Small-size small-volume grouting pump

Abstract

The utility model discloses a small-size small-volume grouting pump which comprises a bottom frame, at least two groups of pumping units which are arranged in parallel are arranged on the bottom frame, a hydraulic system is arranged on each group of pumping units, each pumping unit comprises a main oil cylinder, the main oil cylinder is connected with a conveying cylinder through a water tank, and the main oil cylinder is connected with the conveying cylinder through a hydraulic system. The conveying cylinder is connected with the material suction end of the suction valve shell, and the discharging end of the suction valve shell is connected with the pressure valve shell. The hydraulic system comprises an integrated valve group used for being externally connected with a hydraulic oil source and driving all execution elements of the pumping unit, and the integrated valve group is communicated with the pumping unit through a rubber pipe. The utility model further comprises the lubricating system. The hydraulic system is provided with two sets of complete systems capable of working independently, can work in a single-cylinder mode and can also work at the same time, reversing is stable when the whole machine operates, layout is reasonable, and the requirement for small-space operation can be met.

Description

Technical Field

[0001] The invention relates to the field of filling machinery, in particular to a small-sized small-volume grouting pump. Background Art

[0002] With the country's vigorous promotion of urban subway construction, in order to reduce labor input and reduce operating costs, most companies are now developing grouting pumps to inject a scaling mortar between the shield machine and the tiles after operation. This can not only improve the efficiency of the operation, but also greatly reduce the overall operating costs.

[0003] With the widespread application of grouting pumps, the requirements for the pumping volume of existing grouting pumps are different according to the characteristics of different working conditions. Most of the current grouting pump equipment has the defects of scattered layout of various components such as pumping mechanism, large floor space, and complex pipelines, which is not conducive to limited space operation and is difficult to use and maintain. Therefore, in response to the characteristics of small on-site space and small volume requirements, this small grouting pump with small volume is developed. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a small-sized and small-volume grouting pump.

[0005] The small-sized small-volume grouting pump comprises a base frame (1), the base frame (1) is provided with at least two groups of pumping units arranged in parallel, each group of pumping units is provided with a hydraulic system, the pumping unit comprises a main oil cylinder (2), the main oil cylinder (2) is connected to a delivery cylinder (4) via a water tank (3), the delivery cylinder (4) is connected to a feed end of a suction valve housing (5), the discharge end of the suction valve housing (5) is connected to a pressure valve housing (6), the suction valve housing (5) is provided with an A cone valve oil cylinder (7), and the pressure valve housing (6) is provided with a B cone valve oil cylinder (8); the hydraulic system comprises an integrated valve group (9) for externally connecting a hydraulic oil source and driving each actuator of the pumping unit, the integrated valve The group (9) is connected to the pumping unit (i.e., connected to the main oil cylinder, the water tank, the delivery cylinder, the suction valve housing, the pressure valve housing, the A cone valve oil cylinder, the B cone valve oil cylinder and other actuators via a rubber hose (10); the small-sized small-volume grouting pump also includes a lubrication system, the lubrication system includes a double-line distributor (11) provided at the main oil cylinder (2), the double-line distributor (11) is connected to the A lubrication point (12) provided on the delivery cylinder (4); the lubrication system also includes a manual lubrication pump (13) provided at the suction valve housing (5), the manual lubrication pump (13) is respectively connected to the B lubrication point (14) provided on the A cone valve oil cylinder (7) and the C lubrication point (15) provided on the B cone valve oil cylinder (8).

[0006] Preferably, the integrated valve group comprises a valve body, a plurality of oil ports are provided on the surface of the valve body, a plurality of hydraulic valves are connected to the valve body via threads, and a flow channel connecting the oil ports with the oil ports of the hydraulic valves is provided in the valve body.

[0007] Preferably, the hydraulic valve comprises a relief valve (18), an electromagnetic reversing valve (19), a hydraulic reversing valve A (20), a hydraulic reversing valve B (21), a hydraulic reversing valve C (22), a pressure differential signaling valve A (23), a pressure differential signaling valve B (24), a throttle valve A (25), a throttle valve B (26), a check valve A (27), a check valve B (28), and a throttle valve C (29).

[0008] Preferably, the suction valve housing (5) and the pressure valve housing (6) are both lift valve bodies with working chambers.

