half-drainage float bucket, the half-drainage unlocking block, the half-drainage linkage rod, and the half-drainage limiting protrusion constitute the half-drainage control device. The half-drainage limiting protrusion is arranged on the outer side wall of the inner core tube. The half-drainage unlocking block is transversely arranged on the mounting seat. The half-drainage float bucket is arranged on the half-drainage linkage rod. The half-drainage linkage rod is vertically arranged on the mounting seat. The lower end of the half-drainage linkage rod is connected with the half-drainage unlocking block. The upper end of the half-drainage linkage rod is provided with a half-drainage abutting piece. The full-drainage float bucket, the full-drainage unlocking block, the full-drainage linkage rod, and the full-drainage limiting protrusion constitute the full-drainage control device. The full-drainage limiting protrusion is also arranged on the outer side wall of the inner core tube. The full-drainage unlocking block is transversely arranged on the mounting seat. The full-drainage float bucket is arranged on the full-drainage linkage rod. The full-drainage linkage rod is vertically arranged on the mounting seat. The lower end of the full-drainage linkage rod is connected with the full-drainage unlocking block. The upper end of the full-drainage linkage rod is provided with a full-drainage abutting piece. The position of the half-drainage limiting protrusion on the outer side wall of the inner core tube is higher than that of the full-drainage limiting protrusion.

[0016] Further, the lifting device is pneumatic transmission, comprising a telescopic air bag and a driving part, the telescopic air bag comprises a half-row telescopic air bag and a full-row telescopic air bag, the driving part comprises a half-row driving part and a full-row driving part, the half-row telescopic air bag and the half-row driving part constitute a half-row lifting device, the half-row telescopic air bag is installed on the mounting seat of the body, the half-row telescopic air bag is connected with the half-row air passage of the air pump outside the shell through the half-row air pipe, the half-row driving part is fixed on the upper part of the half-row telescopic air bag, the half-row driving part is provided with the half-row pushing part in the middle part, the upper part or the top part of the half-row driving part is used for pushing the half-row abutting end of the inner core pipe, the half-row pushing part in the middle part of the half-row driving part is below the half-row abutting part of the upper end of the half-row connecting rod, and the half-row driving part is used for pushing the rising of the inner core pipe and the half-row connecting rod; the full-row telescopic air bag and the full-row driving part constitute a full-row lifting device, the full-row telescopic air bag is installed on the mounting seat of the body, the full-row telescopic air bag is connected with the full-row air passage of the air pump outside the shell through the full-row air pipe, the full-row driving part is fixed on the upper part of the full-row telescopic air bag, the full-row driving part is provided with the full-row pushing part in the middle part, the full-row pushing part in the middle part of the full-row driving part is below the full-row abutting part of the upper end of the full-row connecting rod, and the full-row driving part is mainly used for pushing the rising of the inner core pipe and the full-row connecting rod.

[0017] Further, the top end of the inner core pipe is out of the shell, and the inner core pipe is a hollow pipe, which is used as the overflow pipe of the drain valve.

[0018] Compared with the prior art, when water needs to be drained, the lifting device synchronously drives the rising of the inner core pipe and the connecting rod, the connecting rod drives the transverse movement of the unlocking block to insert into the lower part of the limiting protrusion, and the limiting protrusion is locked on the upper part of the unlocking block; when the water drainage is completed, the connecting rod is driven to descend by the loss of buoyancy of the float bucket, the connecting rod drives the transverse movement of the unlocking block to exit the lower part of the limiting protrusion, the limiting protrusion loses the support of the unlocking block, the inner core pipe is unlocked, the inner core pipe falls, and the water sealing piece on the inner core pipe reseals the water outlet of the base, and the drain valve is closed. Therefore, the locking or clamping of the inner core pipe of the present application does not rely on the buoyancy of the float bucket, and the volume of the float bucket can be made smaller. For such a drain valve with a large diameter, the space between the inner core pipe and the body is narrow, and in the case that the diameter of the body is limited by standards, the small float bucket design has better technical advantages. BRIEF DESCRIPTION OF DRAWINGS

[0019] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 is the assembly perspective view of the double drain valve of the closest toilet of the present application;

[0021] Figure 2 is the assembly perspective view of the body shell of the closest toilet of the present application after being removed.

