Double-end stock bin type screw pump

Abstract

The utility model relates to the technical field of screw pumps, in particular to a double-end stock bin type screw pump which comprises a stock bin. The feeding hole is used for external materials to enter the feeding cavity; the discharging opening is used for outputting materials in the feeding cavity outwards; the number of the discharging ports is two, and each discharging port is provided with a screw pump body in a matched mode, wherein the screw pump body is used for outputting materials in the feeding cavity outwards from the discharging port. According to the double-end stock bin type screw pump, one stock bin is matched with the two screw pump main bodies to supply materials.

Description

Technical Field

[0001] The utility model relates to the technical field of screw pumps, and more specifically to a double-head silo type screw pump. Background Art

[0002] The silo-type screw pump is a fluid conveying equipment widely used in the industrial field, which includes a screw pump body for directional conveying of materials, and a silo or hopper for receiving materials and introducing the received materials into the screw pump body; wherein the screw pump body is mainly composed of a motor, a screw propeller, a stator and a rotor, and the screw propeller part of the screw pump body is placed in the silo to transport the materials in the silo. For example, a screw pump for biogas with a publication number of CN212690326U discloses a screw pump structure with a square silo.

[0003] The existing silo-type screw pumps are mainly silo-type single screw pumps, that is, each silo in the existing silo-type screw pumps can only be adapted to one screw pump body for feeding. Silo-type screw pumps are mainly used to transport materials with high viscosity, generally special materials with dynamic viscosity above 50,000CP, or even above 100,000CP (such as dry sludge with a moisture content of 80%, lead paste that is easy to scale, etc.). When it is working, each silo needs to be equipped with a large-scale material conveying device (such as a Jiaolong conveying device) with high installation cost for feeding.

[0004] In this way, when, for example, two screw pump bodies are needed to transport materials more efficiently, the two screw pump bodies each have a silo for feeding materials; at this time, two sets of material conveying devices (such as Jiaolong conveying devices) must be provided to feed the two silos respectively, resulting in excessively high conveying costs. Utility Model Content

[0005] The utility model aims to solve the deficiencies of the prior art and to provide a double-head silo type screw pump in which one silo is adapted to supply materials to two screw pump bodies, and the transportation cost can be reduced when the pump is used for material transportation.

[0006] The technical solutions of the utility model are as follows:

[0007] Double-head silo type screw pump, including silo, the silo has:

[0008] Feed cavity;

[0009] A feed inlet for external materials to enter the feed cavity;

[0010] A discharge port for discharging materials in the feeding cavity outward;

[0011] There are two discharge ports, and each discharge port is matched with: a screw pump body for discharging the material in the feed cavity outward from the discharge port.

[0012] As a further preferred embodiment, the screw pump body comprises:

[0013] A screw propeller placed in the feed chamber;

[0014] A driving device disposed outside the feeding chamber, which is drivingly connected to the screw propeller and can drive the screw propeller to rotate along a first direction;

[0015] The screw propeller is configured to: when rotating along a first direction, it can discharge the material in the feed cavity outward from the discharge port.

[0016] As a further preferred embodiment, the top of the feed chamber is open to form a feed inlet.

[0017] As a further preferred solution, the bottom of the feed chamber is provided with: a baffle protruding upward;

[0018] A partition is placed between the two propellers.

[0019] As a further preferred solution, the upper end surface of the partition is formed with an arc surface to guide the material falling on the partition to flow toward the screw propellers on both sides.

[0020] As a further preferred solution, at least part of the side wall of the feed chamber is inclined to guide the material to flow toward the screw propeller.

[0021] As a further preferred solution, the discharge port and the screw propeller are both arranged close to the bottom of the feed chamber.

[0022] As a further preferred solution, the driving device is configured to drive the screw propeller to rotate in a first direction and to drive the screw propeller to rotate in a second direction opposite to the first direction.

[0023] As a further preferred embodiment, the screw pump body further comprises:

[0024] The stator connected to the silo has a discharge channel inside, one end of which is connected to the discharge port and the other end is open to form a guide port;

[0025] A rotor is placed in the discharge channel and is transmission-connected to the screw propeller so as to rotate with the screw propeller;

[0026] The rotor extends in a spiral shape so that when it rotates along the first direction, it can push the material flowing out of the discharge port to flow toward the guide outlet.

