Direct insertion level switch with protection

Abstract

The application provides a straight insertion liquid level switch with protection performance, and relates to the technical field of liquid level switches, which comprises a fixed column, a bearing plate fixedly installed at the top end of the fixed column, and a groove formed in the middle of the top end of the bearing plate. The position of the protective cover is adjusted up and down to wrap the insertion cylinder part, which not only prevents foreign matters from entering the insertion cylinder through the protective cover, but also avoids the contact between the foreign matters and the conductive rod, thereby effectively protecting the conductive rod. The straight insertion liquid level switch is simple in design, convenient to install and operate, and easy to clean and maintain due to the simple structure, can be applied to various application environments, has many practical benefits, and solves the problem that the liquid level switch is placed on a liquid for use, so the conductive rod needs to be protected, otherwise the contact between the foreign matters and the conductive rod will cause a short circuit, which leads to the failure of the liquid level switch to start, and the liquid level switch cannot alarm and timely remind the staff.

Description

Technical Field

[0001] This invention relates to the field of liquid level switch technology, and in particular to a through-hole liquid level switch with protective features. Background Technology

[0002] A level switch is a device used to monitor liquid levels or liquid interfaces. They are widely used in industrial fields to control processes and prevent damage caused by excessively high or low liquid levels. Traditional level switches typically use floats or floating balls to monitor changes in liquid level. When the liquid level reaches a set height, the float moves to the corresponding position, triggering the switch. However, traditional level switches have several problems. First, because the float or floating ball has many moving parts, it is easily affected by particles or impurities in the liquid, leading to malfunctions. Second, traditional level switches generally need to be installed on the side wall or top of the liquid container, which not only occupies space but also makes installation and maintenance difficult. Furthermore, traditional level switches are easily damaged in humid or corrosive environments, affecting their stability and reliability. To address these problems, this manual introduces a plug-in level switch with protective features. This switch uses a plug-in design, making installation convenient and space-saving. Simultaneously, this level switch employs a floatless design, unaffected by particles or impurities in the liquid, thus improving its stability and reliability. In addition, this level switch is made of corrosion-resistant materials, making it suitable for humid or corrosive environments and giving it a longer service life.

[0003] During use, since the liquid level switch is placed on the liquid, the conductive rod needs to be protected. Otherwise, if foreign objects come into contact with the conductive rod, it will cause a short circuit, preventing the liquid level switch from starting and thus failing to alert the staff in time. Summary of the Invention

[0004] This disclosure relates to a direct-insertion level switch with protective features. By adjusting the position of the protective cover, the cover can be made to enclose the insertion cylinder. This not only prevents external debris from passing through the protective cover into the insertion cylinder, but also prevents debris from contacting the conductive rod, thus effectively protecting the conductive rod. Moreover, this direct-insertion level switch is simple in design, easy to install, and very easy to use. Its simple structure also makes it easy to clean and maintain, adaptable to various application environments, and has many practical benefits.

[0005] In a first aspect, this disclosure provides a direct-insertion liquid level switch with protective properties, specifically comprising: a fixed post; a support plate fixedly installed at the top end of the fixed post; a groove is formed in the middle of the top end of the support plate, and threaded grooves are formed at both ends of the groove; rectangular grooves are formed at both ends of the support plate, and threaded grooves are formed at both ends of the rectangular grooves; and a ring of blind holes is formed at the left end of the top end of the support plate.

[0006] A cylindrical protective cover is slidably installed on the annular sidewall of the outer end of the support plate, and the annular sidewall of the protective cover is evenly provided with through-hole limiting holes; anti-detachment strips are evenly fixedly installed on the annular sidewall of the inner end of the protective cover; a switch is installed at the top of the support plate; an alarm is installed in the middle of the support plate; and fixing plates are fixedly installed at the rectangular grooves at both ends of the support plate, and the fixing plates are provided with through-hole round holes in the middle.

