CN218468326U

CN218468326U - Micro-resistance slow-closing butterfly check valve capable of preventing damage

Info

Publication number: CN218468326U
Application number: CN202222736747.6U
Authority: CN
Inventors: 张萍; 孔梦云; 陶煦; 干健
Original assignee: WANJIANG CENTER FOR DEVELOPMENT OF EMERGING INDUSTRIAL TECHNOLOGY
Current assignee: WANJIANG CENTER FOR DEVELOPMENT OF EMERGING INDUSTRIAL TECHNOLOGY
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-02-10
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a micro resistance slow-closing butterfly check valve of damage prevention relates to goods transportation field, including valve body, counter weight hammer arm and counter weight hammer, still including pressing down the pole and sliding the setting and being in L shape locating piece and the L shape slider in the collar slide chamber, all be provided with the latch on L shape locating piece and the L shape slider, just the latch with rotate the setting through the pivot and be in gear tooth joint in the slide chamber, the grafting end of L shape locating piece is located be provided with positioning groove on the valve rod and peg graft, L shape slider with it is fixed to press the pole, the collar internal fixation has the mounting panel, just the mounting panel with through reset spring fixed connection between the L shape slider. This valve body makes things convenient for the installation and the dismantlement of counter weight hammer arm and valve rod, and convenient operation is swift, can dismantle the counter weight hammer arm from the valve body and get off and transport separately, reduces occupation space, avoids the counter weight hammer arm of slope installation on the valve body to receive the collision simultaneously and leads to bending deformation.

Description

Damage-proof micro-resistance slow-closing butterfly check valve

Technical Field

The utility model relates to the technical field of valves, in particular to micro-resistance slow-closing butterfly check valve of damage prevention.

Background

The micro-resistance slow-closing butterfly check valve is mainly used at the outlets of pressure output water pumps of industrial circulating water supply and drainage and sewage treatment plants and high-rise residential buildings and high-rise hotels to prevent media in a pipe network from flowing backwards. And the destructive water hammer is automatically eliminated, so that the water pump and the pipeline are not damaged. The valve is designed by fully considering the requirements of the use environment and mainly comprises a valve body, a butterfly plate, a buffer device and the like. The product has the characteristics of novel structure, small volume, small fluid resistance, stable operation, reliable sealing, wear resistance, good buffer performance and the like, and is the best product for industrial water and urban sewage discharge.

The existing micro-resistance slow-closing butterfly check valve (as shown in figure 1) is added with a counterweight arm 4 and a counterweight hammer 5 on the linkage of a valve clack 2 and a valve rod 3, when no medium passes through the valve body 1, the parts such as the valve clack 2, the counterweight hammer arm 4, the counterweight hammer 5 and the like rotate around the valve rod 3 under the action of gravity to enable the valve clack 2 to abut against a valve seat to form sealing, so that the purpose of closing the valve is achieved, when the medium passes through the valve body, the medium pushes the parts such as the valve clack 2, the counterweight hammer arm 4, the counterweight hammer 5 and the like to rotate around the valve rod 3 to enable the valve clack 2 to separate from the valve seat to remove the sealing, so that the purpose of opening the valve is achieved, and the counterweight hammer arm 4 of the existing valve body 1 has the following problems:

1. when the valve is in a closed state, the counterweight hammer arm 4 of the valve body 1 is arranged in an inclined state and exceeds the end face of the valve body 1 by a certain distance, the counterweight hammer arm 4 is arranged in a protruding manner, so that the counterweight hammer arm occupies a large space during transportation, and the protruding counterweight hammer arm 4 is easy to collide and damage during transportation or lifting;

2. the existing counterweight hammer arm 4 is generally fixed and limited on the outer end of the valve rod 3 through bolts, so that the assembly and disassembly are not convenient enough.

Therefore, the application provides a damage-proof micro-resistance slow-closing butterfly check valve to meet the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a little of damage prevention slowly closes butterfly check valve, the utility model discloses it is rational in infrastructure, utilize the cooperation of pressing down depression bar, L shape slider, gear, L shape locating piece and reset spring, realize installing in the dismantlement of counter weight hammer arm and valve rod, convenient operation is swift, can dismantle the counter weight hammer arm from the valve body and get off and carry out independent transportation separately, can reduce occupation space, avoids the counter weight hammer arm of slope installation on the valve body to receive the collision simultaneously and leads to bending deformation.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a butterfly check valve is slowly closed to micro-resistance of damage prevention, is including installing the valve body, install counter weight hammer arm on the valve rod of valve body, install the counter weight hammer on the counter weight hammer arm, counter weight hammer arm cup joints through installation ring on the valve rod, still including running through counter weight hammer arm press the depression bar and slide the setting and be in L shape locating piece and the L shape slider in the installation ring sliding chamber, all be provided with the latch on L shape locating piece and the L shape slider, just the latch with rotate through the pivot and set up gear toothing in the sliding chamber, the grafting end of L shape locating piece is located be provided with positioning groove on the valve rod and peg graft, L shape slider fixed mounting be in press the depression bar extend to on the tip in the sliding chamber, the sliding chamber internal fixation has the mounting panel, just the mounting panel with through reset spring fixed connection between the L shape slider.

