Device for preventing check valve of recycling water pump from being jammed

Abstract

The utility model relates to the technical field of recycling water pumps, in particular to a device for preventing a check valve of a recycling water pump from being jammed, which comprises a valve body, an input end, an output end and an overhaul end are respectively arranged on the valve body, a sealing cover is arranged at the overhaul end of the valve body, the sealing cover is connected with the valve body through a plurality of bolt components, and the valve body is connected with the output end of the valve body. A valve rod capable of rotating is arranged in the valve body, a valve clack is arranged on the valve rod, the valve clack can abut against the valve body, an abutting block is arranged on the valve body, and an anti-jamming mechanism capable of moving is arranged on the abutting block. According to the anti-jamming mechanism, the situation that the valve clack cannot be reset due to the fact that the valve clack and the valve body are jammed when the valve clack is turned over due to large force, and then the influence on waste steam recovery work is caused can be prevented, meanwhile, the valve clack and the valve body can be effectively protected, and the service life of the valve clack is prolonged. And therefore, the service lives of the valve clack and the valve body are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water recovery pumps, in particular to a device for preventing a check valve of a water recovery pump from being stuck. Background Art

[0002] The waste steam recovery pump is a water pump used to recover steam condensate. In the steam heating system, after the steam releases heat and condenses in the heat-using equipment, the condensate flows out of the heat-using equipment and returns to the piping system and equipment of the heat source through the steam trap and the condensate pipe. The check valve cannot be opened when the main pipe pressure is higher than the pump outlet pressure; the check valve can only be opened when the pump outlet pressure is higher than the main pipe pressure. Usually, the waste steam recovery pump is used in the steam turbine extraction and high-pressure cylinder exhaust pipes. The setting of the check valve can prevent steam or condensate from flowing back into the steam turbine, thereby protecting the steam turbine.

[0003] When the check valve at the outlet of the waste steam recovery pump rotates back and forth, the check valve may rush out of the stroke and cause jamming, affecting the safe and economical operation of the waste steam recovery device. Utility Model Content

[0004] In response to the above-mentioned problem, a device is provided for preventing the check valve of the recovery water pump from getting stuck. The anti-jamming mechanism can prevent the valve flap from getting stuck between the valve flap and the valve body due to a large force when the valve flap is flipped, thereby causing the valve flap to be unable to reset, thereby affecting the residual steam recovery operation.

[0005] To solve the problems of the prior art, the utility model provides a device for preventing the check valve of a recovery pump from getting stuck, comprising a valve body, the valve body being respectively provided with an input end, an output end and an inspection end, the inspection end of the valve body being provided with a sealing cover, the sealing cover being connected to the valve body via a plurality of bolt assemblies, a rotatable valve stem being provided inside the valve body, a valve disc being provided on the valve stem, the valve disc being capable of abutting against the valve body, an abutting block being provided on the valve body, and a movable anti-jamming mechanism being provided on the abutting block.

[0006] Preferably, the anti-jamming mechanism comprises a positioning block, the positioning block is movably arranged on the abutment block, and the abutment block is provided with a placement groove for placing the positioning block.

[0007] Preferably, a fixing component is provided on the abutment block, and the fixing component includes a plug-in block and a butterfly bolt; the plug-in block is movably arranged on the abutment block, a plug-in groove for movement of the plug-in block is provided on the abutment block, and the plug-in block is connected to the positioning block; the butterfly bolt is provided on the abutment block, and the working end of the butterfly bolt can penetrate the abutment block and be threadedly connected to the plug-in block.

[0008] Preferably, a buffer assembly connected to the positioning block is provided on the plug-in block, and the buffer assembly includes a limit shaft and a spring; at least one of the limit shafts is provided on the plug-in block; the number of the springs is the same as the number of the limit shafts and is sleeved on the limit shafts in a one-to-one correspondence, and one end of the spring is connected to the plug-in block, and the other end is connected to the positioning block.