[0027] As a further preferred solution, a detachable guide plate is fixedly connected in the feed chamber, which covers a screw propeller in the feed chamber from top to bottom;

[0028] The guide plate is arranged to extend obliquely so as to guide the material falling on the guide plate to flow toward another screw propeller;

[0029] And the lower end of the guide plate is overlapped on the partition plate.

[0030] The main beneficial effects of the above technical solution are:

[0031] A double-head silo type screw pump is provided which is suitable for feeding two screw pump bodies. When it is used to transport materials, only one set of material conveying device needs to be set up to match the silo, so that the materials can be transported by the two screw pump bodies. There is no need to set up two sets of material conveying devices, so as to reduce the transportation cost.

[0032] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] Figure 1 It is a structural schematic diagram of the combination of a material conveying device and a screw pump.

[0035] Figure 2 It is a schematic diagram of the overall structure of a double-head silo type screw pump.

[0036] Figure 3 It is a cross-sectional schematic diagram of a double-head silo type screw pump.

[0037] Figure 4 Schematic diagram of the installation structure of the guide plate.

[0038] As shown in the figure: silo-1, feed chamber-1.1, feed port-1.2, discharge port-1.3, partition-1.4, screw pump body-2, screw propeller-2.1, rotating shaft-2.11, blade-2.12, driving device-2.2, rotating motor-2.21, reducer-2.22, stator-2.3, discharge channel-2.31, guide port-2.32, rotor-2.4, guide plate-3, material conveying device-4. DETAILED DESCRIPTION

[0039] The present invention is specifically described below with reference to the embodiments:

[0040] Example:

[0041] Silo screw pump, as attached Figure 1 To Attachment Figure 4 As shown in the figure, it mainly includes a silo 1 and a screw pump body 2. The silo 1 has a hollow interior to form a feed cavity 1.1, and the side wall of the silo 1 is provided with: a feed port 1.2 for external materials to enter the feed cavity 1.1, and a discharge port 1.3 for the materials in the feed cavity 1.1 to be discharged to the outside.

[0042] The screw pump body 2 is matched with the discharge port 1.3 and is configured to discharge the material in the feed chamber 1.1 outwardly from the discharge port 1.3.

[0043] When the above-mentioned silo type screw pump is used to receive the material output by the material conveying device 4 and convey the material in a directional manner, as shown in the attached Figure 1 As shown in the figure, the discharge pipe of the material conveying device 4 needs to be connected to the feed port 1.2 of the silo 1, so that the material is discharged from the material conveying device 4 and enters the feed chamber 1.1 from the feed port 1.2, and then the material in the feed chamber 1.1 is discharged outward from the discharge port 1.3 through the screw pump body 2.

[0044] If a silo 1 is only matched with one screw pump body 2 to form a silo-type single screw pump; then when, for example, two screw pump bodies 2 are needed to transport materials more efficiently, the two screw pump bodies 2 each have a silo 1 for feeding; at this time, two sets of material conveying devices 4 must be provided to feed the two silos 1 respectively, resulting in excessively high conveying costs.

[0045] Based on this, a double-head silo type screw pump is proposed in this embodiment.

[0046] Specifically, as attached Figure 2 To Attachment Figure 4 As shown in FIG. 1 , in this embodiment, the silo 1 is provided with two discharge ports 1.3 , and each discharge port 1.3 is matched with: a screw pump body 2 for discharging the material in the feed cavity 1.1 outwardly from the discharge port 1.3 .

[0047] In this way, two screw pump bodies 2 are provided for the two discharge ports 1.3; when the material is transported from the feed port 1.2 of the silo 1 to the feed chamber 1.1, the two screw pump bodies 2 can both work to discharge the material in the feed chamber 1.1 from the two discharge ports 1.3. That is, a double-head silo type screw pump is formed in which a silo 1 is adapted to feed the two screw pump bodies 2; when using it to transport materials, it is only necessary to set a set of material conveying device 4 to match the silo 1, so that the material can be efficiently transported by the two screw pump bodies 2, without setting two sets of material conveying devices 4, so as to reduce the transportation cost.

