Anti-blocking concrete delivery pump

Abstract

The utility model discloses an anti-blocking concrete delivery pump, and belongs to the technical field of concrete. By additionally arranging structures for assisting in cleaning or avoiding adhesion in the discharging pipe, the straight pipe and the conveying pipe, the blockage problem of the conveying pump is effectively avoided, and the additionally arranged water tank, water pump and water guide pipe effectively clean the conveying channel under the cooperation of the hydraulic cylinder; and the damage rate of parts in the delivery pump is reduced, or replacement caused by the fact that concrete delivery cannot be completed smoothly due to blockage is reduced. A discharging pipe is arranged at the front end of the stirring box, a first opening is formed in the outer surface of the discharging pipe, an annular groove communicated with the first opening is formed in an inner cavity of the discharging pipe, a detachable partition plate is arranged in the annular groove, two second openings are formed in the inner wall of the conveying pipe, sliding grooves communicated with the second openings are formed in the conveying pipe, and sliding plates are arranged in the sliding grooves. A water tank is arranged at the bottom of the stirring box, a water guide pipe is arranged between the conveying pipe and the water tank, and two straight pipes arranged side by side are arranged in the control box.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, specifically to an anti-clogging concrete delivery pump. Background Technology

[0002] In addition to using large concrete pumps to pour concrete for supporting columns on construction sites, some local areas that require small quantities of concrete also need to use dedicated small concrete pumps to keep the concrete usable and to ensure continuous delivery. However, existing concrete pumps suffer from blockages due to the presence of stones of different sizes in the concrete during delivery. Furthermore, when the concrete is not being delivered, some of the stones will stick to the inner wall of the delivery pipe after a certain period of time, causing blockages that prevent the smooth delivery of concrete. This increases the frequency and cost of parts maintenance or replacement.

[0003] Therefore, how to solve the problem of concrete blockage in the delivery pipe is a technical issue that needs to be addressed. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete conveying pump that prevents clogging. By adding auxiliary cleaning or anti-sticking structures to the discharge pipe, straight pipe and conveying pipe, the clogging problem during use can be effectively avoided. At the same time, the added water tank, water pump and water guide pipe, with the cooperation of hydraulic cylinder, effectively clean the conveying channel, reducing the damage rate of the parts inside the conveying pump or the need for replacement due to clogging that prevents the smooth delivery of concrete.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete conveying pump for preventing blockage, comprising a mixing tank, a mixing rod inside the mixing tank, a discharge pipe at the front end of the mixing tank, an opening 1 on the outer surface of the discharge pipe, an annular groove on the inner wall of the discharge pipe communicating with the opening 1, a detachable partition inside the annular groove, a conveying pipe inside the mixing tank, two openings 2 on the inner wall of the conveying pipe, a sliding groove communicating with the opening 2 inside the conveying pipe, a sliding plate inside each sliding groove, a slider for controlling the displacement of the sliding plate on the outer surface of the conveying pipe, two parallel straight pipes inside a control box, a hydraulic cylinder inside each straight pipe, a push block 2 at the front end of the hydraulic cylinder, a detachable scraper sleeve at the front end of the push block 2, and a water tank at the bottom of the mixing tank.

[0006] Preferably, there are insertion ports on both sides of the opening, one of which has an insertion plate. A push block is provided on the outer surface of the discharge pipe near the opening to control the movement of the insertion plate. A reset spring is provided inside the discharge pipe to limit the movement of the push block.

[0007] Preferably, the partition is a PET sheet with a Teflon coating on its surface.

[0008] Preferably, the scraper sleeve is U-shaped, and its outer edge forms a triangular angle with the inner wall of the straight pipe. The scraper sleeve is made of high-hardness wear-resistant steel or tungsten carbide hard alloy.

[0009] Preferably, water inlets are provided on both sides of the feed pipe, the water inlets pass through the slide groove, the water inlets are connected to the guide pipe, the water inlets are connected to the water tank through the guide pipe, and the water tank is equipped with a water pump for supplying water to the guide pipe.

[0010] Preferably, the slide plate slides within the chute via a slider to control the connection and disconnection between the water guide pipe and the inner cavity of the delivery pipe.

