A hydraulic pumping equipment with integrated push cylinder and control valve block

Abstract

The present invention discloses a hydraulic pumping equipment with an integrated push cylinder and a control valve block, including an integrated control valve block, a frame, a base, an integrated push cylinder, a guide flange, a feed hopper, a conveying cylinder, a hydraulic knife gate valve, and a discharge port. There are two channels inside the piston rod of the integrated push cylinder, which are respectively connected with the integrated control valve block and the rodless chamber / rod chamber of the push cylinder. The front end of the cylinder barrel of the integrated push cylinder is connected to the crushing piston head. The electrical system drives the hydraulic oil into the rodless chamber / rod chamber by adjusting the integrated control valve block, so that the cylinder barrel and the crushing piston head reciprocate in the hopper and the conveying cylinder to achieve the pumping purpose. The cylinder barrel of the integrated push cylinder of the present invention serves as both a hydraulic actuator and a material pumping mechanism, which greatly reduces middleware, makes the structure more compact, saves space, facilitates maintenance, and improves conveying efficiency. At the same time, the integrated control valve block is connected to the oil inlet end of the push cylinder piston rod, reducing hydraulic pipelines and reducing pressure loss along the pipeline, reducing energy consumption, and improving economy.

Description

Technical Field

[0001] The present invention relates to logistics conveying equipment, and in particular to a hydraulic pumping equipment with an integrated push cylinder and a control valve block. Background Art

[0002] Compared with traditional material conveying technologies such as screw conveyors, scraper conveyors, belt conveyors, etc., hydraulic pumping equipment has excellent characteristics such as large processing capacity, long conveying distance, strong material adaptability, and closed and odor-free. Therefore, single-cylinder hydraulic pumping equipment is widely used in the environmental protection industry, especially in the treatment of sludge, kitchenware, and hazardous waste. The operation of single-cylinder hydraulic pumping equipment is a process in which the hydraulic station is driven by a motor to allow hydraulic oil to enter the cylinder to form a thrust, and the material in the feed hopper is transported to the designated destination through a pipeline. The existing hydraulic pumping equipment is composed of a hydraulic cylinder, a conveying cylinder, a conveying piston cylinder, a water tank, a hopper, a gate valve and other structures, but it has defects such as complex structure, high energy consumption, large space occupation, and inconvenient maintenance, such as the tubular single plunger pump disclosed in patent document CN105889011A. Summary of the invention

[0003] In order to solve at least one technical problem existing in the above-mentioned background technology, the present invention provides a hydraulic pumping equipment with an integrated push cylinder and a control valve block.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A hydraulic pumping equipment with an integrated push cylinder and a control valve block, comprising a control valve block, an integrated push cylinder, a feed hopper, a delivery cylinder and a hydraulic knife gate valve; wherein,

[0006] The hydraulic knife gate valve is installed in the delivery cylinder;

[0007] The feed hopper is arranged between the integrated push cylinder and the conveying cylinder, and the three are located on the same axis and are interconnected;

[0008] The integrated push cylinder comprises a piston rod, a cylinder barrel and a crushing piston head; the beginning of the piston rod is assembled in the cylinder barrel in an interference fit manner, dividing the cylinder barrel cavity into two parts, one part is a rodless cavity, and the other part is a rod cavity; the end of the piston rod is located outside the cylinder barrel, and a first oil port and a second oil port are provided in the end surface of the end of the piston rod, the first oil port is connected to the rodless cavity, and the second oil port is connected to the rod cavity; the crushing piston head is provided at the end of the cylinder barrel away from the end of the piston rod;

[0009] The control valve block is used to control the hydraulic oil to enter the first oil port and the second oil port to control the cylinder movement direction of the integrated push cylinder; the control valve block is also used to control the hydraulic oil to enter the hydraulic knife gate valve to control the opening and closing state of the hydraulic knife gate valve.

[0010] Furthermore, the control valve block includes an oil circuit block, a first reversing valve and a second reversing valve;

[0011] The oil circuit block is provided with a main oil pump connecting oil port, an auxiliary oil pump connecting oil port, a knife gate valve reversing oil port and an integrated push cylinder reversing oil port; the integrated push cylinder reversing oil port is connected with the first oil port and the second oil port, the main oil pump connecting oil port is connected with the first reversing valve, the first reversing valve controls the oil circuit direction of the integrated push cylinder reversing oil port to control the reciprocating movement of the cylinder barrel; the auxiliary oil pump connecting oil port is connected with the second reversing valve, the second reversing valve controls the oil circuit direction of the knife gate valve reversing oil port to control the opening and closing state of the hydraulic knife gate valve.

