Wear-resistant pressure transmitter for slurry

Abstract

The utility model relates to the technical field of pressure transmitters, and particularly discloses a wear-resistant pressure transmitter for slurry, which comprises an instrument head and a connecting seat, a gland is arranged on the front surface of the instrument head, protective glass is arranged in the center of the gland, a hinge seat is arranged at the upper end of the gland, the hinge seat is fixedly connected with the gland, and a positioning plate is arranged at the upper end of the instrument head. The positioning plate is detachably connected with the instrument head, the positioning plate is rotationally connected with the hinge seat through a pivot, a sealing ring structure is arranged on the side, facing the instrument head, of the gland, and a lock catch structure used for locking the gland on the front face of the instrument head is arranged on the outer side of the instrument head. The gland is arranged on the front face of the instrument head, a display screen on the instrument head can be protected through the protective glass, the gland can be freely opened from the front face of the instrument head, operation of the instrument head is facilitated, only the gland needs to be replaced independently when the gland and the protective glass are damaged and difficult to use normally, and the transmitter is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a wear-resistant pressure transmitter used for mud. Background Art

[0002] As is known, the pressure measurement of general liquids and gases usually uses a pressure transmitter with a pressure inlet hole for pressure measurement. When used for pressure detection of measuring media such as pulp and mud, the pressure inlet hole is easily blocked by the measuring medium and the pressure of the fluid cannot be accurately measured. Therefore, a cavity-free pressure transmitter is usually used to detect the pressure of the mud-like solid-liquid mixed measuring medium. At present, the measuring front end of this cavity-free pressure transmitter is an elastic body, which generates micro-strain after being subjected to pressure, and then converts the pressure into an electrical signal through a strain gauge, a wiring board and an amplifying circuit board, and finally transmits the signal through an electrical connection device.

[0003] The pressure transmitter is equipped with a display instrument on the top, which is used to display operating data and may also integrate operation buttons for on-site operation. However, since the pipe systems equipped with pressure transmitters are often arranged in harsh working conditions for continuous operation, the exposed display screen and control interface of the transmitter are extremely vulnerable to environmental challenges, especially humidity, water vapor and corrosive substances, which can cause screen blur or even damage. Utility Model Content

[0004] In view of the above problems, the utility model proposes a wear-resistant pressure transmitter for mud to solve the shortcomings of existing transmitters, in which water is mostly concentrated in one place and they are mostly arranged to operate continuously in harsh working conditions, resulting in the exposed display screen and control interface of the transmitter being extremely vulnerable to environmental challenges, especially the invasion of humidity, water vapor and corrosive substances.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a wear-resistant pressure transmitter for mud, comprising an instrument head and a connecting seat, the instrument head is fixed to the upper end of the connecting seat, a pressure cover is provided on the front of the instrument head, the pressure cover is matched with the instrument head, and a protective glass is provided in the center of the pressure cover;

[0006] A hinged seat is provided at the upper end of the gland, the hinged seat is fixedly connected to the gland, a positioning plate is provided at the upper end of the instrument head, the positioning plate is detachably connected to the instrument head, and the positioning plate is rotatably connected to the hinged seat through a pivot;

[0007] A sealing ring structure is provided on the side of the gland facing the instrument head, and a locking structure for locking the gland on the front side of the instrument head is provided on the outer side of the instrument head.

[0008] A further improvement is that the locking structure includes a hook and an elastic hanging ring, the hook is fixedly connected to both sides of the instrument head, the elastic hanging ring is rotatably connected to both sides of the pressure cover through a movable pin, and a hook groove is provided on the side of the hook away from the elastic hanging ring, and the hook groove is buckled with the elastic hanging ring.

[0009] A further improvement is that the sealing ring structure includes a rubber ring, which is fixedly connected to the side of the pressure cover facing the instrument head, the rubber ring surrounds the protective glass, and an annular groove is opened on the front of the instrument head, and the rubber ring is engaged with the annular groove.

