Pump pipe check valve of concrete delivery pump

Abstract

The utility model relates to the technical field of concrete, and provides a pump pipe check valve of a concrete delivery pump, according to the design, a screwing assembly and a closing assembly are arranged in a check valve plate, after pouring is completed, a screwing cap can be screwed through an external tool, and then the screwing cap drives a bidirectional threaded rod to rotate in a rail groove; at the moment, the sliding seats at the opposite threads on the two sides of the two sets of threaded connection bidirectional threaded rods synchronously move in opposite directions along with the two sets of threaded connection bidirectional threaded rods, and the closed sliding plates fixedly connected to the tops of the sliding seats synchronously move in opposite directions along with the two sets of threaded connection bidirectional threaded rods till closing is completed at the flow channel. According to the design, the closing work of the two sets of closed sliding plates at the flow channel can be completed only by screwing the screwing caps, so that the time consumption of the process flow is effectively reduced, and meanwhile, before the pouring process, the closed sliding plates are arranged at the two-way threaded rods through sliding seat threads in a sleeving mode; by means of the design, the situation that the closed sliding plate slides in the check valve plate due to the fact that the closed sliding plate is affected by concrete circulation before pouring can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, and specifically, to a check valve for a pump pipe of a concrete conveying pump. Background Art

[0002] The construction technology of jacking the core concrete of a concrete-filled steel tubular column is a concrete vibration-free construction method that uses the pumping pressure of a concrete conveying pump to pour self-compacting concrete from the bottom of the steel tubular column until the entire steel tubular column is filled. To prevent the concrete from flowing back when the concrete conveying pipe is removed, a check valve needs to be set at the bottom of the column.

[0003] After retrieval, the patent with the publication number CN209324648U discloses a check valve for a pump pipe of a concrete conveying pump, which relates to the technical field of concrete. It includes a concrete access pipe located at the bottom of the steel tubular column and a pump pipe connecting pipe connected to the conveying pump. A check valve plate is connected between the concrete access pipe and the pump pipe connecting pipe. A through hole with the same diameter as the concrete access pipe and the pump pipe connecting pipe is opened on the check valve plate. A slideway communicating with the through hole is opened inside the check valve plate. A first plug board and a second plug board are slidably arranged on both sides of the through hole in the slideway. The first plug board and the second plug board can slide along the slideway towards the center of the through hole to block the through hole. Through this utility model, the through hole on the check valve plate can be blocked after the concrete pouring is completed, preventing the backflow of the concrete, with good sealing effect and easy to implement.

[0004] The above-mentioned check valve for a pump pipe of a concrete conveying pump is to drive the plug board to move towards each other in the slideway by respectively screwing two groups of screw rods after the pouring is completed, so as to complete the closing work of the two groups of slide boards at the through hole. The defect of this design is that its process requires independently screwing two groups of screw rods to drive the plug board to move. This repeated step will increase the time-consuming of the overall process. Secondly, before the plug board closes the through hole, the plug board in the slideway is easily affected by the concrete flow, resulting in the plug board accidentally sliding to the through hole, and then the through hole cannot be fully opened and closed due to the blockage of the plug board, ultimately affecting the concrete flow rate at the through hole. Summary of the Utility Model

[0005] The utility model provides a check valve for a pump pipe of a concrete conveying pump, which solves the problems in the prior art that it is necessary to independently screw two groups of screw rods to drive the plug board to move. This repeated step will increase the time-consuming of the overall process. Secondly, before the plug board closes the through hole, the plug board in the slideway is easily affected by the concrete flow, resulting in the plug board accidentally sliding to the through hole, and then the through hole cannot be fully opened and closed due to the blockage of the plug board, ultimately affecting the concrete flow rate at the through hole.

[0006] The technical solution of the present utility model is as follows: A check valve for a concrete delivery pump pipe, comprising a check valve plate, and a rail groove opened at the inner bottom of the check valve plate; a flow channel penetrating through the middle of the check valve plate; a screwing component arranged in the rail groove; the screwing component can rotate forward and backward in the rail groove under the screwing of an external tool; two sets of closing components symmetrically arranged above the screwing component; the closing components can rotate forward and backward with the screwing component to complete the closing work at the flow channel; a limiting component arranged inside the check valve plate above the rail groove; the limiting component can complete the closing and anti-seepage work at the rail groove before the concrete is injected; a pump pipe connection component arranged on the front of the check valve plate for disassembly and assembly before and after the concrete flows through.

