Radar level meter

Abstract

The invention discloses a radar level meter, and belongs to the technical field of radar level meters, the radar level meter comprises a signal transmission rod, an antenna housing, an electric motor, a rotating rod fixedly mounted on the inner wall of the antenna housing and at the output end of the electric motor, and a reciprocating screw rod I fixedly mounted at the bottom end of the rotating rod; and the limiting long rod is fixedly installed on the inner wall of the antenna cover, and the outer surface of the limiting long rod is movably sleeved with a circular brush. In the embodiment of the invention, when the radar antenna is located in the tank body for detection, in order to prevent dust and smoke dust in the tank body from entering the surface of the radar antenna, the electric motor is started through an external power supply, and the electric motor is powered on; the model of an electric motor is RF-300, the voltage of the electric motor is 6V / 12V, at the moment, the electric motor drives a rotating rod to rotate, the rotating rod drives a first reciprocating screw rod to rotate, a round brush slides on the outer surfaces of the first reciprocating screw rod and a long limiting rod in a reciprocating mode under limiting of the long limiting rod, dust on the surfaces can be cleaned, and the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of radar level gauge technology, and particularly to a radar level gauge. Background Technology

[0002] Radar level gauges are non-contact level measurement devices widely used in industrial storage tanks, silos, and other similar applications. They detect material height by transmitting and receiving microwave signals. However, in harsh working conditions with high levels of dust and fumes (such as in cement plants, chemical plants, and the metallurgical industry), the detection accuracy of radar antennas is easily and severely affected. Specifically: Dust adhesion issue: When the radar antenna is installed inside the tank, dust and fumes easily adhere to the antenna surface or dustproof mesh, causing signal attenuation or scattering and reducing measurement accuracy. Traditional cleaning methods rely on regular manual maintenance, which is inefficient and difficult to achieve in real time.

[0003] Dust filter clogging and insufficient heat dissipation: While existing dust filters (such as metal mesh) can block large dust particles, they are prone to clogging after prolonged use and may interfere with radar signals. Furthermore, dust accumulation hinders heat dissipation inside the radome, affecting the long-term stability of the equipment.

[0004] Insufficient dynamic cleaning technology: Currently, some equipment uses fixed cleaning structures (such as static brushes or airflow blowing), but there are problems such as cleaning dead corners, low efficiency or high energy consumption. There is a lack of a multi-functional solution that integrates dynamic cleaning, dust removal by vibration of dust screen and active heat dissipation. Summary of the Invention

[0005] The purpose of this invention is to provide a radar level gauge to solve the problems of dust adhesion, dust filter blockage, insufficient heat dissipation, and inadequate dynamic cleaning technology in the prior art.

[0006] To achieve the above objectives, the technical solution proposed in this invention includes: a signal transmission rod and an antenna radome; an electric motor, fixedly installed on the inner wall of the antenna radome, with a rotating rod fixedly installed at the output end of the electric motor, and a reciprocating lead screw fixedly installed at the bottom end of the rotating rod; a limiting rod, fixedly installed on the inner wall of the antenna radome, with a circular brush movably sleeved on the outer surface of the limiting rod, and the circular brush simultaneously movably sleeved on the outer surface of the reciprocating lead screw; and a hollow mounting cylinder, fixedly installed at the bottom of the signal transmission rod, with a hollow mounting cylinder fixedly installed at the bottom of the signal transmission rod, and a radar antenna fixedly installed at the bottom of the hollow mounting cylinder, with the circular brush slidably connected to the outer surface of the radar antenna.

[0007] The technical effect of adopting the above-mentioned further solution is as follows: When the radar antenna is located inside the tank for detection, in order to prevent dust and smoke from the inside of the tank from entering the surface of the radar antenna, an electric motor is started by an external power source. At this time, the electric motor drives the rotating rod to rotate, and the rotating rod drives the reciprocating screw to rotate. Under the limit of the limiting rod, the circular brush slides back and forth on the outer surface of the reciprocating screw and the limiting rod, which can clean the dust on the surface and improve the detection accuracy.

[0008] Preferably, the top of the radome is provided with a threaded groove, and the radome is movably embedded in the interior of the hollow mounting cylinder through the threaded groove. The bottom end of the reciprocating lead screw is movably fitted with belts through two pulleys, and one end of the two belts is movably fitted with a fan through two pulleys.

