Energy-saving feed pump

Abstract

The utility model discloses an energy -saving type feed pump belongs to fluid conveying equipment technical field, it includes: conveying cylinder, material cylinder, material cylinder is divided into material chamber A and material chamber B by first baffle, first pressure transmission cylinder is divided into first cavity A and first cavity B by first elastic diaphragm, first cavity A is linked with material chamber A, and first cavity B is linked with rodless chamber, second pressure transmission cylinder is divided into second cavity A and second cavity B by second elastic diaphragm, second cavity A is linked with material chamber B, and second cavity B is linked with rod chamber. The energy -saving type feed pump provided by the utility model avoids the direct contact of driving mechanism and material, is applicable to the conveying of corrosive, strong abrasiveness or containing impurity material, effectively buffers pressure impact by pressure transmission medium, avoids the direct action of pressure fluctuation to sealing component, realizes the simultaneous discharge in the feeding process through the double -cavity alternate conveying of material chamber, makes the continuous pumping of material.

Description

Technical Field

[0001] This utility model relates to an energy-saving feed pump, belonging to the technical field of fluid conveying equipment. Background Technology

[0002] Feed pumps are core equipment for quantitative material conveying in industrial production. They are widely used in many industries such as chemical, metallurgical, and construction. Their operational stability, energy consumption level, and service life directly affect production efficiency and production cost control.

[0003] Currently, traditional feed pumps on the market generally suffer from several technical defects: First, the drive mechanism is in direct contact with the conveyed material. When conveying corrosive, abrasive, or impurity-containing materials, the drive is prone to corrosion and wear, leading to frequent equipment failures and requiring frequent maintenance and replacement of parts, significantly increasing equipment maintenance costs. Second, when using hydraulic cylinders as the drive mechanism, the power transmission structure lacks an effective buffering mechanism, causing pressure fluctuations generated by the hydraulic drive to directly affect the sealing components, easily causing fatigue damage to the sealing components and severely shortening the overall service life of the equipment. Third, the material conveying channel design is unreasonable, resulting in unstable flow velocity of the material during suction and discharge. High-speed flow easily generates eddies, causing impurities to accumulate in the channel, which not only easily clogs the pipeline but also reduces the material conveying accuracy. Fourth, the power utilization efficiency is low. Traditional equipment adopts a unidirectional motion drive mode, resulting in a large amount of idle energy and poor energy-saving effect.

[0004] The aforementioned problems result in existing feed pumps having poor adaptability in complex material conveying scenarios, making it difficult to simultaneously meet the requirements of conveying efficiency, operational stability, and energy saving. Utility Model Content

[0005] In order to solve the problems existing in the prior art, this utility model provides an energy-saving feed pump, which improves the corrosion resistance, operational stability and energy saving of the equipment.

[0006] This utility model achieves the above objectives by adopting the following technical solutions:

[0007] An energy-saving feed pump includes:

[0008] A conveying cylinder, comprising a cylinder body, a piston, and a piston rod, wherein the cylinder body is divided into a rod chamber and a rodless chamber by the piston, and the first end of the piston rod is connected to the piston, and the other end extends out of the cylinder body and is connected to a linear drive mechanism.

[0009] A material cylinder, wherein the material cylinder is divided into a material chamber A and a material chamber B by a first partition;

[0010] The first pressure-transmitting cylinder is divided into a first cavity A and a first cavity B by a first elastic diaphragm. The first cavity A is connected to the material cavity A, and the first cavity B is connected to the rodless cavity.

[0011] The second pressure transmission cylinder is divided into a second cavity A and a second cavity B by a second elastic diaphragm. The second cavity A is connected to the material cavity B, and the second cavity B is connected to the rod cavity.

[0012] Material chamber A is provided with inlet A and outlet A, and material chamber B is provided with inlet B and outlet B.