[0012] Furthermore, the control valve block also includes a first overflow valve, a second overflow valve and a one-way valve; the first overflow valve is connected in the pipeline between the main oil pump connecting oil port and the first reversing valve; the second overflow valve is connected in the pipeline between the auxiliary oil pump connecting oil port and the second reversing valve; the one-way valve is arranged in the pipeline between the auxiliary oil pump connecting oil port and the second reversing valve.

[0013] Furthermore, the first reversing valve, the second reversing valve, the first overflow valve, the second overflow valve and the one-way valve are all integrated and installed on the oil circuit block, and the oil circuit block is installed on the end face of the piston rod so that the integrated push cylinder reversing oil port is directly connected to the first oil port and the second oil port.

[0014] Furthermore, the connection between the integrated push cylinder reversing oil port and the first oil port and the second oil port is sealed with an O-ring.

[0015] Furthermore, the hydraulic pumping equipment with an integrated push cylinder and a control valve block also includes a guide flange, which is arranged in the feed hopper, and the inner hole of the guide flange is sleeved on the cylinder barrel of the integrated push cylinder.

[0016] Furthermore, a dust ring, a sealing ring and a grease channel are provided between the inner hole of the guide flange and the cylinder barrel of the integrated push cylinder.

[0017] Furthermore, the inner and outer surfaces of the cylinder barrel and the inner surface of the delivery cylinder are both hard chrome plated.

[0018] Furthermore, the crushing piston head is made of alloy steel and is detachable and replaceable.

[0019] Furthermore, the equipment operates in three stages:

[0020] Preparation stage: The system pumps hydraulic oil from the main oil pump connection port and the auxiliary oil pump connection port into the integrated control valve block, driving the hydraulic knife gate valve to be in a closed state, and the material flows into the feed hopper and the conveying cylinder;

[0021] Pushing stage: drive the first reversing valve to control the hydraulic oil to enter the rodless chamber from the first oil port to drive the cylinder barrel and the crushing piston head to move rightward until the crushing piston head reaches the inlet of the conveying cylinder, drive the second reversing valve to control the oil circuit to open the hydraulic knife gate valve, and the material begins to be crushed, squeezed and pumped. The crushing piston head continues to move rightward to the outlet of the conveying cylinder, and drive the second reversing valve to control the oil circuit to close the hydraulic knife gate valve;

[0022] Return stage: drive the first reversing valve to control the hydraulic oil to enter the rod chamber from the second oil port to drive the cylinder and the crushing piston head to move left until the crushing piston head returns to the initial position. The equipment completes a cycle of material pumping.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The hydraulic pumping equipment with an integrated push cylinder and a control valve block provided by the present invention has a cylinder barrel of the integrated push cylinder serving as both a hydraulic actuator and a material pumping mechanism, which greatly reduces redundant intermediate parts, makes the structure more compact, saves floor space, facilitates maintenance, and improves conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a hydraulic pumping equipment with an integrated push cylinder and a control valve block provided in an embodiment of the present invention;

[0026] Figure 2 A schematic cross-sectional view of a hydraulic pumping equipment with an integrated push cylinder and a control valve block provided by an embodiment of the present invention;

[0027] Figure 3 It is the front view of the control valve block;

[0028] Figure 4 This is the rear view of the control valve block;

[0029] Figure 5 The hydraulic principle diagram of the hydraulic pumping equipment with integrated push cylinder and control valve block of the present invention;

[0030] Figure 6 It is a cross-sectional schematic diagram of the integrated push cylinder;

[0031] In the figure: 1- control valve block; 2- frame; 3- base; 4- integrated push cylinder; 5- guide flange; 6- feed hopper; 7- delivery cylinder; 8- hydraulic knife gate valve; 9- discharge port; 1.1- oil circuit block; 1.2- first overflow valve; 1.3- second overflow valve; 1.4- one-way valve; 1.5- electro-hydraulic reversing valve 1; 1.6- electromagnetic reversing valve; 1.7- main oil pump connecting oil port; 1.8- auxiliary oil pump connecting oil port; 1.9- knife gate valve reversing oil port; 1.10- integrated push cylinder reversing oil port; 1.11- oil return port; 4.1- piston rod; 4.2- cylinder barrel; 4.3 rod chamber; 4.4 rodless chamber; 4.5 crushing piston head; 4.6 first oil port; 4.7 second oil port. DETAILED DESCRIPTION