[0007] Preferably, the screwing component includes: a bidirectional threaded rod rotatably connected in the rail groove; a screwing cap fixedly connected to the side end of the bidirectional threaded rod.

[0008] Preferably, the screwing component further includes: sliding seats threadedly connected to the opposite threads on both sides of the bidirectional threaded rod; a limiting sleeve fixedly connected to the side of the check valve plate.

[0009] Preferably, the closing component further includes: a closing slide plate fixedly connected to the top of the sliding seat; an embedded groove fixedly connected to the side of the closing slide plate.

[0010] Preferably, the check valve plate further includes: four groups of first threaded grooves annularly opened on the front of the check valve plate and outside the flow channel; a slot penetrating through the front of the check valve plate and located below the flow channel.

[0011] Preferably, the limiting component further includes: a anti-seepage plate inserted into the slot.

[0012] Preferably, the limiting component further includes: a clamping seat arranged on the front of the check valve plate and outside the anti-seepage plate; second through holes penetrating through the upper and lower sides of the clamping seat; a second threaded groove opened on the front of the check valve plate and below the anti-seepage plate; a second bolt passing through the lower clamping seat and threadedly connected to the second threaded groove.

[0013] Preferably, the pump pipe connection component further includes: a pump pipe connection pipe arranged on the front of the check valve plate; a flange fixedly connected to the side end of the pump pipe connection pipe; first through holes annularly penetrating through the periphery of the flange; the positions of the first through holes correspond to the first threaded grooves.

[0014] Preferably, the pump pipe connection component further includes: first bolts passing through the first through holes and threadedly connected to the first threaded grooves.

[0015] Preferably, the check valve plate further includes a concrete access pipe fixedly installed on the other side of the check valve plate.

[0016] The beneficial effects of the present utility model are as follows:

[0017] In the check valve plate of the present utility model, a screwing component and a closing component are provided. After the pouring is completed, an external tool can be used to screw the screw cap, so that the screw cap drives the bidirectional threaded rod to rotate in the rail groove. At this time, the sliding seats threadedly connected to the opposite threaded sides on both sides of the bidirectional threaded rod move synchronously and towards each other in the rail groove. At this time, the closing sliding plates fixedly connected to the tops of the sliding seats move synchronously and towards each other until they are closed at the flow channel. Compared with the comparative document, this design only needs to screw the screw cap to complete the closing work of the two closing sliding plates at the flow channel, thereby effectively reducing the time-consuming of the process flow. At the same time, before the pouring process, the closing sliding plate is threadedly sleeved on the bidirectional threaded rod through the sliding seat, and this design can also effectively prevent the closing sliding plate from sliding in the check valve plate due to the influence of concrete circulation before pouring, and inadvertently blocking the flow channel, resulting in the influence of the concrete flow rate in the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the overall device of the present utility model;

[0020] Figure 2 It is a schematic diagram of the separation of the check valve plate and the pump pipe connecting pipe of the present utility model;

[0021] Figure 3 It is a schematic diagram of the separation of the card seat and the check valve plate of the present utility model;

[0022] Figure 4 It is a schematic diagram of the separation of the anti-seepage plate and the check valve plate of the present utility model;

[0023] Figure 5 It is a schematic diagram of the inside of the check valve plate of the present utility model;

[0024] In the figure: 1. Check valve plate; 11. First thread groove; 12. Flow channel; 13. Slot; 14. Rail groove; 2. Pump pipe connection component; 21. Pump pipe connecting pipe; 22. Flange; 221. First through hole; 23. First bolt; 3. Limit component; 31. Anti-seepage plate; 32. Card seat; 321. Second through hole; 33. Second bolt; 34. Second thread groove; 4. Screwing component; 41. Screw cap; 411. Bidirectional threaded rod; 42. Sliding seat; 43. Limit sleeve; 5. Closing component; 51. Closing sliding plate; 52. Embedded groove; 6. Concrete access pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0026] Please refer to Figure 4 and Figure 5 , the present invention provides a technical solution: a check valve for a concrete delivery pump, including a check valve plate 1, and a rail groove 14 opened at the inner bottom of the check valve plate 1; a flow channel 12 penetrating through the middle of the check valve plate 1; a screwing component 4 arranged in the rail groove 14; the screwing component (4) can complete forward and reverse rotation work in the rail groove 14 under the screwing of an external tool; two sets of closing components 5 symmetrically arranged above the screwing component 4; the closing components 5 can complete the closing work at the flow channel 12 as the screwing component 4 rotates forward and backward; a limiting component 3 arranged inside the check valve plate 1 above the rail groove 14; the limiting component 3 can complete the closing and anti-seepage work at the rail groove 14 before concrete injection; a pump pipe connection component 2 arranged on the front of the check valve plate 1 for disassembly and assembly before and after concrete flow.

