Hydraulic valve, raw material conveying device and method for pyrolysis of organic solid waste

Abstract

The present invention provides a hydraulic valve, a raw material conveying device and method for pyrolysis of organic solid waste, the hydraulic valve comprising: a valve body and a valve plate; the valve body comprising a feed port and a discharge port; the discharge port is larger than the feed port, the valve plate is arranged in the valve body and between the feed port and the discharge port, the surface of the valve plate relative to the discharge port is larger than the surface of the valve plate relative to the feed port; the valve plate is used to control the communication area between the feed port and the discharge port under the action of hydraulic pressure. The hydraulic valve of the present invention adopts a unique design to ensure that the movement of the valve body will not be blocked by the textile filamentous garbage in the raw material, and the hydraulic valve plate is prevented from being easily deformed when enlarged. The raw material conveying device avoids the blockage of the hydraulic valve, avoids the easy deformation of the hydraulic valve plate when enlarged, achieves air tightness, realizes efficient conveying of raw materials for the organic solid waste pyrolysis system, and is easy to operate and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage disposal, and in particular to a hydraulic valve, a raw material conveying device and a method for pyrolysis of organic solid waste. Background Art

[0002] The pyrolysis process of organic solid waste aims to utilize solid waste in a high-value manner. Based on the pyrolysis-coupled gasification technology, the chemical energy of solid waste is converted into fuel gas, which can be used as fuel gas, heating, blending, power generation, etc., achieving the purpose of effective harmlessness and reduction. At the same time, compared with direct incineration, it has a higher resource utilization capacity and can greatly improve the flexibility of the project. The pyrolysis process needs to control the amount of oxygen entering the pyrolysis reactor, so a feeding system suitable for the pyrolysis process of organic solid waste is required.

[0003] For the raw material transportation of organic solid waste pyrolysis system, there is currently no way to solve the problems of air tightness, hydraulic valve blockage, and easy deformation of hydraulic valve plate due to enlargement.

[0004] Among them, the traditional hydraulic valve has a valve plate limit groove at the bottom of the valve body, or there is no support at the bottom. When subjected to high pressure conditions, the valve plate of the hydraulic valve is easily deformed, causing the hydraulic valve to fail to work normally; when conveying textile and filamentary raw materials, the limit groove is easily blocked by material, causing the valve body to be unable to close in place. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art in the raw material transportation of the organic solid waste pyrolysis system, which are currently unable to solve the problems of air tightness, hydraulic valve blockage, and easy deformation of the hydraulic valve plate when enlarged, and to provide a hydraulic valve, a raw material transportation device and a method for the pyrolysis of organic solid waste.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a hydraulic valve, comprising: a valve body and a valve plate;

[0008] The valve body comprises an inlet and an outlet;

[0009] The discharge port is larger than the feed port, the valve plate is disposed in the valve body and between the feed port and the discharge port, and the surface of the valve plate relative to the discharge port is larger than the surface of the valve plate relative to the feed port;

[0010] The valve plate is used to control the communication area between the feed port and the discharge port under the action of hydraulic pressure.

[0011] Preferably, the vertical cross-section of the valve plate parallel to the feed port is square, and the horizontal cross-section of the valve plate is trapezoidal, with the upper base of the trapezoid relative to the feed port and the lower base of the trapezoid relative to the discharge port.

[0012] Preferably, the surface of the trapezoidal waist located on the valve plate is two side waist surfaces;

[0013] The side wall surface of the valve body is provided with a supporting structure, which supports the valve plate in a direction perpendicular to the side waist surface;

[0014] And / or, when the feed port and the discharge port are closed, the valve plate is in direct contact with the bottom plate of the valve body.

[0015] The present invention also provides a raw material conveying device for pyrolysis of organic solid waste, comprising: a first hydraulic press, a material pushing pipeline, a material pushing piston, a feed bin, a pressure plate valve, a first sealing pipeline, a hydraulic valve, a second sealing pipeline and a second hydraulic press;

[0016] The hydraulic valve is the aforementioned hydraulic valve;

[0017] The first hydraulic press is fixedly connected to the first end of the pushing pipe, the hydraulic rod of the first hydraulic press is fixedly connected to the pushing piston, and the pushing piston is located in the pushing pipe;

[0018] The second end of the pushing pipe is communicated with the pushing port of the feed bin, the discharge port of the feed bin is communicated with the first end of the first sealed pipe, the second end of the first sealed pipe is communicated with the feed port of the hydraulic valve, the discharge port of the hydraulic valve is communicated with the first end of the second sealed pipe, and the second end of the second sealed pipe is communicated with the feed port of the external garbage pyrolysis equipment;