[0007] A floating disc is slidably installed on the annular sidewall of the fixed column, and an annular cylinder is fixedly installed in the middle of the floating disc; an insert is fixedly installed at the left end of the floating disc, and a dust cover is slidably installed at the upper end of the inner cavity of the insert; the dust cover has through rod holes at both ends, and a through round hole in the middle of the dust cover; a protective cylinder is fixedly installed at the upper end of the edge of the dust cover; and six track bars are fixedly installed on the annular sidewall of the dust cover.

[0008] In at least some embodiments, a stabilizing plate is fixedly installed at the lower end of the fixing column, and a ring of through holes is opened at the edge of the stabilizing plate, and through bolts are inserted into the holes of the stabilizing plate.

[0009] In at least some embodiments, anti-detachment grooves are uniformly provided on the annular sidewall of the support plate, an insertion hole is provided at the left end of the support plate and the insertion hole is located directly below the switch, and through guide holes are uniformly provided on the edge of the support plate.

[0010] In at least some embodiments, a mounting plate is fixedly installed at the lower end of the switch, and six through screws are rotatably inserted on the mounting plate. A connection groove is provided in the middle of the bottom of the switch.

[0011] In at least some embodiments, the bottom of the switch has an annular buffer groove, and the two ends of the bottom of the switch have inner rod grooves respectively.

[0012] In at least some embodiments, a connecting wire is installed at the upper end of the alarm, and a stabilizing block is fixedly installed at the middle of the bottom of the alarm.

[0013] In at least some embodiments, through-hole limiting rods are respectively inserted into the circular holes of the two fixing plates, and tension spring plates are respectively fixedly installed at the opposite ends of the two limiting rods.

[0014] In at least some embodiments, a stabilizing disk is fixedly installed at the lower end of the insert, and a through screw is installed around the edge of the stabilizing disk, and a conductive rod is fixedly installed in the middle of the inner cavity of the insert.

[0015] In at least some embodiments, buffer rods are fixedly installed at both ends of the inner cavity of the insert, and springs are sleeved on the annular sidewalls of the buffer rods. Six track grooves are provided on the inner sidewall of the insert.

[0016] This invention provides a direct-insertion liquid level switch with protective properties, which has the following beneficial effects:

[0017] In this invention, the liquid level switch allows for the adjustment of the protective cover's position up and down to enclose the insertion cylinder. This not only prevents external debris from passing through the protective cover into the insertion cylinder but also avoids contact between debris and the conductive rod, thus effectively protecting the conductive rod. Furthermore, this direct-insertion liquid level switch is simple in design, easy to install, and very convenient to use. Its simple structure also makes it easy to clean and maintain, adaptable to various application environments, and offers numerous practical benefits.

[0018] Furthermore, when liquid is added to the container, the buoyancy generated by the liquid gradually lifts the floating disc. Since the guide rod on the floating disc slides through the guide hole, the guide hole effectively restricts the guide rod, ensuring that the floating disc always slides stably up and down in a straight line, preventing it from tilting or deviating during the sliding process. As the liquid level continues to rise, the floating disc will drive the insertion cylinder to rise synchronously in a straight line, allowing the conductive rod to be smoothly and automatically inserted into the electrical connection tank, realizing the automatic opening of the switch. This automatic opening method does not require manual operation, which not only reduces manual intervention and labor costs, but also avoids problems such as delayed or misaligned switch opening caused by untimely or operational errors. It ensures that the switch opens accurately and promptly when the liquid level reaches the set position, improving the automation and reliability of the entire device, while also reducing the frequency of manual contact with the equipment and lowering the safety risks during operation.

