Cone valve pump oil cylinder and cone valve pump

Abstract

The utility model relates to the field of pumping equipment, and provides a cone valve pump oil cylinder and a cone valve pump, which comprise a slurry sealing device, a first sensor and an alarm device, the slurry sealing device is arranged on the outer side of a piston rod of the cone valve pump oil cylinder in a sleeving mode, and the inner side wall of the slurry sealing device is in sliding sealing connection with the piston rod. A first buffer cavity is formed in the inner side wall of the slurry sealing device, and an opening of the first buffer cavity faces the piston rod; when sealing fails, the piston rod carries the slurry to enter the slurry sealing device and enter the first buffer storage cavity; the detection end of the first sensor is located in the first cache cavity, and the alarm device is in communication connection with the first sensor; when the first sensor detects that the slurry exists in the first buffer cavity, the alarm device can send out a first alarm signal to remind a worker of sealing failure of the slurry sealing device; a worker can replace or maintain the slurry sealing device in time after receiving the first alarm signal, and the situation that the piston rod brings slurry into the cone valve pump oil cylinder to pollute hydraulic oil can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pumping equipment, in particular to a cone valve pump oil cylinder and a cone valve pump. Background Art

[0002] The piston rod of the distribution cylinder of the cone valve pump is provided with a slurry sealing device and a cylinder sealing device. The slurry sealing device is used to prevent the piston cylinder slurry from entering the cylinder and contaminating the oil, and the cylinder sealing device is used to prevent hydraulic oil leakage. However, the slurry sealing device is very easy to be damaged. When the slurry sealing device is damaged and the seal fails, the piston rod is likely to bring the slurry into the cylinder and contaminate the hydraulic oil.

[0003] Therefore, how to prevent the piston rod from bringing the slurry into the cylinder body becomes a technical problem that the technicians in this field need to solve urgently. Utility Model Content

[0004] The utility model provides a cone valve pump cylinder and a cone valve pump, which are used to solve the defect in the prior art that a cleaning device is used to clean the slurry on the piston rod, causing the cleaning liquid to enter the cylinder body and contaminate the hydraulic oil, and achieve the effect of sending a first alarm signal when the seal of the slurry sealing device fails, prompting the worker to replace the slurry sealing device.

[0005] The utility model provides a cone valve pump oil cylinder, comprising:

[0006] An oil cylinder assembly, the oil cylinder assembly comprising a cylinder body and a piston rod, one end of the piston rod being slidably disposed in the cylinder body; a slurry sealing device, the slurry sealing device being disposed at one end of the cylinder body through which the piston rod passes, and the slurry sealing device being sleeved on the outer side of the piston rod of the cone valve pump oil cylinder, the slurry sealing device being slidably sealedly connected to the piston rod, the inner side wall of the slurry sealing device being provided with a first buffer cavity, the opening of the first buffer cavity facing the piston rod;

[0007] A first sensor, wherein a detection end of the first sensor is located in the first buffer cavity;

[0008] An alarm device is communicatively connected to the first sensor, and is used for sending a first alarm signal when the first sensor detects the presence of slurry in the first buffer cavity.

[0009] The cone valve pump oil cylinder provided by the utility model also includes:

[0010] A cylinder sealing device, wherein the cylinder sealing device is arranged at one end of the cylinder body through which the piston rod passes, the cylinder sealing device is sleeved on the outside of the piston rod, and the cylinder sealing device is connected to the piston rod in a sliding and sealing manner, and a second buffer cavity is arranged on the inner side wall of the cylinder sealing device, and the opening of the second buffer cavity faces the piston rod;

[0011] a second sensor, wherein a detection end of the second sensor is located in the second cache cavity;

[0012] The second sensor is in communication connection with the alarm device, and the alarm device is used for sending a second alarm signal when the second sensor detects the presence of oil in the second buffer cavity.

[0013] According to the cone valve pump oil cylinder provided by the utility model, the first buffer chamber is arranged at a position of the slurry sealing device close to the cylinder body;

[0014] The second buffer chamber is arranged at a position of the oil cylinder sealing device close to the slurry sealing device.

[0015] According to the cone valve pump oil cylinder provided by the utility model, the first cache cavity and the second cache cavity are both annular grooves.

[0016] According to the cone valve pump oil cylinder provided by the utility model, a first observation window is provided on the slurry sealing device, and the first observation window is connected to the inner and outer sides of the first buffer cavity;

[0017] The oil cylinder sealing device is provided with a second observation window, and the second observation window is connected with the inner and outer sides of the second buffer cavity.

[0018] According to the cone valve pump oil cylinder provided by the utility model, the first sensor and the second sensor are both contact sensors.

[0019] According to the cone valve pump cylinder provided by the utility model, the alarm device includes a controller and an alarm, the first sensor and the second sensor are both electrically connected to the receiving end of the controller, and the sending end of the controller is electrically connected to the alarm.