[0019] The pressure plate valve is arranged on the feed port of the feed bin and is used to rotate around the fixed axis of the pressure plate valve relative to the feed bin, and one end of the pressure plate valve away from the fixed axis is drivingly connected to the hydraulic rod of the second hydraulic press;

[0020] The pressure plate valve is used to compress the raw material at the feed port of the feed bin and push it into the interior of the feed bin under the push of the second hydraulic press;

[0021] The pushing piston is used to push the compressed raw materials in the feed bin into the first sealed pipe under the push of the first hydraulic press.

[0022] Preferably, a drain port is provided at the bottom of the first sealed pipe;

[0023] When the raw material conveying device needs to be sealed, the outlet pipe of the drain port is sealed in water.

[0024] Preferably, the first sealed pipe includes a circular sealed pipe and a square sealed pipe;

[0025] The first end of the first sealed pipe is the first end of the circular sealed pipe, the second end of the circular sealed pipe is connected to the first end of the square sealed pipe, and the second end of the first sealed pipe is the second end of the square sealed pipe;

[0026] The liquid discharge port is arranged at the bottom of the square sealed pipe.

[0027] Preferably, feed baffles are provided on three sides of the feed port of the feed bin, and the pressure plate valve is located on the other side of the feed port.

[0028] Preferably, two scraper plates are arranged above and below the pressure plate valve;

[0029] The scraper plate is used to scrape off the raw material carried by the pressure plate valve.

[0030] Preferably, the material conveying device further comprises: a support frame and a sliding track;

[0031] The support frame is used to support and fix the first hydraulic press, the pushing pipe, the pushing piston, the feed bin, the pressure plate valve, the first sealing pipe, the hydraulic valve, the second sealing pipe and the second hydraulic press;

[0032] A plurality of rotatable track wheels are provided at the bottom of the support frame;

[0033] The rotatable track wheel is used to move on the sliding track.

[0034] Preferably, a cutting knife is arranged at the front end of the pushing piston, and the pushing piston is made of hard alloy.

[0035] The present invention also provides a raw material conveying method for pyrolysis of organic solid waste, wherein the raw material conveying method is implemented by using the aforementioned raw material conveying device for pyrolysis of organic solid waste;

[0036] The raw material conveying method comprises:

[0037] Controlling the pressure plate valve to compress the raw materials in the feed bin;

[0038] Controlling the pushing piston to push the compressed raw material into the first sealed pipe;

[0039] When the pressure value of the first hydraulic press reaches a pressure threshold, the hydraulic valve is controlled to be in an open state, so that the raw material flows from the first sealed pipeline into the second sealed pipeline.

[0040] Preferably, controlling the pressure plate valve to compress the raw materials in the feed bin comprises:

[0041] Obtaining the material level reached by the raw materials in the feed bin;

[0042] When the material level reaches the material level threshold, controlling the second hydraulic press to push the pressure plate valve to compress the raw material and close the feed port of the feed bin;

[0043] and / or,

[0044] The step of controlling the pushing piston to push the compressed raw material into the first sealed pipe includes:

[0045] The first hydraulic press is controlled to push the pushing piston, so that the pushing piston pushes the compressed raw material in the feed bin into the first sealing pipe.

[0046] Preferably, the raw material conveying method further comprises:

[0047] When the pressure value of the first hydraulic machine is lower than a pressure threshold, controlling the hydraulic valve to be in a closed state;

[0048] and / or,

[0049] When the pressure value of the first hydraulic machine is higher than a pressure threshold, the hydraulic valve is controlled to be in an open state.

[0050] The positive and progressive effects of the present invention are: the hydraulic valve adopts a unique design to ensure that the fabric filamentary garbage in the raw material will not block the movement of the valve body, and avoids the hydraulic valve plate from being easily deformed when enlarged. The raw material conveying device adopts a uniquely designed hydraulic valve to ensure that the fabric filamentary garbage in the raw material will not block the movement of the valve body, and avoids the hydraulic valve plate from being easily deformed when enlarged; through the sealing devices such as the first sealing pipe and the second sealing pipe and the sealing connection between each other, the air tightness of the raw material during the conveying process is ensured. The raw material conveying device realizes the efficient conveying of raw materials for the organic solid waste pyrolysis system, and is easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a front view of the hydraulic valve of embodiment 1 of the present invention.

