A sanitary weighing sensor assembly

Abstract

The invention discloses a sanitary weighing sensor assembly, including a pressure head, a rubber sheath, a pressing plate, an elastomer, an O-type sealing ring and a locking wire nut assembly; the rubber sheath is wrapped around the outside of the pressure head, the lower end surface of the rubber sheath extends out of the lower end surface of the pressure head, the pressure head is arranged on the upper part of the elastomer, and the pressure head and the elastomer are sealed and connected through the rubber sheath; the pressing plate is arranged between the mounting surfaces of the pressure head and the elastomer, and is fixed to the pressing plate by a second bolt passing through the elastomer, and the bolt head is sealed by a second sealant; the O-type sealing ring is arranged on the lower end surface of the elastomer; a cavity is arranged in the elastomer, a strain gauge is arranged in the cavity, and the locking wire nut assembly is arranged on the side of the elastomer. The protectiveness of the sensor is improved, the sealing effect is improved, and the invasion of bacteria and water is avoided.

Description

Technical Field

[0001] The invention belongs to the field of weighing sensors and relates to a sanitary weighing sensor component. Background Art

[0002] In the food, pharmaceutical, medical and other hygienic industries, the hygienic functions and requirements of production equipment are very high. As an important component of the weighing measurement system, weighing sensors used in the above fields are also given very high requirements. According to the directives of EHEDG, NSF, FDA, GMP, HACCP and other national organizations, the structural design of products in the hygienic industry, including sensors, must comply with certain specifications to meet relevant hygienic requirements.

[0003] When designing sanitary sensors, the requirements of relevant standard directives should be fully considered, such as the structure should be seamless, dead angle-free, easy to clean, non-toxic, non-absorbent, non-releasing, etc. The selection of materials should meet medical and food grade requirements, and adhesives should be avoided as much as possible when the structure allows, so as to reduce the risk of other substances being introduced into the sensor during use. At the same time, it is also necessary to consider that the weighing sensor, as a measuring element, should have a certain ability to resist eccentric loads.

[0004] However, existing sanitary sensors are often not adequately protected and have poor sealing effects, which can easily allow bacteria or water to intrude into the sensor, causing sensor contamination and failing to meet sanitary requirements. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a sanitary weighing sensor assembly to improve the protection of the sensor, improve the sealing effect, and avoid the intrusion of bacteria and water.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A sanitary weighing sensor assembly comprises a pressure head, a rubber sheath, a pressure plate, an elastomer, an O-type sealing ring and a locking wire nut assembly;

[0008] The rubber sheath is wrapped around the outside of the pressure head, the lower end surface of the rubber sheath extends out of the lower end surface of the pressure head, the pressure head is arranged on the upper part of the elastic body, and the pressure head and the elastic body are sealed and connected through the rubber sheath; the pressing plate is arranged between the mounting surfaces of the pressure head and the elastic body, the pressing plate is located inside the rubber sheath, the pressing plate is fixed to the rubber sheath, and a second bolt is used to pass through the elastic body and fix the pressing plate, the bolt head is located in the pressing plate, and is sealed with a second sealant; an O-ring is arranged on the lower end surface of the elastic body;

[0009] A cavity is arranged in the elastic body, a strain gauge is arranged in the cavity, and a locking wire nut assembly is arranged on the side of the elastic body.

[0010] Preferably, the elastomer is a circular plate structure with a protruding ball head arranged in the middle of the upper end surface, the pressure head is a cylindrical structure with a spherical inner cavity arranged in the middle of the lower end surface, and the diameter of the spherical inner cavity is larger than the diameter of the protruding ball head arranged in the middle of the upper end surface of the elastomer.

[0011] Preferably, an inwardly contracted step is provided at the intersection of the lower end surface and the side surface, and an O-ring is provided in the step.

[0012] Preferably, an inward step is provided at the intersection of the upper end surface of the elastomer and the side surface, and an inward step is provided at the intersection of the upper end surface of the pressure head and the side surface; the rubber sheath is a tubular structure that is small at the top and large at the bottom, and the lower end surface and the side surface are L-shaped, and the short side of the L-shape is embedded in the inward step provided at the intersection of the upper end surface and the side surface of the elastomer, and the lower end surface of the pressure plate fits into the upper end surface of the L-shaped short side; the upper end surface of the rubber sheath and the side surface are Γ-shaped, and the short side of the Γ-shaped is embedded in the inward step provided at the intersection of the upper end surface and the side surface of the pressure head.