[0020] According to the cone valve pump cylinder provided by the utility model, the inner side wall of the slurry sealing device is further provided with at least two sealing grooves, the sealing grooves are distributed along the axial direction of the piston rod, and the sealing grooves are used to set sealing rings.

[0021] According to the cone valve pump oil cylinder provided by the utility model, at least one of the sealing grooves is arranged on a side of the first buffer cavity close to the cylinder body.

[0022] The utility model also provides a cone valve pump, comprising the cone valve pump oil cylinder as described above.

[0023] The cone valve pump cylinder provided by the utility model includes a slurry sealing device, a first sensor and an alarm device. The slurry sealing device is sleeved on the outer side of the piston rod of the cone valve pump cylinder, and the inner side wall of the slurry sealing device is connected to the piston rod in a sliding seal, so that during the relative sliding of the piston rod and the slurry sealing device, the slurry carried on the piston rod is blocked on one side of the slurry sealing device to prevent the slurry from passing over the slurry sealing device with the piston rod and entering the cone valve pump cylinder to contaminate the hydraulic oil. A first buffer cavity is provided on the inner side wall of the slurry sealing device, and the opening of the first buffer cavity faces the piston rod. When the sealing of the slurry sealing device fails, the piston rod carries the slurry into the slurry sealing device and finally enters the first buffer cavity of the slurry sealing device. The detection end of the first sensor is located in the first buffer cavity, and the alarm device is connected to the first sensor in communication. When the first sensor detects the presence of slurry in the first buffer cavity, the alarm device will send a first alarm signal to remind the staff that the sealing of the slurry sealing device has failed. After receiving the first alarm signal, the staff can replace or repair the slurry sealing device in time, so as to prevent the piston rod from bringing the slurry into the cone valve pump cylinder to contaminate the hydraulic oil.

[0024] Furthermore, in the cone valve pump cylinder and the cone valve pump provided in the present invention, since the cone valve pump cylinder as described above is provided, the same advantages as described above are provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0026] Figure 1 It is a cross-sectional view of a cone valve pump cylinder provided in an embodiment of the utility model.

[0027] Figure 2 It is a cross-sectional view of a slurry sealing device provided in an embodiment of the utility model.

[0028] Reference numerals:

[0029] 100: slurry sealing device; 110: first buffer chamber; 120: sealing groove; 200: first sensor; 310: controller; 320: alarm; 410: piston rod; 420: cylinder body; 500: sealing ring; 600: cylinder sealing device. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Combine the following Figure 1 and Figure 2 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0035] The embodiment of the utility model provides a cone valve pump oil cylinder, comprising an oil cylinder assembly, a slurry sealing device 100, a first sensor 200 and an alarm device.

[0036] The oil cylinder assembly includes a cylinder body 420 and a piston rod 410, one end of the piston rod 410 is slidably arranged in the cylinder body 420; the slurry sealing device 100 is arranged at one end of the cylinder body 420 for the piston rod 410 to pass through, and the slurry sealing device 100 is used to be sleeved on the outer side of the piston rod 410 of the cone valve pump oil cylinder, and the inner side wall of the slurry sealing device 100 is slidably sealed and connected with the outer side wall of the piston rod 410. In the process of relative sliding between the piston rod 410 and the slurry sealing device 100, the slurry carried on the piston rod 410 can be prevented from passing through the slurry sealing device 100 and entering the cylinder body 420 of the cone valve pump oil cylinder, thereby preventing the slurry from contaminating the hydraulic oil in the cylinder body 420.

[0037] However, the slurry sealing device 100 is a vulnerable part, and after working for a period of time, the slurry sealing device 100 may fail to seal. At this time, the slurry carried by the piston rod 410 passes through the slurry sealing device 100 and enters the cylinder 420 as the piston rod 410 moves, thereby causing the hydraulic oil in the cylinder 420 to be contaminated. The slurry sealing device 100 cannot detect when the seal fails, and when the seal fails, the slurry sealing device 100 has been working in a failed state for a long time.

[0038] Therefore, in a cone valve pump cylinder provided by the utility model, a first buffer cavity 110 is provided on the inner side wall of the slurry sealing device 100, and the opening of the first buffer cavity 110 faces the piston rod 410. When the sealing of the slurry sealing device 100 fails, the piston rod 410 will bring the slurry into the space between the slurry sealing device 100 and the piston rod 410 during the movement, and the slurry will accumulate in the first buffer cavity 110.

[0039] The detection end of the first sensor 200 is located in the first buffer cavity 110, and is used to detect whether there is slurry in the first buffer cavity 110. The alarm device is in communication connection with the first sensor 200, and when the first sensor 200 detects that there is slurry in the first buffer cavity 110, the alarm device sends a first alarm signal according to the signal transmitted by the first sensor 200.