[0009] The technical effect of adopting the above-mentioned further solution is that the radome can be removed from the inside of the hollow mounting cylinder by rotating it. The bottom end of the reciprocating screw drives the pulley to rotate, and the pulley drives the fan to rotate through the belt and another pulley. The tops of the two fans are connected by the belt. At this time, the two fans rotate at the same time, which can blow away the dust and smoke that are about to enter the radome.

[0010] Preferably, the two fans rotate inside the radome, and the inner wall of the radome is provided with multiple sliding grooves. Sliding rings are slidably connected inside the multiple sliding grooves. The top of the sliding rings is fixedly installed with a locking hole, and the top of each of the multiple locking holes is fixedly installed with a fixing block.

[0011] The technical effect of adopting the above-mentioned further solution is that by rotating the threaded rod and moving it back and forth inside the rectangular block, the threaded rod disengages from the inside of the locking hole. At this time, the limiting strip rotates around the threaded rod as the center and disengages from the bottom of the dustproof net. The dustproof net can be removed, replaced, and its surface can be cleaned.

[0012] Preferably, the plurality of fixing blocks are fixedly installed on the inner wall of the antenna cover, the inner wall of the sliding ring is provided with a mounting groove, a dustproof net is detachably connected inside the mounting groove, and a plurality of rectangular blocks are fixedly installed at the bottom of the sliding ring, and a rotating rod is movably embedded inside the plurality of rectangular blocks.

[0013] The technical advantage of adopting the above-mentioned further solution is that it is mainly used for the disassembly and installation of dustproof nets.

[0014] Preferably, each of the multiple rotating rods has a limiting strip movably fitted on its outer surface, and each of the multiple limiting strips has a locking hole at its top. Each of the dustproof nets has a rectangular block fixedly installed at its bottom, and each of the multiple rectangular blocks has a threaded rod movably embedded inside its interior. Each of the multiple threaded rods is movably embedded inside the multiple locking holes.

[0015] The technical effect of adopting the above-mentioned further solution is that the limiting strip rotates around the rotating rod as the center, and the threaded rod is embedded in the card hole to limit the limiting strip.

[0016] Preferably, the plurality of limiting strips are located at the bottom of the dustproof net, and a second reciprocating screw is fixedly installed at the bottom of the first reciprocating screw. A sliding block is movably sleeved on the outer surface of the second reciprocating screw, and a contact block is fixedly installed at the bottom of the sliding block.

[0017] The technical effect of adopting the above-mentioned further solution is: in order to avoid the excessive dust affecting the detection of the radar antenna, the first reciprocating screw will simultaneously drive the second reciprocating screw to rotate. At this time, under the limit of the limiting rod, the sliding block slides back and forth on the outer surface of the second reciprocating screw, and the sliding causes the bottom contact block to move.

[0018] Preferably, the sliding block is movably sleeved on the outer surface of the limiting rod, the contact block is in contact with the top of the dustproof net, a heat sink is fixedly installed on the top of the signal transmission rod, a level gauge housing is fixedly installed on the top of the heat sink, a display screen is provided on one side of the level gauge housing, and multiple control buttons are provided on one side of the level gauge housing.

[0019] The technical effect of adopting the above-mentioned further solution is that: the contact block contacts the top of the dustproof net, and after contact, under the limit of the card hole, the sliding ring slides back and forth quickly inside the sliding groove, which can shake off the dust on the surface of the dustproof net and reduce the dust on the surface of the dustproof net. The material of the dustproof net is glass fiber, which can not interfere with the signal emitted by the radar antenna and does not affect the radar antenna's distance detection.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this embodiment of the invention, when the radar antenna is located inside the tank for detection, in order to prevent dust and smoke from the inside of the tank from entering the surface of the radar antenna, an electric motor is started by an external power source. The electric motor is model RF-300 and the voltage is 6V / 12V. At this time, the electric motor drives the rotating rod to rotate, and the rotating rod drives the reciprocating screw to rotate. Under the limit of the limiting rod, the circular brush slides back and forth on the outer surface of the reciprocating screw and the limiting rod, which can clean the dust on the surface and improve the detection accuracy.

[0021] 2. In this embodiment of the invention, to avoid excessive dust affecting the detection of the radar antenna, the first reciprocating screw will simultaneously drive the second reciprocating screw to rotate. Under the limitation of the limiting rod, the sliding block slides back and forth on the outer surface of the second reciprocating screw. When sliding, it drives the bottom contact block to move and contact the top of the dustproof net. After contact, under the limitation of the locking hole, the sliding ring slides back and forth quickly inside the sliding groove, which can shake off the dust on the surface of the dustproof net and reduce the dust on the surface of the dustproof net. The material of the dustproof net is glass fiber, which can not interfere with the signal emitted by the radar antenna and does not affect the radar antenna's distance detection. By rotating the threaded rod, it moves back and forth inside the rectangular block. At this time, the threaded rod disengages from the inside of the locking hole. At this time, the limiting strip rotates around the threaded rod as the center and disengages from the bottom of the dustproof net. The dustproof net can be disassembled and replaced, and its surface can be cleaned.