Preferably, the positioning grooves are provided in two, one of which positions the counterweight hammer arm in an inclined state and the other of which positions the counterweight hammer arm vertically downward.

Preferably, the pressing rod is located a blocking ring is fixedly sleeved on the end portion of the sliding cavity, and the outer end of the blocking ring is located in a blocking cavity formed in the inner cavity of the pressing rod.

Preferably, the movable distance between the upper end of the stop ring and the inner wall of the stop cavity is the maximum compression distance for keeping the elasticity of the return spring unchanged.

Preferably, the pressing rod penetrates through the outer end of the counterweight arm, a finger contact plate with a diameter smaller than that of the counterweight arm is fixed on the outer end of the counterweight arm, and an elastic buffer pad is bonded on the finger contact plate.

To sum up, the utility model discloses a technological effect and advantage:

1. the utility model has reasonable structure, realizes the installation and the disassembly of the counterweight hammer arm and the valve rod by utilizing the matching of the pressing rod, the L-shaped sliding block, the gear, the L-shaped positioning block and the reset spring, has convenient and rapid operation, can disassemble the counterweight hammer arm from the valve body for respective independent transportation, reduces the occupied space, and simultaneously avoids the counterweight hammer arm which is obliquely installed on the valve body from being collided to cause bending deformation;

2. the utility model discloses in, positioning groove is provided with two, and one can be with counter weight hammer arm location tilt state, and another is with its vertical downward positioning, plays equally and reduces occupation space and prevents that counter weight hammer arm from receiving the effect of collision damage, need not to transport counter weight hammer arm and valve body alone simultaneously, causes losing of counter weight hammer arm when avoiding transporting alone.

3. The utility model discloses in, be provided with the barrier ring and block the chamber, the upper end of barrier ring and the biggest compression distance that blocks between the intracavity wall can prevent that reset spring from being leaded to it to take place irreversible deformation by overcompression or tensile for keeping the unchangeable biggest compression distance of reset spring elasticity, improve reset spring's life.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a prior art valve body;

FIG. 2 is a schematic view of the sectional structure of the valve body according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is a schematic view of a partial front cross-sectional structure of the counterweight hammer arm shown in fig. 2 according to the present invention;

fig. 5 is a schematic left sectional view of the valve stem of fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a valve flap; 3. a valve stem; 4. a counterweight hammer arm; 5. a counterweight hammer; 6. a mounting ring; 7. a pressing lever; 8. an L-shaped slider; 9. an L-shaped positioning block; 10. clamping teeth; 11. a gear; 12. mounting a plate; 13. a return spring; 14. a blocking ring; 15. a barrier chamber; 16. a finger contacts the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1-4, a damage-proof micro-resistance slow-closing butterfly check valve comprises a valve body 1, a counterweight arm 4 is installed on a valve rod 3 of the valve body 1, a counterweight hammer 5 is installed on the counterweight arm 4, the counterweight arm 4 is sleeved on the valve rod 3 through an installation ring 6, the valve further comprises a pressing rod 7 penetrating through the counterweight arm 4, an L-shaped positioning block 9 and an L-shaped sliding block 8 which are arranged in a sliding cavity of the installation ring 6 in a sliding mode, clamping teeth 10 are arranged on the L-shaped positioning block 9 and the L-shaped sliding block 8, the clamping teeth 10 are in toothed connection with a gear 11 which is arranged in the sliding cavity in a rotating mode through a rotating shaft, a positioning groove is arranged on the valve rod 3 at the insertion end of the L-shaped positioning block 9 in an insertion mode, the L-shaped sliding block 8 is fixedly installed on the end portion, extending to the sliding cavity, an installation plate 12 is fixed in the sliding cavity, and the installation plate 12 is fixedly connected with the L-shaped sliding block 8 through a reset spring 13, before the device is transported or hoisted, the counterweight hammer arm 4 can be detached from the valve rod 3, the counterweight hammer arm 4 is held firstly, the pressing rod 7 is pressed by fingers, the pressing rod 7 drives the L-shaped slide block 8 to do compression motion for extruding the reset spring 13, the L-shaped slide block 8 can drive the L-shaped positioning block 9 to do motion opposite to the motion direction of the L-shaped slide block 8 through the gear 11, the insertion end of the L-shaped positioning block 9 can be moved out of the positioning groove, the counterweight hammer arm 4 can be detached from the counterweight hammer arm 4 directly and independently transported at the moment, the occupied space is reduced, meanwhile, the counterweight hammer arm 4 obliquely installed on the valve body 1 is prevented from being collided to cause bending deformation, the detachment is convenient, after the valve body 1 is transported to a designated place and installed with a pipeline, the counterweight hammer arm 4 is installed, the pressing rod 7 is pressed, the L-shaped positioning block 9 is retracted into the sliding cavity, the installation ring 6 is sleeved with the valve rod 3, the pressing rod 7 is loosened, the mounting ring 6 rotates around the axis of the valve rod 3, the L-shaped positioning block 9 is connected with the positioning groove in an inserting mode through the elastic action of the return spring 11, the counterweight hammer arm 4 and the valve rod 3 are mounted, and operation is convenient and simple.

