Hydraulic end structure of small multi-cylinder high-temperature plunger pump

Abstract

The invention relates to the technical field of fluid control, in particular to a small multi-cylinder high-temperature plunger pump fluid end structure. Comprising a valve box, an integrated packing box, a plurality of plungers, two heating medium outlet flanges, two heating medium inlet flanges and a fastening module, the integrated packing box is located on the outer side of the valve box, and the valve box is provided with a suction inlet, a discharge outlet, two through holes, two first heating cavities and two second heating cavities; wherein one through hole is respectively communicated with the two first heating cavities, the other through hole is respectively communicated with the two second heating cavities, the two heating medium outlet flanges are respectively connected with the corresponding first heating cavities, and the two heating medium inlet flanges are respectively connected with the corresponding second heating cavities. The heating cavity and the heating pipeline can be effectively arranged, and the actual requirements of high temperature, high pressure and large displacement can be met.

Description

Technical Field

[0001] The invention relates to the technical field of fluid control, and in particular to a hydraulic end structure of a small multi-cylinder high-temperature plunger pump. Background Art

[0002] At present, high-temperature plunger pumps can adapt to high-temperature environments and are mainly used in petrochemical, fertilizer, metallurgy, steel mills, manufacturing, shipbuilding, sugar production, papermaking and chemical industries. They are usually composed of plungers, pump bodies, valves, motors and other components. The plunger is used to change the volume of the pump chamber during the sliding process to achieve fluid compression and output.

[0003] However, for small multi-cylinder high-temperature plunger pumps, under the actual demand for high temperature, high pressure and large displacement, it is difficult to effectively arrange the heating cavity and heating pipeline in the conventional cavity due to the limitations of the valve box structure and external dimensions, and it is difficult to meet the actual demand for high temperature, high pressure and large displacement. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic end structure of a small multi-cylinder high-temperature plunger pump, aiming to solve the technical problem that the existing small multi-cylinder high-temperature plunger pump is limited by the valve box structure and the external dimensions, and the conventional cavity is difficult to effectively arrange the heating cavity and heating pipeline, and it is difficult to meet the actual needs of high temperature, high pressure and large displacement.

[0005] To achieve the above-mentioned objectives, the present invention adopts a small multi-cylinder high-temperature plunger pump hydraulic end structure, including a valve box, an integrated stuffing box, multiple plungers, two heating medium outlet flanges, two heating medium inlet flanges and a fastening module, wherein the fastening module is arranged on the valve box, the integrated stuffing box is connected to the fastening module and is located on the outside of the valve box, and multiple plungers are arranged in the integrated stuffing box, the valve box has a suction port, an exhaust port, two through holes, two first heating cavities and two second heating cavities, one of the through holes is respectively connected to the two first heating cavities, and the other through hole is respectively connected to the two second heating cavities, the two heating medium outlet flanges are respectively connected to the corresponding first heating cavities, the two heating medium inlet flanges are respectively connected to the corresponding second heating cavities, and the two heating medium outlet flanges and the two heating medium inlet flanges are both located on the side of the valve box away from the integrated stuffing box.

[0006] Among them, the integrated stuffing box has a cooling water inlet, a cooling water outlet, a cooling water annular cavity and multiple stuffing box cavities, and the multiple plungers are respectively adapted to the corresponding stuffing box cavities, and the cooling water inlet and the cooling water outlet are both connected to the cooling water annular cavity.

[0007] The integrated stuffing box further comprises an injection port, a lubrication port and a flushing port. The injection port, the lubrication port and the flushing port are multiple in number and evenly distributed on the integrated stuffing box.

[0008] Wherein, the hydraulic end structure of the small multi-cylinder high-temperature plunger pump also includes a cooling water distribution valve, and the cooling water distribution valve is arranged in the cooling water inlet.

[0009] Wherein, the fastening module includes two fixing seats, both of which are connected to the valve box and are located on the outer side wall of the valve box, and the integrated stuffing box is fixedly connected to the two fixing seats respectively and is located on the outer side of the valve box.