[0010] A further improvement is that a groove is provided at the upper end of the instrument head, a positioning plate is inserted into the groove, a fixing bolt is mounted at the upper end of the positioning plate, the fixing bolt passes through the positioning plate and is threadedly connected to the positioning hole provided in the groove.

[0011] A further improvement is that a C-shaped pressure plate is provided above the groove, both ends of the C-shaped pressure plate are fixedly connected to the upper end of the instrument head, and the lower end surface of the C-shaped pressure plate contacts the upper end surface of the hinge seat inserted into the positioning plate.

[0012] A further improvement is that a rubber clamp is provided at one end of the gland away from the hinge seat, the rubber clamp is fixedly connected to the side of the gland facing the instrument head, and the side of the rubber clamp away from the gland is buckled with a spherical clamping groove opened on the front of the instrument head.

[0013] The beneficial effects of the utility model are:

[0014] The fixing seat is detachably mounted on the upper end of the concrete box by means of a clamping tool, so that the staff can replace the concrete box easily, which is convenient and practical.

[0015] The spray assembly on the jacket is located inside the concrete box. When adding water, it can increase the spraying range of the water flow by swinging, thereby enhancing the mixing effect of the concrete raw materials and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural diagram of the utility model when the pressure cover and the instrument head are matched.

[0018] Figure 2 It is a structural diagram of the utility model when the pressure cover is opened.

[0019] Figure 3 It is a structural diagram of the positioning plate in the utility model.

[0020] Figure 4 It is a structural diagram of the instrument head in the utility model.

[0021] Among them: 1. Connecting seat; 2. Instrument head; 3. Pressure cover; 4. Protective glass; 5. Articulated seat; 6. Positioning plate; 7. Rubber ring; 8. Annular groove; 9. Elastic hanging ring; 10. Hook; 11. Hook groove; 12. Fixing bolt; 13. Rubber clamp; 14. Spherical slot; 15. Groove; 16. Positioning hole; 17. C-type pressure plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] according to Figure 1 , 2 As shown in Figures 3 and 4, a wear-resistant pressure transmitter for mud is proposed in this embodiment, including an instrument head 2 and a connecting seat 1. The instrument head 2 is fixed at the upper end of the connecting seat 1. A pressure cover 3 is provided on the front of the instrument head 2. The pressure cover 3 is matched with the instrument head 2, and a protective glass 4 is provided in the center of the pressure cover 3. The pressure cover 3 is arranged on the front of the instrument head 2, and the display screen on the instrument head 2 can be protected by the protective glass 4 to prevent the display screen of the instrument head 2 from being affected by corrosive substances and dust.

[0024] An articulated seat 5 is provided at the upper end of the pressure cover 3, and the articulated seat 5 is fixedly connected to the pressure cover 3. A positioning plate 6 is provided at the upper end of the instrument head 2, and the positioning plate 6 is detachably connected to the instrument head 2. The positioning plate 6 is rotatably connected to the articulated seat 5 through a pivot.

[0025] A sealing ring structure is provided on one side of the pressure cover 3 facing the instrument head 2 , and a locking structure for locking the pressure cover 3 on the front side of the instrument head 2 is provided on the outer side of the instrument head 2 .

[0026] After releasing the fixation of the pressure cover 3 through the locking structure, the pressure cover 3 can be opened from the front of the instrument head 2 to operate the instrument head 2. Since the positioning plate 6 on the top of the pressure cover 3 is fixed to the instrument head 2 by a detachable connection, when the pressure cover 3 and the protective glass 4 are damaged and difficult to use normally, only the pressure cover 3 needs to be replaced separately, and the transmitter is easy to maintain.

[0027] For the specific structure of the locking mechanism, please refer to the following description.