[0040] When the staff receives the first alarm signal, they will be informed at the first time that the slurry sealing device 100 has a sealing failure problem, and the slurry sealing device 100 can be replaced in time. In this way, it can be ensured that the slurry sealing device 100 will not leak at all times, and the piston rod 410 can be prevented from bringing the slurry into the cylinder 420. Since there will be no leakage, there is no need to use a cleaning device to flush the piston rod 410.

[0041] For example, see Figure 1 The slurry sealing device 100 can be a two-stage stepped cylindrical structure. The outer side of the slurry sealing device 100 is a two-stage stepped structure. The interior of the slurry sealing device 100 is a straight hollow structure. The inner wall of the slurry sealing device 100 is gap-matched with the outer wall of the piston rod 410 of the cone valve pump cylinder.

[0042] A sliding seal is provided between the inner side wall of the slurry sealing device 100 and the piston rod 410. The sliding seal is squeezed between the slurry sealing device 100 and the piston rod 410 to prevent the piston rod 410 from carrying slurry through the slurry sealing device 100 during movement.

[0043] The purpose of setting the slurry sealing device 100 as a two-stage stepped cylindrical structure is to use a connecting sleeve to press the slurry sealing device 100 against the end of the cylinder body 420 to limit the axial movement of the slurry sealing device 100 along the piston rod 410.

[0044] In some embodiments of the utility model, the first buffer chamber 110 can be set at a position of the slurry sealing device 100 close to the cylinder body 420 of the cone valve pump cylinder. Only when the part of the slurry sealing device 100 located in the first buffer chamber 110 away from the cylinder body 420 completely fails, the slurry can enter the first buffer chamber 110. Such a setting can increase the service life of the slurry sealing device 100. If the first buffer chamber 110 is set at a position of the slurry sealing device 100 away from the cylinder body 420 of the cone valve pump cylinder, when one end of the slurry sealing device 100 away from the cylinder body 420 fails, the slurry will enter the first buffer chamber 110, which will greatly reduce the service life of the slurry sealing device 100.

[0045] In some embodiments of the present invention, the mixing cavity may be an annular groove, which penetrates the inner wall of the slurry sealing device 100 along the radial direction of the slurry sealing device 100. The cross section of the annular groove may be a rectangular or U-shaped structure.

[0046] In some embodiments of the present invention, a first observation window is further provided on the slurry sealing device 100, and the first observation window is connected to the inner and outer sides of the first buffer chamber 110. The staff can observe the amount of slurry in the first buffer chamber 110 and the increase speed of the slurry through the first observation window, so that the staff can judge whether it is necessary to immediately replace the slurry sealing device 100. If the slurry fills the entire first buffer chamber 110 or the accumulation speed of the slurry in the first buffer chamber 110 is fast, the slurry sealing device 100 needs to be replaced immediately.

[0047] In some embodiments of the present invention, the first sensor 200 may be a contact first sensor. When no slurry enters the first buffer cavity 110, the first sensor 200 is in an untriggered state. When slurry enters the first buffer cavity 110 and the slurry contacts the detection end of the first sensor 200, the first sensor 200 is triggered, and then sends a signal to the alarm device, which sends a first alarm signal after receiving the signal.

[0048] In some embodiments of the utility model, the alarm device includes a controller 310 and an alarm 320. When the first sensor 200 is triggered, it can send a high-level signal to the controller 310. After receiving the high-level signal, the controller 310 sends a high-level signal to the alarm 320, and the alarm 320 sounds an alarm.

[0049] When the first sensor 200 is not triggered, the controller 310 may not send a signal to the alarm 320 , or may continue to send a low-level signal to the alarm 320 , and the alarm 320 does not send the first alarm signal.

[0050] In some embodiments of the present invention, the inner side wall of the slurry sealing device 100 is further provided with at least two sealing grooves 120. The sealing grooves 120 may be distributed along the axial direction of the piston rod 410, and the sliding seal between the slurry sealing device 100 and the piston rod 410 is realized by the sealing ring 500, which is arranged in the sealing groove 120 and squeezed between the slurry sealing device 100 and the piston rod 410.

[0051] For example, see Figure 1 Three sealing grooves 120 are arranged on the inner wall of the slurry sealing device 100, and the three sealing grooves 120 are distributed along the axial direction of the piston rod 410, two of which are located on the left side of the first cache cavity 110, and one of which is located on the right side of the mixed storage cavity.

[0052] It is understandable that the above structure for detecting oil cylinder leakage can be arranged on the slurry sealing device 100 or on other parts of the cone valve pump oil cylinder, as long as it can achieve the corresponding detection effect.