[0022] 3. In this embodiment of the invention, the bottom end of the reciprocating lead screw drives the pulley to rotate, and the pulley drives the fan to rotate via a belt through another pulley. The tops of the two fans are connected by a belt. At this time, the two fans rotate simultaneously, which can blow away the dust and smoke that are about to enter the radome. When the two fans are rotating, they can also effectively dissipate heat from the inside of the radome, reducing the amount of dust entering the radome. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional structural diagram of a radar level gauge.

[0024] Figure 2 This is a schematic diagram of a radar level gauge with a separate outer casing and sliding ring.

[0025] Figure 3 This is a schematic diagram of the internal structure of the outer casing of a radar level gauge.

[0026] Figure 4 This is a magnified schematic diagram of the sliding ring structure of a radar level gauge.

[0027] Figure 5 for Figure 4 Enlarged view of section A.

[0028] Figure 6 This is a schematic diagram of the internal structure of the outer casing of a radar level gauge.

[0029] Figure 7 This is a schematic diagram of the bottom planar structure of a radar level gauge.

[0030] The attached diagram shows the following markings: 101, level gauge housing; 102, heat sink; 103, hollow mounting cylinder; 104, display screen; 105, control buttons; 106, radar antenna; 107, radome; 108, threaded groove; 109, electric motor; 110, rotating rod; 111, limit rod; 112, reciprocating screw one; 113, circular brush; 114, belt; 115, fan; 116, reciprocating screw two; 117, sliding block; 118, contact block; 119, slide groove; 121, sliding ring; 122, dustproof net; 123, rectangular block one; 124, threaded rod; 125, rectangular block two; 126, rotating rod; 127, limit strip; 128, locking hole; 129, fixing block; 130, mounting groove; 131, signal transmission rod. Detailed Implementation

[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1-7This invention provides a radar level gauge, comprising: a signal transmission rod 131 and an antenna cover 107; an electric motor 109 fixedly installed on the inner wall of the antenna cover 107, with a rotating rod 110 fixedly installed at the output end of the electric motor 109, and a reciprocating lead screw 112 fixedly installed at the bottom end of the rotating rod 110; a limiting rod 111 fixedly installed on the inner wall of the antenna cover 107, with a circular brush 113 movably sleeved on the outer surface of the limiting rod 111, and the circular brush 113 also movably sleeved on the outer surface of the reciprocating lead screw 112; and a hollow mounting cylinder 103 fixedly installed at the bottom of the signal transmission rod 131, with the hollow mounting cylinder fixedly installed at the bottom of the signal transmission rod 131. 103. A radar antenna 106 is fixedly installed at the bottom of the hollow mounting cylinder 103. A circular brush 113 is slidably connected to the outer surface of the radar antenna 106. When the radar antenna 106 is inside the tank for detection, in order to prevent dust and smoke from the inside of the tank from entering the surface of the radar antenna 106, an electric motor 109 is started by an external power source. At this time, the electric motor 109 drives the rotating rod 110 to rotate, and the rotating rod 110 drives the reciprocating screw 112 to rotate. Under the limit of the limiting rod 111, the circular brush 113 slides back and forth on the outer surface of the reciprocating screw 112 and the limiting rod 111, which can clean the dust on the surface and improve the detection accuracy.

[0036] In one embodiment, the top of the radome 107 is provided with a threaded groove 108. The radome 107 is movably embedded inside the hollow mounting cylinder 103 through the threaded groove 108. The bottom end of the reciprocating screw 112 is movably fitted with belts 114 through two pulleys. One end of the two belts 114 is movably fitted with fans 115 through the two pulleys. By rotating the radome 107, it can be removed from the inside of the hollow mounting cylinder 103. The bottom end of the reciprocating screw 112 drives the pulley to rotate. The pulley drives the fan 115 to rotate through the belt 114 and the other pulley. The tops of the two fans 115 are connected through the belt 114. At this time, the two fans 115 rotate simultaneously, which can blow away the dust and smoke that are about to enter the radome 107.