[0019] By inserting the conductive rod into the electrical groove to open the switch, the switch activates the alarm via the connecting wire. The alarm sounds to alert the staff. The plug-in level switch has an automatic alarm function, which can issue an alarm signal to remind the staff to deal with it in time. With its automatic alarm function, this plug-in level switch can immediately issue an alarm signal when a specific liquid level is reached, providing the staff with proactive and timely early warning, and greatly avoiding operational failures or safety accidents that may be caused by abnormal liquid levels. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the left front upper axis view structure of this application is shown;

[0024] Figure 2 A schematic diagram of the structure of the part of this application with the protective cover removed is shown;

[0025] Figure 3 A schematic diagram of the structure of the carrier plate, switch, alarm and fixing plate of this application is shown;

[0026] Figure 4 This paper shows a schematic diagram of the disassembled structure of the carrier plate, switch and alarm parts of this application;

[0027] Figure 5 A cross-sectional view of the switch portion of this application is shown;

[0028] Figure 6 A schematic diagram of the floating disc and insert portion of this application is shown;

[0029] Figure 7 A schematic diagram of the insert and dust cover structure of this application is shown;

[0030] Figure 8 A schematic diagram of a half-section of the insert portion of this application is shown;

[0031] Figure 9 A schematic diagram of the dust cover portion of this application is shown.

[0032] List of reference numerals

[0033] 1. Fixed column; 101. Stabilizing plate; 102. Bolt; 2. Bearing plate; 201. Anti-detachment groove; 202. Insertion hole; 203. Guide hole; 3. Protective cover; 301. Limiting hole; 302. Anti-detachment strip; 4. Switch; 401. Fixed plate; 402. Connecting groove; 403. Buffer groove; 404. Inner rod groove; 5. Alarm; 501. Connecting wire; 502. Stabilizing block; 6. Fixed plate; 601. Limiting rod; 602. Tension spring plate; 7. Floating plate; 8. Insert cylinder; 801. Stabilizing plate; 802. Conductive rod; 803. Buffer rod; 804. Track groove; 9. Dust cover; 901. Protective cylinder; 902. Track strip. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 9 :

[0036] This invention proposes a direct-insertion liquid level switch with protective performance, comprising: a fixed post 1; a support plate 2 fixedly mounted at the top end of the fixed post 1; a groove is formed in the middle of the top end of the support plate 2, and threaded grooves are formed at both ends of the groove; rectangular grooves are formed at both ends of the support plate 2, and threaded grooves are formed at both ends of the rectangular grooves; a ring of blind holes is formed at the left end of the top end of the support plate 2; a cylindrical protective cover 3 is slidably mounted on the annular sidewall of the outer end of the support plate 2, and through-hole limiting members are uniformly formed on the annular sidewall of the protective cover 3. Hole 301; liquid passes through the limiting hole 301. Anti-detachment strips 302 are evenly fixedly installed on the annular sidewall of the inner end of the protective cover 3. The anti-detachment strips 302 are slidably installed in the anti-detachment groove 201. When the protective cover 3 slides up and down, the anti-detachment strips 302 are restricted by the anti-detachment groove 201, and the protective cover 3 can only slide up and down to prevent the protective cover 3 from shifting or tilting when sliding up and down. A switch 4 is installed at the top of the support plate 2. An alarm 5 is installed in the middle of the support plate 2. Symmetrical ear plates are fixedly installed at the lower end of the alarm 5. The middle of the ear plates is rotated and installed. A through screw is inserted into each of the rectangular slots at both ends of the support plate 2, and a through circular hole is opened in the middle of the fixing plate 6. Symmetrical side plates are fixedly installed on the lower side wall of the fixing plate 6, and through screws are inserted in the middle of the side plates. The screws on the side plates are rotated and inserted into the threaded grooves of the support plate 2, thus fixing the fixing plate 6 to the support plate 2. A floating disc 7 is slidably installed on the annular side wall of the fixing column 1, and an annular cylinder is fixedly installed in the middle of the floating disc 7. The floating disc 7 is made of a relatively light material, which allows the liquid to easily support the floating disc. The floating plate 7 has six guide rods fixedly installed at the upper edge of its edge. The side wall of the annular cylinder is in contact with the side wall of the fixed column 1, so that the liquid will not cross the annular cylinder and enter the floating plate 7. The left end of the floating plate 7 has a plug 8 fixedly installed, and the upper end of the inner cavity of the plug 8 has a dust cover 9 slidably installed. The dust cover 9 is made of a relatively light material. The two ends of the dust cover 9 have through rod holes, and the middle of the dust cover 9 has a through round hole. The dust cover 9 corresponds vertically to the buffer tank 403, and the round hole on the dust cover 9 corresponds vertically to the conductive rod 802.