[0048] The screw pump body 2 in this embodiment includes a screw propeller 2.1 placed in the feed chamber 1.1 and a driving device 2.2 placed outside the feed chamber 1.1. The driving device 2.2 is placed outside the feed chamber 1.1 to prevent the material from corroding it.

[0049] The driving device 2.2 is transmission-connected to the screw propeller 2.1, and can drive the screw propeller 2.1 to rotate in a first direction (the first direction is clockwise or counterclockwise); and the screw propeller 2.1 is configured such that when the driving device 2.2 drives the screw propeller 2.1 to rotate in the first direction, the material in the feed chamber 1.1 can be discharged outward from the discharge port 1.3 (the discharge port 1.3 refers to: the discharge port 1.3 that matches the screw pump body 2).

[0050] Specifically, Figure 3 As shown in the figure, the screw propeller 2.1 in this embodiment includes a rotating shaft 2.11 placed in the feed chamber 1.1, one end of which is close to or inserted into the discharge port 1.3 matching the screw pump body 2, and the other end is connected to the driving device 2.2 through the transmission shaft inserted into the silo 1. The driving device 2.2 can drive the rotating shaft 2.11 to rotate along the first direction.

[0051] The screw propeller 2.1 also includes a blade 2.12 fixed to the outer periphery of the rotating shaft 2.11 and extending in a spiral shape. The blade 2.12 is configured to rotate synchronously when the rotating shaft 2.11 rotates along the first direction, and push the material in the feed chamber 1.1 to be discharged outward from the discharge port 1.3 matched with the screw pump body 2.

[0052] The driving device 2.2 is a rotating motor 2.21, and the rotating shaft 2.11 is connected to the output shaft of the rotating motor 2.21 by transmission, so that the driving device 2.2 can drive the rotating shaft 2.11 to rotate.

[0053] Alternatively, the driving device 2.2 is a rotating motor 2.21 and a reducer 2.22; in this case, the output shaft of the rotating motor 2.21 is connected to the rotating shaft 2.11 through the reducer 2.22, so as to reduce the rotation speed transmitted from the rotating motor 2.21 to the rotating shaft 2.11 and increase the torque, so as to drive the propeller 2.1 to rotate more stably.

[0054] Moreover, the driving device 2.2 in this embodiment is preferably configured to: drive the screw propeller 2.1 to rotate along a first direction, and also drive the screw propeller 2.1 to rotate along a second direction opposite to the first direction (when the first direction is clockwise, the second direction is counterclockwise; when the first direction is counterclockwise, the second direction is clockwise).

[0055] At this time, the driving device 2.2 drives the screw propeller 2.1 to rotate in the first direction as described above, thereby driving the material in the feed chamber 1.1 to be discharged outward from the discharge port 1.3; and driving the screw propeller 2.1 to rotate in the second direction drives the material in the discharge port 1.3 to be transported back to the feed chamber 1.1.

[0056] Implementation: When too much material is output from one discharge port 1.3 and there is a risk of clogging, while less material is output from the other discharge port 1.3, the spiral propeller 2.1 matched with the one discharge port 1.3 can be driven to rotate in the second direction to send the material in the one discharge port 1.3 back to the feed chamber 1.1, and part of the material transported back to the feed chamber 1.1 will flow toward the other discharge port 1.3, so as to reduce the discharge pressure of the one discharge port 1.3 and balance the discharge amount of the two discharge ports 1.3.

[0057] Further, in this embodiment, as shown in the attached Figure 2 As shown in FIG. 1 , the top of the feed chamber 1.1 is open to form a feed opening 1.2, so that, for example, Figure 1 As shown in , the material falling from top to bottom is received, so that the material can enter the feeding chamber 1.1 more smoothly under the action of gravity.

[0058] At this time, if the attached Figure 2 and attached Figure 4 As shown in the figure, the bottom of the feed chamber 1.1 may also be provided with: a partition 1.4 protruding upwards; the partition 1.4 is placed between the two screw propellers 2.1, which can separate the two screw propellers 2.1 to avoid interference between the two screw propellers 2.1. The size of the partition 1.4 is preferably adapted to the inner contour size of the feed chamber 1.1, so as to completely separate the two screw propellers 2.1 in the horizontal direction.