[0037] In one embodiment, two fans 115 rotate inside the radome 107. The inner wall of the radome 107 has multiple grooves 119. A sliding ring 121 is slidably connected inside the multiple grooves 119. A locking hole 128 is fixedly installed on the top of the sliding ring 121. A fixing block 129 is fixedly installed on the top of each locking hole 128. By rotating the threaded rod 124, it moves back and forth inside the rectangular block 123. At this time, the threaded rod 124 disengages from the inside of the locking hole 128. At this time, the limiting strip 127 rotates around the threaded rod 124 as the center. The limiting strip 127 disengages from the bottom of the dustproof net 122, so that the dustproof net 122 can be removed, replaced, and its surface can be cleaned.

[0038] In one embodiment, multiple fixing blocks 129 are fixedly installed on the inner wall of the antenna cover 107. The inner wall of the sliding ring 121 is provided with a mounting groove 130. A dustproof net 122 is detachably connected inside the mounting groove 130. Multiple rectangular blocks 125 are fixedly installed at the bottom of the sliding ring 121. A rotating rod 126 is movably embedded inside each of the multiple rectangular blocks 125, which is mainly used for disassembling and installing the dustproof net 122.

[0039] In one embodiment, a limiting strip 127 is movably fitted onto the outer surface of a plurality of rotating rods 126, and a locking hole 128 is provided at the top of each of the plurality of limiting strips 127. A rectangular block 123 is fixedly installed at the bottom of each of the plurality of dustproof nets 122, and a threaded rod 124 is movably embedded inside each of the plurality of rectangular blocks 123. The threaded rod 124 is movably embedded inside the plurality of locking holes 128. The limiting strip 127 rotates around the rotating rod 126 as the center. The threaded rod 124 embedded inside the locking hole 128 can be used to limit the limiting strip 127.

[0040] In one embodiment, multiple limiting strips 127 are located at the bottom of the dustproof net 122. A reciprocating screw 116 is fixedly installed at the bottom of the reciprocating screw 112. A sliding block 117 is movably sleeved on the outer surface of the reciprocating screw 116. A contact block 118 is fixedly installed at the bottom of the sliding block 117. In order to avoid the excessive dust affecting the detection of the radar antenna 106, the reciprocating screw 112 will drive the reciprocating screw 116 to rotate. At this time, under the limitation of the limiting rod 111, the sliding block 117 slides back and forth on the outer surface of the reciprocating screw 116. When sliding, it drives the contact block 118 at the bottom to move.

[0041] In one embodiment, the sliding block 117 is movably sleeved on the outer surface of the limiting rod 111, the contact block 118 contacts the top of the dustproof net 122, the top of the signal transmission rod 131 is fixedly mounted with a heat sink 102, the top of the heat sink 102 is fixedly mounted with a level gauge housing 101, a display screen 104 is opened on one side of the level gauge housing 101, and a plurality of control buttons 105 are provided on one side of the level gauge housing 101. The contact block 118 contacts the top of the dustproof net 122. After contact, under the limitation of the card hole 128, the sliding ring 121 slides back and forth quickly inside the sliding groove 119, which can shake off the dust on the surface of the dustproof net 122 and reduce the dust on the surface of the dustproof net 122. The material of the dustproof net 122 is glass fiber, which can not interfere with the signal emitted by the radar antenna 106 and does not affect the radar antenna 106's distance detection.