[0027] Through this design, it effectively solves the problem in the prior art that it is necessary to independently screw two sets of screws to drive the movement of the plug plate. This repeated step will increase the time consumption of the overall process. Secondly, before the plug plate completes the closing in the through hole, the plug plate is easily affected by the concrete flow in the slideway, resulting in the plug plate accidentally sliding to the through hole, and then the through hole cannot be fully opened and closed due to the blockage of the plug plate, and finally the concrete flow rate at the through hole is affected.

[0028] Please refer to Figure 5 , the screwing component 4 includes: a bidirectional threaded rod 411 rotatably connected in the rail groove 14; a screwing cap 41 fixedly connected to the side end of the bidirectional threaded rod 411; and sliding seats 42 threadedly connected to the opposite threads on both sides of the bidirectional threaded rod 411.

[0029] By screwing the screwing cap 41 with an external tool to rotate, the screwing cap 41 can drive the bidirectional threaded rod 411 to complete synchronous rotation in the rail groove 14. When the bidirectional threaded rod 411 completes rotation in the rail groove 14, the sliding seats 42 threadedly connected to the opposite threads on both sides of the bidirectional threaded rod 411 can move horizontally in the same direction synchronously.

[0030] A limiting sleeve 43 fixedly connected to the side of the check valve plate 1; through the limiting sleeve 43, not only can the axial limit of the rotation of the screwing cap 41 and the bidirectional threaded rod 411 be carried out, but also the limiting sleeve 43 can effectively prevent external foreign objects from entering the rail groove 14.

[0031] Please refer to Figure 5 , the closing assembly 5 further includes: a closing slide plate 51 fixedly connected to the top of the slide base 42; an embedded groove 52 fixedly connected to the side of the closing slide plate 51; when the two groups of slide bases 42 complete horizontal inward movement on the bidirectional threaded rod 411, the closing slide plates 51 fixedly connected to the outer sides of the two groups of slide bases 42 will move synchronously and inward until they fit at the flow channel 12. In particular, for the fitting sides of the two groups of embedded grooves 52, embedded grooves 52 are provided. Through the embedded grooves 52, it can effectively prevent gaps from appearing after the two closing slide plates 51 are fitted, thereby preventing subsequent leakage of concrete.

[0032] Please refer to Figure 3 , the check valve plate 1 further includes: four first threaded grooves 11 annularly formed on the front surface of the check valve plate 1 and located outside the flow channel 12; a slot 13 penetrating through the front surface of the check valve plate 1 and located below the flow channel 12; a waterproof plate 31 inserted into the slot 13; a clamping seat 32 provided on the front surface of the check valve plate 1 and located outside the waterproof plate 31; second through holes 321 penetrating through the upper and lower sides of the clamping seat 32; a second threaded groove 34 formed on the front surface of the check valve plate 1 and located below the waterproof plate 31; a second bolt 33 passing through the lower clamping seat 32 and threadedly connected to the second threaded groove 34;

[0033] Before concrete pouring, the waterproof plate 31 can be inserted into the slot 13, and then the closing work at the rail groove 14 can be completed through the waterproof plate 31. This design can effectively prevent concrete from remaining in the rail groove 14 during concrete pouring, thereby preventing the subsequent slide base 42 from being blocked in the rail groove 14, and ultimately preventing the closing slide plate 51 from closing at the flow channel 12. And when the waterproof plate 31 is inserted from the slot 13 to above the rail groove 14, the second bolt 33 can be screwed through the clamping seat 32 and threadedly connected to the second threaded groove 34 to complete the fixing work of the clamping seat 32 on the front surface of the check valve plate 1. The fixed clamping seat 32 can prevent the waterproof plate 31 from loosening when inserted into the slot 13.