[0059] Furthermore, the edge of the upper end surface of the partition 1.4 can be chamfered so that the upper end surface of the partition 1.4 forms an upwardly protruding arc surface, so as to guide the material falling on the partition 1.4 to flow toward the screw propellers 2.1 on both sides, thereby avoiding unnecessary accumulation of materials on the partition 1.4.

[0060] Moreover, at least part of the side wall of the feed chamber 1.1 can also be inclined to guide the material to flow toward the screw propeller 2.1. In this way, when the material falls from the feed port 1.2 at the top of the feed chamber 1.1 to the side wall, it can flow to the screw propeller 2.1 better and more smoothly, and be discharged outward through the screw propeller 2.1.

[0061] Furthermore, considering that after the material enters the feed chamber 1.1, it will accumulate at the bottom of the feed chamber 1.1 under the action of gravity; therefore, in this embodiment, the discharge port 1.3 and the screw propeller 2.1 are preferably arranged close to the bottom of the feed chamber 1.1, so that when the screw propeller 2.1 is working, more and continuously material in the feed chamber 1.1 can be discharged outward from the discharge port 1.3, avoiding excessive accumulation of material at the bottom of the feed chamber 1.1.

[0062] On the basis of the above, the screw pump body 2 in this embodiment may further include: a stator 2.3 and a rotor 2.4, so as to better output the material in a directional manner.

[0063] Specifically, as attached Figure 3 As shown in the figure, the stator 2.3 can be fixed on the outer surface of the silo 1 by using common connecting parts such as screws, and the stator 2.3 has a discharge channel 2.31 inside, one end of which is connected to the discharge port 1.3, and the other end is open to form a guide port 2.32. At this time, the discharge port 1.3 also serves as the feed port of the discharge channel 2.31 in the stator.

[0064] Alternatively, when a discharge pipe fixed on a base or a bracket is provided at the discharge port 2.32 for discharging materials, the stator 2.3 is fixed between the silo 1 and the discharge pipe by means of a connecting piece such as a screw, and the discharge port 2.32 is connected to the discharge pipe so that the materials can flow out of the discharge pipe in a direction.

[0065] The rotor 2.4 is placed in the discharge channel 2.31, and one end of the rotor 2.4 close to the screw propeller 2.1 is connected to the rotating shaft 2.11 of the screw propeller 2.1, so that when the driving device 2.2 drives the screw propeller 2.1 to rotate along the first direction, it can rotate along with the screw propeller 2.1. Among them, the rotor 2.4 is set in a spiral extension, and the discharge channel 2.31 is set to match the spiral extension of the rotor 2.4, so that: when the rotor 2.4 rotates along the first direction, it can push the material flowing out of the discharge port 1.3 to flow toward the guide port 2.32 (the material in the feed chamber 1.1 is pushed to the discharge port 1.3, and the negative pressure suction force generated by the meshing transmission of the stator and rotor is sucked into the discharge channel 2.31, and then transported to the guide port 2.32 and then output outward). Among them, the specific adaptation setting of the stator 2.3 and the rotor 2.4 is a conventional setting of the screw pump structure, which will not be described in detail here.

[0066] In order to expand the use scenarios of the double-head silo screw pump, it can be used when two screw pump bodies are needed to transport materials more efficiently; it can also be used when a single screw pump body transports materials.

[0067] In this embodiment, as shown in the attached Figure 4 As shown in the figure, a detachable guide plate 3 may be additionally fixed in the feed chamber 1.1 by, for example, screws, and the guide plate 3 covers one of the screw propellers 2.1 in the feed chamber 1.1 from top to bottom. The guide plate 3 is arranged to extend obliquely so as to guide the material falling on the guide plate 3 to flow toward the other screw propeller 2.1; and the lower end of the guide plate 3 overlaps the partition plate 1.4.