[0013] Furthermore, the thickness of the L-shaped short side is greater than the height of the inward step set at the intersection of the upper end surface and the side surface of the elastic body, and the thickness of the Γ-shaped short side is greater than the height of the inward step set at the intersection of the upper end surface and the side surface of the pressure head.

[0014] Furthermore, the top surface of the Γ-shaped short side is a slope that is higher on the outside and lower on the inside.

[0015] Preferably, an inward-retracted plane is provided on the side of the lower elastic body, and the extension length of the inward-retracted plane upward and downward along the axial direction of the elastic body does not exceed the inward-retracted steps provided on the upper end surface and the lower end surface of the elastic body; a threaded hole perpendicular to the inward-retracted plane is provided on the outer side of the elastic body, and the wire locking nut assembly is threadedly matched with the threaded hole.

[0016] Preferably, the pressure head is axially provided with a through threaded hole, the space between the pressure head, the elastomer and the rubber sheath is filled with silicone through the through threaded hole, the threaded hole is blocked with a first bolt, and a second sealant is poured into the threaded hole.

[0017] Preferably, the locking wire nut assembly includes a first sealing ring, a clamping ring, a stud, a second sealing ring, a locking wire nut and a third sealing ring; the first sealing ring is a tubular structure, and the clamping ring is a flat washer structure; the stud is an external thread and has an internal hole, and its external thread cooperates with the external thread of the elastomer, and the second sealing ring has a trapezoidal cross-section and an internal hole; the locking wire nut is a U-shaped structure, with a thread arranged inside, and its internal thread cooperates with the external thread of the stud, and the bottom of the U-shaped structure has a hole; the first sealing ring, the clamping ring, and the stud are arranged in sequence from the inside to the outside of the side of the elastomer, the locking wire nut is connected to the stud part by a thread, and the second sealing ring is arranged inside the locking wire nut, between the stud and the bottom of the internal thread of the locking wire nut; the sealing ring is arranged between the inward-retracted plane on the outside of the elastomer and the end face of the U-shaped structure of the locking wire nut.

[0018] 10. The sanitary weighing sensor assembly according to claim 9 is characterized in that a sealing groove is provided on the end face of the U-shaped structure of the wire locking nut, and the third sealing ring is a convex structure with an internal opening; the convex small end face of the third sealing ring is embedded in the sealing groove of the end face of the U-shaped structure of the wire locking nut.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention wraps the pressure head and the pressure plate with a rubber sheath, the pressure head and the elastomer are sealed and connected through the rubber sheath, and bolts are passed through the elastomer and fixed to the pressure plate, the bolt heads are located in the pressure plate, and sealant is used for sealing, so that the sensor components can be connected and sealed in all directions. Through the rubber sheath sealing and the sealant sealing, the sensor can be seamless and dead angle-free in structure, avoiding the invasion of bacteria and water, especially during cleaning, the outer surface of the sensor can be fully sealed, meeting the design requirements of sanitary sensors.

[0021] Furthermore, the L-shaped structure and the Γ-shaped structure of the rubber sheath can cooperate with the inwardly contracted steps on the upper end surface of the elastic body and the upper end surface of the pressure head to ensure the sealing effect.

[0022] Furthermore, the L-shaped short side and the Γ-shaped short side are both greater than the height of the retracted step, so that when the component is installed, the L-shaped short side and the Γ-shaped short side can be compressed so that the component fits perfectly with the L-shaped short side and the Γ-shaped short side to ensure the sealing effect.

[0023] Furthermore, the gaps between components in the sensor are filled with silica gel, which can prevent moisture from accumulating in the cavity. After the silica gel is filled, the hole is blocked by a first bolt, and a first sealant is poured into the hole to completely seal the threaded hole and ensure a sealing effect.

[0024] Furthermore, the wire locking nut assembly as a whole has no exposed edges or gaps, thus achieving complete sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the sensor according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the assembly of the pressure head and the rubber sheath according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the cooperation between the upper end surface of the rubber sheath and the pressure head according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the cooperation between the rubber sheath and the elastic body according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of a wire locking nut assembly according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the installation of the sensor according to the embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of sensor cleaning according to an embodiment of the present invention.