[0028] The locking structure includes a hook 10 and an elastic hanging ring 9. The hook 10 is fixedly connected to both sides of the instrument head 2. The elastic hanging ring 9 is rotatably connected to both sides of the pressure cover 3 through a movable pin. A hook groove 11 is provided on the side of the hook 10 away from the elastic hanging ring 9, and the hook groove 11 is buckled with the elastic hanging ring 9.

[0029] The steps to use are as follows:

[0030] After the gland 3 is aligned with the instrument head 2, the hooks 10 on both sides of the instrument head 2 and the elastic rings 9 on both sides of the gland 3 are at the same height. At this time, the elastic rings 9 are rotated and moved from the front of the hook 10 to the back of the hook 10. The hook groove 11 on the back of the hook 10 will hook the elastic ring 9, so that the gland 3 maintains a tight assembly state with the instrument head 2.

[0031] For the specific structure of the sealing ring structure, please refer to the following description.

[0032] The sealing ring structure includes a rubber ring 7, which is fixedly connected to the side of the pressure cover 3 facing the instrument head 2, and the rubber ring 7 surrounds the protective glass 4. An annular groove 8 is provided on the front of the instrument head 2, and the rubber ring 7 is engaged with the annular groove 8.

[0033] When the gland 3 and the instrument head 2 are aligned, the rubber ring 7 on the gland 3 will be stuck in the annular groove 8 on the instrument head 2. The rubber ring 7 is filled between the gland 3 and the instrument head 2, which can prevent water vapor from entering the protective glass 4 through the gap between the instrument head 2 and the gland 3, and provide a buffer for the instrument head 2 and the gland 3. When the gland 3 is impacted from the front, the rubber ring 7 will shrink to absorb the impact force transmitted by the gland 3, so as to protect the instrument head 2 and the gland 3.

[0034] The detachable connection between the instrument head 2 and the positioning plate 6 is further described below.

[0035] As an example, a groove 15 is provided at the upper end of the instrument head 2 , and the positioning plate 6 is inserted into the groove 15 . A fixing bolt 12 is installed at the upper end of the positioning plate 6 . The fixing bolt 12 passes through the positioning plate 6 and is threadedly connected to a positioning hole 16 provided in the groove 15 .

[0036] When the pressure cover 3 and the protective glass 4 on the pressure cover 3 are damaged, there is no need to replace the entire instrument head 2. Since the positioning plate 6 is fixed to the instrument head 2 in a detachable connection manner, when the pressure cover 3 and the protective glass 4 are removed, the fixing bolt 12 on the positioning plate 6 can be unscrewed from the positioning hole 16 in the groove 15.

[0037] Further improvements are made based on the previous implementation plan:

[0038] A C-shaped pressing plate 17 is provided above the groove 15 , and both ends of the C-shaped pressing plate 17 are fixedly connected to the upper end of the instrument head 2 , and the lower end surface of the C-shaped pressing plate 17 contacts the upper end surface of the hinge seat 5 inserted into the positioning plate 6 .

[0039] The advantage of setting a C-shaped pressure plate 17 is that during assembly, the positioning plate 6 is inserted and stuck in the C-shaped pressure plate 17 and the groove 15. The C-shaped pressure plate 17 limits the positioning plate 6 from the upper end of the positioning plate 6, and the instrument head 2 limits the positioning plate 6 from the lower end of the positioning plate 6. In this way, even if the positioning plate 6 is impacted from bottom to top, under the protection of the C-shaped pressure plate 17, the positioning plate 6 can maintain a stable connection with the instrument head 2.

[0040] In a better embodiment, a rubber clamp 13 is provided at one end of the gland 3 away from the hinge seat 5. The rubber clamp 13 is fixedly connected to the side of the gland 3 facing the instrument head 2. The side of the rubber clamp 13 away from the gland 3 is snap-fitted with a spherical clamping groove 14 provided on the front of the instrument head 2. When the gland 3 is aligned with the instrument head 2, in addition to the rubber ring 7 on the gland 3 being snapped into the annular groove 8 on the instrument head 2 to limit the gland 3, the rubber clamp 13 on the gland 3 is also snapped into the spherical clamping groove 14 on the front of the instrument head 2. The rubber clamp 13 cooperates with the spherical clamping groove 14 to further keep the gland 3 and the instrument head 2 in a fitted state, thereby preventing the gland 3 from shaking after closing.