[0052] Figure 2 It is a left view of the hydraulic valve of embodiment 1 of the present invention.

[0053] Figure 3 For along Figure 1 Cross-section along line AA.

[0054] Figure 4 For along Figure 1 Cross-section along line BB.

[0055] Figure 5 It is a partial stereoscopic view of the hydraulic valve of Example 1 of the present invention.

[0056] Figure 6 This is a structural diagram of a raw material conveying device for pyrolysis of organic solid waste according to Example 2 of the present invention.

[0057] Figure 7 This is a cross-sectional view of a feed bin, a pressure plate valve and their connecting parts in a raw material conveying device for pyrolysis of organic solid waste according to Example 2 of the present invention.

[0058] Figure 8 This is a flow chart of a raw material conveying method for pyrolysis of organic solid waste according to Example 3 of the present invention.

[0059] Fig. 9 This is a flow chart of a specific implementation of step S11 in the raw material transportation method for pyrolysis of organic solid waste according to Example 3 of the present invention. DETAILED DESCRIPTION

[0060] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0061] Example 1

[0062] This embodiment provides a hydraulic valve, referring to Figure 1-5 The hydraulic valve comprises: a valve body 11 , a valve plate 12 and a hydraulic cylinder 13 . The valve body 11 comprises an inlet 111 and an outlet 112 , and the hydraulic cylinder 13 comprises an oil supply and return port 131 . Figure 3 for Figure 1 Left side cross-sectional view in the A direction, Figure 4 for Figure 1 Horizontal section view along the B direction.

[0063] The discharge port 112 is larger than the feed port 111 . The valve plate 12 is disposed in the valve body 11 and located between the feed port 111 and the discharge port 112 . The surface of the valve plate 12 relative to the discharge port 112 is larger than the surface of the valve plate 12 relative to the feed port 111 .

[0064] The valve plate 12 is used to control the communication area between the feed port 111 and the discharge port 112 under the action of hydraulic pressure.

[0065] Among them, the feed port 111 is relatively small, and the discharge port 112 is relatively large. The conveying channel of the raw material in the hydraulic valve is changed from small to large, so that the raw material can easily pass through the hydraulic valve and avoid blockage. The valve body 11 is connected to the connecting rod of the hydraulic cylinder through a flange. The hydraulic cylinder and the connecting rod are connected by a pin shaft.

[0066] The valve body 11 adopts a fully sealed design. Except for the hydraulic cylinder flange and the cylinder body, the rest are sealed with a sealing cover. The surface of the valve body 11 that contacts the valve plate 12 is chrome-plated. The surface of the valve plate 12 is chrome-plated to ensure the hardness and wear resistance of the contact surface.

[0067] The hydraulic valve of this embodiment adopts a unique design to ensure that the movement of the valve body will not be blocked by textile filaments in the raw materials.

[0068] In a specific implementation, the vertical cross section of the valve plate 12 parallel to the feed port 111 is square, and the horizontal cross section of the valve plate 12 is trapezoidal, with the upper base of the trapezoid corresponding to the feed port 111 and the lower base of the trapezoid corresponding to the discharge port 112 .

[0069] The hydraulic valve of this embodiment is a square valve, and the horizontal cross section of the valve plate 12 is a trapezoid, which makes the valve plate easy to manufacture and maintain. The upper bottom edge of the trapezoid is relative to the feed port 111, and the lower bottom edge of the trapezoid is relative to the discharge port 112, so that the surface of the valve plate 12 relative to the discharge port 112 is larger than the surface of the valve plate 12 relative to the feed port 111.

[0070] This embodiment provides a specific implementation of the hydraulic valve, and the valve plate is easy to manufacture and maintain.

[0071] In a specific implementation, the surface of the trapezoidal waist located on the valve plate 12 is two side waist surfaces.

[0072] A supporting structure 113 is provided on the side wall surface of the valve body 11 to support the valve plate 12 in a direction perpendicular to the side waist surface.

[0073] In this embodiment, the support structure serves as a support surface for the valve plate, and all the forces are concentrated on the support structure on both sides of the valve plate. The valve plate will not be deformed under high pressure due to the high support points.

[0074] In a specific implementation, when the feed port 111 and the discharge port 112 are closed, the valve plate 12 is in direct contact with the bottom plate 114 of the valve body 11 .

[0075] In this embodiment, there is no limiting groove of the valve plate at the bottom of the valve body. Since there is no limiting groove at the bottom, it can be ensured that the limiting groove will not be blocked by textiles or filaments, thereby solving the problem of conveying textile and filamentary raw materials.