[0013] Furthermore, the energy-saving feed pump provided by this utility model also includes a feed tank, a feed pipe, a discharge tank, and a discharge connecting pipe;

[0014] The feed tank is connected to the feed tank, and the feed tank is also connected to feed port A through feed check valve A and feed port B through feed check valve B;

[0015] The discharge tank is divided into tank cavity A and tank cavity B by a second partition; the discharge port A is connected to tank cavity A, and tank cavity A is connected to the discharge connecting pipe through discharge one-way valve A 7101; the discharge port B is connected to tank cavity B, and tank cavity B is connected to the discharge connecting pipe through discharge one-way valve B 7102.

[0016] Preferably, the feed connecting pipe is connected to a feed pipe, and the discharge connecting pipe is connected to a discharge pipe.

[0017] In one specific embodiment, the first pressure-transmitting cylinder is formed by a first housing A and a first housing B, and a first elastic diaphragm is sandwiched between the first housing A and the first housing B.

[0018] The second pressure-transmitting cylinder is formed by the second housing A and the second housing B, and the second elastic diaphragm is sandwiched between the second housing A and the second housing B.

[0019] Furthermore, both the first cover A and the first cover B arch away from the first elastic diaphragm, and both the second cover A and the second cover B arch away from the second elastic diaphragm.

[0020] In a preferred embodiment, the first cavity A is connected to the material cavity A via a material pipe, and the second cavity B is connected to the rodless cavity via a medium pipe.

[0021] Specifically, the first cover A has a through hole communicating with the material pipe, the first cover B has a through hole communicating with the rodless cavity, the second cover A has a through hole communicating with the material cavity B, and the second cover B has a through hole communicating with the medium pipe.

[0022] The first casing B also serves as the wall of the rodless cavity, and the second casing B also serves as the wall of the material cavity B.

[0023] Preferably, the rodless cavity is provided with a medium replenishment port, and the rod cavity or medium tube is provided with a medium replenishment port.

[0024] Specifically, the rod-shaped cavity and the rodless cavity are filled with a pressure-transmitting medium, which is water.

[0025] The beneficial effects of this utility model include, but are not limited to:

[0026] The energy-saving feed pump provided by this utility model uses a first pressure transmission mechanism and a second pressure transmission mechanism to isolate the material from the drive mechanism, avoiding direct contact between the drive mechanism and the material. It is suitable for conveying corrosive, abrasive, or impurity-containing materials in industries such as chemical, metallurgical, and construction. The pressure transmission medium effectively buffers pressure shocks, preventing pressure fluctuations from directly affecting the sealing components and improving the service life of the feed pump. The dual-chamber alternating conveying of the material chamber enables simultaneous discharge during the feeding process, improving the continuity of material pumping, making full use of the reciprocating power of the drive mechanism, improving power utilization efficiency, and achieving energy saving and consumption reduction. The two tank chambers work in conjunction with the two material chambers respectively, realizing independent discharge of the two material chambers, avoiding eddies and mixing problems during the discharge process, effectively ensuring the flow rate stability and chamber independence during the material suction and discharge process, and improving the quantitative accuracy of material conveying. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the energy-saving feed pump provided by this utility model;

[0029] Figure 2 This is a schematic diagram of the working state of the feed pump during the piston's movement towards the rod chamber.

[0030] Figure 3 A schematic diagram of the working state of the feed pump during the piston's movement towards the rodless chamber;

[0031] In the diagram, 100 is the conveying cylinder; 110 is the cylinder body; 101 is the rod chamber; 102 is the rodless chamber; 120 is the piston; and 130 is the piston rod.

[0032] 200. Material cylinder; 201. Material chamber A; 202. Material chamber B; 210. First partition; 2011. Inlet A; 2012. Outlet A; 2021. Inlet B; 2022. Outlet B;

[0033] 300, First pressure transmission cylinder; 301, First cavity A; 302, First cavity B; 310, First elastic diaphragm; 320, First cover A; 330, First cover B;

[0034] 400. Second pressure transmission cylinder; 401. Second cavity A; 402. Second cavity B; 410. Second elastic diaphragm; 420. Second cover A; 430. Second cover B;

[0035] 500. Linear drive mechanism;

[0036] 610. Feed tank; 620. Feed pipe; 6101. Feed check valve A; 6102. Feed check valve B;