[0022] Figure 3 is the cooperation schematic view of the water drainage control device of the present application when preparing to open the water drainage;

[0023] Figure 4 is the cooperation schematic view of the water drainage control device of the present application when opening is completed;

[0024] Figure 5 is the exploded schematic view of the toilet double water drainage valve of the present application;

[0025] Figure 6 is the inner core tube front view of the toilet double water drainage valve of the present application;

[0026] Figure 7 is the schematic view of the toilet double water drainage valve of the present application when preparing to open the half water drainage (the body shell is cancelled for convenience of description);

[0027] Figure 8 is the Figure 7 enlarged view of A in FIG. 6;

[0028] Figure 9 is the schematic view of the toilet double water drainage valve of the present application when opening is completed (the body shell is cancelled for convenience of description);

[0029] Figure 10 is the Figure 9 enlarged view of B in FIG. 7;

[0030] Figure 11 is the schematic view of the toilet double water drainage valve of the present application when the half water drainage is completed (the body shell is cancelled for convenience of description);

[0031] Figure 12 is the Figure 11 enlarged view of C in FIG. 8. DETAILED DESCRIPTION

[0032] The present application is introduced through the following specific examples:

[0033] As Figure 1 , 2, 3, 4, 5, the application discloses a toilet drain valve 1, including body 2, inner core tube 3, lifting device 5, drain control device 6, base 4;The base 4 is equipped with water inlet 41, water outlet 42;The body 2 includes shell 21 and mounting seat 22, body 2 is installed on the base 4 through mounting seat 22, shell 21 is installed on mounting seat 22, and shell 21 is the cavity 23 that can enter and exit water;The inner core tube 3 is placed in the cavity 23 and is vertically movably arranged on the mounting seat 22, the inner core tube 3 is equipped with abutting end 31, the lower end 33 of the inner core tube 3 is stretched out from the bottom of mounting seat 22 and is fixed sealing sheet 32, sealing sheet 32 is located above the water outlet 42 of base 4, and sealing sheet 32 is matched with the water outlet 42 of base 4 to realize the opening and closing of drainage, as shown in Figure 2 、 3 , 4, the drain control device 5 is arranged in the cavity 23, including float barrel 51, unlocking block 52, connecting rod 53, limiting protrusion 54, limiting protrusion 54 is arranged on the outer side wall of inner core tube 3, unlocking block 52 is horizontally movably arranged on mounting seat 22 in the form of sliding block and sliding groove, float barrel 51 is arranged on connecting rod 53, connecting rod 53 is vertically movably arranged on mounting seat 22 through slot 23, the lower end 531 of connecting rod 53 is connected with unlocking block 52, the upper end 532 of connecting rod 53 is equipped with abutting piece 533, lifting device 6 is placed in the cavity 23 and is arranged on mounting seat 22, the middle part of lifting device 6 is equipped with push piece 61, push piece 61 is located below the abutting piece 533 of connecting rod 53, the upper part 62 of lifting device 6 abuts against the abutting end 31 of inner core tube 3, lifting device 6 pushes the inner core tube 3 to rise, the sealing sheet 32 of the inner core tube 3 leaves the water outlet 42 of base 4 to realize the drainage of the drain valve, as shown in Figure 3 、 4 , when the inner core tube 3 rises to the lower part 541 of limiting protrusion 54 and exceeds unlocking block 52, the push piece 61 in the middle part of lifting device 6 abuts against the abutting piece 533 of connecting rod 53, lifting device 6 synchronously drives the inner core tube 3 and connecting rod 53 to rise, connecting rod 53 drives unlocking block 52 to move transversely and inserts into the lower part 541 of limiting protrusion 54, and limiting protrusion 54 is locked on the upper part of unlocking block 52, lifting device 6 is reset, the push piece 61 in the middle part of lifting device 6 is separated from the abutting piece 533 of connecting rod 53, and the upper part 62 of lifting device 6 is separated from the abutting end 31 of the inner core tube 3;When the drainage is completed, the float barrel 51 loses buoyancy and falls under the action of gravity, drives connecting rod 53 to descend, connecting rod 53 drives unlocking block 52 to move transversely and exit from the lower part 541 of limiting protrusion 54, limiting protrusion 54 loses the support of unlocking block 52, and the inner core tube 3 is unlocked, the inner core tube 3 falls, and the sealing sheet 32 on the inner core tube 3 reseals the water outlet 42 of base 4, and the drain valve is closed.

[0034] As shown in Figure 2 、 3As shown in Figure 4, the lower end 531 of the connecting rod 53 is connected to the unlocking block 52. The lower end 531 of the connecting rod 52 has a magnetic element 534 and an inclined surface 535 on its side. The magnetic element 534 can be a magnet and is located above the inclined surface 535. The end face 521 of the unlocking block 52 also has a magnetic element (not shown in the figure). When the lifting device 6 synchronously drives the inner core tube 3 and the connecting rod 53 to rise, the inclined surface 535 of the connecting rod 53 pushes against the end face 521 of the unlocking block 52, and the unlocking block 52 moves laterally and inserts into the lower part 5 of the limiting protrusion 54. 41. Lock the limiting protrusion 54 onto the upper part of the unlocking block 52. When drainage is complete, the float 51 loses buoyancy and falls under the action of gravity, which drives the linkage rod 53 to descend. The magnetic element 534 of the linkage rod 53 attracts the magnetic element of the end face 521 of the unlocking block 52, causing the unlocking block 52 to move laterally back out of the lower part 541 of the limiting protrusion 54. After the limiting protrusion 54 loses the support of the unlocking block 52, it unlocks the inner core tube 3. The inner core tube 3 falls down, and the water sealing plate 32 on the inner core tube 3 re-seals the outlet 42 of the base 4, closing the drain valve to drain.