[0041] How this application works:

[0042] The pressure cover 3 is arranged on the front of the instrument head 2, and can protect the display screen on the instrument head 2 through the protective glass 4 to prevent the display screen of the instrument head 2 from being affected by corrosive substances and dust. After the pressure cover 3 is released by the lock structure, the pressure cover 3 can be opened from the front of the instrument head 2 to operate the instrument head 2. Since the rubber ring 7 on the top of the pressure cover 3 is fixed to the instrument head 2 by a detachable connection, when the pressure cover 3 and the protective glass 4 are damaged and difficult to use normally, only the pressure cover 3 needs to be replaced separately, and the transmitter is easy to maintain.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0044] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A wear-resistant pressure transmitter for mud, comprising an instrument head (2) and a connecting seat (1), wherein the instrument head (2) is fixed to the upper end of the connecting seat (1), characterized in that: The front of the instrument head (2) is provided with a pressure cover (3), the pressure cover (3) is matched with the instrument head (2), and a protective glass (4) is provided in the center of the pressure cover (3); The upper end of the pressure cover (3) is provided with a hinge seat (5), the hinge seat (5) is fixedly connected to the pressure cover (3), the upper end of the instrument head (2) is provided with a positioning plate (6), the positioning plate (6) is detachably connected to the instrument head (2), and the positioning plate (6) is rotatably connected to the hinge seat (5) via a pivot; A sealing ring structure is provided on the side of the pressure cover (3) facing the instrument head (2), and a locking structure for locking the pressure cover (3) on the front side of the instrument head (2) is provided on the outside of the instrument head (2).

2. The wear-resistant pressure transmitter for mud according to claim 1, characterized in that: The locking structure comprises a hook (10) and an elastic hanging ring (9), wherein the hook (10) is fixedly connected to both sides of the instrument head (2), and the elastic hanging ring (9) is rotatably connected to both sides of the pressure cover (3) via a movable pin, and a hook groove (11) is provided on the side of the hook (10) away from the elastic hanging ring (9), and the hook groove (11) is buckled with the elastic hanging ring (9).

3. The wear-resistant pressure transmitter for mud according to claim 1, characterized in that: The sealing ring structure comprises a rubber ring (7), the rubber ring (7) being fixedly connected to a side of the pressure cover (3) facing the instrument head (2), the rubber ring (7) surrounding the protective glass (4), an annular groove (8) being provided on the front of the instrument head (2), and the rubber ring (7) being engaged with the annular groove (8).

4. The wear-resistant pressure transmitter for mud according to claim 1, characterized in that: The upper end of the instrument head (2) is provided with a groove (15), the positioning plate (6) is inserted into the groove (15), the upper end of the positioning plate (6) is equipped with a fixing bolt (12), the fixing bolt (12) passes through the positioning plate (6) and is threadedly connected with a positioning hole (16) provided in the groove (15).

5. The wear-resistant pressure transmitter for mud according to claim 4, characterized in that: A C-shaped pressure plate (17) is provided above the groove (15), and both ends of the C-shaped pressure plate (17) are fixedly connected to the upper end of the instrument head (2), and the lower end surface of the C-shaped pressure plate (17) contacts the upper end surface of the hinge seat (5) inserted into the positioning plate (6).

6. The wear-resistant pressure transmitter for mud according to claim 1, characterized in that: A rubber clamp (13) is provided at one end of the pressure cover (3) away from the hinge seat (5); the rubber clamp (13) is fixedly connected to a side of the pressure cover (3) facing the instrument head (2); and the side of the rubber clamp (13) away from the pressure cover (3) is snap-fitted with a spherical clamping groove (14) provided on the front of the instrument head (2).

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