Top cover sealing device for ultrahigh pressure hydraulic pump

Abstract

The utility model discloses a top cover sealing device for an ultrahigh pressure hydraulic pump, and relates to the technical field of sealing devices. The pump comprises a pump body, a first sealing assembly, a pressing assembly, a top cover and a warning assembly. The first sealing assembly and the pressing assembly are both arranged in the pump body, the top cover is connected to the top of the pump body in a threaded and sleeved mode, and the warning assembly is arranged at the top of the top cover. A mounting groove is formed in the pump body, and a plurality of limiting openings are formed in the inner wall of the pump body; the warning assembly comprises an S pipe, the S pipe is fixedly connected to the top of the top cover and communicates with the top cover, a pressing switch is installed at the opening end of the S pipe, a piston is movably connected into the S pipe in a sleeved mode, a warning device is fixedly connected to the top of the top cover, and the warning device is electrically connected with the pressing switch. Oil in the S-shaped pipe is pushed through the increased air pressure, then the oil pushes the piston to extrude the pressing switch to start the warning device to send out an alarm signal, workers are reminded to conduct maintenance and reinforcement in time, and accidents are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing devices, and particularly relates to a top cover sealing device for an ultra-high pressure hydraulic pump. Background Art

[0002] An ultra-high pressure hydraulic pump is a hydraulic pump that can generate a pressure exceeding 32 megapascals (MPa), and its working pressure can often reach 100 MPa or even higher. It is mainly used in fields such as metal extrusion, hydroforming, powder metallurgy, synthetic diamond, ultra-high pressure water jet cutting machines, and pressure resistance tests. The main function of this pump is to drive the hydraulic system, provide high pressure to meet specific process requirements, and efficiently complete a large amount of work with a small flow rate. During this process, ensuring the top cover seal of the ultra-high pressure hydraulic pump can effectively prevent high-pressure oil leakage, ensure the stable operation of the system under the predetermined working pressure, and avoid potential safety accidents such as personal injuries and fires caused by leakage.

[0003] During the long-term operation of the ultra-high pressure hydraulic pump, due to vibration, the bolts of the existing top cover sealing device may become loose. At the same time, in a high-temperature and high-pressure environment, the sealing ring is prone to aging, which may lead to leakage problems. In the initial stage, the leakage volume may be small and difficult to detect, but over time, the leakage situation may gradually intensify, thus bringing potential safety risks.

[0004] Therefore, we provide a top cover sealing device for an ultra-high pressure hydraulic pump to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a top cover sealing device for an ultra-high pressure hydraulic pump. By increasing the air pressure, one end of the internal oil in the S-tube is raised, pushing the piston to squeeze the push switch to activate the warning device to send an alarm signal, reminding the staff to repair and reinforce in time, and solving the problem that it is difficult to detect when there is a small leakage in the existing top cover sealing device of the ultra-high pressure hydraulic pump.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a top cover sealing device for an ultra-high pressure hydraulic pump, including a pump body, a first sealing component, a pressing component, a top cover, and a warning component; the first sealing component and the pressing component are both arranged inside the pump body, the top cover is threadedly sleeved on the top of the pump body, and the warning component is arranged on the top of the top cover;

[0008] An installation groove is opened inside the pump body, and a plurality of limiting ports are opened on the inner wall of the pump body;

[0009] The warning component includes an S-tube. The S-tube is fixedly connected to the top of the top cover and is in communication with the top cover. A push switch is installed at the open end of the S-tube. A piston is movably sleeved inside the S-tube, and the piston is located below the push switch. A warning device is fixedly connected to the top of the top cover, and the warning device is electrically connected to the push switch.

[0010] The present utility model is further provided that the inside of the S-tube is filled with hydraulic oil, and a vent hole is provided inside the S-tube, and the vent hole is close to the end where the push switch is installed.

[0011] The present utility model is further provided that the first sealing component includes a sealing cover. The sealing cover is movably sleeved inside the installation groove. A first sealing ring is fixedly connected to the bottom of the sealing cover, and a screw rod is fixedly connected to the inside of the sealing cover.

[0012] The present utility model is further provided that the installation groove is in a three-step stepped shape. The number of the first sealing rings is three, and the three first sealing rings are respectively located at the tops of the three steps.

[0013] The present utility model is further provided that the pressing component includes a lower pressing frame. The lower pressing frame is located on the top of the sealing cover. A plurality of insertion blocks are fixedly connected to the outside of the lower pressing frame. A threaded sleeve is rotatably connected to the inside of the lower pressing frame, and the threaded sleeve is threadedly sleeved on the outside of the screw rod. A limiting component is arranged on the outside of the threaded sleeve, and a second sealing component is arranged on the outside of the pump body.

[0014] The present utility model is further provided that the limiting component includes a ratchet gear. The ratchet gear is fixedly connected to the outside of the threaded sleeve. A spring latch is fixed inside the lower pressing frame, and the spring latch cooperates with the ratchet gear.

[0015] The present utility model is further provided that the limiting port is in an L shape, and the insertion block cooperates with the limiting port.