[0010] The hydraulic end structure of a small multi-cylinder high-temperature plunger pump of the present invention is provided with a heating chamber for circulating a heating medium at positions parallel to the suction port and the discharge port on both sides of the valve box, and the heating chamber is divided into two first heating chambers and two second heating chambers. The first heating chambers on the left and right of the discharge port are connected through the through holes inside the valve box, and the second heating chambers on the left and right of the suction port are connected through the through holes inside the valve box to form a heating medium circulation loop. By designing the connecting holes inside the heating chamber, the number of the heating medium inlet flange, the heating medium outlet flange and the external pipeline is halved. At the same time, the heating medium inlet flange and the heating medium outlet flange are both arranged on one side of the integrated stuffing box, which is convenient for taking over the external pipeline of the heating medium and reserving space on one side of the integrated stuffing box. By setting the above structure, it is possible to effectively arrange the heating chamber and the heating pipeline, which can meet the actual needs of high temperature, high pressure and large displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a structural schematic diagram of the hydraulic end structure of a small multi-cylinder high-temperature plunger pump of the present invention.

[0013] Figure 2 It is a sectional view of the overall internal structure of the hydraulic end structure of the small multi-cylinder high-temperature plunger pump of the present invention.

[0014] Figure 3 It is a structural rear view of the valve box of the present invention.

[0015] Figure 4 The present invention Figure 3 AA line structural cross-section view.

[0016] Figure 5 It is a structural schematic diagram of the valve box of the present invention.

[0017] Figure 6 It is a top view of the structure of the integrated stuffing box of the present invention.

[0018] Figure 7 It is a structural schematic diagram of the integrated stuffing box of the present invention.

[0019] Figure 8 The present invention Figure 6 BB line structural cross-sectional view.

[0020] Fig. 9 The present invention Figure 6 CC line structural cross-sectional view.

[0021] Fig.10 The present invention Figure 6 DD line structural cross-sectional view.

[0022] 101-valve box, 102-integrated stuffing box, 103-plunger, 104-heating medium outlet flange, 105-heating medium inlet flange, 106-fixed seat, 107-cooling water inlet, 108-cooling water outlet, 109-cooling water annular cavity, 110-stuffing box cavity, 111-injection port, 112-lubrication port, 113-flushing port, 114-cooling water distribution valve, 115-intake port, 116-discharge port, 117-through hole, 118-first heating cavity, 119-second heating cavity. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] See also Figures 1 to 10The present invention provides a small multi-cylinder high-temperature plunger 103 pump hydraulic end structure, comprising a valve box 101, an integrated stuffing box 102, a plurality of plungers 103, two heating medium outlet flanges 104, two heating medium inlet flanges 105 and a fastening module, wherein the fastening module is arranged on the valve box 101, the integrated stuffing box 102 is connected to the fastening module and is located outside the valve box 101, the plurality of plungers 103 are arranged in the integrated stuffing box 102, the valve box 101 has a suction port 115, a discharge port 116, two through holes 117, two first heating cavities 118 and two second heating cavities 119, one of the through holes 117 is communicated with the two first heating cavities 118 respectively, the other through holes 117 is communicated with the two second heating cavities 119 respectively, the two heating medium outlet flanges 104 are connected with the corresponding first heating cavities 118 respectively, the two heating medium inlet flanges 105 are connected with the corresponding second heating cavities 119 respectively, and the two heating medium outlet flanges 104 and the two heating medium inlet flanges 105 are both located on the side of the valve box 101 away from the integrated stuffing box 102.

[0025] In this embodiment, heating cavities for heating medium circulation are provided at positions parallel to the suction port 115 and the discharge port 116 on both sides of the valve box 101, which are divided into two first heating cavities 118 and two second heating cavities 119. The first heating cavities 118 on the left and right of the discharge port 116 are connected through the through hole 117 inside the valve box 101, and the second heating cavities 119 on the left and right of the suction port 115 are connected through the through hole 117 inside the valve box 101 to form a heating medium circulation loop. By designing the connecting hole inside the heating cavity, the number of the heating medium inlet flange 105, the heating medium outlet flange 104 and the external pipeline is halved. At the same time, the heating medium inlet flange 105 and the heating medium outlet flange 104 are both arranged on one side of the integrated stuffing box 102, so that it is convenient to take over the external pipeline of the heating medium, and reserve space on one side of the integrated stuffing box 102. By setting the above structure, it is achieved that the heating cavity and the heating pipeline can be effectively arranged to meet the actual needs of high temperature, high pressure and large displacement.

[0026] Furthermore, the integrated stuffing box 102 has a cooling water inlet 107, a cooling water outlet 108, a cooling water annular cavity 109 and a plurality of stuffing box cavities 110, and the plurality of plungers 103 are respectively adapted to the corresponding stuffing box cavities 110, and the cooling water inlet 107 and the cooling water outlet 108 are both connected to the cooling water annular cavity 109.