[0053] For example, in another embodiment, the cone valve pump cylinder also includes a cylinder sealing device 600 and a second sensor; wherein, the cylinder sealing device is arranged at one end of the cylinder body 420 for the piston rod 410 to pass through, the cylinder sealing device 600 is sleeved on the outside of the piston rod 410, and the cylinder sealing device 600 is slidingly and sealingly connected to the piston rod 410, and the inner wall of the cylinder sealing device 600 is provided with a second cache cavity, and the opening of the second cache cavity faces the piston rod 410; the detection end of the second sensor is located in the second cache cavity; the second sensor is communicatively connected to the alarm device, and the alarm device is used to send a second alarm signal when the second sensor detects the presence of oil in the second cache cavity.

[0054] Specifically, the second buffer chamber is arranged at a position of the oil cylinder sealing device 600 close to the slurry sealing device 100 .

[0055] Specifically, the oil cylinder sealing device 600 is provided with a second observation window, which is connected to the inner and outer sides of the second buffer chamber. The staff can observe the amount of slurry in the second buffer chamber and the speed of increase of the slurry through the second observation window, so that the staff can judge whether it is necessary to immediately replace the slurry sealing device 100. If the slurry fills the entire second buffer chamber or the accumulation speed of the slurry in the second buffer chamber is fast, the slurry sealing device 100 needs to be replaced immediately.

[0056] The embodiment of the utility model further provides a cone valve pump, comprising the cone valve pump cylinder as described above, and thus has the same advantages as described above, which will not be described in detail herein.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A cone valve pump cylinder, characterized in that: include: An oil cylinder assembly, the oil cylinder assembly comprising a cylinder body (420) and a piston rod (410), one end of the piston rod (410) being slidably disposed in the cylinder body (420); a slurry sealing device (100), the slurry sealing device (100) being arranged at one end of the cylinder body (420) through which the piston rod (410) passes, and the slurry sealing device (100) being sleeved on the outside of the piston rod (410), the slurry sealing device (100) being connected to the piston rod (410) in a sliding and sealing manner, and the inner side wall of the slurry sealing device (100) being provided with a first buffer cavity (110), the opening of the first buffer cavity (110) facing the piston rod (410); A first sensor (200), wherein a detection end of the first sensor (200) is located in the first cache cavity (110); An alarm device is communicatively connected to the first sensor (200), and is used to send a first alarm signal when the first sensor (200) detects the presence of slurry in the first buffer chamber (110).

2. The cone valve pump cylinder according to claim 1, characterized in that: Also includes: A cylinder sealing device (600), the cylinder sealing device being arranged at one end of the cylinder body (420) through which the piston rod (410) passes, the cylinder sealing device (600) being sleeved on the outside of the piston rod (410), and the cylinder sealing device (600) being connected to the piston rod (410) in a sliding and sealing manner, and a second buffer cavity being arranged on the inner side wall of the cylinder sealing device (600), and the opening of the second buffer cavity facing the piston rod (410); a second sensor, wherein a detection end of the second sensor is located in the second cache cavity; The second sensor is in communication connection with the alarm device, and the alarm device is used for sending a second alarm signal when the second sensor detects the presence of oil in the second buffer cavity.

3. The cone valve pump cylinder according to claim 2, characterized in that: The first buffer chamber (110) is arranged at a position of the slurry sealing device (100) close to the cylinder body (420); The second buffer chamber is arranged at a position of the oil cylinder sealing device (600) close to the slurry sealing device (100).

4. The cone valve pump cylinder according to claim 2, characterized in that: The first cache cavity (110) and the second cache cavity are both annular grooves.

5. The cone valve pump cylinder according to claim 2, characterized in that: The slurry sealing device (100) is provided with a first observation window, wherein the first observation window is connected to both the inner and outer sides of the first buffer cavity (110); The oil cylinder sealing device (600) is provided with a second observation window, and the second observation window is connected to the inner and outer sides of the second buffer cavity.

6. The cone valve pump cylinder according to claim 2, characterized in that: The first sensor (200) and the second sensor are both contact sensors.

7. The cone valve pump cylinder according to claim 2, characterized in that: The alarm device comprises a controller (310) and an alarm (320), the first sensor (200) and the second sensor are both electrically connected to a receiving end of the controller (310), and the sending end of the controller is electrically connected to the alarm (320).

8. The cone valve pump cylinder according to claim 1, characterized in that: The inner side wall of the slurry sealing device (100) is also provided with at least two sealing grooves (120), the sealing grooves (120) are distributed along the axial direction of the piston rod (410), and the sealing rings (500) are used to be arranged in the sealing grooves (120).

9. The cone valve pump cylinder according to claim 8, characterized in that: At least one of the sealing grooves (120) is arranged on a side of the first buffer cavity (110) close to the cylinder body (420).

10. A cone valve pump, characterized in that: It comprises a cone valve pump cylinder as claimed in any one of claims 1 to 9.

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