[0016] The present utility model is further provided that the second sealing component includes a sealing groove. The sealing groove is fixedly connected to the outside of the pump body. A second sealing ring is fixedly connected to the inside of the sealing groove, and the second sealing ring is located at the bottom of the top cover.

[0017] The present utility model has the following beneficial effects:

[0018] 1. By using an internal hexagon wrench to rotate the threaded sleeve, and then under the action of the thread, the screw rod moves downward, so that the sealing cover can press down the three first sealing rings, realizing the sealing of the top of the pump body. The three first sealing rings can increase the sealing of the device, simplify the installation process at the same time, and improve the installation efficiency.

[0019] 2. In the present utility model, the movable pin of the spring bolt is inserted into the tooth gap of the ratchet gear outside the threaded sleeve, so as to limit the rotation of the threaded sleeve, and further make the top sealing of the pump body more stable.

[0020] 3. In the present utility model, the leaked gas or liquid increases the air pressure inside the top cover, causing one end of the hydraulic oil inside the S pipe to rise, thereby pushing the piston to squeeze the pressure switch to activate the alarm to send an alarm signal, reminding the staff to repair and reinforce in time to avoid accidents.

[0021] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0023] Figure 1 Schematic diagram of the installation state of the sealing device.

[0024] Figure 2 Exploded structure schematic diagram of the present utility model.

[0025] Figure 3 Cross-sectional structure schematic diagram of the present utility model.

[0026] Figure 4 For Figure 2 Enlarged structure schematic diagram at A in

[0027] Figure 5 For Figure 3 Enlarged structure schematic diagram at B in

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 100 - pump body, 101 - installation groove, 102 - limiting port, 200 - first sealing assembly, 201 - sealing cover, 202 - first sealing ring, 203 - screw rod, 300 - pressing assembly, 301 - lower pressing frame, 302 - inserting block, 303 - threaded sleeve, 400 - top cover, 500 - warning assembly, 501 - S pipe, 502 - piston, 503 - pressure switch, 504 - ventilation hole, 505 - warning device, 600 - limiting assembly, 601 - ratchet gear, 602 - spring bolt, 700 - second sealing assembly, 701 - sealing groove, 702 - second sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Example 1, please refer to Figures 1-4 , the present utility model is a top cover sealing device for an ultra-high pressure hydraulic pump, including a pump body 100, a first sealing assembly 200, a pressing assembly 300, a top cover 400 and a warning assembly 500; the first sealing assembly 200 and the pressing assembly 300 are both arranged inside the pump body 100, the top cover 400 is threadedly sleeved on the top of the pump body 100, and the warning assembly 500 is arranged on the top of the top cover 400;

[0032] An installation groove 101 is opened inside the pump body 100, and a plurality of limiting ports 102 are opened on the inner wall of the pump body 100;

[0033] The first sealing assembly 200 includes a sealing cover 201, the sealing cover 201 is movably sleeved inside the installation groove 101, a first sealing ring 202 is fixedly connected to the bottom of the sealing cover 201, and a screw rod 203 is fixedly connected inside the sealing cover 201;

[0034] The pressing assembly 300 includes a lower pressing frame 301, the lower pressing frame 301 is located on the top of the sealing cover 201, a plurality of insertion blocks 302 are fixedly connected to the outside of the lower pressing frame 301, a threaded sleeve 303 is rotatably connected inside the lower pressing frame 301, and the threaded sleeve 303 is threadedly sleeved on the outside of the screw rod 203. A limiting assembly 600 is arranged on the outside of the threaded sleeve 303, and a second sealing assembly 700 is arranged on the outside of the pump body 100. By rotating the threaded sleeve 303, the screw rod 203 can be moved downward, so that the sealing cover 201 can press down the first sealing ring 202, thereby sealing the top of the pump body 100, and the installation process is simple and fast.

[0035] Specifically, the limiting assembly 600 includes a ratchet gear 601, the ratchet gear 601 is fixedly connected to the outside of the threaded sleeve 303, a spring plug 602 is fixed inside the lower pressing frame 301, and the spring plug 602 cooperates with the ratchet gear 601. By inserting the movable pin of the spring plug 602 into the tooth gap of the ratchet gear 601, the rotation of the threaded sleeve 303 can be restricted, so that the sealing of the top of the pump body 100 can be made more stable.

[0036] Furthermore, the installation groove 101 is in a three - step shape, the number of the first sealing rings 202 is three, and the three first sealing rings 202 are respectively located at the tops of the three steps. The sealing performance of the device can be enhanced through three - stage sealing.

[0037] The limiting port 102 is in an L - shape, and the insertion block 302 is matched with the limiting port 102. The L - shaped limiting port 102 can prevent the pressing frame 301 from sliding out of the limiting port 102.

[0038] The operation process of this embodiment is as follows: When it is necessary to seal the top of the pump body 100, first place the first sealing assembly 200 inside the installation groove 101, then slide the insertion block 302 outside the pressing frame 301 along the limiting port 102, then rotate the pressing frame 301, and then use an internal hexagonal wrench to rotate the threaded sleeve 303. Subsequently, under the action of the thread, the screw rod 203 moves downward, so that the sealing cover 201 presses the first sealing ring 202, realizing the sealing of the top of the pump body 100. At the same time, the movable pin of the spring bolt 602 is inserted into the tooth gap of the ratchet gear 601 outside the threaded sleeve 303, thereby restricting the rotation of the threaded sleeve 303.