[0037] The lower end of the fixed column 1 is fixedly installed with a stabilizing plate 101. A circular hole is opened around the edge of the stabilizing plate 101, and a through bolt 102 is inserted into the circular hole of the stabilizing plate 101. The bolt 102 is rotated and inserted into the bottom of the inner cavity of the container, and the stabilizing plate 101 and the fixed column 1 are fixedly installed in the container. Anti-detachment grooves 201 are evenly opened on the annular side wall of the support plate 2. An insertion hole 202 is opened at the left end of the support plate 2, and the insertion hole 202 is located directly below the switch 4. The insertion cylinder 8 is vertically aligned with the insertion hole 202. A through guide hole 203 is evenly opened around the edge of the support plate 2. The guide rod on the floating plate 7 slides through the guide hole 203. When the floating plate 7 slides up and down, the guide rod on the floating plate 7 is restricted by the guide hole 203, and the floating plate 7 can only slide up and down to prevent the floating plate 7 from tilting when sliding up and down.

[0038] A mounting plate 401 is fixedly installed at the lower end of switch 4. Six through screws are rotatably inserted into the mounting plate 401. By rotating the screws on the mounting plate 401 into the blind holes of the support plate 2, the mounting plate 401 and switch 4 are fixed and restrained. This prevents the mounting plate 401 or part of switch 4 from moving when touched. A connecting groove 402 is opened in the middle of the bottom of switch 4. The conductive rod 802 corresponds vertically to the connecting groove 402. When the conductive rod 802 is inserted into the connecting groove 402, switch 4 is activated. At this time, switch 4 is activated through connecting wire 501. Alarm 5 sounds to alert staff and prompt them to take appropriate action. Switch 4 has a ring-shaped buffer groove 403 at its bottom and inner rod grooves 404 at both ends of its bottom. A connecting wire 501 is installed at the top of alarm 5, and the other end of the connecting wire 501 is fixedly installed in switch 4. A stabilizing block 502 is fixedly installed in the middle of the bottom of alarm 5. The stabilizing block 502 is inserted into the groove in the middle of the support plate 2. Then, the screw on the ear plate of alarm 5 is rotated and inserted into the screw groove to fix alarm 5 on support plate 2.

[0039] Two fixed plates 6 have through-hole limit rods 601 inserted into their circular holes. Spring plates 602 are fixedly installed at opposite ends of the two limit rods 601, with the springs on the spring plates 602 connected to the fixed plates 6. The limit rods 601 pass through the limit holes 301. By grasping the two spring plates 602 and pulling the two limit rods 601 in opposite directions, the limit rods 601 will be pulled out of the limit holes 301. Then, the protective cover 3 is moved up and down to adjust its position. After releasing the two limit rods 601, they will insert into the corresponding limit holes 301, temporarily restricting the protective cover 3 and preventing it from sliding down. The protective cover 3 partially encloses the insert 8, preventing external debris from passing through the protective cover 3 and entering the insert 8, thus avoiding short circuits caused by debris contacting the conductive rod 802.