[0009] Preferably, the number of the A cone valve oil cylinders (7) is two and they are arranged in parallel on the suction valve housing (5), and the cone valves of the two A cone valve oil cylinders (7) are arranged in the working chamber of the suction valve housing (5) and extend and retract alternately; the number of the B cone valve oil cylinders (8) is two and they are arranged in parallel on the pressure valve housing (6), and the cone valves of the two B cone valve oil cylinders (8) are arranged in the working chamber of the pressure valve housing (6) and extend and retract alternately.

[0010] Preferably, a ball valve (16) is provided on the rubber hose (10), and a pipe joint (17) is provided at the end of the rubber hose (10).

[0011] Preferably, the discharge end of the pressure valve housing (6) is connected to the feed pipe, and the feed end of the suction valve housing (5) is connected to the feed pipe (30).

[0012] The utility model is further described below:

[0013] The small-sized small-volume grouting pump of the utility model is mainly composed of four parts: a pumping unit, a hydraulic system, a lubrication system, and a chassis. The hydraulic oil source of the equipment is provided from the outside. After entering the integrated valve group of the unit, the hydraulic valves of the valve group are actuated to drive the various actuators, and the piston in the concrete cylinder is driven by the oil cylinder to complete the function of the piston sucking and punching the material in the concrete cylinder. Among them, taking the main oil cylinder as an example, the hydraulic oil enters the integrated valve group, and the main oil cylinder is driven by the reversing of the hydraulic valve of the integrated valve group. The main oil cylinder is connected to the piston in the delivery cylinder. When the main oil cylinder moves, it drives the delivery cylinder piston to realize free reciprocating linear motion.

[0014] The integrated valve group in the hydraulic system is composed of an integrated valve body, and all the hydraulic valves of the equipment are integrated on the valve. All the oil circuits of the integrated valve group are drilled inside the valve body, and each hydraulic valve is installed by threaded insertion. The hydraulic valves include reversing valves, relief valves, throttle valves, check valves, solenoid reversing valves, signaling valves, etc. Compared with the traditional reversing valve group, which only superimposes the reversing valve on the valve block and installs it in a plate-type manner, it not only has the advantages of high integration of the valve group and reliable sealing of the oil circuit, but the threaded installation method is also easier to install and maintain.

[0015] The lubrication system is mainly divided into automatic lubrication part and manual lubrication part. The manual lubrication system mainly protects the O-ring in the middle of the guide sleeve of the lifting valve cylinder during operation. During long-term operation, the manual lubrication pump is used to lubricate the moving pair of the cone valve cylinder; the automatic lubrication system is mainly used to lubricate the concrete piston, so that the concrete piston forms a lubricating film when it runs in the delivery cylinder, which guarantees the service life of the concrete piston for a long time. The delivery cylinder piston is lubricated by a double-line distributor. When the piston returns to the lubrication point at the end of the water tank, the double-line distributor works to inject hydraulic oil into the piston surface for lubrication. Compared with the traditional way of adding lubricating oil through a grease nipple, this lubrication system not only prolongs the service life of the equipment, but also greatly improves the efficiency. Lubrication points are set in the core components of the pumping unit, such as the delivery cylinder lubrication point, to strengthen the lubrication protection of key parts. At present, domestic and foreign manufacturers generally do not adopt this lubrication mode. The suction valve housing and the pressure valve housing can be selected as a lifting valve with a working chamber, and the cone valve of the cone valve cylinder is set in the working chamber to control the opening and closing and connection of the valve body. The suction end of the suction valve housing is connected to the main oil cylinder, the feeding end of the suction valve housing is connected to the feed pipe, and the discharge end of the suction valve housing is connected to the pressure valve housing. The cone valve cylinder is arranged on the suction valve housing. When the two cone valve cylinders work alternately, the materials from the feed pipe are sucked into the suction valve housing under the suction action of the main oil cylinder; the discharge end of the suction valve housing is connected to the pressure valve body. Under the pumping action of the main oil cylinder and the cooperation of the cone valve cylinder on the pressure valve housing, the materials are pumped into the feed pipe through the pressure valve housing, thereby completing the pumping of the materials. The cone valve cylinder groups are respectively arranged on the suction valve housing and the pressure valve housing. When one of the cone valve oil pump groups in each group is extended, the other retracts, and they are always in an alternating state, thereby ensuring the continuity of the pumping material, so as to achieve the continuous state of suction and feeding.