[0035] like Figure 2 , 3 As shown in Figure 4, the unlocking block 52 is provided with a vertical clearance groove 524. The clearance groove 524 is used to allow the limiting protrusion 54 to move up and down. When the inner core tube 3 rises to the lower part 541 of the limiting protrusion 54 and exceeds the unlocking block 52, the limiting protrusion 54 disengages from the clearance groove 524. The lifting device 6 simultaneously drives the inner core tube 3 and the connecting rod 53 to rise. The connecting rod 53 drives the unlocking block 52 to move laterally so that it can be inserted into the lower part 541 of the limiting protrusion 54, thus limiting the movement. The protrusion 54 and the clearance groove 524 are misaligned, causing the limiting protrusion 54 to press against the upper part of the unlocking block 52. When drainage is complete, the float 51 loses buoyancy and falls under the action of gravity, causing the connecting rod 53 to descend. The connecting rod 53 causes the unlocking block 52 to move laterally back out of the lower part 541 of the limiting protrusion 54. The limiting protrusion 54 and the clearance groove 524 re-collide. The limiting protrusion 54, having lost the support of the unlocking block 52, unlocks the inner core tube 3, and the inner core tube 3 falls (as shown). Figure 3 The sealing plate 32 on the inner core tube 3 re-seals the outlet 42 of the base 4, and the drain valve is closed to drain the water.

[0036] The limiting protrusion mentioned above can be a triangular protrusion, a protrusion, a protrusion clip, etc. on the inner core tube in the prior art (protrusion, protrusion, protrusion, and protrusion clip are just different names, but in this field they refer to the same functional component, which is set on the inner core tube and is used to support the inner core tube and prevent the inner core tube from falling during drainage).

[0037] like Figure 2 , 3The limiting protrusion 54 shown in Figs. 4 can also be a vertical protruding rib arranged on the outer sidewall of the inner core tube 3, which is slidably arranged in the clearance slot 524. When the inner core tube 3 is lifted to the lower end of the protruding rib and exceeds the unlocking block 52, the protruding rib is separated from the clearance slot 524. The lifting device 6 synchronously drives the inner core tube 3 and the connecting rod 53 to lift, the connecting rod 53 drives the unlocking block 52 to move transversely and to be inserted into the lower part of the protruding rib. The protruding rib is misaligned with the clearance slot 524, the protruding rib is pushed on the upper part of the unlocking block 52, when the drainage is completed, the float bucket 51 loses the buoyancy and falls under the action of gravity, driving the connecting rod 53 to descend, the connecting rod 53 drives the unlocking block 52 to move transversely and to be withdrawn from the lower part of the protruding rib. The protruding rib is recombined with the clearance slot 524, the protruding rib loses the support of the unlocking block 52, the inner core tube 3 is unlocked, the inner core tube 3 falls, and the water sealing piece 31 on the inner core tube 3 reseals the water outlet 42 of the base 4, and the drainage valve is closed.

[0038] The lifting device can adopt the key lever transmission and the pull rope lever transmission for lifting the inner core tube in the prior art, and the embodiment adopts a pneumatic transmission.

[0039] As shown in Figs. Figure 1 , 2 , 3, 4, the pneumatic transmission lifting device 6 includes a telescopic air bag 63 and a driving member 64. The telescopic air bag 63 is arranged on the mounting seat 22 of the body 2, and is connected with the air pump 7 arranged outside the shell 21 of the body 2 through the air pipe 71. The driving member 64 is fixed on the upper part of the telescopic air bag 63. The driving member 64 is mainly used for pushing the inner core tube 3 and the connecting rod 53 to lift, and can be designed as a rod member or a cylinder member according to the production process and cost factors. The upper part or top 62 of the driving member 64 abuts against the abutting end 31 of the inner core tube 3. The middle part of the driving member 64 is provided with the pushing member 61, which is an annular protruding rib of the middle part of the driving member 64.