[0042] Working Principle: During use, when the radar antenna 106 is located inside the tank for detection, to prevent dust and fumes from entering the surface of the radar antenna 106, an electric motor 109 (model RF-300, voltage 6V / 12V) is started by an external power source. The electric motor 109 drives the rotating rod 110 to rotate, which in turn drives the reciprocating screw 112 to rotate. Under the control of the limiting rod 111, the circular brush 113 slides back and forth on the outer surface of the reciprocating screw 112 and the limiting rod 111, cleaning the surface dust and improving detection accuracy. Simultaneously, the bottom end of the reciprocating screw 112 drives the pulley to rotate, and the pulley, via belt 114, drives another pulley... The two fans 115 rotate, and their tops are connected by a belt 114. When both fans 115 rotate simultaneously, they disperse dust and smoke that are about to enter the radome 107. The rotation of the two fans also effectively dissipates heat from the inside of the radome 107, reducing the amount of dust entering. The dustproof net 122 blocks some dust and smoke, which adheres to its surface. To prevent excessive dust from affecting the detection of the radar antenna 106, the reciprocating screw 112 simultaneously drives the reciprocating screw 116 to rotate. Under the limiting action of the limiting rod 111, the sliding block 117 rapidly reciprocates along the outer surface of the reciprocating screw 116. During the sliding process, the sliding block 117 drives the bottom contact block 118 to move accordingly. After the contact block 118 contacts the top of the dustproof net 122, under the restriction of the spring 1281, the sliding ring 121 is forced to move back and forth quickly in the slide groove 119. Through this sliding mechanism, the dust on the surface of the dustproof net 122 is shaken off, thereby playing a cleaning role and reducing the dust on the surface of the dustproof net 122. The material of the dustproof net 122 is glass fiber, which can not interfere with the signal emitted by the radar antenna 106 and does not affect the radar antenna 106's distance detection. By rotating the threaded rod 124, it moves back and forth inside the rectangular block 123. At this time, the threaded rod 124 disengages from the inside of the locking hole 128. At this time, the limiting strip 127 rotates around the threaded rod 124 as the center and disengages from the bottom of the dustproof net 122. The dustproof net 122 can be removed and replaced for surface cleaning.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A radar level gauge, comprising: The signal transmission rod (131) and the antenna radome (107) are characterized in that, An electric motor (109) is fixedly installed on the inner wall of the radome (107), and a rotating rod (110) is fixedly installed at the output end of the electric motor (109), and a reciprocating lead screw (112) is fixedly installed at the bottom end of the rotating rod (110). A limiting rod (111) is fixedly installed on the inner wall of the antenna cover (107). A circular brush (113) is movably sleeved on the outer surface of the limiting rod (111). The circular brush (113) is also movably sleeved on the outer surface of the reciprocating lead screw (112). A hollow mounting cylinder (103) is fixedly installed at the bottom of a signal transmission rod (131). The bottom of the signal transmission rod (131) is fixedly installed with a hollow mounting cylinder (103). A radar antenna (106) is fixedly installed at the bottom of the hollow mounting cylinder (103). A circular brush (113) is slidably connected to the outer surface of the radar antenna (106).

2. The radar level gauge according to claim 1, characterized in that: The top of the radome (107) is provided with a threaded groove (108). The radome (107) is movably embedded in the hollow mounting cylinder (103) through the threaded groove (108). The bottom end of the reciprocating screw (112) is movably fitted with belts (114) through two pulleys. One end of the two belts (114) is movably fitted with fans (115) through two pulleys.

3. A radar level gauge according to claim 2, characterized in that: The two fans (115) rotate inside the radome (107). The inner wall of the radome (107) is provided with multiple sliding grooves (119). Sliding rings (121) are slidably connected inside the multiple sliding grooves (119). A card hole (128) is fixedly installed on the top of the sliding ring (121). A fixing block (129) is fixedly installed on the top of each of the multiple card holes (128).

4. A radar level gauge according to claim 3, characterized in that: Multiple fixing blocks (129) are fixedly installed on the inner wall of the antenna cover (107). The inner wall of the sliding ring (121) is provided with a mounting groove (130). A dustproof net (122) is detachably connected inside the mounting groove (130). Multiple rectangular blocks (125) are fixedly installed at the bottom of the sliding ring (121). A rotating rod (126) is movably embedded inside the multiple rectangular blocks (125).

5. A radar level gauge according to claim 4, characterized in that: Each of the rotating rods (126) has a limiting strip (127) movably fitted on its outer surface. Each of the limiting strips (127) has a locking hole (128) at its top. Each of the dustproof nets (122) has a rectangular block (123) fixedly installed at its bottom. Each of the rectangular blocks (123) has a threaded rod (124) movably embedded inside its interior. Each of the threaded rods (124) is movably embedded inside the locking holes (128).

6. A radar level gauge according to claim 5, characterized in that: Multiple limiting strips (127) are located at the bottom of the dustproof net (122). A reciprocating screw two (116) is fixedly installed at the bottom of the reciprocating screw one (112). A sliding block (117) is movably sleeved on the outer surface of the reciprocating screw two (116). A contact block (118) is fixedly installed at the bottom of the sliding block (117).

7. A radar level gauge according to claim 6, characterized in that: The sliding block (117) is movably sleeved on the outer surface of the limiting rod (111).

8. A radar level gauge according to claim 7, characterized in that: The contact block (118) is in contact with the top of the dustproof net (122), and a heat sink (102) is fixedly installed on the top of the signal transmission rod (131).

9. A radar level gauge according to claim 8, characterized in that: A level gauge housing (101) is fixedly installed on the top of the heat sink (102). A display screen (104) is provided on one side of the level gauge housing (101), and multiple control buttons (105) are provided on one side of the level gauge housing (101).

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