[0011] Preferably, the lower end of the conveying pipe is provided with a drain outlet, and a screw cap is provided outside the drain outlet, and the screw cap is a threaded sealing structure.

[0012] Preferably, a return water inlet is provided between the water tank and the mixing tank, a baffle is provided inside the return water inlet, a groove is provided on one side of the return water inlet for the baffle to slide, and a telescopic rod is provided between one side of the baffle and the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The discharge pipe of this utility model adopts a replaceable baffle to facilitate the regular replacement or cleaning of concrete residue on the surface. Combined with the use of Teflon-coated PET sheet, the inner surface of the discharge pipe is not easy to stick to concrete material, effectively avoiding the possibility of blockage.

[0015] 2. The scraper sleeve of this utility model is made of high-hardness wear-resistant steel or tungsten carbide. It utilizes the U-shaped groove inside the scraper sleeve to form a triangular angle with the inner wall of the straight pipe, which enhances the scraping force and removes the concrete residue sticking to the inner wall of the straight pipe.

[0016] 3. The conveying pipe of this utility model has water inlets on both sides of the pipe, which can be connected to clean water from the outside to clean the inside of the pipe. Since ordinary clean water can only wash some residual materials without any external force, it cannot achieve an effective cleaning effect. Therefore, in combination with the hydraulic cylinder and push block in the straight pipe, the air pressure generated by the hydraulic cylinder during the backward and forward pushing process is used to increase the flushing force of the water to wash away the sticky materials in the pipe cavity, thereby improving the cleaning effect. Only regular cleaning of the pipe is required to effectively avoid blockage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the concrete conveying pump structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the concrete conveying pump of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the discharge pipe of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the conveying pipe of this utility model;

[0021] Figure 5 This utility model Figure 2 A magnified structural diagram of area A;

[0022] Figure 6 This utility model Figure 2 A magnified structural diagram of region B.

[0023] In the diagram: 1. Mixing tank; 2. Discharge pipe; 21. Opening 1; 22. Insert plate; 23. Push block 1; 24. Annular groove; 25. Baffle plate; 3. Conveying pipe; 31. Opening 2; 32. Slide chute; 33. Slide plate; 34. Sliding block; 35. Drain; 4. Straight pipe; 5. Hydraulic cylinder; 51. Push block 2; 52. Scraper sleeve; 6. Water tank; 61. Return water outlet; 62. Baffle plate; 7. Water guide pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To address the technical problem of existing concrete pumps causing blockages and hindering concrete delivery due to the presence of aggregates of varying sizes in the concrete, which can accumulate on the inner wall of the delivery pipe after a period of inactivity, thus increasing the frequency and cost of parts repair and replacement, please refer to [link to relevant documentation]. Figures 1-6 The following technical solutions are provided:

[0026] This utility model discloses an anti-clogging concrete conveying pump, comprising: a mixing tank 1, a mixing rod inside the mixing tank 1, a discharge pipe 2 at the front end of the mixing tank 1, an opening 21 on the outer surface of the discharge pipe 2, an annular groove 24 on the inner wall of the discharge pipe 2 communicating with the opening 21, a removable partition 25 within the annular groove 24, the partition 25 being a PET sheet with a Teflon coating, and a conveying pipe 3 inside the mixing tank 1, the inner wall of the conveying pipe 3 having two openings 31, and an opening connecting the two openings 31 to the opening 21. The two pipes 31 and 32 are connected by a sliding groove. Each sliding groove 32 has a sliding plate 33. The outer surface of the conveying pipe 3 has a slider 34 that controls the displacement of the sliding plate 33. The sliding plate 33 slides within the sliding groove 32 via the slider 34, controlling the connection between the water guide pipe 7 and the inner cavity of the conveying pipe 3. The control box contains two parallel straight pipes 4, each containing a hydraulic cylinder 5. The front end of the hydraulic cylinder 5 has a push block 51, and the front end of the push block 51 has a detachable scraper sleeve 52. The bottom of the mixing tank 1 has a water tank 6 to provide water for cleaning the pipe. Figure 3 The removable baffle 25 installed inside the discharge pipe 2 uses a PET sheet with Teflon coating to prevent concrete from sticking to the inside of the pipe when it is not discharged, thus avoiding blockage. The removable design also makes it easy to replace and maintain it regularly.