[0037] 710. Discharge tank; 701. Tank cavity A; 702. Tank cavity B; 711. Second partition; 720. Discharge connecting pipe; 7101. Discharge check valve A; 7102. Discharge check valve B;

[0038] 810. Material pipe; 820. Medium pipe;

[0039] 910, Through hole; 920, Medium replenishment port. Detailed Implementation

[0040] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0041] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] like Figure 1 As shown, the energy-saving feed pump provided by this utility model includes a conveying cylinder 100, a material cylinder 200, a first pressure transmission cylinder 300, a second pressure transmission cylinder 400, and a linear drive mechanism 500.

[0043] The conveying cylinder 100 includes a cylinder body 110, a piston 120 and a piston rod 130. The cylinder body 110 is divided into a rod chamber 101 and a rodless chamber 102 by the piston 120. The first end of the piston rod 130 is connected to the piston 120, and the other end extends out of the cylinder body 110 and is connected to the linear drive mechanism 500.

[0044] The material cylinder 200 is divided into material chamber A 201 and material chamber B 202 by the first partition 210.

[0045] The first pressure transmission cylinder 300 is divided into a first cavity A 301 and a first cavity B 302 by a first elastic diaphragm 310. The first cavity A 301 is connected to the material cavity A 201, and the first cavity B 302 is connected to the rodless cavity 102.

[0046] The second pressure transmission cylinder 400 is divided into a second cavity A 401 and a second cavity B 402 by a second elastic diaphragm 410. The second cavity A 401 is connected to the material cavity B 202, and the second cavity B 402 is connected to the rod cavity 101.

[0047] Material chamber A 201 is provided with inlet A 2011 and outlet A 2012, and material chamber B 202 is provided with inlet B 2021 and outlet B 2022.

[0048] The first elastic diaphragm 310 and the second elastic diaphragm 410 are usually made of rubber, which has good stretching and elongation properties.

[0049] The rod chamber 101 and the rodless chamber 102 are filled with a pressure-transmitting medium, which is usually water.

[0050] The energy-saving feed pump provided by this utility model also includes a feed tank 610, a feed pipe 620, a discharge tank 710, and a discharge connecting pipe 720.

[0051] Feed tank 610 is connected to feed tank 610. Feed tank 610 is also connected to feed port A2011 through feed check valve A 6101 and to feed port B 2021 through feed check valve B 6102. The check valves ensure unidirectional flow of materials and prevent backflow of materials.

[0052] The discharge tank 710 is divided into tank cavity A 701 and tank cavity B 702 by a second partition 711. Discharge port A 2012 is connected to tank cavity A 701, and tank cavity A 701 is connected to the discharge connecting pipe 720 via discharge check valve A 7101. Discharge port B 2022 is connected to tank cavity B 702, and tank cavity B 702 is connected to the discharge connecting pipe 720 via discharge check valve B 7102. Typically, the second partition 711 is welded inside the discharge tank 710.

[0053] The first cavity A 301 is connected to the material cavity A201 through the material pipe 810, and the second cavity B 402 is connected to the rodless cavity 102 through the medium pipe 820.

[0054] The operation mode of the energy-saving feed pump provided by this utility model is as follows:

[0055] (1) The stage in which the piston 120 moves toward the rod chamber 101:

[0056] like Figure 2As shown, when the drive mechanism moves the piston 120 and piston rod 130 towards the rod chamber 101, the water medium in the rod chamber 101 is under compression. The pressure is transmitted to the medium pipe 820 and the water medium in the second chamber B 402, causing the second elastic diaphragm 410 to bulge towards the second chamber A 401. This, in turn, transmits the pressure to the second chamber A 401, the material chamber B 202, and the tank chamber B 702, causing the material to be discharged through the discharge check valve B 7102 to the discharge connecting pipe 720. Simultaneously, the water medium in the rodless chamber 102 is under negative pressure. This negative pressure is transmitted to the water medium in the first chamber B 302, causing the first elastic diaphragm 310 to bulge towards the first chamber B 302. This, in turn, creates negative pressure in the first chamber A 301, the material pipe 810, and the material chamber A 201. Under atmospheric pressure, the external material passes sequentially through the feed pipe 620, the feed tank 610, and the feed check valve A 201. 6101 is drawn into the material chamber A201; through the above process, the material chamber B202 is discharged and the material chamber A201 is fed.