[0009] Preferably, a plurality of limiting parts are also provided on the plug-in block, and the limiting parts include a fixed plate, a movable plate and a limiting plate; the fixed plate is provided on the plug-in block; the movable plate is provided on the positioning block, and the movable plate is slidably connected to the fixed plate; the limiting plate is provided on the movable plate, and the fixed plate is provided with a limiting groove which cooperates with the limiting plate.

[0010] Preferably, a connecting assembly connected to the valve stem is arranged on the valve body, and the connecting assembly includes a fixed block, a connecting block and a rotating shaft; the fixed block is arranged on a side of the valve body away from the fixed block; the connecting block is arranged on the fixed block; the rotating shaft is rotatably arranged on a side of the connecting block away from the fixed block, and the rotating shaft is connected to the valve stem.

[0011] Preferably, the connecting block is also provided with a plurality of limit blocks, the limit blocks are movably arranged on the fixed block, the fixed block is provided with a positioning groove for movement of the limit blocks, the fixed block is also provided with a bolt, the working end of the bolt can penetrate the fixed block and be bolted to the connecting block.

[0012] Preferably, the valve stem is provided with a limiting component capable of fixing the valve disc, and the component includes a screw and a nut; the screw is arranged on the valve disc, and the side of the screw away from the valve disc can penetrate the valve stem; the nut is arranged on the valve stem, and the nut is threadedly connected to the screw.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model can prevent the valve flap from getting stuck between the valve flap and the valve body due to a large force when the valve flap is turned over through the anti-jamming mechanism, thereby causing the valve flap to be unable to reset, thereby affecting the residual steam recovery work. At the same time, the valve flap and the valve body can also be effectively protected, thereby extending the service life of the valve flap and the valve body.

[0015] 2. In the present invention, the anti-jamming mechanism can be moved on the abutment block, so that the anti-jamming mechanism and the abutment block are detachably connected, thereby improving the convenience of replacing the anti-jamming mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The invention is a three-dimensional structural schematic diagram of a device for preventing a check valve of a recovery water pump from getting stuck.

[0017] Figure 2 A 3D cutaway view of the internal structure of a device for preventing the check valve of a recovery water pump from getting stuck. Figure 1 .

[0018] Figure 3 A partial three-dimensional cutaway view of a device for preventing a check valve of a recovery water pump from getting stuck Figure 1 .

[0019] Figure 4 A partial three-dimensional cutaway view of a device for preventing a check valve of a recovery water pump from getting stuck Figure 2 .

[0020] Figure 5 This application Figure 4 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 6 A 3D cutaway view of the internal structure of a device for preventing the check valve of a recovery water pump from getting stuck. Figure 2 .

[0022] Figure 7 The present invention is a partial three-dimensional structural schematic diagram of a device for preventing a check valve of a recovery water pump from getting stuck.

[0023] The numbers in the figure are: 1. valve body; 11. input end; 12. output end; 13. maintenance end; 14. connecting assembly; 141. fixing block; 1411. bolt; 1412. positioning groove; 142. connecting block; 1421. limiting block; 143. rotating shaft; 2. valve stem; 21. limiting assembly; 211. screw; 212. nut; 3. valve disc; 31. buffer part; 4. sealing cover; 5. abutment block; 6. jamming mechanism; 61. positioning block; 62. placement groove; 63. fixing assembly; 631. plug-in block; 632. plug-in groove; 633. butterfly bolt; 64. buffer assembly; 641. limiting shaft; 642. spring; 643. limiting part; 6431. fixing plate; 6432. moving plate; 6433. limiting plate; 6434. limiting groove. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figures 1 to 7 As shown, a device for preventing a check valve of a recovery water pump from getting stuck comprises a valve body 1, the valve body 1 is respectively provided with an input end 11, an output end 12 and an inspection end 13, the inspection end 13 of the valve body 1 is provided with a sealing cover 4, the sealing cover 4 is connected to the valve body 1 through a plurality of bolt assemblies, a rotatable valve stem 2 is provided inside the valve body 1, a valve disc 3 is provided on the valve stem 2, the valve disc 3 can be abutted against the valve body 1, an abutment block 5 is provided on the valve body 1, and a movable anti-jamming mechanism 6 is provided on the abutment block 5.