[0039] Embodiment 2, please refer to Figure 3 and Figure 5 On the basis of the specific Embodiment 1, the warning assembly 500 includes an S - tube 501. The S - tube 501 is fixedly connected to the top of the top cover 400 and is in communication with the top cover 400. A pressing switch 503 is installed at the open end of the S - tube 501. A piston 502 is movably sleeved inside the S - tube 501, and the piston 502 is located below the pressing switch 503. A warning device 505 is fixedly connected to the top of the top cover 400, and the warning device 505 is electrically connected to the pressing switch 503. By pressing the pressing switch 503 with the piston 502, the warning device 505 can be activated to emit an alarm signal, thus reminding the staff to perform timely maintenance and reinforcement to avoid accidents.

[0040] Specifically, the second sealing assembly 700 includes a sealing groove 701. The sealing groove 701 is fixedly connected to the outside of the pump body 100. A second sealing ring 702 is fixedly connected inside the sealing groove 701, and the second sealing ring 702 is located at the bottom of the top cover 400. By providing the second sealing assembly 700, the sealing performance of the connection between the top cover 400 and the pump body 100 can be enhanced, so as to ensure that the warning assembly 500 can emit an alarm signal in time when the pump body 100 leaks.

[0041] Furthermore, the inside of the S - tube 501 is filled with oil liquid, and a vent hole 504 is opened inside the S - tube 501, and the vent hole 504 is close to the end where the pressing switch 503 is installed.

[0042] The operation process of this embodiment is as follows: when the pump body 100 leaks, the air pressure in the top cover 400 increases, which can squeeze one end of the internal oil of the S pipe 501, so that the other end of the oil rises, and then the piston 502 can be pushed to squeeze the push switch 503 to activate the alarm 505 to send an alarm signal, reminding the staff to repair and reinforce in time.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A top cover sealing device for an ultra-high pressure hydraulic pump, comprising a pump body (100), a first sealing assembly (200), a pressing assembly (300), a top cover (400) and a warning assembly (500); characterized in that: The first sealing assembly (200) and the pressing assembly (300) are both arranged inside the pump body (100). The top cover (400) is threadedly sleeved on the top of the pump body (100), and the warning assembly (500) is arranged on the top of the top cover (400). An installation groove (101) is formed inside the pump body (100), and a plurality of limiting ports (102) are formed on the inner wall of the pump body (100). The warning assembly (500) includes an S-tube (501). The S-tube (501) is fixedly connected to the top of the top cover (400) and is in communication with the top cover (400). A push switch (503) is installed at the open end of the S-tube (501). A piston (502) is movably sleeved inside the S-tube (501), and the piston (502) is located below the push switch (503). A warning device (505) is fixedly connected to the top of the top cover (400), and the warning device (505) is electrically connected to the push switch (503).

2. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 1, characterized in that: The inside of the S-tube (501) is filled with hydraulic oil. A vent hole (504) is formed inside the S-tube (501), and the vent hole (504) is close to the end where the push switch (503) is installed.

3. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 1, characterized in that: The first sealing assembly (200) includes a sealing cover (201). The sealing cover (201) is movably sleeved inside the installation groove (101). A first sealing ring (202) is fixedly connected to the bottom of the sealing cover (201). A screw rod (203) is fixedly connected inside the sealing cover (201).

4. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 3, characterized in that: The installation groove (101) is in a three-step shape. The number of the first sealing rings (202) is three, and the three first sealing rings (202) are respectively located at the tops of the three steps.

5. The top cover sealing device for an ultra-high pressure hydraulic pump according to claim 1, characterized in that: The pressing assembly (300) includes a lower pressing frame (301). The lower pressing frame (301) is located on the top of the sealing cover (201). A plurality of insertion blocks (302) are fixedly connected to the outside of the lower pressing frame (301). A threaded sleeve (303) is rotatably connected inside the lower pressing frame (301), and the threaded sleeve (303) is threadedly sleeved on the outside of the screw rod (203). A limiting assembly (600) is arranged on the outside of the threaded sleeve (303), and a second sealing assembly (700) is arranged on the outside of the pump body (100).

6. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 5, characterized in that: The limiting assembly (600) includes a ratchet gear (601). The ratchet gear (601) is fixedly connected to the outside of the threaded sleeve (303). A spring latch (602) is fixed inside the lower pressing frame (301), and the spring latch (602) cooperates with the ratchet gear (601).

7. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 5, characterized in that: The limiting port (102) is in an L shape, and the insertion block (302) cooperates with the limiting port (102).

8. A top cover sealing device for an ultra-high pressure hydraulic pump according to claim 5, characterized in that: The second sealing assembly (700) includes a sealing groove (701). The sealing groove (701) is fixedly connected to the outside of the pump body (100). A second sealing ring (702) is fixedly connected inside the sealing groove (701), and the second sealing ring (702) is located at the bottom of the top cover (400).

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