[0076] Example 2

[0077] This embodiment provides a raw material conveying device for pyrolysis of organic solid waste. Figure 6 The raw material conveying device includes: a hydraulic valve 1, a first hydraulic press 2, a pushing pipe 3, a pushing piston, a feed bin 5, a pressure plate valve 6, a first sealing pipe 7, a second sealing pipe 8 and a second hydraulic press.

[0078] The hydraulic valve 1 is the hydraulic valve in Embodiment 1.

[0079] The first hydraulic press 2 is fixedly connected to the first end of the pushing pipe 3 , the hydraulic rod of the first hydraulic press 2 is fixedly connected to the pushing piston, and the pushing piston is located in the pushing pipe 3 .

[0080] The second end of the pushing pipe 3 is connected to the pushing port of the feed bin 5, the discharge port of the feed bin 5 is connected to the first end of the first sealed pipe 7, the second end of the first sealed pipe 7 is connected to the feed port of the hydraulic valve 1, the discharge port of the hydraulic valve 1 is connected to the first end of the second sealed pipe 8, and the second end of the second sealed pipe 8 is connected to the feed port of the external garbage pyrolysis equipment.

[0081] The pressure plate valve 6 is arranged on the feed port of the feed bin 5 and is used to rotate around the fixed axis of the pressure plate valve 6 relative to the feed bin 5. One end of the pressure plate valve 6 away from the fixed axis is transmission-connected to the hydraulic rod of the second hydraulic press.

[0082] The pressure plate valve 6 is used to compress the raw materials at the feed port of the feed bin 5 and push them into the interior of the feed bin 5 under the push of the second hydraulic press.

[0083] The pushing piston is used to push the compressed raw materials in the feed bin 5 into the first sealed pipe 7 under the push of the first hydraulic press 2 .

[0084] Among them, the first hydraulic press 2 connects the hydraulic cylinder with the push piston by bolts, and the hydraulic cylinder of the first hydraulic press 2 is fixed to the push pipe 3 by a flange. The push piston is provided with front and rear guide grooves to ensure that the push piston is concentric with the push pipe 3. The push piston is provided with a sealing device, which adopts a hard seal and abandons the traditional soft seal form, and can achieve a service life of more than 20 years. Due to the high solid content of the raw material, there is no need to achieve high-pressure sealing.

[0085] The pushing pipe 3 needs to withstand frequent friction. Due to the complexity of the raw materials, there may be hard raw materials. Therefore, the pushing pipe 3 uses chromium as a coating to increase the wear resistance of the pipe.

[0086] Reference Figure 7 The pressure plate valve 6 is connected to the feed bin 5 by a rotating pin. The pressure plate valve 6 is an arc-shaped pressure plate valve, and the arc angle range can be 90 degrees to 180 degrees. The pressure plate valve 6 rotates around the connecting pin. The power mechanism of the pressure plate valve 6 is a second hydraulic press, and the hydraulic rod of the second hydraulic press is connected to the pressure plate valve 6 through a Y-type joint 601. The thrust is converted into torque through the Y-type joint 601, and the pressure plate valve 6 is arranged with a reinforcing rib plate.

[0087] The circular sealing pipe 71 matches the pushing piston to achieve sealing of the compressed raw material.

[0088] The square sealed pipe 72 matches the hydraulic valve 1, and the reinforcing plate outside the square sealed pipe 72 is used as a feed support device. The feed support device is arranged at the four corners of the square sealed pipe 72, and an L-shaped reinforcing rod is arranged at each corner and connected to the flange of the square sealed pipe 72.

[0089] In this embodiment, the raw material conveying device uses a uniquely designed hydraulic valve to ensure that the fabric filamentous garbage in the raw material does not block the movement of the valve body, and avoids the hydraulic valve plate from being easily deformed due to enlargement; the airtightness of the raw material during the conveying process is ensured by the sealing devices such as the first sealing pipe and the second sealing pipe and the sealing connection between each other. The raw material conveying device realizes the efficient conveying of raw materials for the organic solid waste pyrolysis system and is easy to operate and maintain.

[0090] During specific implementation, a drain port is provided at the bottom of the first sealed pipe 7 .

[0091] When the raw material conveying device needs to be sealed, the outlet pipe of the drain port is sealed in water.

[0092] Sealing the outlet pipe of the liquid discharge port into water can achieve both sealing and liquid discharge functions, further enhancing the air tightness of the raw material conveying device.