[0032] Among them: 1-pressure head; 2-rubber sheath; 2a-L-shaped short side; 2b-Γ-shaped short side; 3-pressure plate; 4-elastomer; 5-O-type sealing ring; 6-first sealant; 7-first bolt; 8-silicone; 9-locking wire nut assembly; 9a-first sealing ring; 9b-clamping ring; 9c-stud; 9d-second sealing ring; 9e-locking wire nut; 9f-third sealing ring; 10-second bolt; 11-second sealant; 12-customer upper mounting plate; 13-customer lower mounting plate. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0034] like Figure 1 As shown, the weighing sensor assembly suitable for food, medicine, and medical and sanitary use described in the present invention includes a pressure head 1, a rubber sheath 2, a pressure plate 3, an elastomer 4, a sealing ring 5, sealants 6 and 11, locking bolts 7 and 10, silicone 8, and a locking wire nut assembly 9.

[0035] The pressure head 1, the pressure plate 3 and the elastic body 4 are all made of stainless steel, and the sealing ring 5 is an O-ring.

[0036] The elastic body 4 is a circular plate structure, with a cavity provided inside the elastic body 4, and an opening provided in the cavity at the lower end face of the elastic body 4, and an inward step provided at the intersection of the lower end face and the side face, and the sealing ring 5 is installed in the inward step. An inward step is provided at the intersection of the upper end face and the side face of the elastic body 4, a protruding ball head is provided in the middle of the upper end face, and an inward plane is provided on the side face, and the upward and downward extension length of the inward plane along the axis direction of the elastic body 4 does not exceed the inward step provided on the upper end face and the lower end face of the elastic body 4, and a threaded hole perpendicular to the threaded hole is provided on the inward plane. The lower end face of the elastic body 4 is provided with mounting threaded holes perpendicular to the lower end face and evenly distributed.

[0037] The upper end surface of the cavity is provided with inverted cone-shaped blind holes, the number of which is four and evenly distributed along the circumference of the cavity, and strain gauges are arranged in the blind holes.

[0038] like Figure 2As shown, the pressure head 1 is a cylindrical structure, and a spherical inner cavity is set in the middle of the lower end surface, and the diameter of the spherical inner cavity is larger than the diameter of the protruding ball head set in the middle of the upper end surface of the elastic body 4. The spherical inner cavity cooperates with the protruding ball head of the elastic body 4, and an inward step is set at the intersection of the upper end surface and the side surface. The upper end surface is provided with mounting threaded holes that are perpendicular to the upper end surface and evenly distributed, and the upper end surface is also provided with at least two threaded holes for filling with silicone.

[0039] The rubber sheath 2 is a tubular structure with a small top and a large bottom, and the lower end face and the side face are arranged in an L shape, and the thickness of the short side of the L-shaped structure is greater than the height of the retracted step arranged at the intersection of the upper end face and the side face of the elastic body 4; Figure 3 As shown, the upper end surface is arranged in a Γ shape, and the thickness of the short side of the Γ-shaped structure is greater than the height of the retracted step arranged at the intersection of the upper end surface and the side surface of the pressure head 1.

[0040] During manufacturing, after the rubber sheath 2 and the pressure head 1 are manufactured, they are bonded together by an adhesive to form a pressure head assembly. After the elastic body 4 is manufactured into a sensor, the pressure head assembly is installed on the upper end of the elastic body 4, the L-shaped short side 2a is embedded in the retracted step provided at the intersection of the upper end face and the side face of the elastic body 4, and the Γ-shaped short side 2b is embedded in the retracted step provided at the intersection of the upper end face and the side face of the pressure head 1, and the spherical inner cavity of the pressure head 1 is matched with the ball head of the elastic body 4. This structure can ensure that the sensor allows a certain deflection angle of the load, thereby improving the sensor's ability to resist off-center loads.

[0041] The top surface of the Γ-shaped short side 2b is a slope that is higher outside and lower inside.