[0040] As shown in Figs. Figure 2 , 3,4, the abutting piece 533 of the upper end 532 of the linkage rod 53 is designed as a blocking piece extending transversely from the upper end 532 of the linkage rod 53 for the convenience of production and manufacture, and the blocking piece is located above the convex step. When the air pump 7 inflates the telescopic air bag 63 through the air pipe 71, the telescopic air bag 63 expands upward, driving the driving piece 64 to rise, and the upper part or top 62 of the driving piece 64 abuts against the abutting end 31 of the inner core tube 3 to drive the inner core tube 3 to rise first. When the lower end of the convex rib as the limiting convex 54 exceeds the unlocking block 52, the convex rib is disengaged from the gap 524, and the convex step on the upper part of the driving piece 64 as the pushing piece 61 reaches below the blocking piece of the upper end 532 of the linkage rod 53 as the abutting piece 533. The telescopic air bag 63 continues to expand upward, and the upper part or top 62 of the driving piece 64 abuts against the abutting end 31 of the inner core tube 3 to continue to drive the inner core tube 3 to rise. The convex step on the upper part of the driving piece 64 as the pushing piece 61 abuts against the blocking piece of the upper end 532 of the linkage rod 53 as the abutting piece 533, driving the linkage rod 53 to rise, and the inclined surface 535 of the linkage rod 53 pushes against the end surface 521 of the unlocking block 52, moving the unlocking block 52 transversely to insert into the lower part 541 of the limiting convex 54, and the convex rib as the limiting convex 54 is located on the upper part of the unlocking block 52 to achieve drainage. When the drainage is completed, the float bucket 51 loses buoyancy and falls under the action of gravity, driving the linkage rod 53 to descend, and the magnetic element 534 of the linkage rod 53 is attracted to the end surface magnetic element 522 of the unlocking block 52, moving the unlocking block 52 transversely to return and move out of the lower part 541 of the convex rib as the limiting convex 54. The convex rib loses the support of the unlocking block 52, and the inner core tube 3 is unlocked. The inner core tube 3 falls, and the water sealing piece 32 on the inner core tube 3 reseals the water outlet 41 of the base 4, closing the drain valve to drain water.

[0041] As shown in Figure 2 , 3 ,4, the linkage rod 53 is provided with a gear slot 536 on the rod body, and the float bucket 51 is provided with a clamping tooth 511. The float bucket 51 is movably fixed on the rod body of the linkage rod 53 through the cooperation of the clamping tooth 511 and the gear slot 536. The height of the float bucket 51 on the rod body of the linkage rod 53 can be adjusted to control the drainage time of the drain valve. If the float bucket 51 is clamped at a higher position on the rod body of the linkage rod 53, the water in the toilet tank is drained to this position in a shorter time, the float bucket 51 falls, the inner core tube 3 is unlocked and falls, and the water sealing piece 32 on the inner core tube 3 reseals the water outlet 42 of the base 4, closing the drain valve to drain water in advance. If the float bucket 51 is clamped at a lower position on the rod body of the linkage rod 53, the water in the toilet tank is drained to the lower position in a longer time, the float bucket 51 falls, the inner core tube 3 is unlocked and falls, and the water sealing piece 32 on the inner core tube 3 reseals the water outlet 42 of the base 4, delaying the closing of the drain valve to drain water.

[0042] As shown in Figure 1 , 2The toilet drainage valve 1 is a double drainage valve, and the abutting end 31 on the inner core pipe 3 includes a half drainage abutting end 301 and a full drainage abutting end 391. In order to facilitate production and assembly, the half drainage abutting end 301 and the full drainage abutting end 391 are symmetrically connected together through a driving ring, and the driving ring is clamped on the inner core pipe 3.

[0043] As shown in Figure 1 , 2 , 5, 6, the drainage control device 5 includes a half drainage control device 50 and a full drainage control device 59, and the half drainage control device 50 and the full drainage control device 59 are symmetrically arranged on both sides of the inner core pipe 3. The float bucket 51 includes a half float bucket 501 and a full float bucket 591. The unlocking block 52 includes a half unlocking block 502 and a full unlocking block 592. The connecting rod 53 includes a half connecting rod 503 and a full connecting rod 593. The limiting protrusion 54 includes a half limiting protrusion 504 and a full limiting protrusion 594.