[0026] When the device is performing the residual steam recovery work, the high-pressure steam will enter the interior of the valve body 1 from the input end 11 of the valve body 1, and then hit the valve flap 3, causing the valve flap 3 to flip, thereby opening the valve body 1, so that the high-pressure steam will come out from the output end 12 of the valve body 1, thereby realizing the recovery effect. When the valve flap 3 flips, due to the limiting effect of the valve stem 2, the valve flap 3 will abut against the anti-jamming mechanism 6 after flipping to a certain angle. The valve flap 3 is also provided with a buffer portion 31, so that when the valve flap 3 is reset and abuts against the valve body 1, the valve flap 3 can be buffered, thereby being able to The valve flap 3 and the valve body 1 are effectively protected, and the anti-jamming mechanism 6 can prevent the valve flap 3 from getting stuck between the valve flap 3 and the valve body 1 due to the large force when the valve flap 3 is flipped, thereby causing the valve flap 3 to be unable to reset, thereby affecting the residual steam recovery work, and at the same time, the valve flap 3 and the valve body 1 can be effectively protected, thereby extending the service life of the valve flap 3 and the valve body 1, and the anti-jamming mechanism 6 can be moved on the abutment block 5, so that the anti-jamming mechanism 6 and the abutment block 5 are detachably connected, thereby improving the convenience of replacing the anti-jamming mechanism 6.

[0027] Reference Figure 3 As shown, the anti-jamming mechanism 6 includes a positioning block 61 , and the positioning block 61 is movably arranged on the abutting block 5 , and the abutting block 5 is provided with a placement groove 62 for placing the positioning block 61 .

[0028] By abutting the positioning block 61 against the valve flap 3, the valve flap 3 can be limited. This structure is simpler and more practical. When the abutment block 5 needs to be replaced, the positioning block 61 can be directly removed from the placement groove 62 of the abutment block 5, thereby improving the convenience of operating the abutment block 5.

[0029] Reference Figure 4 and Figure 6 As shown, a fixing assembly 63 is arranged on the abutment block 5, and the fixing assembly 63 includes a plug-in block 631 and a butterfly bolt 633; ​​the plug-in block 631 is movably arranged on the abutment block 5, and a plug-in groove 632 for movement of the plug-in block 631 is arranged on the abutment block 5, and the plug-in block 631 is connected to the positioning block 61; the butterfly bolt 633 is arranged on the abutment block 5, and the working end of the butterfly bolt 633 can penetrate the abutment block 5 and be threadedly connected to the plug-in block 631.

[0030] The plug-in block 631 is arranged in the plug-in groove 632 of the abutment block 5, so that the contact area between the plug-in block 631 and the abutment block 5 is larger, thereby improving the stability of the positioning block 61 on the abutment block 5, and further improving the working effect of the positioning block 61 during operation, and the plug-in block 631 is fixed to the abutment block 5 by the butterfly bolt 633. Such a threaded connection method is simpler and more reliable, and then if the positioning block 61 needs to be removed, it is only necessary to loosen the butterfly bolt 633 first, and then the positioning block 61 can be quickly removed from the abutment block 5.

[0031] Reference Figure 6 and Figure 7 As shown, a buffer component 64 connected to the positioning block 61 is provided on the plug-in block 631, and the buffer component 64 includes a limit shaft 641 and a spring 642; at least one of the limit shafts 641 is provided on the plug-in block 631; the number of the springs 642 is the same as the number of the limit shafts 641 and is sleeved on the limit shafts 641 in a one-to-one correspondence, and one end of the spring 642 is connected to the plug-in block 631, and the other end is connected to the positioning block 61.

[0032] When the valve flap 3 abuts against the positioning block 61, the valve flap 3 will act on the positioning block 61 with a force, and this force will drive the positioning block 61 to move toward the direction of the plug-in block 631, and then the positioning block 61 will squeeze the spring 642, so that the spring 642 is compressed and deformed, and has a spring 642 reset force, and the compression deformation of the spring 642 will offset this force, and then the positioning block 61 and the valve flap 3 can be protected, thereby extending the service life of the positioning block 61 and the valve flap 3, and the limiting effect of the limiting shaft 641 on the spring 642 can prevent the spring 642 from being offset, thereby making the spring 642 more stable during operation.