[0042] The pressure plate 3 is an annular structure with a circle of evenly distributed threaded holes. The pressure plate 3 is located inside the rubber sheath 2, pressed on the lower end face of the rubber sheath 2 and above the short side of the side L-shaped structure, and fixed to the upper end face of the elastomer 4 by the second bolt 10. After the second bolt 10 is fixed, the second sealant 11 is poured into the bolt hole to achieve the sealing of the bolt hole. Since the thickness of the lower end face of the rubber sheath 2 and the short side of the side L-shaped structure is greater than the height of the retracted step set at the intersection of the upper end face of the elastomer 4 and the side, a reliable seal can be achieved between the rubber sheath 2 and the elastomer 4.

[0043] like Figure 4 As shown, after the pressure head assembly and the elastic body 4 are assembled, the silica gel 8 is filled into the cavity between the pressure head 1, the rubber sheath 2 and the elastic body 4 through the threaded hole for filling silica gel 8 reserved on the upper end surface of the pressure head 1, so as to prevent water vapor from accumulating in the cavity. After the silica gel 8 is filled, the hole is blocked by the first bolt 7, and the first sealant 6 is poured into the hole to completely seal the glue filling hole.

[0044] like Figure 5As shown, the locking nut assembly 9 includes a first sealing ring 9a, a clamping ring 9b, a stud 9c, a second sealing ring 9d, a locking nut 9e and a third sealing ring 9f. The first sealing ring 9a is a tubular structure, the clamping ring 9b is a flat washer structure, the stud 9c is an external thread and has an internal hole, and a threaded hole is provided on the side of the elastomer 4, and the external thread of the stud 9c cooperates with the internal thread of the threaded hole. The second sealing ring 9d has a trapezoidal cross section and an internal hole, and the locking nut 9e is a U-shaped structure with a thread provided inside, and its internal thread cooperates with the external thread of the stud 9c, and the bottom of the U-shaped structure has a hole. On the outer retracted plane of the elastomer 4, in the direction of the axis of the threaded hole perpendicular to the retracted plane, the first sealing ring 9a, the clamping ring 9b, and the stud 9c are sequentially arranged from the bottom of the threaded hole to the outside, and the locking nut 9e is partially connected to the stud 9c through a thread, and the second sealing ring 9d is arranged inside the locking nut 9e, and is located between the stud 9c and the bottom of the internal thread of the locking nut 9e. The third sealing ring 9f is arranged between the outer inwardly contracted plane of the elastic body 4 and the end face of the U-shaped structure of the locking wire nut 9e. The end face of the U-shaped structure of the locking wire nut 9e is provided with an annular sealing groove, and the third sealing ring 9f is a convex structure with an internal opening. The convex small end face of the third sealing ring 9f is embedded in the annular sealing groove of the end face of the U-shaped structure of the locking wire nut 9e.

[0045] The locking wire nut assembly is provided with a first sealing ring 9a, a clamping ring 9b, a stud 9c, and a second sealing ring 9d in sequence from the bottom of the threaded hole of the elastic body 4 to the outside. A part of the thread of the stud 9c is arranged inside the threaded hole of the elastic body 4, and another part of the thread is arranged outside the threaded hole of the elastic body 4. The inner thread of the locking wire nut 9e is matched with another part of the thread of the stud 9c arranged outside the threaded hole of the elastic body 4. The second sealing ring 9d is located between the bending part of the U-shaped structure of the locking wire nut 9e and the end face of the stud 9c, and the third sealing ring 9f is arranged at one end of the locking wire nut 9e facing the first sealing ring 9a.

[0046] like Figure 3 As shown, an annular sealing groove is provided on the upper end surface of the U-shaped structure of the wire locking nut 9e, and the height of the outer annular surface of the annular sealing groove away from the axis of the wire locking nut 9e from the bottom of the U-shape is less than the height of the inner annular surface of the annular sealing groove close to the axis of the wire locking nut 9e from the bottom of the U-shape. That is, the height of the inner annular surface of the annular sealing groove close to the axis of the wire locking nut 9e is greater than the height of the outer annular surface away from the axis.

[0047] When locking, the inner ring surface of the annular sealing groove arranged on the upper end surface of the U-shaped structure of the wire locking nut 9e, which is close to the axis of the wire locking nut 9e, is in close contact with the outer side of the elastic body 4.