[0044] As shown in Figure 5 , 6 , the half float bucket 501, the half unlocking block 502, the half connecting rod 503, and the half limiting protrusion 504 constitute the half drainage control device 50. The half limiting protrusion 504 is arranged on the outer side wall of the inner core pipe 3. The half unlocking block 502 is horizontally movably arranged on the mounting seat 22. The half float bucket 501 is arranged on the half connecting rod 503. The half connecting rod 503 is vertically movably arranged on the mounting seat 22. The lower end 5031 of the half connecting rod 503 is connected with the half unlocking block 502. The upper end 5032 of the half connecting rod 503 is provided with a half abutting piece 5033. The full float bucket 591, the full unlocking block 592, the full connecting rod 593, and the full limiting protrusion 594 constitute the full drainage control device 59. The full limiting protrusion 594 is also arranged on the outer side wall of the inner core pipe 3, and is symmetric with the half limiting protrusion 504. The full unlocking block 592 is horizontally movably arranged on the mounting seat 22. The full float bucket 591 is arranged on the full connecting rod 593. The full connecting rod 593 is vertically movably arranged on the mounting seat 22. The lower end 5931 of the full connecting rod 593 is connected with the full unlocking block 592. The upper end 5932 of the full connecting rod 593 is provided with a full abutting piece 5933. The half drainage control device 50 and the full drainage control device 59 are completely same in main structure and function, except that the position H of the lower part 5041 of the half limiting protrusion 504 on the outer side wall of the inner core pipe 3 is higher than the position h of the lower part 5941 of the full limiting protrusion 594 on the outer side wall of the inner core pipe 3. This design is to achieve the requirement that the half drainage time is shorter than the full drainage time.

[0045] As shown in Figure 2 , 5, 6, the lifting device 6 also corresponds to include half row lifting device 60, full row lifting device 69, the telescopic air bag 63 includes half row telescopic air bag 603, full row telescopic air bag 693, the drive member 64 includes half row drive member 604, full row drive member 694, the half row telescopic air bag 603, half row drive member 604 constitute half row lifting device 60, the half row telescopic air bag 603 is installed on the mounting seat 22, half row telescopic air bag 603 through half row air pipe 701 and placed in the shell outside the air pump 7 half row airway access, the half row drive member 604 is fixed in the upper portion of half row telescopic air bag 603, half row drive member 604 of the middle part is provided with the half row push piece 601, half row drive member 604 of the upper portion or top 602 piece for pushing the half row abutting end 5033 of the inner core tube 3, the half row push piece 601 of the middle part of half row drive member 604 is located below the half row abutting piece 5033 of the upper end 5032 of the half row linkage rod 503, the half row drive member 604 is mainly used to push the inner core tube 3 and the rising of half row linkage rod 503.

[0046] As Figure 2 , 5 , 6, the full row telescopic air bag 693, full row drive member 694 constitute full row lifting device 69, the full row telescopic air bag 693 is installed on the mounting seat 22, full row telescopic air bag 693 through full row air pipe (not shown in the figure) and placed in the shell 21 outside the air pump 7 full row airway access, the full row drive member 694 is fixed in the upper portion of full row telescopic air bag 693, the full row drive member 694 of the middle part is provided with the full row push piece 691, the full row push piece 691 of the middle part of full row drive member 694 is located below the full row abutting piece 5933 of the upper end 5932 of the full row linkage rod 593, the full row drive member 694 is mainly used to push the inner core tube 3 and the rising of full row linkage rod 593.

[0047] As Figure 1 , 2 , 5, As shown, when half-row drainage is needed, the air pump 7 inflates the half-row telescopic air bag 603 through the half-row air pipe 701, the half-row telescopic air bag 603 expands upward, driving the half-row driving part 604 to rise, the upper part or top 602 of the half-row driving part 604 first drives the inner core pipe 3 to rise against the half-row abutting end 301 of the inner core pipe 3, when the half-row protruding rib as the half-row limiting protrusion 504 exceeds the half-row unlocking block 502, the half-row protruding rib is separated from the half-row accommodation groove 5024, the half-row protruding step as the half-row pushing part 601 on the half-row driving part 604 reaches below the half-row blocking piece as the half-row abutting part 5033 on the half-row connecting rod 503, the half-row telescopic air bag 603 continues to expand upward, the half-row driving part 601 continues to drive the inner core pipe 3 to rise, the half-row protruding step as the half-row pushing part 601 on the half-row driving part 604 abuts against the half-row blocking piece, driving the half-row connecting rod 503 to rise, the inclined surface 5035 of the half-row connecting rod 503 pushes against the end surface 5022 of the half-row unlocking block 502 (as shown in Figure 9 ), the half-row unlocking block 502 moves transversely to insert into the lower part 5041 of the half-row limiting protrusion 504 using the half-row protruding rib, the half-row protruding rib is topped on the upper part of the half-row unlocking block 502, achieving half-row drainage, the half-row air passage of the air pump 7 outside the shell is opened, the half-row telescopic air bag 603 is deflated to contract and descend to reset through the half-row air pipe 701, the half-row pushing part 601 is separated from the abutment against the half-row abutting part 5033 of the half-row connecting rod 503 (as shown in Figure 10 ), the upper part 602 of the half-row driving part 604 is separated from the abutment against the half-row abutting end 301 of the inner core pipe 3, when the half-row drainage is completed, as shown in Figure 11 , 12 , the half-row float bucket 501 loses buoyancy and falls under the action of gravity, driving the half-row connecting rod 503 to descend, the half-row magnetic element 5034 of the half-row connecting rod 503 is attracted to the half-row end surface magnetic element 5023 of the half-row unlocking block 502 (as shown in Figure 12 ), driving the half-row unlocking block 502 to move transversely back, exiting the lower part 5041 of the half-row limiting protrusion 504 using the half-row protruding rib, the half-row protruding rib loses the support of the half-row unlocking block 502, unlocking the inner core pipe 3, the inner core pipe 3 falls, the water sealing piece 32 on the inner core pipe 3 reseals the water outlet 42 of the base 4, closing the drainage valve half-row drainage.