[0016] The whole machine of this grouting pump has a compact structure, reasonable layout, and convenient maintenance. The delivery volume per hour can reach 10m³. Since the whole machine has two complete and independently working systems, it can be operated by a single cylinder or a double cylinder. While meeting the volume, the lower the frequency of reversing, the longer the service life of the wearing parts for delivering the same amount of slurry. Since the linear speed of the whole machine's oil cylinder is low, the distance between the signal port installed on the oil cylinder is long, and the pressure differential valve and the reversing valve are directly integrated in the valve block, the distance is short. Therefore, the reversing impact is small when the whole machine is reversed, and it works almost silently. If you need to increase the pumping volume, you only need to increase the external oil source. The oil source of the whole pumping system can be increased to 120L / min.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The small-sized small-volume grouting pump of the utility model integrates various components of the grouting pump into a whole on the basis of meeting the flow rate and pressure hydraulic system requirements for small space operations, so that it has the characteristics of compact structure, reasonable layout and high working reliability; the whole machine has smooth switching during operation, no obvious switching impact and low noise; it has two complete and independently working systems, which can work either as a single cylinder or at the same time, and the two hydraulic systems are also completely interchangeable, making it more convenient to use and maintain; if it is necessary to increase the pumping volume, it only needs to increase the external oil source, and the oil source of the whole pumping system can be increased to 120L / min. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a small-sized small-volume grouting pump of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a pumping unit of a small-sized small-volume grouting pump of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the hydraulic system of the small-sized small-volume grouting pump of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the lubrication system of the small-sized small-volume grouting pump of the utility model;

[0023] Figure 5 This is a working principle diagram of a small-sized small-volume grouting pump of the utility model.

[0024] In the figure: 1. chassis; 2. main oil cylinder; 3. water tank; 4. delivery cylinder; 5. suction valve housing; 6. pressure valve housing; 7. A cone valve oil cylinder; 8. B cone valve oil cylinder; 9. integrated valve group; 10. hose; 11. double-line distributor; 12. A lubrication point; 13. manual lubrication pump; 14. B lubrication point; 15. C lubrication point; 16. ball valve; 17. pipe joint; 18. relief valve; 19. solenoid reversing valve; 20. A hydraulic reversing valve; 21. B hydraulic reversing valve; 22. hydraulic reversing valve; 23. A pressure differential signaling valve; 24. B pressure differential signaling valve; 25. A throttle valve; 26. B throttle valve; 27. A check valve; 28. B check valve; 29. ​​C throttle valve; 30. feed pipe. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figures 1 to 5 The small-sized small-volume grouting pump comprises a chassis 1, on which at least two groups of pumping units arranged in parallel are arranged, each group of pumping units is provided with a hydraulic system, the pumping unit comprises a main oil cylinder 2, the main oil cylinder 2 is connected to a delivery cylinder 4 through a water tank 3, the delivery cylinder 4 is connected to a feed end of a suction valve housing 5, the discharge end of the suction valve housing 5 is connected to a pressure valve housing 6, the suction valve housing 5 is provided with an A cone valve oil cylinder 7, the pressure valve housing 6 is provided with a B cone valve oil cylinder 8; the hydraulic system comprises a hydraulic oil source for external connection and a drive The integrated valve group 9 of each actuator of the dynamic pumping unit is connected to the pumping unit through a hose 10; the small-sized small-volume grouting pump also includes a lubrication system, which includes a double-line distributor 11 arranged at the main oil cylinder 2, and the double-line distributor 11 is connected to the A lubrication point 12 arranged on the delivery cylinder 4; the lubrication system also includes a manual lubrication pump 13 arranged at the suction valve housing 5, and the manual lubrication pump 13 is respectively connected to the B lubrication point 14 arranged on the A cone valve cylinder 7 and the C lubrication point 15 arranged on the B cone valve cylinder 8.