[0040] A stabilizing plate 801 is fixedly installed at the lower end of the insert 8, and a through screw is installed around the edge of the stabilizing plate 801. The screw on the stabilizing plate 801 is rotated and inserted into the float 7, fixing the stabilizing plate 801 and the insert 8 onto the float 7. A conductive rod 802 is fixedly installed in the middle of the inner cavity of the insert 8. When liquid is added to the container, the float 7 will be slowly lifted. At this time, the float 7 and the insert 8 will rise as the liquid level increases. When the upper end of the insert 8 continues to rise through the insertion hole 202, the upper end of the protective cylinder 901 will enter the buffer groove 403, and the buffer rod 803 will also be inserted into the inner rod groove 404. At this time, the dust cover 9 is pressed down by the bottom of the switch 4, and the dust cover 9 and the buffer rod 803 will slide downward inside the insert 8. The dust cover 9 will slide downward on the conductive rod 802. During the rise of the conductive rod 802, the conductive rod 802 will be inserted into the coupling groove 402. Conversely, when the liquid level drops, the conductive rod... 802 will be pulled out from the conductive slot 402. At this time, the spring on the buffer rod 803 will slowly push up the dust cover 9 to protect the conductive rod 802. The two ends of the inner cavity of the insert 8 are respectively fixedly installed with buffer rods 803, and the annular side wall of the buffer rod 803 is fitted with a spring. The spring on the buffer rod 803 has a relatively small spring constant, which means that the spring is relatively soft and easy to compress. At the same time, the spring only has the function of resetting the dust cover 9. The upper end of the buffer rod 803 slides through the rod hole of the dust cover 9. Six track grooves 804 are opened on the inner side wall of the insert 8. A protective cylinder 901 is fixedly installed at the upper end of the edge of the dust cover 9. Six track bars 902 are fixedly installed on the annular side wall of the dust cover 9. The track bars 902 are slidably installed in the track grooves 804. When the dust cover 9 slides up and down, the track bars 902 are restricted by the track grooves 804, and the dust cover 9 can only slide up and down to prevent the dust cover 9 from tilting when sliding up and down.

[0041] Example 2, based on Example 1, such as Figure 1 and Figure 9 As shown, a stabilizing plate 801 is fixedly installed at the lower end of the insert 8, and a ring of through screws is installed on the edge of the stabilizing plate 801. Remove the stabilizing plate 801 and screws, and then fix the insert 8 to the floating plate 7 to stabilize and restrict the insert 8, prevent the screws from loosening after long-term use, and also save on parts costs.

[0042] The working principle of this embodiment is as follows: In use, firstly, by pulling the two tension spring plates 602, the two limiting rods 601 are pulled out from the limiting holes 301 on the protective cover 3; then, the protective cover 3 is moved up and down to adjust its position so that it partially covers the insert 8; after releasing the tension spring plates 602, the limiting rods 601 are reinserted into the corresponding limiting holes 301 under the action of the tension spring, thereby temporarily fixing the protective cover 3 and preventing it from sliding down; the protective cover 3 can effectively block external debris from entering the insert 8, preventing the conductive rod 802 from short-circuiting due to contact with debris; the stabilizing plate 101 at the lower end of the fixing column 1 is fixed to the bottom of the container with bolts 102 to ensure that the entire liquid level switch is stably installed in the container; when the liquid level in the container gradually rises, the liquid will lift the lighter floating plate 7, causing it to slide upwards along the annular sidewall of the fixing column 1; the guide rod on the floating plate 7 passes through the guide hole 203 on the bearing plate 2, restricting its movement to only the vertical direction and preventing tilting; as... As the liquid level continues to rise, the insert 8 moves upward along with the float 7, its upper part gradually penetrating the insertion hole 202 on the support plate 2. As the insert 8 continues to rise, its top protective sleeve 901 enters the buffer groove 403 at the bottom of the switch 4, and at the same time, the buffer rod 803 inside the insert 8 inserts into the inner rod groove 404 at the bottom of the switch 4. At this time, the bottom of the switch 4 presses down the dust cover 9, causing it to slide downward along the inner wall of the insert 8. The dust cover 9 is fitted over the conductive rod 802 and moves downward. During this process, the conductive rod 802 gradually inserts into the electrical connection groove 402 at the bottom of the switch 4, triggering the switch 4 to start. The switch 4 activates the alarm 5 through the connecting wire 501, causing it to sound an alarm to remind the staff to take appropriate measures. When the liquid level drops, the float 7 falls, the conductive rod 802 is pulled out of the electrical connection groove 402, and the switch 4 closes. At this time, the spring on the buffer rod 803 lifts the dust cover 9 back to its initial position, continuing to protect the conductive rod 802.