[0093] In a specific implementation, the first sealed pipe 7 includes a circular sealed pipe 71 and a square sealed pipe 72 .

[0094] The first end of the first sealed pipe 7 is the first end of the circular sealed pipe 71 , the second end of the circular sealed pipe 71 is connected to the first end of the square sealed pipe 72 , and the second end of the first sealed pipe 7 is the second end of the square sealed pipe 72 .

[0095] The drain port is arranged at the bottom of the square sealed pipe 72 .

[0096] In a specific implementation, feed baffles are provided on three sides of the feed port of the feed bin 5, and the pressure plate valve 6 is located on the other side of the feed port.

[0097] In this embodiment, the feed port is closed by the feed baffle and the pressure plate valve.

[0098] During specific implementation, two scraper plates are arranged above and below the pressure plate valve 6 .

[0099] The scraper plate is used to scrape the raw materials carried by the pressure plate valve 6.

[0100] Reference Figure 7 The bottom of the pressure plate valve 6 adopts an arc structure to cooperate with the scraper plate of the feed bin 5 to achieve sealing and scraping functions.

[0101] In a specific implementation, the material conveying device further includes: a support frame 101 and a sliding track 102 .

[0102] The support frame 101 is used to support and fix the first hydraulic press 2, the pushing pipe 3, the pushing piston, the feed bin 5, the pressure plate valve 6, the first sealing pipe 7, the hydraulic valve 1, the second sealing pipe 8 and the second hydraulic press.

[0103] A plurality of rotatable track wheels are provided at the bottom of the support frame 101 .

[0104] The rotatable track wheels are used to move on the sliding track 102.

[0105] Among them, a convex plate is arranged at the bottom of the feed support device and is connected to the support frame 101 through a flange.

[0106] The rotatable track wheel can be a wheel similar to a train wheel, and can move left and right on the sliding track. The sliding track 102 can be similar to a railroad track, and the rotatable track wheel moves on the sliding track 102 without deviation.

[0107] In the organic solid waste pyrolysis system, the pyrolysis reactor will generate thermal expansion, which will cause thermal displacement of the reactor. Since the pyrolysis reactor needs to ensure the relative fixity of the sealing surface, the thermal displacement can be transferred to the raw material conveying device through the sliding track 102.

[0108] In specific implementation, a cutting knife is arranged at the front end of the pushing piston, and the pushing piston is made of hard alloy.

[0109] Among them, the cutter can be made of hard alloy.

[0110] In this embodiment, a cutting knife is arranged at the front end of the pushing piston, so as to achieve cutting of fabrics, glass and metal sheets, and ensure that the pushing piston will not get stuck.

[0111] Example 3

[0112] This embodiment provides a raw material conveying method for pyrolysis of organic solid waste. The raw material conveying method is implemented using the raw material conveying device for pyrolysis of organic solid waste in Example 2.

[0113] Reference Figure 8 , raw material delivery methods include:

[0114] S11, control the pressure plate valve to compress the raw materials in the feed bin.

[0115] S12, controlling the pushing piston to push the compressed raw material into the first sealed pipeline.

[0116] S13. When the pressure value of the first hydraulic press reaches a pressure threshold, the hydraulic valve is controlled to be in an open state so that the raw material flows from the first sealed pipeline into the second sealed pipeline.

[0117] The raw material continuously enters the first sealed pipe under the push of the push piston, increasing the pressure value of the first hydraulic press. The pressure value of the first hydraulic press reaches the pressure threshold, indicating that the raw material in the first sealed pipe has reached a certain amount and has been squeezed to a certain extent. At this time, the hydraulic valve is controlled to be in an open state, and the raw material enters the second sealed pipe from the first sealed pipe under the pressure transmitted by the push piston.

[0118] The pressure value of the first hydraulic press is maintained at the pressure threshold, which is conducive to the efficient transportation of raw materials. The pressure threshold can be set according to actual needs.

[0119] In this embodiment, the raw material conveying device uses a uniquely designed hydraulic valve to ensure that the fabric filamentous garbage in the raw material will not block the valve body movement, and avoids the hydraulic valve plate from being easily deformed due to enlargement; the airtightness of the raw material during the conveying process is ensured by the sealing devices such as the first sealing pipe and the second sealing pipe and the sealing connection between each other. The raw materials in the feed bin are compressed, the push piston pushes the raw materials into the first sealing pipe, and the hydraulic valve is controlled to be in an open state, so that the raw materials pass through the first sealing pipe and the hydraulic valve from the feed bin into the second sealing pipe, thereby realizing efficient conveying of raw materials for the organic solid waste pyrolysis system, and being easy to operate and maintain.