[0027] The integrated valve group includes a valve body, a plurality of oil ports are provided on the surface of the valve body, a plurality of hydraulic valves are connected to the valve body by threads, and a flow channel is provided in the valve body to connect the oil ports of the hydraulic valves. The hydraulic valve includes a relief valve 18, an electromagnetic reversing valve 19, an A hydraulic reversing valve 20, a B hydraulic reversing valve 21, a C hydraulic reversing valve 22, an A pressure differential signaling valve 23, a B pressure differential signaling valve 24, an A throttle valve 25, a B throttle valve 26, an A check valve 27, a B check valve 28, and a C throttle valve 29. The suction valve housing 5 and the pressure valve housing 6 are both lift valve bodies with working chambers. There are two A cone valve oil cylinders 7 arranged in parallel on the suction valve housing 5, and the cone valves of the two A cone valve oil cylinders 7 are arranged in the working chamber of the suction valve housing 5 and extend and retract alternately; there are two B cone valve oil cylinders 8 arranged in parallel on the pressure valve housing 6, and the cone valves of the two B cone valve oil cylinders 8 are arranged in the working chamber of the pressure valve housing 6 and extend and retract alternately. A ball valve 16 is arranged on the hose 10, and a pipe joint 17 is arranged at the end of the hose 10. The discharge end of the pressure valve housing 6 is connected to the feed pipe, and the feed end of the suction valve housing 5 is connected to the feed pipe 30.

Claims

1. A small-sized small-volume grouting pump, characterized in that: The small-sized small-volume grouting pump comprises a base frame (1), the base frame (1) is provided with at least two groups of pumping units arranged in parallel, each group of pumping units is provided with a hydraulic system; the pumping unit comprises a main oil cylinder (2), the main oil cylinder (2) is connected to a delivery cylinder (4) via a water tank (3), the delivery cylinder (4) is connected to the suction end of a suction valve housing (5), the discharge end of the suction valve housing (5) is connected to a pressure valve housing (6), the suction valve housing (5) is provided with an A cone valve oil cylinder (7), and the pressure valve housing (6) is provided with a B cone valve oil cylinder (8); the hydraulic system comprises a drive for connecting an external hydraulic oil source and a drive. The integrated valve group (9) of each actuator of the pumping unit is connected to the pumping unit via a hose (10); the small-sized small-volume grouting pump also includes a lubrication system, the lubrication system includes a double-line distributor (11) provided at the main oil cylinder (2), the double-line distributor (11) is connected to a lubrication point A (12) provided on the delivery cylinder (4); the lubrication system also includes a manual lubrication pump (13) provided at the suction valve housing (5), the manual lubrication pump (13) is respectively connected to a lubrication point B (14) provided on the A cone valve oil cylinder (7) and a lubrication point C (15) provided on the B cone valve oil cylinder (8).

2. The small-sized small-volume grouting pump according to claim 1, characterized in that: The integrated valve group includes a valve body, a plurality of oil ports are arranged on the surface of the valve body, a plurality of hydraulic valves are connected to the valve body via threads, and a flow channel is arranged in the valve body to connect the oil ports with the oil ports of the hydraulic valves.

3. The small-sized small volume grouting pump according to claim 2, characterized in that: The hydraulic valve comprises a relief valve (18), an electromagnetic reversing valve (19), an A hydraulic reversing valve (20), a B hydraulic reversing valve (21), a C hydraulic reversing valve (22), an A pressure differential signaling valve (23), a B pressure differential signaling valve (24), an A throttle valve (25), a B throttle valve (26), an A check valve (27), a B check valve (28), and a C throttle valve (29).

4. The small-sized small-volume grouting pump according to claim 1, characterized in that: The suction valve housing (5) and the pressure valve housing (6) are both lift valve bodies with working chambers.

5. The small-sized small-volume grouting pump according to claim 1, characterized in that: The two A cone valve oil cylinders (7) are arranged in parallel on the suction valve housing (5), and the cone valves of the two A cone valve oil cylinders (7) are arranged in the working chamber of the suction valve housing (5) and extend and retract alternately; the two B cone valve oil cylinders (8) are arranged in parallel on the pressure valve housing (6), and the cone valves of the two B cone valve oil cylinders (8) are arranged in the working chamber of the pressure valve housing (6) and extend and retract alternately.

6. The small-sized small volume grouting pump according to claim 1, characterized in that: The rubber hose (10) is provided with a ball valve (16), and the end of the rubber hose (10) is provided with a pipe joint (17).

7. The small-sized small-volume grouting pump according to claim 1, characterized in that: The discharge end of the pressure valve housing (6) is in communication with the feed pipe, and the feed end of the suction valve housing (5) is in communication with the feed pipe (30).

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