[0048] Similarly, full-row drainage and half-row drainage have the same principle, only a brief description is made, as shown in Figure 1 , 5, 6, when the full drainage is needed, the air pump 7 inflates the full expansion air bag 693 through the full air pipe (not shown), the full expansion air bag 693 expands upward, driving the full driving part 694 to rise, the upper part or top 692 of the full driving part 694 first drives the inner core pipe 3 to rise, when the lower end of the full protruding rib as the full limiting protrusion 594 exceeds the full unlocking block 592, the full protruding rib is out of the full giving way slot 5924, the full protruding step as the full pushing part 691 of the full driving part 694 reaches below the full stop piece as the full abutting part 5933 of the full linkage lever 593, the full expansion air bag 693 continues to expand upward, the full driving part 694 continues to drive the inner core pipe 3 to rise, the full protruding step as the full pushing part 691 of the full driving part 694 abuts against the full stop piece, driving the full linkage lever 593 to rise, the inclined surface 5935 of the full linkage lever 593 pushes against the end surface 5921 of the full unlocking block 592, the full unlocking block 592 moves laterally to insert into the lower part 5941 of the full limiting protrusion 594 with the full protruding rib, and the full protruding rib is stopped on the upper part of the full unlocking block 592, achieving full drainage, the full air passage of the air pump 7 outside the shell is opened, the full expansion air bag 693 is deflated to shrink and drop back through the full air pipe, the full pushing part 691 is out of abutting against the full abutting part 5933 of the full linkage lever 593, and the upper part 692 of the full driving part 694 is out of abutting against the full abutting end 391 of the inner core pipe 3, when the full drainage is completed, the full floating barrel 591 falls under the action of gravity, driving the full linkage lever 593 to drop, the full magnetic element 5934 of the full linkage lever 593 is attracted to the full end surface magnetic element (not shown) of the full unlocking block 592, driving the full unlocking block 592 to move laterally and return, exiting the lower part of the full protruding rib, and the full protruding rib loses the support of the full unlocking block 592, unlocking the inner core pipe 3, the inner core pipe 3 falls, the water sealing piece 32 on the inner core pipe 3 reseals the water outlet 42 of the base 4, and the drainage valve is closed.

[0049] Because the inner core pipe locking or clamping is achieved by moving the linkage lever locking block through the lifting device, not relying on the buoyancy of the floating barrel itself, the floating barrel of the present case, including the full drainage floating barrel and the half drainage floating barrel, can be made smaller, so that the drainage valve body can be made smaller. For a large drainage valve with a diameter of 3 inches, the inner core pipe with an overflow pipe is also large in diameter, and the space between the inner core pipe and the body is small. In the case of the diameter of the body being limited by standards, the small floating barrel design has better advantages.

[0050] Therefore, as shown in Figure 1 , the top end of the inner core pipe 3 extends out of the shell, the inner core pipe 3 is a hollow pipe, which serves as the overflow pipe of the drainage valve, eliminating the need for an overflow pipe installed on the outside of the base 4 in the current technology.

[0051] The structural features among the above embodiments can be combined with each other to obtain other embodiments without causing contradictory conflicts, and the new embodiments obtained should also belong to the content protected by the application without departing from the creative spirit of the application.