[0033] Reference Figure 6 and Figure 7 As shown, a plurality of limiting parts 643 are also provided on the plug-in block 631, and the limiting parts 643 include a fixed plate 6431, a movable plate 6432 and a limiting plate 6433; the fixed plate 6431 is provided on the plug-in block 631; the movable plate 6432 is provided on the positioning block 61, and the movable plate 6432 is slidably connected to the fixed plate 6431; the limiting plate 6433 is provided on the movable plate 6432, and the fixed plate 6431 is provided with a limiting groove 6434 which cooperates with the limiting plate 6433.

[0034] The movable plate 6432 is moved on the fixed plate 6431, so as to form a limiting and guiding effect again between the plug-in block 631 and the positioning block 61, thereby preventing the plug-in block 631 and the positioning block 61 from being unstable only by the spring 642, and the limiting plate 6433 can only move within the limiting groove 6434 of the fixed plate 6431, thereby limiting the horizontal direction of the fixed plate 6431 and the movable plate 6432, so that the movable plate 6432 can only move along the fixed plate 6431, thereby further improving the stability of the positioning block 61 during operation.

[0035] Reference Figure 2 and Figure 4 As shown, the valve body 1 is provided with a connecting component 14 connected to the valve stem 2, and the connecting component 14 includes a fixed block 141, a connecting block 142 and a rotating shaft 143; the fixed block 141 is provided on a side of the valve body 1 away from the fixed block 141; the connecting block 142 is provided on the fixed block 141; the rotating shaft 143 is rotatably provided on a side of the connecting block 142 away from the fixed block 141, and the rotating shaft 143 is connected to the valve stem 2.

[0036] When the valve flap 3 needs to be installed on the valve body 1, the fixing block 141 is first fixedly connected to the valve body 1, and then the connecting block 142 is installed on the fixing block 141, and then the valve stem 2 is connected to the connecting block 142 through the rotating shaft 143, so that the valve flap 3 is installed on the valve body 1. This structure is simpler, thereby saving costs.

[0037] Reference Figure 4 and Figure 5 As shown, the connecting block 142 is also provided with a plurality of limit blocks 1421, and the limit blocks 1421 can be movably arranged on the fixed block 141, and the fixed block 141 is provided with a positioning groove 1412 for the movement of the limit blocks 1421, and the fixed block 141 is also provided with a bolt 1411, and the working end of the bolt 1411 can penetrate the fixed block 141 and be connected with the connecting block 142 by the bolt 1411.

[0038] The limiting block 1421 is moved in the positioning groove 1412 of the fixing block 141, so when the positioning block 61 is installed on the fixing block 141, it is only necessary to move the limiting block 1421 into the positioning groove 1412 of the fixing block 141, and the limiting block 1421 cooperates with the positioning groove 1412 so that the connecting block 142 will not be horizontally displaced on the fixing block 141, and then the connecting block 142 is fixed to the fixing block 141 by the bolt 1411, so that the installation method is simpler and the disassembly of the connecting block 142 is also convenient.

[0039] Reference Figure 6 As shown, the valve stem 2 is provided with a limiting component 21 capable of fixing the valve flap 3, and the component includes a screw 211 and a nut 212; the screw 211 is arranged on the valve flap 3, and the side of the screw 211 away from the valve flap 3 can penetrate the valve stem 2; the nut 212 is arranged on the valve stem 2, and the nut 212 is threadedly connected to the screw 211.

[0040] Through the threaded connection between the screw rod 211 and the nut 212, when the valve flap 3 is damaged after a long period of operation, it can be quickly replaced, thereby improving convenience.