It should be noted that the insertion end of the L-shaped positioning block 9 is provided with an arc-shaped guide portion for facilitating the guiding insertion of the L-shaped positioning block 9 and the positioning groove.

As a preferred embodiment in this embodiment, as shown in fig. 5, two positioning grooves are provided, one positioning groove can position the counterweight hammer arm 4 in an inclined state, and the other positioning groove positions the counterweight hammer arm 4 vertically downward, when the counterweight hammer arm 4 is detached, after the insertion end of the L-shaped positioning block 9 moves out of the positioning groove, the mounting ring 6 is rotated downward around the axis of the valve rod 3 by the counterweight hammer arm 4, after the L-shaped positioning block 9 has moved a small distance, that is, after the L-shaped positioning block 9 has completely deviated from the positioning groove provided above, the pressing rod 7 is released, the mounting ring 6 is rotated downward, the insertion end of the L-shaped positioning block 9 is inserted into the positioning groove by the elastic force of the return spring 13, and at this time, the counterweight hammer arm 4 is vertically downward and arranged in parallel to the valve body 1, which also plays a role of reducing the occupied space and preventing the counterweight hammer arm 4 from being damaged by collision, and at the same time, the hammer arm 4 does not need to be transported separately from being lost when transported separately, and when in use, the counterweight hammer arm 4 can be rotationally mounted in an inclined state.

As a preferred implementation manner in this embodiment, as shown in fig. 3, a blocking ring 14 is fixedly sleeved on the end portion of the pressing rod 7 located in the sliding cavity, and the outer end of the blocking ring 14 is located in a blocking cavity 15 provided in the inner cavity of the pressing rod 7, and the blocking ring 14 blocks the pressing rod 7 from moving to stretch the return spring 13 outwards, so as to avoid the irreversible deformation of the return spring 13 caused by over-stretching of the return spring 13, and improve the service life of the return spring 13.

In this embodiment, as shown in fig. 3, the movable distance between the upper end of the blocking ring 14 and the inner wall of the blocking cavity 15 is the maximum compression distance that keeps the elasticity of the return spring 13 unchanged, so as to prevent the pressing rod 7 from compressing the return spring 13 excessively to cause irreversible deformation, and improve the service life of the return spring 13.

As a preferred embodiment in this embodiment, as shown in fig. 4, a finger contact plate 16 having a smaller diameter than the counterweight arm 4 is fixed to the outer end of the pressing rod 7 penetrating through the counterweight arm 4, so as to avoid affecting the installation of the counterweight hammer 5 and the counterweight arm 4, and an elastic cushion pad is bonded to the finger contact plate 16, so that the pressure action between the pressing rod 7 and the finger can be buffered by the elastic cushion pad, thereby improving the comfort of use.