[0032] Example:

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a signal connection; it can be directly connected, or indirectly connected through an intermediate medium, which can be said to be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] See also Figure 1-6 As shown, the hydraulic pumping equipment with an integrated push cylinder and a control valve block provided in this embodiment mainly includes a control valve block 1, an integrated push cylinder 4, a feed hopper 6, a delivery cylinder 7 and a hydraulic knife gate valve 8.

[0036] The hydraulic knife gate valve 8 is installed in the conveying cylinder 7, that is, by controlling the opening and closing of the hydraulic knife gate valve 8, the opening and closing of the discharge port 9 of the conveying cylinder 7 can be controlled. The feed hopper 6 is arranged between the integrated push cylinder 4 and the conveying cylinder 7. The three are located on the same axis and are interconnected. The integrated push cylinder 4 is mainly used to push the material in the feed hopper 6 to the discharge port 9 of the conveying cylinder 7 for discharge.

[0037] Specifically, Figure 6 As shown, the integrated push cylinder 4 includes a piston rod 4.1, a cylinder barrel 4.2 and a crushing piston head 4.5; wherein, the starting end of the piston rod 4.1 is assembled in the cylinder barrel 4.2 in an interference fit manner, dividing the cylinder barrel cavity into two parts, one part is a rodless cavity 4.4, and the other part is a rod cavity 4.3; the end of the piston rod 4.1 is located outside the cylinder barrel 4.2, and a first oil port 4.6 and a second oil port 4.7 are provided in the end face of the end of the piston rod 4.1. Through two channels inside the piston rod 4.1, the first oil port 4.6 is connected to the rodless cavity 4.4, and the second oil port 4.7 is connected to the rod cavity 4.3; the crushing piston head 4.5 is provided at the end of the cylinder barrel 4.2 away from the end of the piston rod 4.1, so as to crush and push materials.

[0038] The control valve block 1 is used to control the hydraulic oil to enter the first oil port 4.6 and the second oil port 4.7. When the hydraulic oil enters the first oil port 4.6 to the rodless chamber 1.4, the cylinder 4.2 is pushed to move to the right, and when the hydraulic oil enters the second oil port 4.7 to the rod chamber 4.3, the cylinder 4.2 is pushed to move to the left, thereby controlling the crushing piston head 4.5 to follow the cylinder 4.2 to reciprocate in the feed hopper 6 and the conveying cylinder 7. In addition, the control valve block 1 is also used to control the hydraulic oil to enter the hydraulic knife gate valve 8. When the hydraulic oil enters the hydraulic knife gate valve 8, the hydraulic knife gate valve 8 is opened, otherwise it is closed.

[0039] It can be seen that the hydraulic pumping equipment with an integrated push cylinder and a control valve block provided in this embodiment has a cylinder barrel of an integrated push cylinder that serves as both a hydraulic actuator and a material pumping mechanism, which greatly reduces redundant intermediate parts, makes the structure more compact, saves floor space, facilitates maintenance, and improves transportation efficiency.

[0040] Specifically, the control valve block 1 includes an oil circuit block 1.1, a first reversing valve 1.5 and a second reversing valve 1.6; the oil circuit block 1.1 is provided with a main oil pump connecting oil port 1.7, an auxiliary oil pump connecting oil port 1.8, a knife gate valve reversing oil port 1.9, an integrated push cylinder reversing oil port 1.10 and an oil return port 1.11; the integrated push cylinder reversing oil port 1.10 is connected to the first oil port 4.6 and the second oil port 4.7, the main oil pump connecting oil port 1.7 is connected to the first reversing valve 1.5, and the first reversing valve 1.5 controls the oil circuit direction of the integrated push cylinder reversing oil port 1.10, so that the reciprocating movement of the control cylinder 4.2 can be realized; the auxiliary oil pump connecting oil port 1.8 is connected to the second reversing valve 1.6, and the second reversing valve 1.6 controls the oil circuit direction of the knife gate valve reversing oil port 1.9, so that the opening and closing state of the hydraulic knife gate valve 8 can be controlled.

