Slurry pump

Abstract

The invention provides a slurry pump. The working efficiency of the slurry pump is improved through innovative structural design, and the service life of the slurry pump is prolonged. The slurry pump comprises slurry pumping assemblies which are symmetrically arranged left and right, and the slurry pumping assemblies achieve suction and discharge of slurry through expansion and contraction of liquid bags. The hydraulic transmission assembly drives the liquid bag to act. Through the linkage assembly, the left liquid bag and the right liquid bag achieve interactive stretching, when the liquid bag on one side pumps slurry, the liquid bag on the other side sucks the slurry, and continuous conveying of the slurry is guaranteed. By means of the design, the sliding friction problem of a traditional slurry pump is avoided, slurry is prevented from entering the liquid bag, and the durability and operation stability of equipment are greatly improved. The guide assembly prevents external leakage through a sealing structure, and the safety of the system is improved. The slurry conveying device is simple in structure and high in adaptability, the problem of abrasion in the prior art can be effectively solved, and efficient and continuous slurry conveying is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mud pumps, and in particular to a mud pump which realizes continuous mud pumping by hydraulically driving a liquid bag. Background Art

[0002] The working principle of the existing piston mud pump is to drive the crankshaft of the pump to rotate through the power machine, and the crankshaft drives the piston to reciprocate in the cylinder sleeve through the connecting rod to suck and discharge the mud. Due to the sliding friction between the piston and the cylinder sleeve, the hard particles in the mud are easy to enter the friction pair, causing the wear of the piston and the cylinder sleeve, thereby affecting the service life of the mud pump. Frequent maintenance and replacement not only reduce the working efficiency of the equipment, but also increase the operating cost. Therefore, the key issue in the prior art is: how to solve the friction problem between the piston and the cylinder sleeve through innovative structures and achieve continuous and smooth mud transportation. Summary of the invention

[0003] The purpose of the present invention is to provide an improved mud pump structure, which uses a liquid bag as a core conveying component, and realizes continuous mud pumping through the interactive expansion and contraction of the left and right liquid bags. The linkage component ensures that when one liquid bag pumps mud, the other liquid bag sucks mud, and the two liquid bags are mutually in and out, achieving the effect of continuous mud pumping.

[0004] To achieve the above object, the present invention provides a mud pump, comprising the following components: Pump slurry assembly: including cylinder body, liquid bag, cylinder cover, oil channel, slurry inlet valve and slurry outlet valve, used to realize the suction and discharge of mud. The left and right pump slurry assemblies are respectively configured, and the left and right pump slurry assemblies work alternately to realize continuous mud pumping.

[0005] Linkage assembly: used to coordinate the interactive expansion and contraction of the left and right liquid bags, so that when one liquid bag is pumping slurry, the other liquid bag is sucking slurry, ensuring continuous pumping of slurry. The linkage assembly can be composed of multiple guide wheels, wire rope pulleys, gear racks or levers.

[0006] Hydraulic source: The expansion and contraction of the bladder are driven by hydraulic oil to control the suction and discharge of mud.

[0007] Hydraulic transmission assembly: Isolate the hydraulic source from the liquid capsule to better protect them and prevent damage to the other party when either party fails. During production, by adopting different cylinder diameter ratios between the drive cylinder and the pump cylinder, the hydraulic flow or hydraulic pressure can be amplified to adapt to different working conditions.

[0008] Guide assembly: includes guide sleeve and pull rod, and the sealing structure between the two, to prevent external impurities from entering the system and ensure the airtightness and safety of the hydraulic system.

[0009] Specific structure and working principle 1. Left and right pump slurry components: Pump slurry components are arranged side by side on both sides of the pump, and the expansion and contraction of the liquid bag is controlled by hydraulic pressure. The linkage component ensures that when the left liquid bag pumps slurry, the right liquid bag sucks slurry synchronously, and vice versa. Through this alternating working mode, continuous and stable mud transportation is achieved.

[0010] 2. Linkage assembly: used to coordinate the actions of the left and right bladders. When one bladder expands to discharge the mud, the other bladder contracts to absorb the mud, ensuring the continuous flow of the mud. The linkage assembly can be realized by using multiple guide wheels, wire rope pulleys, gear racks or levers.

[0011] 3. Guide assembly: A sealing structure is used between the guide sleeve and the pull rod to prevent leakage of hydraulic oil and ensure controlled operation of the bladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only used to exemplify the technical solution of the present invention and do not constitute a limitation on the protection scope of the present invention.

[0013] Figure 1 : It shows the basic structure of the mud pump of the present invention, and shows the left and right liquid bags and their coordinated working state.