This practical theory of operation: before the device is transported or hoisted, the counterweight hammer arm 4 can be detached from the valve rod 3, the counterweight hammer arm 4 is held firstly, the pressing rod 7 is pressed by fingers, the pressing rod 7 drives the L-shaped sliding block 8 to do compression motion for extruding the reset spring 13, the L-shaped sliding block 8 can drive the L-shaped positioning block 9 to do motion opposite to the motion direction of the L-shaped sliding block 8 through the gear 11, the insertion end of the L-shaped positioning block 9 can be moved out of the positioning groove, the counterweight hammer arm 4 can be directly detached for transportation at the moment, the occupied space is reduced, meanwhile, the counterweight hammer arm 4 obliquely installed on the valve body 1 is prevented from being collided to cause bending deformation, the detachment is convenient, when the counterweight hammer arm 4 is transported to a designated place and the valve body 1 and a pipeline are installed, the counterweight hammer arm 4 is installed, the pressing rod 7 is pressed, the L-shaped positioning block 9 is retracted into the sliding cavity, the installation ring 6 is sleeved with the valve rod 3, the pressing rod 7 is loosened, the installation ring 6 rotates around the axis of the L-shaped positioning block 9, the L-shaped positioning hammer arm 9 is inserted into the insertion groove through the elastic action of the reset spring 11, the positioning spring, the valve rod 4 is convenient to install the valve rod 3, and the simple operation of the installation of the valve rod is convenient to install;

when the counterweight hammer arm 4 is disassembled, after the insertion end of the L-shaped positioning block 9 is moved out of the positioning groove, the mounting ring 6 is enabled to do downward rotary motion around the axis of the valve rod 3 through the counterweight hammer arm 4, after the L-shaped positioning block 9 moves a small distance, the pressing rod 7 is loosened after the L-shaped positioning block 9 completely deviates from the positioning groove arranged above, the mounting ring 6 continues to rotate downwards, the insertion end of the L-shaped positioning block 9 is plugged into the positioning groove through the elastic force of the return spring 13, at the moment, the counterweight hammer arm 4 is vertically downwards arranged in parallel with the valve body 1, the effects of reducing the occupied space and preventing the counterweight hammer arm 4 from being damaged due to collision are also achieved, meanwhile, the counterweight hammer arm 4 does not need to be transported separately from the valve body 1, and the counterweight hammer arm 4 is prevented from being lost during separate transportation;

the blocking ring 14 and the blocking cavity 15 are arranged, the movable distance between the upper end of the blocking ring 14 and the inner wall of the blocking cavity 15 is the maximum compression distance for keeping the elasticity 13 of the return spring unchanged, the return spring 13 can be prevented from being irreversibly deformed due to over compression or stretching, and the service life of the return spring 13 is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a butterfly check valve is slowly closed to micro-resistance of damage prevention, is including installing valve body (1), install counter weight hammer arm (4) on valve rod (3) of valve body (1), install counter weight hammer (5), its characterized in that on counter weight hammer arm (4): the counterweight hammer arm (4) is connected to the valve rod (3) in a sleeved mode through the mounting ring (6) in a sleeved mode, the counterweight hammer arm further comprises a pressing rod (7) penetrating through the counterweight hammer arm (4) and an L-shaped positioning block (9) and an L-shaped sliding block (8) which are arranged in a sliding cavity of the mounting ring (6) in a sliding mode, clamping teeth (10) are arranged on the L-shaped positioning block (9) and the L-shaped sliding block (8) respectively, the clamping teeth (10) are in toothed connection with a gear (11) which is arranged in the sliding cavity in a rotating mode through a rotating shaft, the inserting end of the L-shaped positioning block (9) is located on the valve rod (3) and is provided with a positioning groove for inserting connection, the L-shaped sliding block (8) is fixedly mounted on the end portion, extending to the pressing rod (7) in the sliding cavity, a mounting plate (12) is fixed in the sliding cavity, and the mounting plate (12) is fixedly connected with the L-shaped sliding block (8) through a reset spring (13).

2. The damage resistant micro resistive slow closing butterfly check valve of claim 1, wherein: the two positioning grooves are arranged, one positioning groove can position the counterweight hammer arm (4) in an inclined state, and the other positioning groove can position the counterweight hammer arm vertically downwards.

3. The damage resistant micro resistive slow closing butterfly check valve of claim 1, wherein: the pressing rod (7) is located a blocking ring (14) is fixedly sleeved on the end part in the sliding cavity, and the outer end of the blocking ring (14) is located in a blocking cavity (15) formed in the inner cavity of the pressing rod (7).

4. A damage-resistant slow-closing butterfly check valve as claimed in claim 3, wherein: the movable distance between the upper end of the blocking ring (14) and the inner wall of the blocking cavity (15) is the maximum compression distance for keeping the elasticity of the return spring (13) unchanged.

5. The damage resistant micro resistive slow closing butterfly check valve of claim 1, wherein: the pressing rod (7) penetrates through the outer end of the counterweight hammer arm (4) and is fixedly provided with a finger contact plate (16) with the diameter smaller than that of the counterweight hammer arm (4), and an elastic buffer pad is bonded on the finger contact plate (16).