[0034] Please refer to Figure 2 , the pump pipe connection assembly 2 further includes: a pump pipe connection pipe 21 provided on the front surface of the check valve plate 1; a flange 22 fixedly connected to the side end of the pump pipe connection pipe 21; first through holes 221 annularly penetrating through the four sides of the flange 22; the positions of the first through holes 221 correspond to those of the first threaded grooves 11; first bolts 23 passing through the first through holes 221 and threadedly connected to the first threaded grooves 11; a concrete access pipe 6 fixedly installed on the other side surface of the check valve plate 1.

[0035] The installation of the check valve plate 1, the flange 22, and the pump pipe connecting pipe 21 is completed by passing the first bolt 23 through the first through hole 221 and threadedly connecting it in the first thread groove 11. The circulation during the concrete pouring process can be completed through the pump pipe connecting pipe 21. Particularly, after the pouring is completed, and after the closing slide plate 51 is closed at the flow channel 12 under the action of the screwing component 4, the first bolt 23 can be unscrewed in sequence to remove the pump pipe connecting pipe 21 and the flange 22 from the front of the check valve plate 1.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A check valve for the pump pipe of a concrete pump, characterized in that: It includes a check valve plate (1), and a rail groove (14) opened at the inner bottom of the check valve plate (1); a flow channel (12) penetrating and opened in the middle of the check valve plate (1); a screwing component (4) arranged in the rail groove (14); the screwing component (4) can rotate forward and backward in the rail groove (14) under the screwing of an external tool; two groups of closing components (5) symmetrically arranged above the screwing component (4); the closing components (5) can rotate forward and backward with the screwing component (4) and then complete the closing work at the flow channel (12); a limiting component (3) arranged inside the check valve plate (1) above the rail groove (14); the limiting component (3) can complete the closing and anti-seepage work at the rail groove (14) before concrete injection; a pump pipe connection component (2) arranged on the front of the check valve plate (1) for disassembly and assembly before and after concrete circulation.

2. The check valve for the pump pipe of a concrete pump according to claim 1, characterized in that, The screwing component (4) includes: a bidirectional threaded rod (411) rotatably connected in the rail groove (14); a screwing cap (41) fixedly connected to the side end of the bidirectional threaded rod (411).

3. The check valve for the pump pipe of a concrete delivery pump according to claim 2, characterized in that, The screwing component (4) further includes: sliding seats (42) threadedly connected to the opposite threaded parts on both sides of the bidirectional threaded rod (411); a limiting sleeve (43) fixedly connected to the side of the check valve plate (1).

4. The check valve for the pump pipe of a concrete pump according to claim 3, characterized in that, The closing component (5) further includes: a closing slide plate (51) fixedly connected to the top of the sliding seat (42); an embedded groove (52) fixedly connected to the side of the closing slide plate (51).

5. The check valve for the pump pipe of a concrete pump according to claim 1, characterized in that, The check valve plate (1) further includes: four groups of first thread grooves (11) annularly opened on the front of the check valve plate (1) and located outside the flow channel (12); a slot (13) penetrating and opened on the front of the check valve plate (1) and located below the flow channel (12).

6. The check valve for the pump pipe of a concrete pump according to claim 5, characterized in that, The limiting component (3) further includes: a waterproof plate (31) inserted into the slot (13).

7. The check valve for the pump pipe of a concrete delivery pump according to claim 6, characterized in that, The limiting component (3) further includes: a clamping seat (32) arranged on the front of the check valve plate (1) and located outside the waterproof plate (31); second through holes (321) penetrating through the upper and lower sides of the clamping seat (32); a second thread groove (34) opened on the front of the check valve plate (1) and located below the waterproof plate (31); a second bolt (33) passing through the lower clamping seat (32) and threadedly connected in the second thread groove (34).

8. A check valve for a pump pipe of a concrete pump according to claim 7, characterized in that, The pump pipe connection component (2) further includes: a pump pipe connection pipe (21) arranged on the front of the check valve plate (1); a flange plate (22) fixedly connected to the side end of the pump pipe connection pipe (21); first through holes (221) annularly penetrating through the four sides of the flange plate (22); The positions of the first through holes (221) correspond to those of the first thread grooves (11).

9. The check valve for the pump pipe of a concrete pump according to claim 8, wherein, The pump pipe connection component (2) further includes: first bolts (23) passing through the first through holes (221) and threadedly connected in the first thread grooves (11).

10. The check valve for the pump pipe of a concrete pump according to claim 1, characterized in that, The check valve plate (1) further includes: a concrete access pipe (6) fixedly installed on the other side of the check valve plate (1).

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