[0057] (2) The stage in which piston 120 moves toward rodless chamber 102:

[0058] like Figure 3 As shown, when the drive mechanism moves the piston 120 and piston rod 130 towards the rodless chamber 102, the water medium in the rod chamber 101 is under negative pressure. This negative pressure is transmitted to the water medium in the medium pipe 820 and the second chamber B 402, causing the second elastic diaphragm 410 to bulge towards the first chamber B 302. This creates negative pressure in the material chamber B 202, allowing external material to be drawn into the material chamber B 202 sequentially through the feed pipe 620, feed tank 610, and feed check valve B 6102. Simultaneously, the water medium in the rodless chamber 102 is under compression, and the pressure is transmitted to the water medium in the first chamber B 302, causing the first elastic diaphragm 310 to bulge towards the first chamber A 301. This compresses the material in the material pipe 810 and the material chamber A 201, allowing the material to flow into the tank chamber A 701 via the material chamber A 201, and then through the discharge check valve A 701. 7101 is discharged into the discharge connecting pipe 720; through the above process, the feeding of material chamber B 202 and the discharge of material chamber A 201 are realized.

[0059] Figure 2 and Figure 3 In the image, the red arrow indicates the direction of movement.

[0060] The feed pump provided by this utility model, through the reciprocating cycle of the above two stages, realizes the alternating suction and discharge of material chambers A201 and B202, completing the continuous conveying of materials; moreover, the reciprocating power of the hydraulic cylinder is fully utilized, greatly improving energy efficiency; the first elastic diaphragm 310 and the second elastic diaphragm 410 completely isolate the material side from the medium side, eliminating the problems of water-material mixing and material corrosion of parts; using water as the power transmission medium of the hydraulic cylinder, the expansion and contraction performance of the first elastic diaphragm 310 and the second elastic diaphragm 410 can effectively buffer pressure shocks, avoid pressure fluctuations directly acting on the seals and conveying components, prevent fatigue damage to the seals, and extend the overall service life of the equipment; tank chambers A201 and B202 work in conjunction with material chambers A201 and B202 respectively, realizing the continuous conveying of materials in material chambers A201 and B202. The 202 independent discharge system avoids eddies and mixing problems during the discharge process, prevents impurities from scaling and clogging the flow channel, effectively ensures the flow rate stability and chamber independence during the material suction and discharge process, and improves the quantitative accuracy of material conveying.

[0061] In one specific embodiment, the first pressure-transmitting cylinder 300 is formed by the enclosure of the first housing A 320 and the first housing B 330, and the first elastic diaphragm 310 is sandwiched between the first housing A 320 and the first housing B 330.

[0062] The second pressure transmission cylinder 400 is formed by the second cover A 420 and the second cover B 430, and the second elastic diaphragm 420 is sandwiched between the second cover A 420 and the second cover B 430.

[0063] The first cover A 320 and the first cover B 330 both arch away from the first elastic diaphragm 310, and the second cover A 420 and the second cover B 430 both arch away from the second elastic diaphragm 410, thus forming a spherical cavity through the covers.

[0064] The first cover A 320 has a through hole 910 communicating with the material pipe 810, and the second cover B 420 has a through hole 910 communicating with the medium pipe 820.

[0065] The first cover A 320 has a through hole 910 communicating with the material pipe 810, the first cover B 330 has a through hole 910 communicating with the rodless cavity 101, the second cover A 420 has a through hole 910 communicating with the material cavity B 202, and the second cover B 430 has a through hole 910 communicating with the medium pipe 820.

[0066] The first housing B 330 also serves as the wall of the rodless cavity 102, and the second housing B 420 also serves as the wall of the material cavity B 202.