[0041] In addition, the control valve block 1 further comprises a first relief valve 1.2, a second relief valve 1.3 and a check valve 1.4; the first relief valve 1.2 is connected to the pipeline between the main oil pump connecting oil port 1.7 and the first reversing valve 1.5; the second relief valve 1.3 is connected to the pipeline between the auxiliary oil pump connecting oil port 1.8 and the second reversing valve 1.6; thus, the first relief valve 1.2 and the second relief valve 1.3 can play the role of system pressure regulation and pressure relief protection. The check valve 1.4 is arranged in the pipeline between the auxiliary oil pump connecting oil port 1.8 and the second reversing valve 1.6 to prevent the hydraulic oil from flowing back.

[0042] Preferably, the first reversing valve 1.5, the second reversing valve 1.6, the first overflow valve 1.2, the second overflow valve 1.3 and the one-way valve 1.4 are all integrated and installed on the oil circuit block, that is, the entire control valve block is integrated and the structure is more compact; in addition, the oil circuit block 1.1 is installed on the end face of the piston rod 4.1, so that the integrated push cylinder reversing oil port 1.10 is directly connected to the first oil port 4.6 and the second oil port 4.7, thereby reducing the hydraulic pipeline and reducing the pressure loss along the pipeline, reducing energy consumption and improving economy.

[0043] Specifically, the connection between the integrated push cylinder reversing oil port 1.10 and the first oil port 4.6 and the second oil port 4.7 is sealed with an O-ring to ensure sealing.

[0044] Preferably, the hydraulic pumping equipment with an integrated push cylinder and a control valve block further includes a frame 2, a base 3 and a guide flange 5; the integrated push cylinder 4 is installed inside the frame 2 and connected to the right side of the left side plate of the frame 2 through a flange. The frame 2, the feed hopper 6 and the hydraulic knife gate valve 8 are all fixed on the base 3 and installed in a straight line. The guide flange 5 is arranged at the left end of the feed hopper 6. At the same time, the inner hole of the guide flange 5 is sleeved on the cylinder barrel 4.2 of the integrated push cylinder 4, and a dust ring, a sealing ring and a grease channel are provided between the inner hole of the guide flange 5 and the cylinder barrel of the integrated push cylinder to provide sealing and guiding functions.

[0045] Specifically, the inner and outer surfaces of the cylinder barrel 4.2 and the inner surface of the delivery cylinder are both hard chrome plated; the crushing piston head 4.5 is made of high-hardness alloy steel and can be disassembled and replaced. The first reversing valve 1.5 is an electro-hydraulic reversing valve, the second reversing valve 1.6 is an electromagnetic reversing valve, and the second overflow valve 1.3 is an electromagnetic overflow valve.

[0046] Combination Figure 5 As shown in the hydraulic principle, the material pumping process of this equipment is specifically divided into three stages:

[0047] Preparation stage: The system pumps hydraulic oil from the main oil pump connecting port 1.7 and the auxiliary oil pump connecting port 1.8 into the integrated control valve block 1, all solenoid valves are in the de-energized state, the material flows into the feed hopper 6 and the conveying cylinder 7, and the hydraulic knife gate valve 8 is in the closed state.

[0048] Pushing stage: the electrical system drives the first reversing valve 1.5 (YV3) to be energized, controls the hydraulic oil to enter the rodless chamber 4.4 from the first oil port 4.6, drives the cylinder barrel 4.2 of the integrated push cylinder and the crushing piston head 4.5 to move rightward, until the crushing piston head 4.5 reaches the inlet of the conveying cylinder 7, the electrical system drives the second reversing valve 1.6 (YV4) to be energized, controls the oil circuit to open the hydraulic knife gate valve 8, the material begins to be crushed, squeezed and pumped, the crushing piston head 4.5 continues to move rightward to the outlet of the conveying cylinder 7, the electrical system drives the second reversing valve 1.6 (YV5), controls the oil circuit to close the hydraulic knife gate valve 8.

[0049] Return stage: the electrical system drives the first reversing valve 1.5 (YV2) to be energized, controls the hydraulic oil to enter the rod chamber 4.3 from the second oil port 4.7, and drives the cylinder 4.2 and the crushing piston head 4.5 to move leftward until the crushing piston head 4.5 returns to the initial position.