[0048] The end of the third sealing ring 9f facing the first sealing ring 9a is a large end face, and the end facing the locking nut 9e is a small end face. The large end face of the third sealing ring 9f is in close contact with the outer plane of the elastomer 4, and the small end face of the third sealing ring 9f with a convex structure is embedded in the annular sealing groove set on the upper end face of the U-shaped structure of the locking nut 9e.

[0049] The thickness of the large end surface of the third sealing ring 9f is greater than the distance between the inner and outer annular surfaces of the annular sealing groove provided on the upper end surface of the locking wire nut 9e.

[0050] The outer diameter of the larger end surface of the third sealing ring 9f is consistent with the outer diameter of the upper end surface of the locking nut 9e, and the upper end surface of the locking nut 9e is an end surface facing the first sealing ring 9a.

[0051] The second sealing ring 9d has one end facing the first sealing ring 9a as a large end face, and the other end as a small end face. The large end face of the second sealing ring 9d is in close contact with the end face of the other part of the stud 9c set outside the threaded hole of the elastomer 4. The outer diameter of the small end face of the second sealing ring 9d is smaller than the through hole set at the bottom of the locking nut 9e. The outer diameter of the large end face of the second sealing ring 9d is larger than the inner diameter of the through hole at the bottom of the locking nut 9e, and the inner wall of the through hole is located in the connecting area between the large end face and the small end face.

[0052] The connecting area between the large end face and the small end face of the second sealing ring 9d is an inclined surface, and the inclined surface is inclined toward the first sealing ring 9a.

[0053] One end of the first sealing ring 9a facing the clamping ring 9b is an inclined surface. The inner ring of the first sealing ring 9a is closer to the clamping ring 9b than the outer ring. The inner diameter of the circular gasket structure clamping ring 9b is between the outer diameter and the inner diameter of the circular tubular structure first sealing ring 9a.

[0054] The first sealing ring 9a, the second sealing ring 9d and the third sealing ring 9f are all made of rubber.

[0055] The inner diameters of the first sealing ring 9a, the stud 9c and the second sealing ring 9d are all equal to the outer diameter of the wire.

[0056] In the wire locking nut assembly, the first sealing ring 9a, the clamping ring 9b and the stud 9c cooperate to lock the wire, and the second sealing ring 9d, the wire locking nut 9e and the third sealing ring 9f cooperate to seal.

[0057] like Figure 6 As shown, during installation, since the thickness of the short side of the Γ-shaped structure on the upper end face of the rubber sheath 2 is greater than the height of the indented step at the intersection of the upper end face and the side face of the pressure head 1, the upper mounting plate 12 is bolted to the upper end face of the pressure head 1. After the upper mounting plate 12 is installed, a reliable seal can be achieved on the upper end face of the upper pressure head. A sealing ring 5 is installed in the indented step at the intersection of the lower end face and the side face of the elastomer 4. The lower mounting plate 13 is bolted to the lower end face of the elastomer 4. After the lower mounting plate 13 is installed, a reliable seal can be achieved on the lower end face of the sensor. Therefore, the sensor can be seamless and dead angle-free in structure, especially when cleaning, such as Figure 7 As shown, the outer surface of the sensor can be fully sealed, meeting the design requirements of sanitary sensors.

[0058] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A sanitary weighing sensor assembly, characterized in that: It comprises a pressure head (1), a rubber sheath (2), a pressure plate (3), an elastic body (4), a sealing ring (5) and a locking wire nut assembly (9); The rubber sheath (2) is wrapped around the outside of the pressure head (1), the lower end surface of the rubber sheath (2) extends out of the lower end surface of the pressure head (1), the pressure head (1) is arranged on the upper part of the elastic body (4), and the pressure head (1) and the elastic body (4) are sealed and connected through the rubber sheath (2); the pressure plate (3) is arranged between the mounting surfaces of the pressure head (1) and the elastic body (4), the pressure plate (3) is located inside the rubber sheath (2), the pressure plate (3) and the rubber sheath (2) are fixed, and a second bolt (10) is used to pass through the elastic body (4) and is fixed to the pressure plate (3), the bolt head is located in the pressure plate (3), and a second sealing rubber (11) is used to seal; the sealing ring (5) is arranged on the lower end surface of the elastic body (4); A cavity is provided in the elastic body (4), a strain gauge is provided in the cavity, and a wire locking nut assembly (9) is provided on a side of the elastic body (4); An inward step is provided at the intersection of the upper end surface and the side surface of the elastic body (4), and an inward step is provided at the intersection of the upper end surface and the side surface of the pressure head (1); the rubber sheath (2) is a tubular structure with a small top and a large bottom, and the lower end surface and the side surface are arranged in an L shape, and the L-shaped short side (2a) is embedded in the inward step provided at the intersection of the upper end surface and the side surface of the elastic body (4), and the lower end surface of the pressure plate (3) fits the upper end surface of the L-shaped short side (2a); the upper end surface and the side surface of the rubber sheath (2) are arranged in a Γ shape, and the Γ-shaped short side (2b) is embedded in the inward step provided at the intersection of the upper end surface and the side surface of the pressure head (1); An inwardly contracted plane is provided on the side surface of the lower elastic body (4), and the upward and downward extending length of the inwardly contracted plane along the axis direction of the elastic body (4) does not exceed the inwardly contracted steps provided on the upper end surface and the lower end surface of the elastic body (4); a threading threaded hole perpendicular to the inwardly contracted plane is provided on the outer side of the elastic body (4), and the locking wire nut assembly (9) is threadably matched with the threading threaded hole.