[0120] When implementing it, refer to Fig. 9 , step S11 comprises:

[0121] S111. Obtain the material level reached by the raw materials in the feed bin.

[0122] S112. When the material level reaches the material level threshold, the second hydraulic press is controlled to push the pressure plate valve to compress the raw material and close the feed port of the feed bin.

[0123] Among them, if the material level threshold is too large, the pressure plate valve will not be able to compress forcefully; if the material level threshold is too small, the pressure plate valve will compress too frequently and cause energy waste.

[0124] The material level threshold can be set according to actual needs.

[0125] The feed opening of the closed feed bin can help the push piston to push the raw materials and avoid squeezing the raw materials out of the feed bin during pushing.

[0126] This embodiment uses the material level threshold to control the pressure plate valve to compress the raw materials and close the feed port of the feed bin, thereby achieving the effect of reasonably compressing the raw materials and helping the push piston to push the raw materials, thereby avoiding squeezing the raw materials out of the feed bin during pushing.

[0127] In specific implementation, step S12 includes:

[0128] The first hydraulic press is controlled to push the pushing piston, so that the pushing piston pushes the compressed raw materials in the feed bin into the first sealed pipeline.

[0129] This embodiment provides a specific implementation method for controlling the pushing piston to push the compressed raw material into the first sealed pipe.

[0130] During specific implementation, the raw material conveying method further comprises:

[0131] When the pressure value of the first hydraulic machine is lower than the pressure threshold, the hydraulic valve is controlled to be in a closed state.

[0132] Among them, the pressure value of the first hydraulic press is lower than the pressure threshold, indicating that the amount of raw material in the first sealed pipe is insufficient, and it is necessary to control the hydraulic valve to be in a closed state to continue filling the raw material in the first sealed pipe.

[0133] In this embodiment, when the pressure value of the first hydraulic press is lower than the pressure threshold, the hydraulic valve is controlled to be in a closed state, so as to continue to fill the first sealed pipeline with raw materials.

[0134] During specific implementation, the raw material conveying method further comprises:

[0135] When the pressure value of the first hydraulic machine is higher than the pressure threshold, the hydraulic valve is controlled to be in an open state.

[0136] Among them, the pressure value of the first hydraulic press is higher than the pressure threshold, indicating that the amount of raw materials in the first sealed pipe is too much, and it is necessary to control the hydraulic valve to be in an open state so that the raw materials in the first sealed pipe enter the second sealed pipe to reduce the raw materials in the first sealed pipe.

[0137] In this embodiment, when the pressure value of the first hydraulic press is higher than the pressure threshold, the hydraulic valve is controlled to be in an open state, so that the raw material in the first sealed pipeline enters the second sealed pipeline, thereby reducing the raw material in the first sealed pipeline.

[0138] The following two examples introduce the operation method of the raw material conveying device for pyrolysis of organic solid waste.

[0139] (1) Example 1

[0140] The raw material components are: textile, leather, plastic, paper, soil, glass, and iron wire, which are arranged in a ratio of 5:5:5:5:5:1:1 to form raw material A, and the feed rate is Mkg / h (M kilograms / hour).

[0141] The startup phase operation process:

[0142] At this time, the hydraulic valve is in the closed state.

[0143] Step A1: Raw material A enters the feed bin, and when the material level reaches the set value (400 mm), the pressure plate valve closes to compress the raw material and seal the feed port of the feed bin.

[0144] Step A2: Start the first hydraulic press, and the push piston starts to move, pushing the raw materials in the feed bin into the first sealed pipe. At this time, the pressure value of the first hydraulic press is lower than the set value (2 MPa), and the first hydraulic press is controlled according to the stroke control logic.

[0145] Step A3: The pressure plate valve is opened and the feeding continues. When the set value (400 mm) is reached, the pressure plate valve is closed to compress the raw materials and seal the feed port of the feed bin.

[0146] Step A4: Start the first hydraulic press, and the push piston starts to move, pushing the raw materials in the feed bin into the sealed pipe. At this time, the pressure value of the first hydraulic press is lower than the set value (2 MPa), and the first hydraulic press is controlled according to the stroke control logic.

[0147] Step A5: Repeat steps A1-A4 until the pressure value of the first hydraulic press reaches the set value (2 MPa).