[0014] Figure 2 : Demonstrates the working principle of adding hydraulic transmission components.

[0015] In the figure: 1. slurry discharge valve, 2. cylinder body, 3. pumping chamber, 4. bellows, 5. drive chamber, 6. hydraulic oil pipe, 7. cylinder head, 8. oil channel, 9. slurry inlet valve, 10. pull rod, 11. hydraulic source, 12. guide sleeve, 13. guide wheel frame, 14. guide belt, 15. guide wheel, 16. drive cylinder, 17. piston group, 18. pump cylinder. DETAILED DESCRIPTION

[0016] Embodiment 1. See attached Figure 1 The present invention provides a mud pump, comprising the following components: (1). Pump slurry assembly: Slurry discharge valve (1): used to control the discharge of slurry from the pump; Cylinder body (2) and cylinder head (7): forming a closed space for storing and transporting mud; Liquid sac (4): It realizes the suction and discharge of mud by expansion and contraction. The liquid sac is arranged on the left and right sides respectively. Slurry inlet valve (9): controls slurry suction; Oil channel (8): used to transport hydraulic oil to drive the action of the bladder.

[0017] (2). Linkage components: Guide wheel frame (13), guide wheel (15), guide belt (14): ensure stable movement of the pull rod; Pull rod (10): used to link the synchronous extension and contraction of the liquid bladder, so that the liquid bladders on the left and right sides work interactively to ensure continuous pumping of mud; it can be composed of a gear set, a wire rope pulley set or a lever.

[0018] (3) Guidance components: The sealing structure between the guide sleeve (12) and the pull rod prevents the hydraulic oil from leaking out and ensures the airtightness of the hydraulic system.

[0019] (4) Hydraulic source: A hydraulic power source is provided to directly drive the liquid bladder or to drive the liquid bladder through a hydraulic transmission assembly.

[0020] Example 2. See attached Figure 2 , based on Example 1, a hydraulic transmission component is added: The hydraulic transmission assembly includes a drive cylinder (16), a piston assembly (17), and a pump cylinder (18), and drives the expansion and contraction of the liquid capsule through hydraulic oil. The hydraulic source is isolated from the liquid capsule, and the hydraulic source and the liquid capsule are better protected to prevent the other from being damaged when either fails.

[0021] Advantageous Effects of the Invention The advantages of the mud pump of the present invention include: 1. The present invention uses a liquid bag to replace the piston cylinder sleeve structure, completely eliminating the problem of traditional sliding friction and avoiding the wear of the friction pair by mud particles. The left and right are equipped with independent pump slurry components, and the interactive work of the liquid bag is realized through the action of the linkage component. When one liquid bag pumps slurry, the other one sucks slurry, ensuring the continuous pumping of mud.

[0022] 2. The linkage assembly ensures that the bladder is always in a positive pressure state, effectively preventing mud from entering the hydraulic system when the bladder is damaged.

[0023] 3. The sealing structure of the guide assembly ensures the safety of the hydraulic system, prevents leakage and improves the working reliability of the equipment.

[0024] 4. The hydraulic transmission assembly isolates the hydraulic source from the fluid bag to better protect the hydraulic source and the fluid bag.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0026] The mud described in the present invention is a representative of a solid-liquid two-phase mixture, and fluids such as sewage and mortar are all pumped objects thereof.

Claims

1. A mud pump, characterized in that: The mud pump includes left and right arranged slurry pumping assemblies, and the slurry pumping assemblies include a cylinder body, a liquid bag, a cylinder cover, an oil channel, a slurry inlet valve, a slurry outlet valve and a linkage assembly. Driven by a hydraulic source, the liquid bag realizes the suction and discharge of mud through volume changes. The linkage assembly is used to realize the synchronous interactive expansion and contraction of the left and right liquid bags. When one liquid bag pumps slurry, the other liquid bag absorbs slurry, thereby ensuring the continuous pumping of mud.

2. The mud pump according to claim 1, characterized in that: The mud pump also includes a hydraulic transmission component, which drives the expansion and contraction of the liquid bag through hydraulic oil, adopts different cylinder diameter ratios of the driving cylinder and the pump cylinder, and can amplify the hydraulic flow or amplify the hydraulic pressure to adapt to different working conditions.

3. The mud pump according to claim 1 or 2, characterized in that: The linkage assembly may adopt mechanisms such as multiple guide wheels, a wire rope pulley set, a gear set or a lever to achieve synchronous interactive expansion and contraction of the liquid capsule.

4. The mud pump according to any one of claims 1 to 3, characterized in that: A sealing structure is provided between the guide sleeve and the pull rod to prevent leakage of hydraulic oil.

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