2. The sanitary weighing sensor assembly according to claim 1, characterized in that: The elastic body (4) is a circular plate structure, with a protruding ball head arranged in the middle of the upper end surface; the pressure head (1) is a cylindrical structure, with a spherical inner cavity arranged in the middle of the lower end surface, and the diameter of the spherical inner cavity is larger than the diameter of the protruding ball head arranged in the middle of the upper end surface of the elastic body (4).

3. The sanitary weighing sensor assembly according to claim 1, characterized in that: An inwardly contracted step is provided at the intersection of the lower end surface and the side surface, and the sealing ring (5) is arranged in the step.

4. The sanitary weighing sensor assembly according to claim 1, characterized in that: The thickness of the L-shaped short side (2a) is greater than the height of the inward step provided at the intersection of the upper end surface and the side surface of the elastic body (4), and the thickness of the Γ-shaped short side (2b) is greater than the height of the inward step provided at the intersection of the upper end surface and the side surface of the pressure head (1).

5. The sanitary weighing sensor assembly according to claim 4, characterized in that: The top surface of the Γ-shaped short side (2b) is a slope that is higher on the outside and lower on the inside.

6. The sanitary weighing sensor assembly according to any one of claims 1 to 5, characterized in that: The pressure head (1) is axially provided with a through threaded hole, the space between the pressure head (1), the elastic body (4) and the rubber sleeve (2) is filled with silicone rubber (8) through the through threaded hole, the threaded hole is blocked by a first bolt (7), and a second sealing glue (6) is poured into the threaded hole.

7. The sanitary weighing sensor assembly according to claim 1, characterized in that: The locking wire nut assembly (9) comprises a first sealing ring (9a), a clamping ring (9b), a stud (9c), a second sealing ring (9d), a locking wire nut (9e) and a third sealing ring (9f); the first sealing ring (9a) is a tubular structure, the clamping ring (9b) is a flat washer structure; the stud (9c) is an external thread and has an internal hole, and its external thread cooperates with the external thread of the elastomer (4); the second sealing ring (9d) has a trapezoidal cross section and an internal hole; the locking wire nut (9e) is a U-shaped structure, with a thread arranged inside, and its internal thread cooperates with the stud (9c) external threads are matched, and a hole is opened at the bottom of the U-shaped structure; a first sealing ring (9a), a clamping ring (9b), and a stud (9c) are arranged in sequence from the inside to the outside of the side of the elastic body (4); the locking nut (9e) is connected to the stud (9c) part through a thread; a second sealing ring (9d) is arranged inside the locking nut (9e) and is located between the stud (9c) and the bottom of the internal thread of the locking nut (9e); and a sealing ring (9f) is arranged between the outer indented plane of the elastic body (4) and the end face of the U-shaped structure of the locking nut (9e).

8. The sanitary weighing sensor assembly according to claim 7, characterized in that: A sealing groove is provided on the end face of the U-shaped structure of the wire locking nut (9e); the third sealing ring (9f) is a convex structure with an internal opening; the convex small end face of the third sealing ring (9f) is embedded in the sealing groove of the end face of the U-shaped structure of the wire locking nut (9e).

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