[0027] The slide plate 33, located in the chute 32, can control the opening or closing of the water inlet under the action of the slider 34, ensuring that the cleaning water can enter the delivery pipe 3 to complete the cleaning of the pipe.

[0028] Both sides of the opening 21 are provided with sockets, one of which is provided with a plate 22, which serves to open and close the opening 21. The outer surface of the discharge pipe 2 is provided with a push block 23 near the opening 21 to control the movement of the plate 22. The discharge pipe 2 is provided with a reset spring to limit the movement of the push block 23. When replacing the partition 25, simply move the plate 22 away from the opening 21 to open the channel of the opening 21, and insert the partition 25 into the groove 24 along the opening 21. The circular shape of the groove 24 can form a barrier on the inner wall of the discharge pipe 2. When replacement is needed, simply pull it out from the opening 21.

[0029] The scraper sleeve 52 is U-shaped, and its outer edge forms a triangular angle with the inner wall of the straight tube 4. The scraper sleeve 52 is made of high-hardness wear-resistant steel or tungsten carbide hard alloy. Figure 2 Visually, the U-shaped groove inside the scraper sleeve 52 forms a triangular angle with the inner wall of the straight pipe 4. Under the push of the hydraulic cylinder 5, the scraper sleeve 52 can scrape off the concrete material adhering to the inner wall of the straight pipe 4.

[0030] Water inlets are provided on both sides of the delivery pipe 3. The water inlets pass through the slide groove 32 and are connected to the water guide pipe 7. The water inlets are connected to the water tank 6 through the water guide pipe 7. The water tank 6 is equipped with a water pump to supply water to the water guide pipe 7. The water guide pipe 7 and the water pump draw water from the water tank 6 into the pipe through the slide groove 32 and the second opening 31. At this time, the hydraulic cylinder 5 is activated by using the opening between the delivery pipe 3 and the straight pipe 4 to push the push block 51 and the scraper sleeve 52 backward, so that a negative pressure is formed in the pipe. The water is drawn from the delivery pipe 3 into the straight pipe 4 and works with the scraper sleeve 52 to rinse the surface. Then the hydraulic cylinder 5 pushes the water forward to allow it to re-enter the delivery pipe 3. The impact force of the water is used to clean the concrete residue adhering to the inner wall of the delivery pipe 3. The cleaning effect is completed by repeating this process several times, which effectively ensures the smoothness of the inner wall and avoids clogging problems.

[0031] The lower end of the conveying pipe 3 is provided with a drain outlet 35, and the drain outlet 35 is provided with a screw cap with a threaded sealing structure, which can discharge the sewage inside after the conveying pipe 3 has been cleaned. A return water outlet 61 is provided between the water tank 6 and the mixing tank 1. A baffle 62 is provided inside the return water outlet 61. A groove for the baffle 62 to slide is provided on one side of the return water outlet 61. A telescopic rod is provided between one side of the baffle 62 and the groove. The baffle 62 can control whether the return water outlet 61 that runs through the water tank 6 is open. It can be used in conjunction with the drain outlet 35 to collect the sewage from cleaning the concrete residue in the conveying pipe 3 and the straight pipe 4 back into the water tank 6 for discharge.