[0068] In this way, when two screw pump bodies are needed to transport materials more efficiently, the guide plate 3 can be disassembled to achieve the following as described above: when the material is transported from the feed port 1.2 of the silo 1 to the feed chamber 1.1, the two screw pump bodies 2 work to discharge the material in the feed chamber 1.1 outwardly from the two discharge ports 1.3 respectively.

[0069] Alternatively, when only a single screw pump body is needed to transport the material, the guide plate 3 can be fixedly connected to the feed chamber 1.1; at this time, one screw propeller 2.1 is covered by the guide plate 3, and when the material falls into the feed chamber 1.1 from the top to the bottom from the feed port 1.2, the material falling on the guide plate 3 will also be guided to flow to another screw propeller 2.1, and through the screw propeller 2.1, to be output from a discharge port 1.3 that matches the screw propeller 2.1.

[0070] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 of the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0071] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. Double-head silo type screw pump, characterized by: The invention comprises a silo (1), wherein the silo (1) has: Feed chamber (1.1); A feed inlet (1.2) for external materials to enter the feed cavity (1.1); A discharge port (1.3) for discharging materials in the feed chamber (1.1) outwards; Two discharge ports (1.3) are provided, and each discharge port (1.3) is matched with: a screw pump body (2) for discharging the material in the feed cavity (1.1) outward from the discharge port (1.3).

2. The double-head silo type screw pump according to claim 1, characterized in that: The screw pump body (2) comprises: A screw propeller (2.1) disposed in the feed chamber (1.1); a driving device (2.2) disposed outside the feed chamber (1.1), which is in transmission connection with the screw propeller (2.1) and is capable of driving the screw propeller (2.1) to rotate in a first direction; The screw propeller (2.1) is configured to, when rotating in a first direction, discharge the material in the feed cavity (1.1) outwardly from the discharge port (1.3).

3. The double-head silo type screw pump according to claim 2, characterized in that: The top of the feed chamber (1.1) is open to form the feed port (1.2).

4. The double-head silo type screw pump according to claim 3, characterized in that: The bottom of the feed chamber (1.1) is provided with: a partition plate (1.4) protruding upwards; The partition plate (1.4) is placed between the two screw propellers (2.1).

5. The double-head silo type screw pump according to claim 4, characterized in that: The upper end surface of the partition (1.4) is formed with an arc-shaped surface so as to guide the material falling on the partition (1.4) to flow toward the screw propellers (2.1) on both sides.

6. The double-head silo type screw pump according to claim 4, characterized in that: At least part of the side wall of the feed chamber (1.1) is arranged to be inclined so as to guide the material to flow towards the screw propeller (2.1).

7. The double-head silo type screw pump according to claim 2, characterized in that: The discharge port (1.3) and the screw propeller (2.1) are both arranged close to the bottom of the feed chamber (1.1).

8. The double-head silo type screw pump according to claim 2, characterized in that: The driving device (2.2) is configured to drive the screw propeller (2.1) to rotate in a first direction, and to drive the screw propeller (2.1) to rotate in a second direction opposite to the first direction.

9. The double-head silo type screw pump according to any one of claims 2 to 8, characterized in that: The screw pump body (2) further comprises: A stator (2.3) connected to the silo (1), having a discharge channel (2.31) inside, one end of the discharge channel (2.31) being butt-connected to the discharge port (1.3), and the other end of the discharge channel (2.31) being open and forming a guide outlet (2.32); a rotor (2.4) disposed in the discharge channel (2.31) and connected to the screw propeller (2.1) in a transmission manner so as to be able to rotate along with the screw propeller (2.1); Furthermore, the rotor (2.4) extends in a spiral shape so that when it rotates in a first direction, it can push the material flowing out of the discharge port (1.3) to flow towards the guide outlet (2.32).

10. The double-head silo type screw pump according to any one of claims 4 to 6, characterized in that: A detachable guide plate (3) is fixedly connected in the feed chamber (1.1) and covers one of the screw propellers (2.1) in the feed chamber (1.1) from top to bottom; The guide plate (3) is arranged to extend obliquely so as to guide the material falling on the guide plate (3) to flow toward the other screw propeller (2.1); Furthermore, the lower end of the guide plate (3) is overlapped on the partition plate (1.4).

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