[0148] Stable phase operation process:

[0149] Step B1: Open the hydraulic valve.

[0150] Step B2: The pressure plate valve is opened and the feeding continues. When the set value (400 mm) is reached, the pressure plate valve is closed to compress the raw materials and seal the feed port of the feed bin.

[0151] Step B3: Start the first hydraulic press, the push piston starts to move, pushing the raw materials in the feed bin into the first sealed pipe, and the first hydraulic press controls the system movement stroke according to the pressure.

[0152] Step B4: If the feedback pressure of the first hydraulic machine is higher than the set value (2 MPa), the hydraulic valve remains open; if it is lower than the set value (2 MPa), the hydraulic valve starts closing until the set pressure value (2 MPa) is reached. Repeat steps B2-B3.

[0153] Running 7*24 hours, the first hydraulic press and the second hydraulic press run stably, the pushing piston and the seal are normal, the pressure plate valve runs stably, the front and back pressure difference of the first sealing pipe and the second sealing pipe is stable, and the hydraulic valve runs stably without blockage problems.

[0154] (2) Example 2

[0155] The raw material components are: textile, vegetable leaves, soil, glass, and iron wire, which are configured into raw material B in a mass ratio of 3:3:3:1:1, and the feed rate is Nkg / h (N kilograms / hour).

[0156] The startup phase operation process:

[0157] At this time, the hydraulic valve is in the closed state.

[0158] Step A1: Raw material B enters the feed bin, and when the material level reaches the set value (400 mm), the pressure plate valve closes to compress the raw material and seals the feed port of the feed bin.

[0159] Step A2: Start the first hydraulic press, and the push piston starts to move, pushing the raw materials in the feed bin into the first sealed pipe. At this time, the pressure value of the first hydraulic press is lower than the set value (2 MPa), and the first hydraulic press is controlled according to the stroke control logic.

[0160] Step A3: The pressure plate valve is opened and the feeding continues. When the set value (400 mm) is reached, the pressure plate valve is closed to compress the raw materials and seal the feed port of the feed bin.

[0161] Step A4: Start the first hydraulic press, and the push piston starts to move, pushing the raw materials in the feed bin into the first sealed pipe. At this time, the pressure value of the first hydraulic press is lower than the set value (2 MPa), and the first hydraulic press is controlled according to the stroke control logic.

[0162] Step A5: Repeat steps A1-A4 until the pressure value of the first hydraulic press reaches the set value (2 MPa).

[0163] Stable phase operation process:

[0164] Step B1: Open the hydraulic valve.

[0165] Step B2: The pressure plate valve is opened and the feeding continues. When the set value (400 mm) is reached, the pressure plate valve is closed to compress the raw materials and seal the feed port of the feed bin.

[0166] Step B3: Start the first hydraulic press, the push piston starts to move, pushing the raw materials in the feed bin into the first sealed pipe, and the first hydraulic press controls the system movement stroke according to the pressure.

[0167] Step B4: If the feedback pressure of the first hydraulic machine is higher than the set value (2 MPa), the hydraulic valve remains open; if it is lower than the set value (2 MPa), the hydraulic valve starts closing until the set pressure value (2 MPa) is reached. Repeat steps B2-B3.

[0168] Running 7*24 hours, the first hydraulic press and the second hydraulic press run stably, the pushing piston and the seal are normal, the pressure plate valve runs stably, the front and back pressure difference of the first sealing pipe and the second sealing pipe is stable, and the hydraulic valve runs stably without blockage problems.

[0169] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A hydraulic valve, characterized in that: include: Valve body and valve plate; The valve body comprises an inlet and an outlet; The discharge port is larger than the feed port, the valve plate is disposed in the valve body and between the feed port and the discharge port, and the surface of the valve plate relative to the discharge port is larger than the surface of the valve plate relative to the feed port; The valve plate is used to control the communication area between the feed port and the discharge port under the action of hydraulic pressure; The vertical cross section of the valve plate parallel to the feed port is square, and the horizontal cross section of the valve plate is trapezoidal, wherein the upper base of the trapezoid is relative to the feed port, and the lower base of the trapezoid is relative to the discharge port.

2. The hydraulic valve according to claim 1, characterized in that The surface of the trapezoidal waist located on the valve plate is two side waist surfaces; The side wall surface of the valve body is provided with a supporting structure to support the valve plate in a direction perpendicular to the side waist surface; And / or, when the feed port and the discharge port are closed, the valve plate is in direct contact with the bottom plate of the valve body.