[0027] In this embodiment, the integrated stuffing box 102 can arrange the cooling water annular cavity 109 on the four sides of the integrated stuffing box 102, which has a large cooling area, good cooling effect, and is not affected by the cylinder spacing. Multiple cylinders share one cooling water annular cavity 109, with fewer external interfaces (only two interfaces, one inlet and one outlet), fewer external piping, and less space occupied.

[0028] Furthermore, the integrated stuffing box 102 also has an injection port 111 , a lubrication port 112 and a flushing port 113 . The injection port 111 , the lubrication port 112 and the flushing port 113 are multiple in number and evenly distributed on the integrated stuffing box 102 .

[0029] In this embodiment, the injection port 111 is used to inject sealing medium or lubricant into the integrated stuffing box 102 to enhance the packing sealing effect and prevent medium leakage. The lubrication port 112 is used to provide lubricant to the key components of the plunger 103 pump to reduce friction, wear and heat accumulation. The flushing port 113 is used to pass cleaning liquid or coolant into the integrated stuffing box 102 to remove impurities, dirt and heat accumulated inside the pump body.

[0030] Furthermore, the hydraulic end structure of the small multi-cylinder high-temperature plunger 103 pump also includes a cooling water distribution valve 114 , and the cooling water distribution valve 114 is arranged in the cooling water inlet 107 .

[0031] In this embodiment, the cooling water distribution valve 114 is provided at the cooling water inlet 107 and a guide plate is provided in the cooling water annular cavity 109 to ensure that the cooling water circulates along the cooling water annular cavity 109, thereby further improving the cooling effect.

[0032] Furthermore, the fastening module includes two fixing seats 106 , both of which are connected to the valve box 101 and are located on the outer side wall of the valve box 101 , and the integrated stuffing box 102 is fixedly connected to the two fixing seats 106 and is located on the outer side of the valve box 101 .

[0033] In this embodiment, the two fixing seats 106 are disposed outside the valve box 101 , and the two fixing seats 106 are used to facilitate installation and removal of the integrated stuffing box 102 outside the valve box 101 , which is easy to operate.

[0034] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A small multi-cylinder high-temperature plunger pump hydraulic end structure, characterized in that: It includes a valve box, an integrated stuffing box, multiple plungers, two heating medium outlet flanges, two heating medium inlet flanges and a fastening module, wherein the fastening module is arranged on the valve box, the integrated stuffing box is connected to the fastening module and is located on the outside of the valve box, and multiple plungers are arranged in the integrated stuffing box, the valve box has a suction port, an exhaust port, two through holes, two first heating cavities and two second heating cavities, one of the through holes is respectively connected to the two first heating cavities, and the other through hole is respectively connected to the two second heating cavities, the two heating medium outlet flanges are respectively connected to the corresponding first heating cavities, the two heating medium inlet flanges are respectively connected to the corresponding second heating cavities, and the two heating medium outlet flanges and the two heating medium inlet flanges are both located on the side of the valve box away from the integrated stuffing box.

2. The small multi-cylinder high-temperature plunger pump hydraulic end structure according to claim 1, characterized in that: The integrated stuffing box has a cooling water inlet, a cooling water outlet, a cooling water annular cavity and a plurality of stuffing box cavities. The plurality of plungers are respectively adapted to the corresponding stuffing box cavities. The cooling water inlet and the cooling water outlet are both connected to the cooling water annular cavity.

3. The hydraulic end structure of a small multi-cylinder high-temperature plunger pump as claimed in claim 2, characterized in that: The integrated stuffing box also has an injection port, a lubrication port and a flushing port. The injection port, the lubrication port and the flushing port are multiple in number and evenly distributed on the integrated stuffing box.

4. The small multi-cylinder high-temperature plunger pump hydraulic end structure as claimed in claim 3, characterized in that: The hydraulic end structure of the small multi-cylinder high-temperature plunger pump also includes a cooling water distribution valve, which is arranged in the cooling water inlet.

5. The small multi-cylinder high-temperature plunger pump hydraulic end structure as claimed in claim 4, characterized in that: The fastening module includes two fixing seats, both of which are connected to the valve box and are located on the outer side wall of the valve box. The integrated stuffing box is fixedly connected to the two fixing seats respectively and is located on the outer side of the valve box.

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