Claims

1. A toilet tank drain valve, characterized in that: The device includes a main body, an inner core tube, a lifting device, a drainage control device, and a base. The base has an inlet and an outlet. The main body includes a shell and a mounting base. The main body is mounted on the base via the mounting base, and the shell is mounted on the mounting base. The shell is a cavity that allows water to enter and exit. The inner core tube is placed inside the cavity and vertically movably mounted on the mounting base. The inner core tube has a stop end, and its lower end extends from the bottom of the mounting base and fixes a water-sealing plate. The water-sealing plate is located above the outlet of the base and cooperates with the outlet to open and close the drainage. The drainage control device is located inside the cavity and includes a float, an unlocking block, a connecting rod, and a limiting protrusion. The limiting protrusion is located on the outer wall of the inner core tube. The unlocking block is horizontally movably mounted on the mounting base. The float is mounted on the connecting rod, which is vertically movably mounted on the mounting base. The lower end of the connecting rod is connected to the unlocking block, and the upper end of the connecting rod has a stop. The lifting device is placed inside the cavity and mounted on the mounting base. The middle of the lifting device has a push... The pusher is located below the abutment of the linkage rod. The upper part of the lifting device abuts against the abutment end of the inner core tube. The lifting device rises, pushing the inner core tube upward. The water sealing plate of the inner core tube leaves the outlet of the base, allowing the drain valve to drain water. When the inner core tube rises to the lower part of the limit protrusion and exceeds the unlocking block, the pusher in the middle of the lifting device abuts against the abutment of the linkage rod. The lifting device simultaneously drives the inner core tube and the linkage rod to rise. The linkage rod drives the unlocking block to move laterally and insert into the lower part of the limit protrusion, locking the limit protrusion into the unlocking block. At the top, the lifting device descends and resets, the pusher in the middle of the lifting device disengages from the abutment of the connecting rod, and the upper part of the lifting device disengages from the abutment of the inner core tube; when drainage is complete, the float loses buoyancy and falls under the action of gravity, driving the connecting rod to descend, and the connecting rod drives the unlocking block to move laterally and exit the lower part of the limiting protrusion. When the limiting protrusion loses the support of the unlocking block, it unlocks the inner core tube, the inner core tube falls, and the water sealing plate on the inner core tube re-seals the outlet of the base, closing the drain valve to drain; The connection between the lower end of the linkage rod and the unlocking block includes a magnetic element and an inclined surface on the side of the lower end of the linkage rod. The magnetic element is located above the inclined surface. The end face of the unlocking block is also provided with a magnetic element. When the lifting device synchronously drives the inner core tube and the linkage rod to rise, the inclined surface of the linkage rod pushes against the end face of the unlocking block. The unlocking block moves laterally and inserts into the lower part of the limiting protrusion, locking the limiting protrusion on the upper part of the unlocking block. When the drainage is completed, the float loses buoyancy and falls under the action of gravity, driving the linkage rod to descend. The magnetic element of the linkage rod attracts the magnetic element on the end face of the unlocking block, causing the unlocking block to move laterally back out of the lower part of the limiting protrusion, unlocking the inner core tube. The top end of the inner core tube extends outside the shell. The inner core tube is a hollow tube, which serves as the overflow pipe of the drain valve.

2. A toilet tank drain valve as described in claim 1, characterized in that: The lifting device is pneumatically driven and includes a telescopic airbag and a driving component. The telescopic airbag is mounted on the mounting base of the main body. The telescopic airbag is connected to an air pump located outside the housing of the main body through an air pipe. The driving component is fixed to the upper part of the telescopic airbag. The upper part or top of the driving component abuts against the abutting end of the inner core tube. The middle part of the driving component is provided with the pusher.

3. A toilet tank drain valve as described in claim 2, characterized in that: The unlocking block is provided with a vertical clearance groove, which is used to allow the limiting protrusion to move up and down. When the inner core tube rises to the lower part of the limiting protrusion and exceeds the unlocking block, the limiting protrusion disengages from the clearance groove. The lifting device simultaneously drives the inner core tube and the connecting rod to rise. The connecting rod drives the unlocking block to move laterally so as to insert into the lower part of the limiting protrusion. The limiting protrusion and the clearance groove are misaligned, and the limiting protrusion is pushed against the upper part of the unlocking block. When the drainage is completed, the float loses buoyancy and falls under the action of gravity, which drives the connecting rod to descend. The connecting rod drives the unlocking block to move laterally back and exit the lower part of the limiting protrusion. The limiting protrusion and the clearance groove re-re-combine, and the inner core tube is unlocked.

4. A toilet tank drain valve as described in claim 3, characterized in that: The limiting protrusion is a vertically arranged rib on the outer side wall of the inner core tube. The rib slides in the relief groove. When the inner core tube rises to the lower part of the rib and exceeds the unlocking block, the rib disengages from the relief groove. The lifting device simultaneously drives the inner core tube and the connecting rod to rise. The connecting rod drives the unlocking block to move laterally and insert into the lower part of the rib. The rib and the relief groove are misaligned, and the rib is pushed against the upper part of the unlocking block. When the drainage is completed, the float loses buoyancy and falls under the action of gravity, driving the connecting rod to descend. The connecting rod drives the unlocking block to move laterally back and exit the lower part of the rib. The rib and the relief groove re-combine. The rib loses the support of the unlocking block and unlocks the inner core tube.