3. A raw material conveying device for pyrolysis of organic solid waste, characterized in that: include: A first hydraulic press, a pushing pipe, a pushing piston, a feed bin, a pressure plate valve, a first sealing pipe, a hydraulic valve, a second sealing pipe, and a second hydraulic press; The hydraulic valve is a hydraulic valve as claimed in any one of claims 1 to 2; The first hydraulic press is fixedly connected to the first end of the pushing pipe, the hydraulic rod of the first hydraulic press is fixedly connected to the pushing piston, and the pushing piston is located in the pushing pipe; The second end of the pushing pipe is communicated with the pushing port of the feed bin, the discharge port of the feed bin is communicated with the first end of the first sealed pipe, the second end of the first sealed pipe is communicated with the feed port of the hydraulic valve, the discharge port of the hydraulic valve is communicated with the first end of the second sealed pipe, and the second end of the second sealed pipe is communicated with the feed port of the external garbage pyrolysis equipment; The pressure plate valve is arranged on the feed port of the feed bin and is used to rotate around the fixed axis of the pressure plate valve relative to the feed bin, and one end of the pressure plate valve away from the fixed axis is drivingly connected to the hydraulic rod of the second hydraulic press; The pressure plate valve is used to compress the raw material at the feed port of the feed bin and push it into the interior of the feed bin under the push of the second hydraulic press; The pushing piston is used to push the compressed raw materials in the feed bin into the first sealed pipe under the push of the first hydraulic press.

4. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 3, characterized in that: A drain port is provided at the bottom of the first sealed pipe; When the raw material conveying device needs to be sealed, the outlet pipe of the drain port is sealed in water.

5. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 4, characterized in that: The first sealed pipe includes a circular sealed pipe and a square sealed pipe; The first end of the first sealed pipe is the first end of the circular sealed pipe, the second end of the circular sealed pipe is connected to the first end of the square sealed pipe, and the second end of the first sealed pipe is the second end of the square sealed pipe; The liquid discharge port is arranged at the bottom of the square sealed pipe.

6. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 3, characterized in that: Feed baffles are arranged on three sides of the feed port of the feed bin, and the pressure plate valve is located on the other side of the feed port.

7. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 6, characterized in that: Two scraper plates are arranged above and below the pressure plate valve; The scraper plate is used to scrape off the raw material carried by the pressure plate valve.

8. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 3, characterized in that: The material conveying device further comprises: a support frame and a sliding track; The support frame is used to support and fix the first hydraulic press, the pushing pipe, the pushing piston, the feed bin, the pressure plate valve, the first sealing pipe, the hydraulic valve, the second sealing pipe and the second hydraulic press; A plurality of rotatable track wheels are provided at the bottom of the support frame; The rotatable track wheel is used to move on the sliding track.

9. The raw material conveying device for pyrolysis of organic solid waste as claimed in claim 3, characterized in that: A cutter is arranged at the front end of the pushing piston, and the pushing piston is made of hard alloy.

10. A method for conveying raw materials for pyrolysis of organic solid waste, characterized in that: The raw material conveying method is implemented by using the raw material conveying device for pyrolysis of organic solid waste as described in any one of claims 3 to 9; The raw material conveying method comprises: Controlling the pressure plate valve to compress the raw materials in the feed bin; Controlling the pushing piston to push the compressed raw material into the first sealed pipe; When the pressure value of the first hydraulic press reaches a pressure threshold, the hydraulic valve is controlled to be in an open state, so that the raw material flows from the first sealed pipeline into the second sealed pipeline.

11. The method for conveying raw materials for pyrolysis of organic solid waste according to claim 10, characterized in that: The controlling the pressure plate valve to compress the raw materials in the feed bin comprises: Obtaining the material level reached by the raw materials in the feed bin; When the material level reaches the material level threshold, controlling the second hydraulic press to push the pressure plate valve to compress the raw material and close the feed port of the feed bin; and / or, The step of controlling the pushing piston to push the compressed raw material into the first sealed pipe includes: The first hydraulic press is controlled to push the pushing piston, so that the pushing piston pushes the compressed raw material in the feed bin into the first sealing pipe.

12. The method for conveying raw materials for pyrolysis of organic solid waste according to claim 10, characterized in that: The raw material conveying method further comprises: When the pressure value of the first hydraulic machine is lower than a pressure threshold, controlling the hydraulic valve to be in a closed state; and / or, When the pressure value of the first hydraulic machine is higher than a pressure threshold, the hydraulic valve is controlled to be in an open state.

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