[0067] The rodless chamber 102 is provided with a medium replenishment port 920, and the rod chamber 101 or the medium pipe 820 is provided with a medium replenishment port 920. The two medium replenishment ports 920 replenish the medium to the rodless chamber 102 and the rod chamber 101 of the conveying cylinder 100, respectively, to ensure that the medium chamber is full and the pressure is balanced, to avoid the problem of power transmission failure caused by pressure imbalance or lack of medium, to ensure the stable transmission of power to the material chamber, and to improve the quantitative accuracy of material conveying.

[0068] In this invention, the linear drive mechanism 500 can be a hydraulic cylinder or other conventional mechanical form. The cylinder rod of the hydraulic cylinder is fixedly connected to the piston rod 130 of the conveying cylinder 100 via a coupling to achieve synchronous power linkage. A protective cover is provided on the outside of the connection part for easy maintenance and effective protection against damage to components. The feed pump is mounted on the base for easy transportation and installation.

[0069] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. An energy-saving feed pump, characterized in that, include: A conveying cylinder, comprising a cylinder body, a piston, and a piston rod, wherein the cylinder body is divided into a rod chamber and a rodless chamber by the piston, and the first end of the piston rod is connected to the piston, and the other end extends out of the cylinder body and is connected to a linear drive mechanism. A material cylinder, wherein the material cylinder is divided into a material chamber A and a material chamber B by a first partition; The first pressure-transmitting cylinder is divided into a first cavity A and a first cavity B by a first elastic diaphragm. The first cavity A is connected to the material cavity A, and the first cavity B is connected to the rodless cavity. The second pressure transmission cylinder is divided into a second cavity A and a second cavity B by a second elastic diaphragm. The second cavity A is connected to the material cavity B, and the second cavity B is connected to the rod cavity. Material chamber A is provided with inlet A and outlet A, and material chamber B is provided with inlet B and outlet B.

2. The energy-saving feed pump according to claim 1, characterized in that, It also includes a feed tank, a feed pipe, a discharge tank, and a discharge connecting pipe; The feed tank is connected to the feed tank, and the feed tank is also connected to feed port A through feed check valve A and feed port B through feed check valve B; The discharge tank is divided into tank cavity A and tank cavity B by a second partition; the discharge port A is connected to tank cavity A, and tank cavity A is connected to the discharge connecting pipe through discharge one-way valve A; the discharge port B is connected to tank cavity B, and tank cavity B is connected to the discharge connecting pipe through discharge one-way valve B.

3. The energy-saving feed pump according to claim 2, characterized in that, The feed connecting pipe is connected to a feed pipe, and the discharge connecting pipe is connected to a discharge pipe.

4. The energy-saving feed pump according to claim 1, characterized in that, The first pressure-transmitting cylinder is formed by the enclosure of the first housing A and the first housing B, and the first elastic diaphragm is sandwiched between the first housing A and the first housing B. The second pressure-transmitting cylinder is formed by the second housing A and the second housing B, and the second elastic diaphragm is sandwiched between the second housing A and the second housing B.

5. The energy-saving feed pump according to claim 4, characterized in that, Both the first cover A and the first cover B arch away from the first elastic diaphragm, and both the second cover A and the second cover B arch away from the second elastic diaphragm.

6. The energy-saving feed pump according to claim 4, characterized in that, The first cavity A is connected to the material cavity A via a material pipe, and the second cavity B is connected to the rodless cavity via a medium pipe.

7. The energy-saving feed pump according to claim 6, characterized in that, The first cover A has a through hole communicating with the material pipe, the first cover B has a through hole communicating with the rodless cavity, the second cover A has a through hole communicating with the material cavity B, and the second cover B has a through hole communicating with the medium pipe. The first casing B also serves as the wall of the rodless cavity, and the second casing B also serves as the wall of the material cavity B.

8. The energy-saving feed pump according to claim 6, characterized in that, The rodless cavity is provided with a medium replenishment port, and the rod cavity or medium tube is provided with a medium replenishment port.

9. The energy-saving feed pump according to claim 1, characterized in that, The rod-shaped chamber and the rodless chamber are filled with a pressure-transmitting medium, which is water or hydraulic oil.

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