5. A toilet tank drain valve as described in claim 4, characterized in that: The pusher is a raised step with an annular protrusion in the middle of the drive component. The abutment at the upper end of the linkage rod is a laterally extending baffle. The baffle is located above the raised step. When the air pump inflates the telescopic airbag through the air pipe, the telescopic airbag expands upward, driving the drive component to rise. The upper part or top of the drive component abuts against the abutment end of the inner core tube, first driving the inner core tube to rise. When the rib, which acts as a limiting protrusion, exceeds the unlocking block, the rib disengages from the clearance groove. The raised step on the drive component, which acts as the pusher, reaches below the baffle at the upper end of the linkage rod, which acts as the abutment. The telescopic airbag continues to expand upward, and the upper part or top of the drive component abuts against the abutment end of the inner core tube. The end continues to drive the inner core tube upward. The protruding step on the drive component, which acts as a pusher, abuts against the baffle plate at the upper end of the connecting rod, which acts as a stopper. This causes the connecting rod to rise, and the inclined surface of the connecting rod pushes against the end face of the unlocking block. The unlocking block moves laterally and inserts into the lower part of the limiting protrusion. The rib that acts as the limiting protrusion then presses against the upper part of the unlocking block, thus achieving drainage. When drainage is complete, the float loses buoyancy and falls under the action of gravity, causing the connecting rod to descend. The magnetic element of the connecting rod attracts the magnetic element on the end face of the unlocking block, causing the unlocking block to move laterally back out of the lower part of the rib that acts as the limiting protrusion. The rib loses the support of the unlocking block, thus unlocking the inner core tube.

6. A toilet tank drain valve as described in any one of claims 1 to 5, characterized in that: The toilet tank drain valve is a dual drain valve. The abutment end on the inner core tube includes a half-drain abutment end and a full-drain abutment end. The drain control device includes a half-drain drain control device and a full-drain drain control device, symmetrically arranged on both sides of the inner core tube. The float includes a half-drain float and a full-drain float. The unlocking block includes a half-drain unlocking block and a full-drain unlocking block. The linkage rod includes a half-drain linkage rod and a full-drain linkage rod. The limiting protrusion includes a half-drain limiting protrusion and a full-drain limiting protrusion. The half-drain float, half-drain unlocking block, half-drain linkage rod, and half-drain limiting protrusion constitute the half-drain drain control device. The half-drain limiting protrusion is located on the outer wall of the inner core tube. The device is laterally movable on the mounting base. A half-row float is mounted on a half-row connecting rod, which is vertically movable on the mounting base. The lower end of the half-row connecting rod is connected to a half-row unlocking block, and the upper end of the half-row connecting rod has a half-row abutment. The full-row float, full-row unlocking block, full-row connecting rod, and full-row limiting protrusion constitute a full-drainage control device. The full-drain limiting protrusion is also located on the outer wall of the inner core tube. The full-drain unlocking block is laterally movable on the mounting base. The full-drain float is mounted on the full-drain connecting rod, which is vertically movable on the mounting base. The lower end of the full-drain connecting rod is connected to the full-drain unlocking block, and the upper end of the full-drain connecting rod has a full-drain abutment. The half-row limiting protrusion is positioned higher on the outer wall of the inner core tube than the full-drain limiting protrusion.

7. A toilet tank drain valve as described in claim 6, characterized in that: The lifting device is pneumatically driven, including a telescopic airbag and a driving component. The telescopic airbag includes a half-row telescopic airbag and a full-row telescopic airbag. The driving component includes a half-row driving component and a full-row driving component. The half-row telescopic airbag and the half-row driving component constitute a half-row lifting device. The half-row telescopic airbag is mounted on a mounting base of the main body. The half-row telescopic airbag is connected to the half-row air passage of an air pump located outside the housing through a half-exhaust pipe. The half-row driving component is fixed to the upper part of the half-row telescopic airbag. A half-row pusher is provided in the middle of the half-row driving component. The upper or top part of the half-row driving component is used to push against the half-row abutment end of the inner core tube. The half-row drive component, located below the half-row abutment at the upper end of the half-row linkage, is used to push the inner core tube and the half-row linkage upwards. The full-row telescopic airbag and the full-row drive component constitute the full-row lifting device. The full-row telescopic airbag is mounted on the mounting base of the main body and is connected to the full-row air passage of the air pump located outside the housing through the full-row exhaust pipe. The full-row drive component is fixed to the upper part of the full-row telescopic airbag, and the full-row push component is located in the middle of the full-row drive component. The full-row push component in the middle of the full-row drive component is located below the full-row abutment at the upper end of the full-row linkage. The full-row drive component is mainly used to push the inner core tube and the full-row linkage upwards.

Images