[0032] Working principle: After the concrete pump completes a certain period of conveying operations, cleaning is performed to prevent blockage. Under the control of the rotating components within the pump, one end of the conveying pipe 3 aligns with the opening of the corresponding straight pipe 4. Generally, the pump has two parallel straight pipes 4; cleaning can be performed sequentially. First, the slider 34 on the outer surface of the conveying pipe 3 moves away from the inlet, causing the slide plate 33 to move to the other side of the chute 32, opening 31 and the inlet open. Then, the pump draws water from the water tank 6 through the guide pipe 7, which delivers clean water to the conveying pipe 3. Because the conveying pipe 3 is curved, combined with… Figure 2Visually, the water guide pipe 7 is located at the relatively high end of the conveying pipe 3. Water entering through this pipe can flow along the curve to the relatively low end and then enter the straight pipe 4. During the flow, some materials on the inner wall can be cleaned. After entering the straight pipe 4, combined with the back-and-forth movement of the hydraulic cylinder 5, the negative pressure of the internal air is changed by the forward pushing and backward contraction motion trajectory, so that the clean water forms a blast force against the conveying pipe 3 under pressure. This blast force can wash away the residue attached to the inner cavity of the conveying pipe 3. At the same time, the scraper sleeve 52 in the straight pipe 4 can scrape off the residue stuck to the inner cavity and send it out of the straight pipe 4 with the water. At this time, some of the water will be discharged from the discharge pipe 2 under pressure, while some will remain in the relatively low part of the conveying pipe 3. At this time, simply open the cap to let the cleaned water flow into the mixing tank 1 through the drain outlet 35, and then open the return water outlet 61 to collect the cleaned wastewater into the water tank 6 and discharge it from the water tank 6.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A clog-resistant concrete pump, comprising a mixing tank (1), wherein a mixing rod is provided inside the mixing tank (1), characterized in that, The mixing tank (1) is provided with a discharge pipe (2) at the front end. The discharge pipe (2) has an opening (21) on its outer surface. The discharge pipe (2) has an annular groove (24) that communicates with the opening (21) in its inner cavity. The annular groove (24) has a detachable partition (25). The mixing tank (1) is provided with a conveying pipe (3). The conveying pipe (3) has two openings (31) on its inner wall. The conveying pipe (3) has a sliding groove (32) that communicates with the opening (31) in its inner wall. The sliding groove (32) has a sliding plate (33) in each of the sliding grooves (32). The outer surface of the conveying pipe (3) has a slider (34) that controls the displacement of the sliding plate (33). The mixing tank (1) is provided with a water tank (6) at the bottom. The conveying pipe (3) and the water tank (6) are connected by a water guide pipe (7). The control box is provided with two parallel straight pipes (4). The straight pipe (4) is provided with a hydraulic cylinder (5). The hydraulic cylinder (5) has a push block (51) at its front end. The push block (51) has a detachable scraper sleeve (52) at its front end.

2. The anti-clogging concrete pump according to claim 1, characterized in that: Both sides of the opening (21) are provided with insertion ports, one of which is provided with a plate (22). The outer surface of the discharge pipe (2) near the opening (21) is provided with a push block (23) to control the movement of the plate (22). The discharge pipe (2) is provided with a reset spring to limit the movement of the push block (23).

3. The anti-clogging concrete pump according to claim 1, characterized in that: The partition (25) is a PET board with a Teflon coating on its surface.

4. The anti-clogging concrete pump according to claim 1, characterized in that: The scraper sleeve (52) is U-shaped, and its outer edge forms a triangular angle with the inner wall of the straight tube (4). The scraper sleeve (52) is made of high-hardness wear-resistant steel or tungsten carbide hard alloy.

5. A clog-resistant concrete pump according to claim 1, characterized in that: Water inlets are provided on both sides of the conveying pipe (3). The water inlets pass through the slide groove (32) and are connected to the water guide pipe (7). The water inlets are connected to the water tank (6) through the water guide pipe (7). The water tank (6) is equipped with a water pump for supplying water to the water guide pipe (7).

6. A clog-resistant concrete pump according to claim 1, characterized in that: The slide plate (33) slides in the groove (32) via the slider (34) to control the opening and closing of the water pipe (7) and the inner cavity of the delivery pipe (3).

7. A clog-resistant concrete pump according to claim 1, characterized in that: The lower end of the conveying pipe (3) is provided with a drain outlet (35), and a screw cap is provided outside the drain outlet (35), and the screw cap is a threaded sealing structure.

8. A clog-resistant concrete pump according to claim 1, characterized in that: A return water inlet (61) is provided between the water tank (6) and the mixing tank (1). A baffle (62) is provided inside the return water inlet (61). A groove for sliding the baffle (62) is provided on one side of the return water inlet (61). A telescopic rod is provided between one side of the baffle (62) and the groove.

Images