[0043] The following points should be noted in this article:

[0044] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0045] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0046] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A through-hole liquid level switch with protective features, comprising: A fixed column (1); a bearing plate (2) is fixedly installed at the top of the fixed column (1); a groove is provided in the middle of the top of the bearing plate (2), and threaded grooves are provided at both ends of the groove of the bearing plate (2); a rectangular groove is provided at both ends of the bearing plate (2), and threaded grooves are provided at both ends of the rectangular groove of the bearing plate (2); a ring of blind holes is provided at the left end of the top of the bearing plate (2); characterized in that a cylindrical protective cover (3) is slidably installed on the annular sidewall of the outer end of the bearing plate (2), and a through limiting hole (301) is uniformly provided on the annular sidewall of the protective cover (3); a ring of blind holes is uniformly provided on the annular sidewall of the inner end of the protective cover (3). The support plate (2) is fixedly installed with anti-detachment strips (302); a switch (4) is installed at the top of the support plate (2); an alarm (5) is installed in the middle of the support plate (2); a fixing plate (6) is fixedly installed at the rectangular grooves at both ends of the support plate (2), and a through round hole is opened in the middle of the fixing plate (6); a floating plate (7) is slidably installed on the annular sidewall of the fixing column (1), and an annular cylinder is fixedly installed in the middle of the floating plate (7); an insert (8) is fixedly installed at the left end of the floating plate (7), and a dust cover (9) is slidably installed at the upper end of the inner cavity of the insert (8); through rod holes are opened at both ends of the dust cover (9), and the dust cover... A through-hole is provided in the middle of the cover (9); a stabilizing plate (101) is fixedly installed at the lower end of the fixing column (1), and a ring of through-holes is provided at the edge of the stabilizing plate (101), and through bolts (102) are inserted into the through-holes of the stabilizing plate (101); anti-detachment grooves (201) are evenly provided on the annular sidewall of the bearing plate (2), an insertion hole (202) is provided at the left end of the bearing plate (2), and the insertion hole (202) is located directly below the switch (4), and through guide holes (203) are evenly provided at the edge of the bearing plate (2); a fixing plate is fixedly installed at the lower end of the switch (4). (401), and six through screws are rotatably inserted on the fixed plate (401). A connecting groove (402) is opened in the middle of the bottom of the switch (4); a ring-shaped buffer groove (403) is opened at the bottom of the switch (4), and inner rod grooves (404) are opened at both ends of the bottom of the switch (4); a connecting wire (501) is installed at the upper end of the alarm (5), and a stabilizing block (502) is fixedly installed in the middle of the bottom of the alarm (5); through limit rods (601) are inserted into the round holes of the two fixed plates (6), and tension spring plates (602) are fixedly installed at the opposite ends of the two limit rods (601).

2. The direct-insertion liquid level switch with protective performance according to claim 1, characterized in that: A stabilizing plate (801) is fixedly installed at the lower end of the insert (8), and a through screw is installed on the edge of the stabilizing plate (801). A conductive rod (802) is fixedly installed in the middle of the inner cavity of the insert (8).

3. A direct-insertion liquid level switch with protective performance according to claim 1, characterized in that: The inner cavity of the insert (8) is fixedly installed with buffer rods (803) at both ends, and springs are sleeved on the annular sidewall of the buffer rods (803). Six track grooves (804) are opened on the inner sidewall of the insert (8).

4. A direct-insertion liquid level switch with protective performance according to claim 1, characterized in that: A protective cylinder (901) is fixedly installed at the upper end of the edge of the dust cover (9), and six track bars (902) are fixedly installed on the annular sidewall of the dust cover (9).

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