[0041] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A device for preventing a check valve of a recovery water pump from getting stuck, characterized in that: The invention comprises a valve body (1), wherein the valve body (1) is respectively provided with an input end (11), an output end (12) and an inspection end (13); the inspection end (13) of the valve body (1) is provided with a sealing cover (4); the sealing cover (4) is connected to the valve body (1) via a plurality of bolt assemblies; a rotatable valve stem (2) is provided inside the valve body (1); a valve flap (3) is provided on the valve stem (2); the valve flap (3) can be arranged in abutment with the valve body (1); an abutment block (5) is provided on the valve body (1); and a movable anti-jamming mechanism (6) is provided on the abutment block (5).

2. A device for preventing a check valve of a recovery water pump from getting stuck according to claim 1, characterized in that: The anti-jamming mechanism (6) comprises a positioning block (61), the positioning block (61) being movably arranged on the abutment block (5), and the abutment block (5) being provided with a placement groove (62) for placing the positioning block (61).

3. A device for preventing a check valve of a recovery water pump from getting stuck according to claim 2, characterized in that: The abutment block (5) is provided with a fixing assembly (63), and the fixing assembly (63) comprises a plug-in block (631) and a butterfly bolt (633); The plug-in block (631) is movably arranged on the abutment block (5), the abutment block (5) is provided with a plug-in slot (632) for the plug-in block (631) to move, and the plug-in block (631) is connected to the positioning block (61); The butterfly bolt (633) is arranged on the abutment block (5), and the working end of the butterfly bolt (633) can penetrate the abutment block (5) and be threadedly connected with the plug-in block (631).

4. A device for preventing a check valve of a recovery water pump from getting stuck according to claim 3, characterized in that: The plug-in block (631) is provided with a buffer assembly (64) connected to the positioning block (61), and the buffer assembly (64) comprises a limiting shaft (641) and a spring (642); At least one of the limiting shafts (641) is arranged on the plug-in block (631); The number of the springs (642) is the same as the number of the limiting shafts (641) and they are sleeved on the limiting shafts (641) in a one-to-one correspondence, and one end of the spring (642) is connected to the plug-in block (631), and the other end is connected to the positioning block (61).

5. The device for preventing the check valve of a recovery water pump from getting stuck according to claim 3, characterized in that: The plug-in block (631) is also provided with a plurality of limiting parts (643), and the limiting parts (643) include a fixed plate (6431), a movable plate (6432) and a limiting plate (6433); The fixing plate (6431) is arranged on the plug-in block (631); The movable plate (6432) is arranged on the positioning block (61), and the movable plate (6432) is slidably connected to the fixed plate (6431); The limiting plate (6433) is arranged on the movable plate (6432), and the fixed plate (6431) is provided with a limiting groove (6434) which cooperates with the limiting plate (6433).

6. The device for preventing the check valve of a recovery water pump from getting stuck according to claim 1, characterized in that: The valve body (1) is provided with a connecting assembly (14) connected to the valve stem (2), and the connecting assembly (14) comprises a fixing block (141), a connecting block (142) and a rotating shaft (143); The fixing block (141) is arranged on a side of the valve body (1) away from the fixing block (141); The connecting block (142) is arranged on the fixing block (141); The rotating shaft (143) is rotatably arranged on a side of the connecting block (142) away from the fixing block (141), and the rotating shaft (143) is connected to the valve stem (2).

7. A device for preventing a check valve of a recovery water pump from getting stuck according to claim 6, characterized in that: The connecting block (142) is also provided with a plurality of limit blocks (1421), the limit blocks (1421) are movably arranged on the fixed block (141), the fixed block (141) is provided with a positioning groove (1412) for the limit blocks (1421) to move, the fixed block (141) is also provided with a bolt (1411), the working end of the bolt (1411) can penetrate the fixed block (141) and be connected to the bolt (1411) of the connecting block (142).

8. The device for preventing the check valve of a recovery water pump from getting stuck according to claim 1, characterized in that: The valve stem (2) is provided with a limit assembly (21) capable of fixing the valve flap (3), and the assembly comprises a screw rod (211) and a nut (212); The screw rod (211) is arranged on the valve flap (3), and a side of the screw rod (211) away from the valve flap (3) can penetrate the valve stem (2); The nut (212) is arranged on the valve stem (2), and the nut (212) is threadedly connected to the screw rod (211).

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