[0050] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic pumping equipment with an integrated push cylinder and a control valve block, It is characterized in that It includes a control valve block, an integrated push cylinder, a feed hopper, a conveying cylinder and a hydraulic knife gate valve; among which, The hydraulic knife gate valve is installed in the delivery cylinder; The feed hopper is arranged between the integrated push cylinder and the conveying cylinder, and the three are located on the same axis and are interconnected; The integrated push cylinder comprises a piston rod, a cylinder barrel and a crushing piston head; the starting end of the piston rod is assembled in the cylinder barrel, dividing the cylinder barrel cavity into two parts, one part is a rodless cavity, and the other part is a rod cavity; the end of the piston rod is located outside the cylinder barrel, and a first oil port and a second oil port are arranged in the end face of the end of the piston rod, the first oil port is connected to the rodless cavity, and the second oil port is connected to the rod cavity; the crushing piston head is arranged at the end of the cylinder barrel away from the end of the piston rod; The control valve block is used to control the hydraulic oil to enter the first oil port and the second oil port to control the moving direction of the cylinder of the integrated push cylinder; the control valve block is also used to control the hydraulic oil to enter the hydraulic knife gate valve to control the opening and closing state of the hydraulic knife gate valve; The control valve block includes an oil circuit block, a first reversing valve and a second reversing valve; The oil circuit block is provided with a main oil pump connecting oil port, an auxiliary oil pump connecting oil port, a knife gate valve reversing oil port and an integrated push cylinder reversing oil port; the integrated push cylinder reversing oil port is connected to the first oil port and the second oil port, the main oil pump connecting oil port is connected to the first reversing valve, the first reversing valve controls the oil circuit direction of the integrated push cylinder reversing oil port to control the reciprocating movement of the cylinder barrel; the auxiliary oil pump connecting oil port is connected to the second reversing valve, the second reversing valve controls the oil circuit direction of the knife gate valve reversing oil port to control the opening and closing state of the hydraulic knife gate valve; The control valve block further includes a first relief valve, a second relief valve and a check valve; the first relief valve is connected to the pipeline between the main oil pump connecting oil port and the first reversing valve; the second relief valve is connected to the pipeline between the auxiliary oil pump connecting oil port and the second reversing valve; the check valve is arranged in the pipeline between the auxiliary oil pump connecting oil port and the second reversing valve; The first reversing valve, the second reversing valve, the first overflow valve, the second overflow valve and the one-way valve are all integrated and installed on the oil circuit block, and the oil circuit block is installed on the end face of the piston rod so that the integrated push cylinder reversing oil port is directly connected to the first oil port and the second oil port.

2. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 1, It is characterized in that The connection between the integrated push cylinder reversing oil port and the first oil port and the second oil port is sealed by an O-ring.

3. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 1, It is characterized in that The utility model also comprises a guide flange, which is arranged in the feed hopper, and the inner hole of the guide flange is sleeved on the cylinder barrel of the integrated push cylinder.

4. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 3, It is characterized in that A dustproof ring, a sealing ring and a grease channel are arranged between the inner hole of the guide flange and the cylinder barrel of the integrated push cylinder.

5. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 1, It is characterized in that The inner and outer surfaces of the cylinder barrel and the inner surface of the delivery cylinder are both hard chrome plated.

6. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 1, It is characterized in that The crushing piston head is made of alloy steel and can be disassembled and replaced.

7. The hydraulic pumping equipment with integrated push cylinder and control valve block according to claim 1, It is characterized in that The equipment works in three stages: Preparation stage: The system pumps hydraulic oil from the main oil pump connection port and the auxiliary oil pump connection port into the integrated control valve block, driving the hydraulic knife gate valve to be in a closed state, and the material flows into the feed hopper and the conveying cylinder; Pushing stage: drive the first reversing valve to control the hydraulic oil to enter the rodless chamber from the first oil port to drive the cylinder barrel and the crushing piston head to move rightward until the crushing piston head reaches the inlet of the conveying cylinder, drive the second reversing valve to control the oil circuit to open the hydraulic knife gate valve, and the material begins to be crushed, squeezed and pumped. The crushing piston head continues to move rightward to the outlet of the conveying cylinder, and drive the second reversing valve to control the oil circuit to close the hydraulic knife gate valve; Return stage: drive the first reversing valve to control the hydraulic oil to enter the rod chamber from the second oil port to drive the cylinder and the crushing piston head to move left until the crushing piston head returns to the initial position. The equipment completes a cycle of material pumping.

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